subject:(Scattering)

1. Budarz, James Michael. Making a Molecular Movie: Imaging Ultrafast Reaction Dynamics with Gas-Phase X-Ray Scattering.

Degree: PhD, Chemistry, 2016, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:674235/

► Structural rearrangements within single molecules occur on ultrafast time scales. Many aspects of molecular dynamics, such as the energy flow through excited states, have been… (more)

Subjects/Keywords: scattering

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APA (6^th Edition):

Budarz, J. M. (2016). Making a Molecular Movie: Imaging Ultrafast Reaction Dynamics with Gas-Phase X-Ray Scattering. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:674235/

Chicago Manual of Style (16^th Edition):

Budarz, James Michael. “Making a Molecular Movie: Imaging Ultrafast Reaction Dynamics with Gas-Phase X-Ray Scattering.” 2016. Doctoral Dissertation, Brown University. Accessed February 25, 2020. https://repository.library.brown.edu/studio/item/bdr:674235/.

MLA Handbook (7^th Edition):

Budarz, James Michael. “Making a Molecular Movie: Imaging Ultrafast Reaction Dynamics with Gas-Phase X-Ray Scattering.” 2016. Web. 25 Feb 2020.

Vancouver:

Budarz JM. Making a Molecular Movie: Imaging Ultrafast Reaction Dynamics with Gas-Phase X-Ray Scattering. [Internet] [Doctoral dissertation]. Brown University; 2016. [cited 2020 Feb 25]. Available from: https://repository.library.brown.edu/studio/item/bdr:674235/.

Council of Science Editors:

Budarz JM. Making a Molecular Movie: Imaging Ultrafast Reaction Dynamics with Gas-Phase X-Ray Scattering. [Doctoral Dissertation]. Brown University; 2016. Available from: https://repository.library.brown.edu/studio/item/bdr:674235/

Oregon State University

2. Stenson, Jared R., 1977-. An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories.

Degree: PhD, Physics, 2010, Oregon State University

URL: http://hdl.handle.net/1957/15331

► Quantum mechanics provides a conventional theory of scattering that is limited in at least two ways: it focuses exclusively on the asymptotic regime and, in… (more)

Subjects/Keywords: scattering; Quantum scattering

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APA (6^th Edition):

Stenson, Jared R., 1. (2010). An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/15331

Chicago Manual of Style (16^th Edition):

Stenson, Jared R., 1977-. “An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories.” 2010. Doctoral Dissertation, Oregon State University. Accessed February 25, 2020. http://hdl.handle.net/1957/15331.

MLA Handbook (7^th Edition):

Stenson, Jared R., 1977-. “An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories.” 2010. Web. 25 Feb 2020.

Vancouver:

Stenson, Jared R. 1. An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories. [Internet] [Doctoral dissertation]. Oregon State University; 2010. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/1957/15331.

Council of Science Editors:

Stenson, Jared R. 1. An extension of the quantum theory of scattering to the non-asymptotic regime using Bohmian trajectories. [Doctoral Dissertation]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/15331

3. Zheng, Weixiong. Physics-based Uncertainty Quantification for ZrHx Thermal Scattering Law.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66838

► The thermal neutron scattering cross sections of ZrHx are heavily affected by the solid frequency distributions, also called ???phonon spectra???, of Zr and H in… (more)

▼ The thermal neutron scattering cross sections of ZrHx are heavily affected by the solid frequency distributions, also called ???phonon spectra???, of Zr and H in ZrHx. The phonon spectra are different for ZrHx with different x. While current reference data files, e.g. ENDF, are based on the spectra of ZrH_(2). This may induce unnegligible errors in the simulations for TRIGA reactor. We, therefore, proposed parameterized phonon spectra that can explore the effects of changing the spectra by varying the parameters. For example, we can shift the phonon positions in the spectra. The ul- timate goal of this type of work is to calibrate appropriate parameter sets to improve the simulation accuracy via comparing the simulation results and experimental data. In this thesis, a code has been developed to process the thermal scattering data for transport codes to use. Inputs of the code are basically the proposed parameters. The accuracy of the code processing Legendre moments of scatteirng was demonstrated. NJOY and MCNP were used to carry out the data processing and neutronic simulations, respectively. The phonon spectra were generated with the parameters produced in Latin Hypercube sampling designs. Quantities, like reactivity (??), fission rate density (FRD), neutron mean generation time (??), fuel temperature feedback coefficient (??Fuel), effective delayed neutron fraction (??eff ) and ex-core detector material absorption rate (Rabs), were analyzed. Analyses indicate that ??, ?? and ??Fuel are sensitive to the variations of parameters. Explicit relationships were established for those quantities and the parameters. However, FRD and Rabs is insensitive to any parameters. ??eff are sensitive to the parameterized models, however, no explicit relationship could be built due to the unrecognized nonlinearities. Ongoing work will perform these analyses for the state near critical. Furthermore, time-dependent behavior could be investigated and when combined with experimental data the reasonably accurate phonon spectrum models and therefore S (??, ??) tables for the TRIGA reactor at Texas A&M University would be produced. Advisors/Committee Members: McClarren, Ryan G (advisor).

Subjects/Keywords: Thermal scattering

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APA (6^th Edition):

Zheng, W. (2013). Physics-based Uncertainty Quantification for ZrHx Thermal Scattering Law. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66838

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zheng, Weixiong. “Physics-based Uncertainty Quantification for ZrHx Thermal Scattering Law.” 2013. Thesis, Texas Digital Library. Accessed February 25, 2020. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66838.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zheng, Weixiong. “Physics-based Uncertainty Quantification for ZrHx Thermal Scattering Law.” 2013. Web. 25 Feb 2020.

Vancouver:

Zheng W. Physics-based Uncertainty Quantification for ZrHx Thermal Scattering Law. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66838.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zheng W. Physics-based Uncertainty Quantification for ZrHx Thermal Scattering Law. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66838

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

4. Zlotnikov, Michael. Scattering Equations, Soft Theorems, and Amplitudes on the Celestial Sphere.

Degree: Department of Physics, 2018, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:792710/

► This thesis is concerned with computation of tree-level scattering amplitudes through scattering equations and derivation of soft theorems from them. Additionally, mapping of scattering amplitudes… (more)

▼ This thesis is concerned with computation of tree-level scattering amplitudes through scattering equations and derivation of soft theorems from them. Additionally, mapping of scattering amplitudes to conformal correlators on the celestial sphere is considered. We use the Cachazo-He-Yuan (CHY) scattering equations based formula which describes an n-point tree level scattering amplitude for gravitons in arbitrary dimension to prove the recently proposed sub-sub-leading soft-graviton theorem. Furthermore, we investigate the tree-level S-matrix in gauge theories and open superstring theory with several soft particles. We show that scattering amplitudes with two or three soft gluons of non-identical helicities behave universally in the limit, with non-trivial multi-soft factors. We also find new soft theorems for double soft limits of scalars and fermions in Super-Yang-Mills and double-soft-scalar limits in open superstring theory. Subsequently, we derive a CHY type formula for the leading gluon, bi-adjoint scalar, Yang-Mills-scalar and non-linear sigma model m-soft factors S_m in arbitrary dimension. The general formula is used to evaluate explicit examples for up to three soft legs analytically and up to four soft legs numerically via comparison with amplitude ratios under soft kinematics. A structural pattern for gluon m-soft factor is inferred and a simpler formula for its calculation is conjectured. We develop a polynomial reduction procedure that transforms any gauge fixed scattering equations based amplitude integrand for n scattering particles into a multivariate polynomial of what we call the standard form, which has finite size at any n. Subsequently, at tree and one-loop level, we employ the global residue theorem to derive a prescription that evaluates any scattering equations based amplitude by means of collecting simple residues at infinity only. The prescription is then applied explicitly to some tree and one-loop amplitude examples. Pasterski, Shao and Strominger have recently proposed that massless scattering amplitudes can be mapped to correlators on the celestial sphere at infinity via a Mellin transform. We apply this prescription to some n-point tree-level gluon amplitudes. The Mellin transforms of MHV amplitudes are given by generalized hypergeometric functions on the Grassmannian Gr(4,n), while generic non-MHV amplitudes are given by more complicated Gelfand A-hypergeometric functions. Advisors/Committee Members: Volovich, Anastasia (Advisor), Jevicki, Antal (Reader), Fan, JiJi (Reader).

Subjects/Keywords: scattering amplitudes

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APA (6^th Edition):

Zlotnikov, M. (2018). Scattering Equations, Soft Theorems, and Amplitudes on the Celestial Sphere. (Thesis). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:792710/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zlotnikov, Michael. “Scattering Equations, Soft Theorems, and Amplitudes on the Celestial Sphere.” 2018. Thesis, Brown University. Accessed February 25, 2020. https://repository.library.brown.edu/studio/item/bdr:792710/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zlotnikov, Michael. “Scattering Equations, Soft Theorems, and Amplitudes on the Celestial Sphere.” 2018. Web. 25 Feb 2020.

Vancouver:

Zlotnikov M. Scattering Equations, Soft Theorems, and Amplitudes on the Celestial Sphere. [Internet] [Thesis]. Brown University; 2018. [cited 2020 Feb 25]. Available from: https://repository.library.brown.edu/studio/item/bdr:792710/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zlotnikov M. Scattering Equations, Soft Theorems, and Amplitudes on the Celestial Sphere. [Thesis]. Brown University; 2018. Available from: https://repository.library.brown.edu/studio/item/bdr:792710/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

5. Golden, John Kimbell. Cluster Polylogarithms and Scattering Amplitudes.

Degree: PhD, Physics, 2015, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:419486/

► Scattering amplitudes have undergone considerable study in the last few years. Much of the progress has come from abandoning Feynman diagram techniques and instead exploring… (more)

▼ Scattering amplitudes have undergone considerable study in the last few years. Much of the progress has come from abandoning Feynman diagram techniques and instead exploring and exploiting the physical constraints and mathematical structures underlying amplitudes. In this dissertation we present a new, unexpected structure underlying certain amplitudes: cluster algebras. Harnessing the power of cluster algebras allows us to calculate previously unknown amplitudes and points the way towards a deeper mathematical understanding of quantum field theory. We begin by introducing motivic amplitudes, which contain all of the essential mathematical content of scattering amplitudes in planar N=4 supersymmetric Yang-Mills theory. We then establish, through explicit calculations of the two-loop, seven-particle motivic amplitude as well as the n-particle two-loop differential, that the amplitude only depends on on certain preferred coordinates known in the mathematics literature as cluster X-coordinates on Conf_n(P³). The connection between scattering amplitudes and cluster algebras prompts us to define cluster polylogarithm functions, objects which elegantly (and uniquely) contain beautiful motivic and cluster algebraic structure. In particular, cluster polylogarithms allow us to associate specific polylogarithm functions to faces of generalized associahedrons, to which cluster algebras have a natural combinatoric connection. These functions form a sufficient basis to express two-loop amplitudes, and we present an analytic formula for the two-loop seven-particle amplitude as an example. Furthermore, we find intriguing connections between motivic amplitudes and the geometry of associahedrons. For example, we show that the obstruction to the two-loop motivic amplitude being expressible in terms of classical polylogarithms is most naturally represented by certain quadrilateral faces of the appropriate associahedron. Advisors/Committee Members: Spradlin, Marcus (Director), Jevicki, Antal (Reader), Tan, Chung-I (Reader).

