subject:(anisotropic)

Louisiana State University

1. Joe, Anton. Anisotropic Spacetimes and Black Hole Interiors in Loop Quantum Gravity.

Degree: PhD, Physical Sciences and Mathematics, 2015, Louisiana State University

URL: etd-11192015-140114 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3485

► This thesis deals with understanding quantum gravitational effects in those anisotropic spacetimes which serve as black hole interiors. Two types of spacetime are investigated. Kantowski-Sachs… (more)

▼ This thesis deals with understanding quantum gravitational effects in those anisotropic spacetimes which serve as black hole interiors. Two types of spacetime are investigated. Kantowski-Sachs spacetime and Bianchi-III LRS spacetime. The former, in vacuum, is the interor spacetime for Schwarzschild black holes. The latter is the interior for higher genus black holes. These spacetimes are studied in the context of loop quantum cosmology. Using effective dynamics of loop quantum cosmology, the behavior of expansion and shear scalars in different proposed quantizations of the Kantowski-Sachs spacetime with matter is investigated. It is found that out of the various proposed choices, there is only one known prescription which leads to the generic bounded behavior of these scalars. The bounds turn out to be universal and are determined by the underlying quantum geometry. This quantization is analogous to the so called ‘improved dynamics’ in the isotropic loop quantum cosmology, which is also the only one to respect the freedom of the rescaling of the fiducial cell at the level of effective spacetime description. Other proposed quantization prescriptions yield expansion and shear scalars which may not be bounded for certain initial conditions within the validity of effective spacetime description. These prescriptions also have a limitation that the “quantum geometric effects” can occur at an arbitrary scale. We show that the ‘improved dynamics’ of Kantowski-Sachs spacetime turns out to be a unique choice in a general class of possible quantization prescriptions, in the sense of leading to generic bounds on expansion and shear scalars and the associated physics being free from fiducial cell dependence. The behavior of the energy density in the ‘improved dynamics’ reveals some interesting features. Even without considering any details of the dynamical evolution, it is possible to rule out pancake singularities in this spacetime. The energy density is found to be dynamically bounded. These results show that the Planck scale physics of the loop quantized Kantowski-Sachs spacetime has key features common with the loop quantization of isotropic and Bianchi-I spacetimes. The loop quantum dynamics of Kantowski-Sachs spacetime and the interior of higher genus black hole spacetimes with a cosmological constant has some peculiar features not shared by various other spacetimes in loop quantum cosmology. As in the other cases, though the quantum geometric effects resolve the physical singularity and result in a non-singular bounce, after the bounce a spacetime with small spacetime curvature does not emerge in either the subsequent backward or the forward evolution. Rather, in the asymptotic limit the spacetime manifold is a product of two constant curvature spaces. Interestingly, though the spacetime curvature of these asymptotic spacetimes is very high, their effective metric is a solution to the Einstein’s field equations. Analysis of the components of the Ricci tensor shows that after the singularity resolution, the Kantowski-Sachs…

Subjects/Keywords: Anisotropic spacetimes

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APA (6^th Edition):

Joe, A. (2015). Anisotropic Spacetimes and Black Hole Interiors in Loop Quantum Gravity. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-11192015-140114 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3485

Chicago Manual of Style (16^th Edition):

Joe, Anton. “Anisotropic Spacetimes and Black Hole Interiors in Loop Quantum Gravity.” 2015. Doctoral Dissertation, Louisiana State University. Accessed January 26, 2021. etd-11192015-140114 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3485.

MLA Handbook (7^th Edition):

Joe, Anton. “Anisotropic Spacetimes and Black Hole Interiors in Loop Quantum Gravity.” 2015. Web. 26 Jan 2021.

Vancouver:

Joe A. Anisotropic Spacetimes and Black Hole Interiors in Loop Quantum Gravity. [Internet] [Doctoral dissertation]. Louisiana State University; 2015. [cited 2021 Jan 26]. Available from: etd-11192015-140114 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3485.

Council of Science Editors:

Joe A. Anisotropic Spacetimes and Black Hole Interiors in Loop Quantum Gravity. [Doctoral Dissertation]. Louisiana State University; 2015. Available from: etd-11192015-140114 ; https://digitalcommons.lsu.edu/gradschool_dissertations/3485

University of Alberta

2. Yan, Lujie. Study of Anisotropic Surface Property of Phyllosilicates by Atomic Force Microscopy.

Degree: PhD, Department of Chemical and Materials Engineering, 2013, University of Alberta

URL: https://era.library.ualberta.ca/files/ks65hd821

► The phyllosilicates are an important class of valuable industrial minerals and play an essential role in many disciplines. The surface properties of phyllosilicate minerals are… (more)

▼ The phyllosilicates are an important class of valuable industrial minerals and play an essential role in many disciplines. The surface properties of phyllosilicate minerals are a topic of crucial importance as they directly affect all industrial aspects in mineral processing. The objective of this research is to investigate the anisotropic surface properties of selected phyllosilicate minerals, focuing on surface charging properties of their basal planes and edge surfaces, and their related particle interactions and rheological properties of particle suspensions. An ultramicrotome cutting technique was developed to prepare molecularly smooth edge surfaces of phyllosilicates, which allows direct measurement of interaction forces between AFM tips and the prepared surfaces in various electrolyte solutions. A theoretical model based on the geometry of AFM tip was used to fit the measured force profiles to the classical DLVO theory at different boundary conditions, which allows direct determination of Stern potentials of different phyllosilicate surfaces. The surface charging behavior of muscovite and talc basal planes and edge surfaces was determined as a function of pH. The basal planes of both muscovite and talc were found to carry a pH-independent permanent negative charge, while the charges on their edge surfaces were highly pH-dependent. The effect of the concentration of two divalent cations: Mg2+ and Ca2+ on the Stern potential of different surfaces of phyllosilicate minerals was investigated. The interaction energies of various associations between talc surfaces, such as basal plane-basal plane, edge-edge and basal plane-edge were calculated using the Stern potential values of talc basal planes and edge surfaces obtained from fitting the measured force profiles to the classical DLVO theory. The attractive interaction between talc basal planes and edge surfaces was found to dominate the rheological behavior of talc suspensions. The findings from this dissertation are anticipated to provide a basis for understanding the colloidal behavior of phyllosilicates in mineral processing and hence better control their process performance.

Subjects/Keywords: anisotropic; phyllosilicate; AFM

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APA (6^th Edition):

Yan, L. (2013). Study of Anisotropic Surface Property of Phyllosilicates by Atomic Force Microscopy. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/ks65hd821

Chicago Manual of Style (16^th Edition):

Yan, Lujie. “Study of Anisotropic Surface Property of Phyllosilicates by Atomic Force Microscopy.” 2013. Doctoral Dissertation, University of Alberta. Accessed January 26, 2021. https://era.library.ualberta.ca/files/ks65hd821.

MLA Handbook (7^th Edition):

Yan, Lujie. “Study of Anisotropic Surface Property of Phyllosilicates by Atomic Force Microscopy.