Subjects/Keywords: scattering amplitudes

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APA (6^th Edition):

Golden, J. K. (2015). Cluster Polylogarithms and Scattering Amplitudes. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:419486/

Chicago Manual of Style (16^th Edition):

Golden, John Kimbell. “Cluster Polylogarithms and Scattering Amplitudes.” 2015. Doctoral Dissertation, Brown University. Accessed February 25, 2020. https://repository.library.brown.edu/studio/item/bdr:419486/.

MLA Handbook (7^th Edition):

Golden, John Kimbell. “Cluster Polylogarithms and Scattering Amplitudes.” 2015. Web. 25 Feb 2020.

Vancouver:

Golden JK. Cluster Polylogarithms and Scattering Amplitudes. [Internet] [Doctoral dissertation]. Brown University; 2015. [cited 2020 Feb 25]. Available from: https://repository.library.brown.edu/studio/item/bdr:419486/.

Council of Science Editors:

Golden JK. Cluster Polylogarithms and Scattering Amplitudes. [Doctoral Dissertation]. Brown University; 2015. Available from: https://repository.library.brown.edu/studio/item/bdr:419486/

6. Harrington, Thomas M. Cluster Bootstrap in N=4 Super-Yang-Mills Scattering Amplitudes.

Degree: Department of Physics, 2017, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:733355/

► Amplitudeologists are interested in the general mathematical properties exhibited by amplitudes, asking questions like; which variables do planar N = 4 Super-Yang-Mills (SYM) amplitudes depend… (more)

▼ Amplitudeologists are interested in the general mathematical properties exhibited by amplitudes, asking questions like; which variables do planar N = 4 Super-Yang-Mills (SYM) amplitudes depend on? and what properties are common to all multi-loop and non-maximally helicity violating (MHV) amplitudes? Currently, we look at the analytic results of amplitudes calculated by alternative techniques and use newly developed mathematical tools to learn more about the properties hidden in the current formulation. Just like a change of variables can make certain symmetries more obvious, expressing the currently known amplitudes in alternative mathematical languages may uncover unknown symmetries that play an essential role. By exploiting the mathematical structure and developing tools which make amplitude properties manifest, we may be able to write down analytic functions for processes too complex to be calculated with modern techniques. Scattering amplitudes in planar super-Yang-Mills theory satisfy several basic physical and mathematical constraints, including physical constraints on their branch cut structure and various empirically discovered connections to the mathematics of cluster algebras. The power of the bootstrap program for amplitudes is inversely proportional to the size of the intersection between these physical and mathematical constraints: ideally we would like a list of constraints which determine scattering amplitudes uniquely. We explore this intersection quantitatively for two-loop six- and seven-point amplitudes. We reformulate the heptagon cluster bootstrap to take advantage of the Steinmann relations, which require certain double discontinuities of any amplitude to vanish. These constraints vastly reduce the number of functions needed to bootstrap seven-point amplitudes in planar N = 4 SYM theory, making higher-loop contributions to these amplitudes more computationally accessible. In particular, dual superconformal symmetry and well-defined collinear limits suffice to determine uniquely the symbols of the three-loop next-to-maximally helicity violating (NMHV) and four-loop MHV seven-point amplitudes. We also show that at three loops, relaxing the dual superconformal (Qbar) relations and imposing dihedral symmetry (and for NMHV the absence of spurious poles) leaves only a single ambiguity in the heptagon amplitudes. Advisors/Committee Members: Spradlin, Marcus (Advisor), Fan, Jiji (Reader), Alexander, Stephon (Reader).

Subjects/Keywords: scattering amplitudes

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APA (6^th Edition):

Harrington, T. M. (2017). Cluster Bootstrap in N=4 Super-Yang-Mills Scattering Amplitudes. (Thesis). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:733355/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Harrington, Thomas M. “Cluster Bootstrap in N=4 Super-Yang-Mills Scattering Amplitudes.” 2017. Thesis, Brown University. Accessed February 25, 2020. https://repository.library.brown.edu/studio/item/bdr:733355/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Harrington, Thomas M. “Cluster Bootstrap in N=4 Super-Yang-Mills Scattering Amplitudes.” 2017. Web. 25 Feb 2020.

Vancouver:

Harrington TM. Cluster Bootstrap in N=4 Super-Yang-Mills Scattering Amplitudes. [Internet] [Thesis]. Brown University; 2017. [cited 2020 Feb 25]. Available from: https://repository.library.brown.edu/studio/item/bdr:733355/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Harrington TM. Cluster Bootstrap in N=4 Super-Yang-Mills Scattering Amplitudes. [Thesis]. Brown University; 2017. Available from: https://repository.library.brown.edu/studio/item/bdr:733355/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Nandan, Dhritiman. Techniques for computing scattering amplitudes: Mellin space, Inverse Soft Limit, Bonus Relations.

Degree: PhD, Physics, 2013, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:320546/

► Scattering Amplitudes in maximally supersymmetric gauge and gravity theories are remarkable objects which hold the key to understanding many interesting mathe- matical structures in these… (more)

▼ Scattering Amplitudes in maximally supersymmetric gauge and gravity theories are remarkable objects which hold the key to understanding many interesting mathe- matical structures in these theories. In this dissertation we study various techniques for computing scattering amplitudes. In the AdS/CFT duality paradigm, the computation of CFT correlation functions via Witten diagrams in AdS space can be simplified via the Mellin transform. Recently a set of Feynman rules for tree-level Mellin space amplitudes has been proposed for scalar theories. In this thesis we derive these rules for the scalar φ^n theory and check their behavior under the flat space limit. Next, we explore single and multi-loop conformal integrals, such as the ones appearing in perturbative dual conformal theories in flat space. Using Mellin amplitudes in this context, a large class of higher loop integrals can be written as simple integro- differential operators on star integrals: one-loop n-gon integrals in n dimensions. We explore the geometric origin of such integrals and study specific non-trivial examples including their relation to higher loop integrals. We study N = 4 Super Yang-Mills(SYM) tree level scattering amplitudes and explore inverse soft limit idea of “adding a particle to lower point amplitudes". Using it we generate full tree-level superamplitudes of N = 4 SYM theory, by adding “soft" particles in a certain way. With the help from Britto-Cachazo-Feng-Witten recursion relations, a systematic and concrete way of adding particles is determined recursively. The method of generating amplitudes by Inverse Soft Limit can also be generalized for constructing form factors. We also study the application of non-trivial relations between gravity tree amplitudes, the bonus relations, to all tree-level amplitudes in N = 8 supergravity. We show that the relations can be used to simplify explicit formulae of supergravity tree amplitudes, by reducing the known form as a sum of (n − 2)! permutations to a new form as a (n − 3)!-permutation sum. We demonstrate some specific examples and then provide a general pattern of bonus coefficients for all tree-level amplitudes. Advisors/Committee Members: Volovich, Anastasia (Director), Jevicki, Antal (Reader), Tan, Chung-I (Reader).

Subjects/Keywords: Scattering Amplitudes

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APA (6^th Edition):

Nandan, D. (2013). Techniques for computing scattering amplitudes: Mellin space, Inverse Soft Limit, Bonus Relations. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:320546/

Chicago Manual of Style (16^th Edition):

Nandan, Dhritiman. “Techniques for computing scattering amplitudes: Mellin space, Inverse Soft Limit, Bonus Relations.” 2013. Doctoral Dissertation, Brown University. Accessed February 25, 2020. https://repository.library.brown.edu/studio/item/bdr:320546/.

MLA Handbook (7^th Edition):

Nandan, Dhritiman. “Techniques for computing scattering amplitudes: Mellin space, Inverse Soft Limit, Bonus Relations.” 2013. Web. 25 Feb 2020.

Vancouver:

Nandan D. Techniques for computing scattering amplitudes: Mellin space, Inverse Soft Limit, Bonus Relations. [Internet] [Doctoral dissertation]. Brown University; 2013. [cited 2020 Feb 25]. Available from: https://repository.library.brown.edu/studio/item/bdr:320546/.

Council of Science Editors:

Nandan D. Techniques for computing scattering amplitudes: Mellin space, Inverse Soft Limit, Bonus Relations. [Doctoral Dissertation]. Brown University; 2013. Available from: https://repository.library.brown.edu/studio/item/bdr:320546/

8. Minetomo, Yuki. Acquiring Scattering Properties from a Single Image : 単一画像からの散乱特性の取得; タンイツガゾウカラノサンラントクセイノシュトク.

Degree: Nara Institute of Science and Technology / 奈良先端科学技術大学院大学

URL: http://hdl.handle.net/10061/12454

Subjects/Keywords: scattering

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APA (6^th Edition):

Minetomo, Y. (n.d.). Acquiring Scattering Properties from a Single Image : 単一画像からの散乱特性の取得; タンイツガゾウカラノサンラントクセイノシュトク. (Thesis). Nara Institute of Science and Technology / 奈良先端科学技術大学院大学. Retrieved from http://hdl.handle.net/10061/12454

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Minetomo, Yuki. “Acquiring Scattering Properties from a Single Image : 単一画像からの散乱特性の取得; タンイツガゾウカラノサンラントクセイノシュトク.” Thesis, Nara Institute of Science and Technology / 奈良先端科学技術大学院大学. Accessed February 25, 2020. http://hdl.handle.net/10061/12454.

Note: this citation may be lacking information needed for this citation format:
No year of publication.
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Minetomo, Yuki. “Acquiring Scattering Properties from a Single Image : 単一画像からの散乱特性の取得; タンイツガゾウカラノサンラントクセイノシュトク.” Web. 25 Feb 2020.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Minetomo Y. Acquiring Scattering Properties from a Single Image : 単一画像からの散乱特性の取得; タンイツガゾウカラノサンラントクセイノシュトク. [Internet] [Thesis]. Nara Institute of Science and Technology / 奈良先端科学技術大学院大学; [cited 2020 Feb 25]. Available from: http://hdl.handle.net/10061/12454.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Council of Science Editors:

Minetomo Y. Acquiring Scattering Properties from a Single Image : 単一画像からの散乱特性の取得; タンイツガゾウカラノサンラントクセイノシュトク. [Thesis]. Nara Institute of Science and Technology / 奈良先端科学技術大学院大学; Available from: http://hdl.handle.net/10061/12454

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
No year of publication.

Mississippi State University

9. Seran, Santosh. EFFICIENT TECHNIQUES FOR SCATTERING FROM PLANAR AND CYLINDRICAL STRUCTURES WITH EDGES.

Degree: PhD, Electrical and Computer Engineering, 2010, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04212010-164829/ ;

► In this work, we present rigorous and efficient methods for analyzing scattering from the following structures Tandem Slit loaded with homogeneous material Eccentrically loaded cylinder… (more)

▼ In this work, we present rigorous and efficient methods for analyzing scattering from the following structures Tandem Slit loaded with homogeneous material Eccentrically loaded cylinder with multiple slits Semicircular cylinder and slit Dielectric loaded Wedge shaped cylinder Circular cylinder with resonant cavities and resonant cavities on circular arc. For analyzing the material loaded tandem slit configuration, the boundary value problem is formulated into a pair of simultaneous Wiener-Hopf equations via Fourier transformation. After decoupling these equations by elementary transformation, each modified Wiener-Hopf equation is reduced to a Fredholm integral equation of the second kind. The integral equations are then solved approximately to yield the Fourier transform of the diffracted fields. The inverse transform is evaluated asymptotically to obtain the far field expressions. Measurements and numerical simulations are also performed for several different geometric and material configurations. The analytic solutions compare well with measured and simulated results. The possibility of reducing beamwidth and increasing power coupled through the loaded tandem slit is explored. The analysis of the eccentrically loaded cylindrical cavity with multiple slits under plane wave illumination is formulated using two distinct approaches: (1) an integral equation/combined boundary condition (IE/CBC) formulation and (2) an integral equation/Neumann series expansion (IE/NS) formulation. The IE/NS formulation is shown to converge faster than the IE/CBC formulation based on the proper edge behavior exhibited by the Neumann series current expansion functions. Results for the backscattered radar cross section (RCS) of several geometries are presented, and the relationships between the RCS and the scatterer characteristics are explored. The applicability of the Neumann series method to find a fast method for evaluating scattering from a metallic strip and semicircular cylinder is presented. The Neumann series of different periodicity is used for studying scattering from wedge shaped cylinder. The Neumann series is also applied to study scattering from a circular cylinder with resonant cavities and resonant cavities on a circular arc. These resonant cavities on a circular arc have superdirective properties, which are useful for high gain antenna design. Advisors/Committee Members: Dr. J Patrick Donohoe (chair), Dr. Erdem Topsakal (chair), Dr. Nicolas Younan (committee member), Dr. Robert Smith (committee member).

Subjects/Keywords: Electromagnetic Scattering

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APA (6^th Edition):

Seran, S. (2010). EFFICIENT TECHNIQUES FOR SCATTERING FROM PLANAR AND CYLINDRICAL STRUCTURES WITH EDGES. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-04212010-164829/ ;

Chicago Manual of Style (16^th Edition):

Seran, Santosh. “EFFICIENT TECHNIQUES FOR SCATTERING FROM PLANAR AND CYLINDRICAL STRUCTURES WITH EDGES.” 2010. Doctoral Dissertation, Mississippi State University. Accessed February 25, 2020. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04212010-164829/ ;.

MLA Handbook (7^th Edition):

Seran, Santosh. “EFFICIENT TECHNIQUES FOR SCATTERING FROM PLANAR AND CYLINDRICAL STRUCTURES WITH EDGES.” 2010. Web. 25 Feb 2020.

Vancouver:

Seran S. EFFICIENT TECHNIQUES FOR SCATTERING FROM PLANAR AND CYLINDRICAL STRUCTURES WITH EDGES. [Internet] [Doctoral dissertation]. Mississippi State University; 2010. [cited 2020 Feb 25]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04212010-164829/ ;.

Council of Science Editors:

Seran S. EFFICIENT TECHNIQUES FOR SCATTERING FROM PLANAR AND CYLINDRICAL STRUCTURES WITH EDGES. [Doctoral Dissertation]. Mississippi State University; 2010. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-04212010-164829/ ;

10. Gurley, John V. Experimental investigation of scattering from randomly rough elastic cylinders.

Degree: 1992, MIT and Woods Hole Oceanographic Institution

URL: http://hdl.handle.net/1912/5498

► Acoustical backscattering from randomly rough infinitely long elastic cylinders surrounded by a fluid medium is examined. The cylinder radius is allowed to vary along its… (more)

Subjects/Keywords: Scattering

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APA (6^th Edition):

Gurley, J. V. (1992). Experimental investigation of scattering from randomly rough elastic cylinders. (Thesis). MIT and Woods Hole Oceanographic Institution. Retrieved from http://hdl.handle.net/1912/5498

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gurley, John V. “Experimental investigation of scattering from randomly rough elastic cylinders.” 1992. Thesis, MIT and Woods Hole Oceanographic Institution. Accessed February 25, 2020. http://hdl.handle.net/1912/5498.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gurley, John V. “Experimental investigation of scattering from randomly rough elastic cylinders.” 1992. Web. 25 Feb 2020.

Vancouver:

Gurley JV. Experimental investigation of scattering from randomly rough elastic cylinders. [Internet] [Thesis]. MIT and Woods Hole Oceanographic Institution; 1992. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/1912/5498.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gurley JV. Experimental investigation of scattering from randomly rough elastic cylinders. [Thesis]. MIT and Woods Hole Oceanographic Institution; 1992. Available from: http://hdl.handle.net/1912/5498

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Rutgers University

11. Cline, Ethan, 1992-. Understanding the Paul Scherrer Institute's PiM1 beamline for MUSE.

Degree: PhD, Physics and Astronomy, 2019, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/62214/

►

In this thesis the proton radius puzzle will be described and used to motivated the MUSE experiment. An overview of the requirements for the systematic… (more)

Subjects/Keywords: Protons – Scattering

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APA (6^th Edition):

Cline, Ethan, 1. (2019). Understanding the Paul Scherrer Institute's PiM1 beamline for MUSE. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/62214/

Chicago Manual of Style (16^th Edition):

Cline, Ethan, 1992-. “Understanding the Paul Scherrer Institute's PiM1 beamline for MUSE.” 2019. Doctoral Dissertation, Rutgers University. Accessed February 25, 2020. https://rucore.libraries.rutgers.edu/rutgers-lib/62214/.

MLA Handbook (7^th Edition):

Cline, Ethan, 1992-. “Understanding the Paul Scherrer Institute's PiM1 beamline for MUSE.” 2019. Web. 25 Feb 2020.

Vancouver:

Cline, Ethan 1. Understanding the Paul Scherrer Institute's PiM1 beamline for MUSE. [Internet] [Doctoral dissertation]. Rutgers University; 2019. [cited 2020 Feb 25]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/62214/.

Council of Science Editors:

Cline, Ethan 1. Understanding the Paul Scherrer Institute's PiM1 beamline for MUSE. [Doctoral Dissertation]. Rutgers University; 2019. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/62214/

Universidad de Cantabria

12. Sanz Casado, Juan Marcos. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.

Degree: 2011, Universidad de Cantabria

URL: http://hdl.handle.net/10902/1565

► RESUMEN: Definir los parámetros de polarización de la luz procedente de una muestra aporta una mayor información sobre las propiedades de ésta que la simple… (more)

▼ RESUMEN: Definir los parámetros de polarización de la luz procedente de una muestra aporta una mayor información sobre las propiedades de ésta que la simple medida de la intensidad luminosa difundida. Cuando un haz luminoso sufre una perturbación debida a cualquier interacción con un medio, los campos electromagnéticos del haz incidente y el del haz emergente, expresados en términos de los parámetros de Stokes, pueden ser relacionados mediante la denominada matriz de Mueller. En este aspecto, el conocer la evolución de los parámetros de dicha matriz del sistema, nos permitiría definir cómo se comporta éste frente a la luz incidente. Para tal objetivo, se ha puesto a punto un polarímetro dinámico basado en técnicas de Transformada de Fourier, que permite determinar con una sola medida los 16 elementos de la matriz de Mueller. Ésta nos mostrará los cambios sufridos por la polarización del haz incidente debido a su interacción con una muestra problema. Aplicando el método de Descomposición Polar, se puede ver que cualquier sistema puro, con matriz de Mueller M, responde a la siguiente relación: M=R*D, donde R y D simbolizan las matrices de Mueller de un medio Retardador ideal y de un medio Diatenuador ideal, respectivamente. En una versión extendida de éste teorema, teniendo en cuenta que no todos los medios son ideales, sino que hay medios en los que aparecen efectos de despolarización, la descomposición de la matriz de Mueller daría lugar a: M=Z*R*D, tomando Z como la matriz de Mueller de un sistema despolarizante. De esta forma, utilizando algebra matricial, podemos descomponer la matriz de un sistema problema, en matrices de menor complejidad, con un estricto sentido físico. Partiendo de éstos resultados teóricos, y por medio del uso del polarímetro dinámico para la caracterización polarimétrica de los sistemas, se han analizado muestras de diversos tipos: superficies planas microestructuradas, para evaluar el efecto de la composición, tamaño e interacción; suspensiones de micropartículas y nanopartículas en coloide, para caracterizar su tamaño y composición; y sustancias quirales en medios turbios (en éste aspecto, recientemente ha sido demostrada la validez de éste método para el análisis in situ de tejidos biológicos). Asimismo, se han caracterizado componentes ópticos y polarimétricos por transmisión y reflexión, demostrando la validez del método. Finalmente se han llevado a cabo simulaciones computacionales a fin de estudiar patrones de comportamiento en sistemas complejos por medio del método de Descomposición Polar. Advisors/Committee Members: Saiz Vega, José María (advisor), Universidad de Cantabria (other).

Subjects/Keywords: Light scattering

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APA (6^th Edition):

Sanz Casado, J. M. (2011). Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. (Doctoral Dissertation). Universidad de Cantabria. Retrieved from http://hdl.handle.net/10902/1565

Chicago Manual of Style (16^th Edition):

Sanz Casado, Juan Marcos. “Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.” 2011. Doctoral Dissertation, Universidad de Cantabria. Accessed February 25, 2020. http://hdl.handle.net/10902/1565.

MLA Handbook (7^th Edition):

Sanz Casado, Juan Marcos. “Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.” 2011. Web. 25 Feb 2020.

Vancouver:

Sanz Casado JM. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. [Internet] [Doctoral dissertation]. Universidad de Cantabria; 2011. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/10902/1565.

Council of Science Editors:

Sanz Casado JM. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. [Doctoral Dissertation]. Universidad de Cantabria; 2011. Available from: http://hdl.handle.net/10902/1565

University of Rochester

13. Smith, Zachary T. (1979 - ). Integrated Raman and angular scattering of single biological cells.

Degree: PhD, 2011, University of Rochester

URL: http://hdl.handle.net/1802/14424

► Raman, or inelastic, scattering and angle-resolved elastic scattering are two optical processes that have found wide use in the study of biological systems. Raman scattering… (more)

▼ Raman, or inelastic, scattering and angle-resolved elastic scattering are two optical processes that have found wide use in the study of biological systems. Raman scattering quantitatively reports on the chemical composition of a sample by probing molecular vibrations, while elastic scattering reports on the morphology of a sample by detecting structure-induced coherent interference between incident and scattered light. We present the construction of a multimodal microscope platform capable of gathering both elastically and inelastically scattered light from a 38 μm2 region in both epi- and trans-illumination geometries. Simultaneous monitoring of elastic and inelastic scattering from a microscopic region allows noninvasive characterization of a living sample without the need for exogenous dyes or labels. A sample is illuminated either from above or below with a focused 785 nm TEM00 mode laser beam, with elastic and inelastic scattering collected by two separate measurement arms. The measurements may be made either simultaneously, if identical illumination geometries are used, or sequentially, if the two modalities utilize opposing illumination paths. In the inelastic arm, Stokes-shifted light is dispersed by a spectrograph onto a CCD array. In the elastic scattering collection arm, a relay system images the microscope’s back aperture onto a CCD detector array to yield an angle-resolved elastic scattering pattern. Post-processing of the inelastic scattering to remove fluorescence signals yields high quality Raman spectra that report on the sample’s chemical makeup. Comparison of the elastically scattered pupil images to generalized Lorenz-Mie theory yields estimated size distributions of scatterers within the sample. In this thesis we will present validations of the IRAM instrument through measurements performed on single beads of a few microns in size, as well as on ensembles of sub-micron particles of known size distributions. The benefits and drawbacks of the epi- and trans-illumination modalities are also discussed. In addition, transilluminated Raman and elastic-scattering spectra were obtained from several biological test-cases, including Streptococcus pneumoniae, baker’s yeast, and single human immune cells. Both the Raman and elastic-scattering channels extract information from these samples that are well in line with their known characteristics from the literature. Finally, we report on an experiment in which CD8+ T lymphocytes were stimulated by exposure to the antigens staphylococcal enterotoxin B and phorbol myristate acetate. Clear chemical and morphological differences were observed between the activated and unactivated cells, with the results correlating well to analysis performed on parallel samples using fluorescent stains and a flow cytometer.

Subjects/Keywords: Raman scattering; Elastic scattering; Biomedical optics

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APA (6^th Edition):

Smith, Z. T. (. -. ). (2011). Integrated Raman and angular scattering of single biological cells. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/14424

Chicago Manual of Style (16^th Edition):

Smith, Zachary T (1979 - ). “Integrated Raman and angular scattering of single biological cells.” 2011. Doctoral Dissertation, University of Rochester. Accessed February 25, 2020. http://hdl.handle.net/1802/14424.

MLA Handbook (7^th Edition):

Smith, Zachary T (1979 - ). “Integrated Raman and angular scattering of single biological cells.” 2011. Web. 25 Feb 2020.

Vancouver:

Smith ZT(-). Integrated Raman and angular scattering of single biological cells. [Internet] [Doctoral dissertation]. University of Rochester; 2011. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/1802/14424.

Council of Science Editors:

Smith ZT(-). Integrated Raman and angular scattering of single biological cells. [Doctoral Dissertation]. University of Rochester; 2011. Available from: http://hdl.handle.net/1802/14424

Penn State University

14. Garner, Timothy. Time-Domain Electromagnetic Scattering by Objects Moving Uniformly at Relativistic Speeds.

Degree: 2018, Penn State University

URL: https://etda.libraries.psu.edu/catalog/14984tjg236

► The scattering of electromagnetic signals by an object in uniform translationalmotion may be computed with the frame-hopping method. Frame hopping usesresults from the special theory… (more)

▼ The scattering of electromagnetic signals by an object in uniform translationalmotion may be computed with the frame-hopping method. Frame hopping usesresults from the special theory of relativity and has four steps: (i) define the electricand magnetic fields of the incident signal in the laboratory reference frame K',(ii) express the electric and magnetic fields of the incident signal in the objectsco-moving reference frame K using a Lorentz transformation, (iii) compute theelectric and magnetic fields of the scattered signals in K, and (iv) express the fieldsof the scattered signals in K' using another Lorentz transformation. Relativisticeffects must be considered when the object moves at an appreciable fraction of thespeed of light in free space c.Because the fields of the scattered signals are computed in the objects rest framein Step (iii), any analytical or numerical method for computing signals scattered bystationary objects may be used. The rest values of the objects relative permittivityand permeability must be used in Step (iii). Signals scattered by homogeneousand concentrically layered spheres may be computed using the LorenzMie seriessolution. For objects which do not have analytical solutionssuch as disks, rods, andmore complex objects like spacecraftnumerical techniques must be used. The finite-differencetime-domain (FDTD) method is particularly suitable for computationof time-domain scattered signals. FDTD requires only one simulation to computethe scattered signals, unlike frequency-domain methods which require a separatecomputation for each frequency component of the incident signal.In contrast to time-harmonic plane waves, which have infinite duration, pulsedplane waves have limited duration and finite energy density. Thus, total energyscattering, energy absorption, and energy extinction cross sections with units ofarea may be defined as the ratio of the total energy scattered, absorbed, andremoved from the incident signal by a scattering object to the energy density ofthe incident signal. The energy extinction and energy absorption cross sectionsare Lorentz invariant, but the total energy scattering cross section is not. Theforward-scattering theorem therefore applies only to objects at rest.Electromagnetic signals scattered by a uniformly translating object at relativisticspeeds depend in general on the objects size, shape, orientation, composition, andvelocity, as well as on the incident signal. The duration of scattered signals may bemuch longer than the duration of the incident signal. The incident signal impartsenergy to the object, which the object may then slowly radiate over a period oftime. The energy extinction cross section of an object may be greatly increased(decreased) if the Doppler effect moves the spectrum of the incident signal toward(away from) localized surface plasmon or localized surface phonons in K. In general,the total energy scattering, energy absorption, and energy extinction cross sectionsin K' go to zero when the object recedes directly from the source of the… Advisors/Committee Members: James K. Breakall, Dissertation Advisor.

Subjects/Keywords: scattering; relativity; forward-scattering theorem; electromagnetics

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APA (6^th Edition):

Garner, T. (2018). Time-Domain Electromagnetic Scattering by Objects Moving Uniformly at Relativistic Speeds. (Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/14984tjg236

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Garner, Timothy. “Time-Domain Electromagnetic Scattering by Objects Moving Uniformly at Relativistic Speeds.” 2018. Thesis, Penn State University. Accessed February 25, 2020. https://etda.libraries.psu.edu/catalog/14984tjg236.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Garner, Timothy. “Time-Domain Electromagnetic Scattering by Objects Moving Uniformly at Relativistic Speeds.” 2018. Web. 25 Feb 2020.

Vancouver:

Garner T. Time-Domain Electromagnetic Scattering by Objects Moving Uniformly at Relativistic Speeds. [Internet] [Thesis]. Penn State University; 2018. [cited 2020 Feb 25]. Available from: https://etda.libraries.psu.edu/catalog/14984tjg236.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Garner T. Time-Domain Electromagnetic Scattering by Objects Moving Uniformly at Relativistic Speeds. [Thesis]. Penn State University; 2018. Available from: https://etda.libraries.psu.edu/catalog/14984tjg236

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

15. Olson, Derek Raymond. High-frequency Acoustic Scattering from Rough Elastic Surfaces.

Degree: PhD, Acoustics, 2014, Penn State University

URL: https://etda.libraries.psu.edu/catalog/23001

► This research is concerned with acoustic scattering from rough, elastic interfaces. The primary results of this dissertation consist of acoustic scattering measurements coupled with environmental… (more)

Subjects/Keywords: Acoustic Scattering; Rough interface scattering; Underwater Acoustics

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APA (6^th Edition):

Olson, D. R. (2014). High-frequency Acoustic Scattering from Rough Elastic Surfaces. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/23001

Chicago Manual of Style (16^th Edition):

Olson, Derek Raymond. “High-frequency Acoustic Scattering from Rough Elastic Surfaces.” 2014. Doctoral Dissertation, Penn State University. Accessed February 25, 2020. https://etda.libraries.psu.edu/catalog/23001.

MLA Handbook (7^th Edition):

Olson, Derek Raymond. “High-frequency Acoustic Scattering from Rough Elastic Surfaces.” 2014. Web. 25 Feb 2020.

Vancouver:

Olson DR. High-frequency Acoustic Scattering from Rough Elastic Surfaces. [Internet] [Doctoral dissertation]. Penn State University; 2014. [cited 2020 Feb 25]. Available from: https://etda.libraries.psu.edu/catalog/23001.

Council of Science Editors:

Olson DR. High-frequency Acoustic Scattering from Rough Elastic Surfaces. [Doctoral Dissertation]. Penn State University; 2014. Available from: https://etda.libraries.psu.edu/catalog/23001

University of Gothenburg / Göteborgs Universitet

16. Harimoorthy, Rajiv. Effect of Microwaves on Microtubule Structure and Function probed by Light and X-ray Scattering.

Degree: 2018, University of Gothenburg / Göteborgs Universitet

URL: http://hdl.handle.net/2077/55457

► We are constantly exposed to radiation in some form or another from our environment. High frequency electromagnetic radiation, including ultraviolet light and X-rays, cause damage… (more)

Subjects/Keywords: Microwaves; Microtubule; Light Scattering; X-ray Scattering

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APA (6^th Edition):

Harimoorthy, R. (2018). Effect of Microwaves on Microtubule Structure and Function probed by Light and X-ray Scattering. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/55457

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Harimoorthy, Rajiv. “Effect of Microwaves on Microtubule Structure and Function probed by Light and X-ray Scattering.” 2018. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed February 25, 2020. http://hdl.handle.net/2077/55457.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Harimoorthy, Rajiv. “Effect of Microwaves on Microtubule Structure and Function probed by Light and X-ray Scattering.” 2018. Web. 25 Feb 2020.

Vancouver:

Harimoorthy R. Effect of Microwaves on Microtubule Structure and Function probed by Light and X-ray Scattering. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 2018. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/2077/55457.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Harimoorthy R. Effect of Microwaves on Microtubule Structure and Function probed by Light and X-ray Scattering. [Thesis]. University of Gothenburg / Göteborgs Universitet; 2018. Available from: http://hdl.handle.net/2077/55457

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

17. Sahin, Onurcan. Light scatter in eye and its impact on vision.

Degree: 2018, University of Crete (UOC); Πανεπιστήμιο Κρήτης

URL: http://hdl.handle.net/10442/hedi/42565

► Introduction. The vision is the most fundamental and the most complex sense in the evolution progress. Although, the complete process of the visual function has… (more)

▼ Introduction. The vision is the most fundamental and the most complex sense in the evolution progress. Although, the complete process of the visual function has not been fully understood, there are several essential factors take part in the vision. The optics of the eye, the retina, and the visual cortex should be considered as a complete structure while evaluating the visual performance. The interaction between the light and the structures of the eye determine the quality of the retinal image which is the key factor for the visual performance.Two different interaction mechanisms of the light and the eye exists. The first mechanism is the optical interactions, which is detailed as optical properties of the eye and the second mechanism is detailed as the material properties of the eye. It is very important to understand and distinguish the difference between these two mechanisms. In order to have the good vision or in other words good retinal image quality, having the best refraction is as important as having transparent optics and clear optical way.Amount of the irregularities or defects induce straylight in the eye. Although, effects of intraocular scattering exist for ages and observed in the clinical practice, the knowledge and understanding of the intraocular scattering is not as good as the understanding of the refraction or aberrations. We believe that a complete analysis of visual performance will only be completed with analyzing the intraocular straylight. In this thesis, a novel optical device for measuring forward intraocular scattering with double pass method is developed and results are shown. The relevant chapters focus on several studies which worked on measuring, quantifying and understanding of the straylight phenomenon.MethodsThe proof of concept, repeatability, functionality of the device was tested with either in test or clinical conditions. The first study on the proof and concept and constancy evaluations were performed on an artificial eye and previously documented lenses. The straylight difference were evaluated of the artificial eye between different hard contact lenses which induce different amount of straylight. The second study was performed with an artificial eye for determining the effect of defocus on the measurements. The measurements were collected by changing the position of the retina which was corresponding inducing myopia or hyperopia. Additionally, the repeatability and the effect of axial alignment of the pupil camera was tested by taking consecutive measurements from the different axial positions from a healthy eye of a subject. In the third study, the scattering difference between healthy subjects and the effect of different diffusing filters which induce straylight were measured. Measurements with and without lenses and were evaluated.The final studies were performed under clinical conditions with healthy subjects and cataract patients. Optical and psychophysical measurements were performed as well as the LOCS III grading in these studies. Correlation between two methods of…

Subjects/Keywords: Σκέδαση; intraocular scattering

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APA (6^th Edition):

Sahin, O. (2018). Light scatter in eye and its impact on vision. (Thesis). University of Crete (UOC); Πανεπιστήμιο Κρήτης. Retrieved from http://hdl.handle.net/10442/hedi/42565

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sahin, Onurcan. “Light scatter in eye and its impact on vision.” 2018. Thesis, University of Crete (UOC); Πανεπιστήμιο Κρήτης. Accessed February 25, 2020. http://hdl.handle.net/10442/hedi/42565.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sahin, Onurcan. “Light scatter in eye and its impact on vision.” 2018. Web. 25 Feb 2020.

Vancouver:

Sahin O. Light scatter in eye and its impact on vision. [Internet] [Thesis]. University of Crete (UOC); Πανεπιστήμιο Κρήτης; 2018. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/10442/hedi/42565.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sahin O. Light scatter in eye and its impact on vision. [Thesis]. University of Crete (UOC); Πανεπιστήμιο Κρήτης; 2018. Available from: http://hdl.handle.net/10442/hedi/42565

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

18. Goswami, Aditi. Electron spin-flip scattering in graphene due to substrate impurities.

Degree: 2013, University of Minnesota

URL: http://purl.umn.edu/146387

►

University of Minnesota M.S. January 2013. Major: Electrical Engineering. Advisor: P. Paul Ruden. 1 computer file (PDF); vi, 34 pages.

Graphene has long been known… (more)

Subjects/Keywords: Graphene; Scattering; Spintronics

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APA (6^th Edition):

Goswami, A. (2013). Electron spin-flip scattering in graphene due to substrate impurities. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/146387

Chicago Manual of Style (16^th Edition):

Goswami, Aditi. “Electron spin-flip scattering in graphene due to substrate impurities.” 2013. Masters Thesis, University of Minnesota. Accessed February 25, 2020. http://purl.umn.edu/146387.

MLA Handbook (7^th Edition):

Goswami, Aditi. “Electron spin-flip scattering in graphene due to substrate impurities.” 2013. Web. 25 Feb 2020.

Vancouver:

Goswami A. Electron spin-flip scattering in graphene due to substrate impurities. [Internet] [Masters thesis]. University of Minnesota; 2013. [cited 2020 Feb 25]. Available from: http://purl.umn.edu/146387.

Council of Science Editors:

Goswami A. Electron spin-flip scattering in graphene due to substrate impurities. [Masters Thesis]. University of Minnesota; 2013. Available from: http://purl.umn.edu/146387

University of Minnesota

19. Goswami, Aditi. Electron spin-flip scattering in graphene due to substrate impurities.

Degree: Electrical Engineering, 2013, University of Minnesota

URL: http://purl.umn.edu/146387

► Graphene has long been known for its peculiar Dirac-like band structure which lends it many of its remarkable properties. It is a promising material for… (more)

Subjects/Keywords: Graphene; Scattering; Spintronics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Goswami, A. (2013). Electron spin-flip scattering in graphene due to substrate impurities. (Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/146387

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Goswami, Aditi. “Electron spin-flip scattering in graphene due to substrate impurities.” 2013. Thesis, University of Minnesota. Accessed February 25, 2020. http://purl.umn.edu/146387.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Goswami, Aditi. “Electron spin-flip scattering in graphene due to substrate impurities.” 2013. Web. 25 Feb 2020.

Vancouver:

Goswami A. Electron spin-flip scattering in graphene due to substrate impurities. [Internet] [Thesis]. University of Minnesota; 2013. [cited 2020 Feb 25]. Available from: http://purl.umn.edu/146387.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Goswami A. Electron spin-flip scattering in graphene due to substrate impurities. [Thesis]. University of Minnesota; 2013. Available from: http://purl.umn.edu/146387

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Lee, Julia Seungmi. Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography.

Degree: School of Engineering, 2018, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:792773/

► Cellular viability represents whether a cell is performing normal functions, relating to intracellular energy synthesis. Accurately quantifying the cellular viability would facilitate novel studies on… (more)

▼ Cellular viability represents whether a cell is performing normal functions, relating to intracellular energy synthesis. Accurately quantifying the cellular viability would facilitate novel studies on how pathological environments affect the functioning of cells in various diseases. Nevertheless, technologies for monitoring the cellular viability in live tissue models are currently lacking. This study aims at testing a recently developed technology, which integrates dynamic light scattering and optical coherence tomography (called DLS-OCT), to image the cellular viability with single-cell resolution. DLS analyzes fluctuations in light scattered by particles to measure diffusion or flow of the particles, and OCT uses coherence gating to collect light only scattered from a small volume for high-resolution structural imaging. Integrating the two technologies, DLS-OCT constructs high-resolution diffusion coefficient and flow velocity 3D maps. It is known that the motion of intracellular organelles, often called intracellular motility, resembles a random walk in the confined cytoplasm space, thus it can be quantified by the diffusion coefficient. Since the intracellular motility is correlated with the cell’s metabolism level, the diffusion coefficient map of DLS-OCT is expected to enable us to image the cellular viability. Here, the DLS-OCT imaging of cellular viability was validated by characterizing responses of the measured intracellular motility to the environmental conditions such as the temperature and pH, in animal retinal explant samples. First, we characterized our new OCT system and optimized scanning sequences and processing procedures for DLS-OCT data, to match the dynamic range of our DLS-OCT measurement with the typical range of intracellular motility. Both numerical simulation and phantom experiments were performed for optimization. Second, methods required for animal retinal explant experiments were established, and DLS-OCT data from retinal tissue while manipulating the cellular viability were acquired and analyzed, to test the technical hypothesis that DLS-OCT-measured intracellular motility of neurons significantly diminishes when the cellular viability levels are out of the physiological ranges. Similar operations were performed to tissue spheroids with additional morphological measurements. As a result, we measured individual cells’ healthiness for tempered conditions, which will enlighten studying cells’ healthiness during disease progress or therapeutic treatment in stroke, epilepsy, and Alzheimer’s disease among others. Advisors/Committee Members: Lee, Jonghwan (Advisor), Powers, Thomas (Reader), Hoffman-Kim, Diane (Reader).

Subjects/Keywords: Dynamic Light Scattering

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APA (6^th Edition):

Lee, J. S. (2018). Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography. (Thesis). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:792773/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lee, Julia Seungmi. “Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography.” 2018. Thesis, Brown University. Accessed February 25, 2020. https://repository.library.brown.edu/studio/item/bdr:792773/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lee, Julia Seungmi. “Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography.” 2018. Web. 25 Feb 2020.

Vancouver:

Lee JS. Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography. [Internet] [Thesis]. Brown University; 2018. [cited 2020 Feb 25]. Available from: https://repository.library.brown.edu/studio/item/bdr:792773/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lee JS. Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography. [Thesis]. Brown University; 2018. Available from: https://repository.library.brown.edu/studio/item/bdr:792773/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

21. Engelund, Oluf Tang. New applications of on-shell methods in quantum field theory.

Degree: PhD, Physics, 2014, Penn State University

URL: https://etda.libraries.psu.edu/catalog/22561

► This thesis incorporates 4 years of work: it gives a small introduction to the eld of scattering amplitudes and especially into the method of generalized… (more)

▼ This thesis incorporates 4 years of work: it gives a small introduction to the eld of scattering amplitudes and especially into the method of generalized unitarity then discuss 4 dierent projects all in the eld of scattering amplitudes. First we will look at a duality between correlation functions in a special lightlike limit and Wilson loops in N = 4 Super-Yang-Mills. The duality, originally suggested by Alday, Eden, Korchemsky, Maldacena and Sokatchev, was part of an eort to put a rmer footing on the duality between scattering amplitudes and Wilson loops. The duality between correlation functions and Wilson loops does not have any regularization issues (like the other duality) as both have infrared divergences in the specic limits considered. We show how the duality works vertex-by-vertex using just Feynman rules. The method is suciently general to allow for extensions of the original duality including operators not taking part in the special light-like limit, other types of operators as well as other theories than N = 4 Super-Yang-Mills. After that we look at how to use generalized unitarity for correlation functions with some examples from N = 4 Super-Yang-Mills. For computations one needs quantities known as form factors which have both asymptotic states like scattering amplitudes and local operators like correlation functions. We compute several form factors using modern methods from scattering amplitudes. Thirdly, we study how to use generalized unitarity for two-dimensional integrable systems. Two-dimensional systems have their own unique set of challenges but generalized unitarity can be adapted to them and we show how one can carry out tests of integrability which would otherwise be dicult. Finally, we look at the 3-dimensional theory known as ABJ(M). Its tree-level amplitudes can be incorporated into a single formula very reminiscent of a result in N = 4 Super-Yang-Mills. Since the result from N = 4 Super-Yang-Mills follow directly from a twistor string theory it is natural to guess that something similar could be true for ABJ(M). We construct a twistor string theory that after a certain set of projections give us the ABJ(M) formula.

Subjects/Keywords: Scattering Amplitudes; Integrability

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APA (6^th Edition):

Engelund, O. T. (2014). New applications of on-shell methods in quantum field theory. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/22561

Chicago Manual of Style (16^th Edition):

Engelund, Oluf Tang. “New applications of on-shell methods in quantum field theory.” 2014. Doctoral Dissertation, Penn State University. Accessed February 25, 2020. https://etda.libraries.psu.edu/catalog/22561.

MLA Handbook (7^th Edition):

Engelund, Oluf Tang. “New applications of on-shell methods in quantum field theory.” 2014. Web. 25 Feb 2020.

Vancouver:

Engelund OT. New applications of on-shell methods in quantum field theory. [Internet] [Doctoral dissertation]. Penn State University; 2014. [cited 2020 Feb 25]. Available from: https://etda.libraries.psu.edu/catalog/22561.

Council of Science Editors:

Engelund OT. New applications of on-shell methods in quantum field theory. [Doctoral Dissertation]. Penn State University; 2014. Available from: https://etda.libraries.psu.edu/catalog/22561

Universitat de Valencia

22. Díaz Aviñó, Carlos. Design of anisotropic nanostructures for light control .

Degree: 2018, Universitat de Valencia

URL: http://hdl.handle.net/10550/67220

► El rápido avance en métodos de micro- y nanofabricación, tanto teórica como experimentalmente, han hecho posible a día de hoy que podamos controlar el flujo… (more)

▼ El rápido avance en métodos de micro- y nanofabricación, tanto teórica como experimentalmente, han hecho posible a día de hoy que podamos controlar el flujo de luz con una precisión sin precedentes. Los metamateriales y las metasuperficies son nanoestructuras compuestas a partir de celdas unidad dise˜nadas, de forma que permitan manipular la luz con una respuesta estipulada. Como resultado de esto, los metamateriales han proporcinoado un gran número de posibles aplicaciones nuevas que antes eran inconcebibles. En esta Tesis Doctoral nos hemos centrado en el uso de estos metamateriales excepcionales para conseguir, específicamente, partículas indetectables y también para controlar el modelado de haces de luz. El objetivo principal de esta Tesis es proponer nuevas estructuras fotónicas basadas en metamateriales multicapa metal-dieléctricos que, gracias a su alta anisotropía de forma, son capaces de generar distribuciones de luz altamente localizadas, así como respuestas ópticamente inertes en el campo lejano. Hemos analizado el mecanismo para conseguir la cancelación de la dispersión en nanopartículas con simetría cilíndrica. Es posible ajustar con gran precisión la cancelación de la dispersión a diferentes longitudes de onda para conseguir invisibilidad si tenemos un control preciso tanto de la morfología como de la combinación apropiada de los materiales. Por otro lado, teniendo un dise˜no adecuado de metarrecubrimientos de tama˜no alrededor del nanómetro, podemos conseguir una fuerte focalización de ondas electromagnéticas con gran apertura numérica. Además, dado un campo convergente estos metarrecubrimientos pueden aumentar de forma significativa la apertura numérica. Es más, usando las metasuperficies dise˜nadas se puede moldear el haz para transformar ondas convergentes de gran angular en haces acelerados que presevan su forma. El trabajo que hemos llevado a cabo no se limita exclusivamente a desarrollos basados en fundamentos teóricos y simulaciones numéricas, sino que también nos involucramos en tareas experimentales. Siguiendo esta dirección, estudiamos las ondas de superficie de Dyakonov (DSWs), que se pueden encontrar en la interfase entre un medio birrefringente y otro isótropo. La excitación ocurre en el campo cercano bajo fotoluminiscencia, y la prueba de la existencia de las DSWs se basa en la determinación experimental de su constante de propagación compleja, cuya parte imaginaria es significativamente menor que la encontrada tanto en modos guiados como en leaky modes. Advisors/Committee Members: Zapata Rodríguez, Carlos (advisor).

Subjects/Keywords: scattering; plasmonics; metamaterials

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APA (6^th Edition):

Díaz Aviñó, C. (2018). Design of anisotropic nanostructures for light control . (Doctoral Dissertation). Universitat de Valencia. Retrieved from http://hdl.handle.net/10550/67220

Chicago Manual of Style (16^th Edition):

Díaz Aviñó, Carlos. “Design of anisotropic nanostructures for light control .” 2018. Doctoral Dissertation, Universitat de Valencia. Accessed February 25, 2020. http://hdl.handle.net/10550/67220.

MLA Handbook (7^th Edition):

Díaz Aviñó, Carlos. “Design of anisotropic nanostructures for light control .” 2018. Web. 25 Feb 2020.

Vancouver:

Díaz Aviñó C. Design of anisotropic nanostructures for light control . [Internet] [Doctoral dissertation]. Universitat de Valencia; 2018. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/10550/67220.

Council of Science Editors:

Díaz Aviñó C. Design of anisotropic nanostructures for light control . [Doctoral Dissertation]. Universitat de Valencia; 2018. Available from: http://hdl.handle.net/10550/67220

23. Wallin, Marina. Multiple electromagnetic scattering by spheres using the T-matrix formulation.

Degree: Physics, 2015, Umeå University

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105606

►

Low observable technology is used in order to prevent detection, or to delay detection. Radar cross section is an important parameter in aircraft survivability… (more)

▼

Low observable technology is used in order to prevent detection, or to delay detection. Radar cross section is an important parameter in aircraft survivability since it measures how detectable an object is with radar. To find the radar cross section Maxwell's equations are solved numerically in the time-domain using a finite difference scheme. This numerical method called Finite Difference Time Domain is very suitable for structures including complex materials. However, this numerical method needs to be verified for large scale simulations, due to numerical dispersion errors. Therefore it is desirable to verify the accuracy of the numerical simulations. In this project, the analytical solution to the multiple scattering by two spheres is implemented using the T-matrix formulation. The analytical solution to the scattering problem is first validated with the analytical Mie-series solution then compared to the Finite Difference Time Domain implementation. The results imply that the difference between the numerical and analytical solution is larger for higher frequencies and larger computational volumes.

Smygteknik används för att förhindra detektering, eller för att fördröja detektion av ett flygplan. Radarmålarea är en viktig parameter för skyddsprestanda hos flygplan eftersom den mäter hur detekterbar ett föremål är med radar. För att hitta radarmålarean löses Maxwells ekvationer numeriskt i tidsdomänen med hjälp av ett finit differensschema. Den numeriska metoden som kallas Finita differensmetoden i tidsdomän, är mycket lämplig för strukturer med komplexa material. Den numeriska metoden behöver valideras för storskaliga simuleringar eftersom det förekommer felaktigheter på grund av den numeriska dispersionen. Därför är det önskvärt att kontrollera riktigheten av de numeriska simuleringarna. I detta projekt, är den analytiska lösningen till multipelspridning av två sfärer implementerad med hjälp av T-matrismetoden. Den analytiska lösningen på spridningsproblemet valideras först mot den analytiska Mie-serielösningen och sedan jämförs den med resultatet av simuleringarna med Finita differensmetoden i tidsdomän. Resultaten antyder att skillnaden mellan den numeriska och analytiska lösningen är större för högre frekvenser och större beräkningsvolymer.

Subjects/Keywords: T-matrix; Multiple scattering; RCS; FDTD; Electromagnetic scattering; Mie scattering

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APA (6^th Edition):

Wallin, M. (2015). Multiple electromagnetic scattering by spheres using the T-matrix formulation. (Thesis). Umeå University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105606

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wallin, Marina. “Multiple electromagnetic scattering by spheres using the T-matrix formulation.” 2015. Thesis, Umeå University. Accessed February 25, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105606.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wallin, Marina. “Multiple electromagnetic scattering by spheres using the T-matrix formulation.” 2015. Web. 25 Feb 2020.

Vancouver:

Wallin M. Multiple electromagnetic scattering by spheres using the T-matrix formulation. [Internet] [Thesis]. Umeå University; 2015. [cited 2020 Feb 25]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105606.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wallin M. Multiple electromagnetic scattering by spheres using the T-matrix formulation. [Thesis]. Umeå University; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-105606

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University

24. Wu, Jian. Polaried Light Scattering from Individual Semiconductor Nanowires.

Degree: PhD, Physics, 2008, Penn State University

URL: https://etda.libraries.psu.edu/catalog/8991

► This thesis addresses the light scattering, particularly Raman and Rayleigh scattering from quasi one dimensional semiconductor nanowires, such as Zn1-xMnxS and GaP nanowires. Many of… (more)

▼ This thesis addresses the light scattering, particularly Raman and Rayleigh scattering from quasi one dimensional semiconductor nanowires, such as Zn1-xMnxS and GaP nanowires. Many of the results stem from measurements of individual wires. Four original works are presented in the thesis: (1) The growth of diluted magnetic semiconductor (DMS) Zn1-xMnxS (0≤x<0.6) nanowires using a three-zone furnace and two solid sources is reported (Chapter 2.4). The vibrational properties of the DMS nanowires with different Zn/Mn ratios were studied by correlating their Raman scattering spectra with the composition and structure measured by x-Ray energy dispersive spectroscopy (XEDS) and selected area electron diffraction (SAD). We find that the transverse optical (TO) phonon band disappears at the lowest Mn concentrations, while the longitudinal optical (LO) phonon band position was found insensitive to x. Three additional Raman bands were observed between the ZnS q=0 TO and LO phonons when Mn atoms were present in the nanowires (Chapter 5); (2) Polarized Raman scattering on individual crystalline GaP nanowires with diameters 40<d<600 nm are systematically investigated. At small diameters, d<70 nm, the nanowires are found to act like a nearly perfect dipole antenna and the bulk Raman selection rules are masked leading to a polarized scattering intensity function I(θ) ~ cos4θ where θ is the angle between nanowire axis and the incident laser polarization. For larger diameter (70<d<600 nm) nanowires, a model based on the interplay between photon confinement and bulk Raman scattering are proposed to explain the experimental data. This work realizes a fundamental understanding of Raman scattering in semiconductor nanowires and furthermore, the antenna effects are essential to the analysis of all electro-optic effects in small diameter filaments (Chapter 7); (3) Results of polarized Rayleigh back-scattering studies are reported the first time for individual ~10 μm long crystalline GaP nanowires using 514.5 nm excitation. The Rayleigh back-scattering intensity polar pattern I(θ) was measured at room temperature, where θ is the angle between the incident electric field and the nanowire axis. The collected radiation was polarized parallel to the incident electric field. For small nanowire diameter (d~70 nm), we observed ~cos4θ polar patterns. With increasing nanowire diameter above 100 nm, the polar scattering patterns rotate by 90° with respect to those seen in small diameter nanowires and then they rotate back again to cos4θ patterns and finally broaden to a circle. Our experimental data are compared to the Rayleigh back-scattering efficiency calculated via the discrete dipole approximation (DDA). Our DDA calculations show that the polar patterns are sensitive to both the diameter and the nanowire length. Although the calculated polar patterns qualitatively support our data, improvement in the modeling is still needed (Chapter 8); (4) Giant nonlinear Raman scattering of both Stokes and…

Subjects/Keywords: Antenna effect; Raman Scattering; Diluted Magnetic Semiconductor Nanowires; Semiconductor Nanowires; Rayleigh Scattering; Stimulated Raman Scattering

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APA (6^th Edition):

Wu, J. (2008). Polaried Light Scattering from Individual Semiconductor Nanowires. (Doctoral Dissertation). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/8991

Chicago Manual of Style (16^th Edition):

Wu, Jian. “Polaried Light Scattering from Individual Semiconductor Nanowires.” 2008. Doctoral Dissertation, Penn State University. Accessed February 25, 2020. https://etda.libraries.psu.edu/catalog/8991.

MLA Handbook (7^th Edition):

Wu, Jian. “Polaried Light Scattering from Individual Semiconductor Nanowires.” 2008. Web. 25 Feb 2020.

Vancouver:

Wu J. Polaried Light Scattering from Individual Semiconductor Nanowires. [Internet] [Doctoral dissertation]. Penn State University; 2008. [cited 2020 Feb 25]. Available from: https://etda.libraries.psu.edu/catalog/8991.

Council of Science Editors:

Wu J. Polaried Light Scattering from Individual Semiconductor Nanowires. [Doctoral Dissertation]. Penn State University; 2008. Available from: https://etda.libraries.psu.edu/catalog/8991

Stellenbosch University

25. Van Niekerk, David Douglas. Application of the relativistic random-phase and distorted wave impulse approximations to quasielastic proton-nucleus scattering.

Degree: Physics, 2010, Stellenbosch University

URL: http://hdl.handle.net/10019.1/5220

►

Thesis (PhD (Physics)) – University of Stelllenbosch, 2010.

ENGLISH ABSTRACT: In this dissertation a fully relativistic model for polarized inclusive quasielastic proton-nucleus scattering is developed. Using… (more)

▼

Thesis (PhD (Physics)) – University of Stelllenbosch, 2010.

ENGLISH ABSTRACT: In this dissertation a fully relativistic model for polarized inclusive quasielastic proton-nucleus scattering is developed. Using a standard relativistic impulse approximation (RIA) treatment of quasielastic scattering and a two-body SPVAT form of the current operator, it is shown how the behaviour of projectile and target can be decoupled. Subsequently, different models for projectile and target can be adopted and combined to examine a variety of relativistic effects. The most simplistic model of the target is provided by a mean-field nuclear matter approximation to the relativistic meson-nucleon model, quantum hadrodynamics (QHD). Here relativistic effects manifest as an effective mass, which is lower than the free mass, of the constituent nucleons. This model is improved upon by including many-body correlations through medium-modification of meson propagators in the relativistic random-phase approximation (RPA). Since it is generally accepted that the strong nuclear force and the extended range of the nuclear potential lead to distortion effects on the projectile and ejectile (seen as a modulation of the wave functions), our formalism is geared towards the use of relativistic distorted waves (RDWIA). The distorted waves are written as partial wave expansions and are solutions to the Dirac equation with potentials. The inclusion of distortions, however, greatly increases the computational burden and we show how a number of analytical and numerical techniques can be used to facilitate the process of calculation. It is also shown how the standard relativistic plane wave treatment (RPWIA) can, instead, be easily employed to obtain a baseline for determining the impact of distortions. A calculation is performed for the reaction 40Ca(!p, !p !) at a beam energy of 500 MeV. Here it is found that the effect of correlations on the RPWIA calculation can be seen as a quenching of the cross section that is expected to become more pronounced at lower energies or for higher density targets. A RDWIA calculation shows additional reduction and if target correlations are included this effect is enhanced. To our knowledge this is the first calculation that attempts to include both these effects (RPA and RDWIA) in the context of quasielastic proton-nucleus scattering.

AFRIKAANSE OPSOMMING: In hierdie proefskrif word ’n ten volle relatiwistiese model vir die berekening van inklusiewe kwasielastiese proton-kern verstrooiing daargestel. Deur gebruik te maak van ’n standaard relatiwistiese impulsbenadering (RIA) vir kwasi-elastiese verstrooiing asook ’n twee-deeltjie-SPVAT-vorm vir die stroom-operator, word daar gewys hoedat die gedrag van die projektiel en teiken ontkoppel kan word. Verskillende modelle kan dus vir die projektiel en teiken gebruik word om ’n verskeidenheid relatiwistiese effekte te bestudeer. Die mees simplistiese model vir die teiken word verskaf deur ’n gemiddelde-veld kernmateriaalbenadering tot die…

Advisors/Committee Members: Van der Ventel, B. I. S., Hillhouse, G. C., University of Stellenbosch. Faculty of Science. Dept. of Physics..

Subjects/Keywords: Physics; Scattering (Physics); Wave scattering; Quasielastic neutron scattering; Hadronic propagators; Hartree polarizations

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APA (6^th Edition):

Van Niekerk, D. D. (2010). Application of the relativistic random-phase and distorted wave impulse approximations to quasielastic proton-nucleus scattering. (Thesis). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/5220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Van Niekerk, David Douglas. “Application of the relativistic random-phase and distorted wave impulse approximations to quasielastic proton-nucleus scattering.” 2010. Thesis, Stellenbosch University. Accessed February 25, 2020. http://hdl.handle.net/10019.1/5220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Van Niekerk, David Douglas. “Application of the relativistic random-phase and distorted wave impulse approximations to quasielastic proton-nucleus scattering.” 2010. Web. 25 Feb 2020.

Vancouver:

Van Niekerk DD. Application of the relativistic random-phase and distorted wave impulse approximations to quasielastic proton-nucleus scattering. [Internet] [Thesis]. Stellenbosch University; 2010. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/10019.1/5220.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Van Niekerk DD. Application of the relativistic random-phase and distorted wave impulse approximations to quasielastic proton-nucleus scattering. [Thesis]. Stellenbosch University; 2010. Available from: http://hdl.handle.net/10019.1/5220

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

26. Bonomo, Anthony Lucas. On the use of the finite element method for the modeling of acoustic scattering from one-dimensional rough fluid-poroelastic interfaces.

Degree: MSin Engineering, Mechanical Engineering, 2014, University of Texas – Austin

URL: http://hdl.handle.net/2152/26240

► A poroelastic finite element formulation originally derived for modeling porous absorbing material in air is adapted to the problem of acoustic scattering from a poroelastic… (more)

Subjects/Keywords: Acoustic scattering; Poroelasticity; Rough surface scattering; Seafloor scattering; Biot theory; Finite element method

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APA (6^th Edition):

Bonomo, A. L. (2014). On the use of the finite element method for the modeling of acoustic scattering from one-dimensional rough fluid-poroelastic interfaces. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/26240

Chicago Manual of Style (16^th Edition):

Bonomo, Anthony Lucas. “On the use of the finite element method for the modeling of acoustic scattering from one-dimensional rough fluid-poroelastic interfaces.” 2014. Masters Thesis, University of Texas – Austin. Accessed February 25, 2020. http://hdl.handle.net/2152/26240.

MLA Handbook (7^th Edition):

Bonomo, Anthony Lucas. “On the use of the finite element method for the modeling of acoustic scattering from one-dimensional rough fluid-poroelastic interfaces.” 2014. Web. 25 Feb 2020.

Vancouver:

Bonomo AL. On the use of the finite element method for the modeling of acoustic scattering from one-dimensional rough fluid-poroelastic interfaces. [Internet] [Masters thesis]. University of Texas – Austin; 2014. [cited 2020 Feb 25]. Available from: http://hdl.handle.net/2152/26240.

Council of Science Editors:

Bonomo AL. On the use of the finite element method for the modeling of acoustic scattering from one-dimensional rough fluid-poroelastic interfaces. [Masters Thesis]. University of Texas – Austin; 2014. Available from: http://hdl.handle.net/2152/26240

The Ohio State University

27. Garbacz, Robert John. A generalized expansion for radiated and scattered fields .

Degree: PhD, Graduate School, 1968, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486648427871459

Subjects/Keywords: Engineering; Scattering

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APA (6^th Edition):

Garbacz, R. J. (1968). A generalized expansion for radiated and scattered fields . (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1486648427871459

Chicago Manual of Style (16^th Edition):

Garbacz, Robert John. “A generalized expansion for radiated and scattered fields .” 1968. Doctoral Dissertation, The Ohio State University. Accessed February 25, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486648427871459.

MLA Handbook (7^th Edition):

Garbacz, Robert John. “A generalized expansion for radiated and scattered fields .” 1968. Web. 25 Feb 2020.

Vancouver:

Garbacz RJ. A generalized expansion for radiated and scattered fields . [Internet] [Doctoral dissertation]. The Ohio State University; 1968. [cited 2020 Feb 25]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486648427871459.

Council of Science Editors:

Garbacz RJ. A generalized expansion for radiated and scattered fields . [Doctoral Dissertation]. The Ohio State University; 1968. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486648427871459

University of Georgia

28. Liu, Yongjun. Surface-enhanced Raman scattering from silver nanorod arrays fabricated by oblique angle deposition.

Degree: PhD, Physics, 2010, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/liu_yongjun_201005_phd

► Surface-enhanced Raman scattering (SERS) has been proven to be a promising and powerful analytical tool in environment monitoring, chemical and biological sensing, disease diagnosing and… (more)

▼ Surface-enhanced Raman scattering (SERS) has been proven to be a promising and powerful analytical tool in environment monitoring, chemical and biological sensing, disease diagnosing and homeland security checking. This dissertation focuses on the studies on a new SERS substrate platform – Ag nanorod arrays. We have fabricated Ag nanorod array substrates with different length at various deposition angles using oblique angle deposition (OAD) and the detailed structural characterizations have been performed for these samples. Semi-ordered Ag nanorod arrays have also been fabricated using template OAD method combining with electron beam lithography method. For Ag nanorod array substrates with a fixed stucture, SERS characterizations related to the excitation configuration have been systematically investigated. The SERS intensity strongly depends on the laser incident angle, polarization states and the reflectance from the underlayer of substrates. In order to understand these unique SERS properties, a modified Greenler’s model has been proposed. The theoretical calculations from this model can qualitatively explain these SERS properties. The SERS activity is also strongly dependent on the specific structures, such as length, diameter, and tilted angle of Ag nanorod and so on. For a fixed tilted angle, there exists an optimum length of Ag nanorod for SERS activity. At the same length, larger SERS intensity can be obtained from a larger tilted angle of Ag nanorods. With the increase of the diameter of Ag nanorods, the SERS intensity from template Ag nanorods decreases when the diameter of Ag nanorod is larger than 100 nm. To understand the SERS mechanism, the origin of SERS from Ag nanorod array has been investigated. Due to the anisotropic absorbance nature of Ag nanorod layer, our experiments indicate that most of SERS signal come from the molecules adsorbed on the side surface of Ag nanorods, not from the so called “hot spots” at the corner of between Ag nanorods and Ag film. We believe the Ag nanorod absorbance as a function of the thickness plays a critical role. Advisors/Committee Members: Yiping Zhao.

Subjects/Keywords: Surface-enhanced Raman scattering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Liu, Y. (2010). Surface-enhanced Raman scattering from silver nanorod arrays fabricated by oblique angle deposition. (Doctoral Dissertation). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/liu_yongjun_201005_phd

Chicago Manual of Style (16^th Edition):

Liu, Yongjun. “Surface-enhanced Raman scattering from silver nanorod arrays fabricated by oblique angle deposition.” 2010. Doctoral Dissertation, University of Georgia. Accessed February 25, 2020. http://purl.galileo.usg.edu/uga_etd/liu_yongjun_201005_phd.

MLA Handbook (7^th Edition):

Liu, Yongjun. “Surface-enhanced Raman scattering from silver nanorod arrays fabricated by oblique angle deposition.” 2010. Web. 25 Feb 2020.

Vancouver:

Liu Y. Surface-enhanced Raman scattering from silver nanorod arrays fabricated by oblique angle deposition. [Internet] [Doctoral dissertation]. University of Georgia; 2010. [cited 2020 Feb 25]. Available from: http://purl.galileo.usg.edu/uga_etd/liu_yongjun_201005_phd.

Council of Science Editors:

Liu Y. Surface-enhanced Raman scattering from silver nanorod arrays fabricated by oblique angle deposition. [Doctoral Dissertation]. University of Georgia; 2010. Available from: http://purl.galileo.usg.edu/uga_etd/liu_yongjun_201005_phd

29. Watanabe de Moraes, Marilena Matiko. Descrição microscópica do espalhamento 3He-\'alfa\' com interação dependente da densidade.

Degree: PhD, Física Nuclear, 1987, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/43/43131/tde-05122013-153625/ ;

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O espalhamento elástico de um sistema nuclear leve, He- SOB. 3, é analisado dentro do formalismo do Método de Coordenadas Geradoras usando o procedimento formulado… (more)

Subjects/Keywords: Espalhamento; Scattering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Watanabe de Moraes, M. M. (1987). Descrição microscópica do espalhamento 3He-\'alfa\' com interação dependente da densidade. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/43/43131/tde-05122013-153625/ ;

Chicago Manual of Style (16^th Edition):

Watanabe de Moraes, Marilena Matiko. “Descrição microscópica do espalhamento 3He-\'alfa\' com interação dependente da densidade.” 1987. Doctoral Dissertation, University of São Paulo. Accessed February 25, 2020. http://www.teses.usp.br/teses/disponiveis/43/43131/tde-05122013-153625/ ;.

MLA Handbook (7^th Edition):

Watanabe de Moraes, Marilena Matiko. “Descrição microscópica do espalhamento 3He-\'alfa\' com interação dependente da densidade.” 1987. Web. 25 Feb 2020.

Vancouver:

Watanabe de Moraes MM. Descrição microscópica do espalhamento 3He-\'alfa\' com interação dependente da densidade. [Internet] [Doctoral dissertation]. University of São Paulo; 1987. [cited 2020 Feb 25]. Available from: http://www.teses.usp.br/teses/disponiveis/43/43131/tde-05122013-153625/ ;.

Council of Science Editors:

Watanabe de Moraes MM. Descrição microscópica do espalhamento 3He-\'alfa\' com interação dependente da densidade. [Doctoral Dissertation]. University of São Paulo; 1987. Available from: http://www.teses.usp.br/teses/disponiveis/43/43131/tde-05122013-153625/ ;

30. Watari, Kazunori. Modelo do sub-aglomerado molecular no método do espalhamento múltiplo.

Degree: PhD, Física do Estado Sólido, 1980, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/43/43133/tde-28022014-122135/ ;

►

Desenvolvemos o formalismo matemático do modelo do sub-aglomerado (\"subcluster\") molecular no método do espalhamento múltiplo e aplicamo-lo no estudo da estrutura eletrônica do íon FE(CN)… (more)

Subjects/Keywords: Espalhamento; Scattering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Watari, K. (1980). Modelo do sub-aglomerado molecular no método do espalhamento múltiplo. (Doctoral Dissertation). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/43/43133/tde-28022014-122135/ ;

Chicago Manual of Style (16^th Edition):

Watari, Kazunori. “Modelo do sub-aglomerado molecular no método do espalhamento múltiplo.” 1980. Doctoral Dissertation, University of São Paulo. Accessed February 25, 2020. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-28022014-122135/ ;.

MLA Handbook (7^th Edition):

Watari, Kazunori. “Modelo do sub-aglomerado molecular no método do espalhamento múltiplo.” 1980. Web. 25 Feb 2020.

Vancouver:

Watari K. Modelo do sub-aglomerado molecular no método do espalhamento múltiplo. [Internet] [Doctoral dissertation]. University of São Paulo; 1980. [cited 2020 Feb 25]. Available from: http://www.teses.usp.br/teses/disponiveis/43/43133/tde-28022014-122135/ ;.

Council of Science Editors:

Watari K. Modelo do sub-aglomerado molecular no método do espalhamento múltiplo. [Doctoral Dissertation]. University of São Paulo; 1980. Available from: http://www.teses.usp.br/teses/disponiveis/43/43133/tde-28022014-122135/ ;

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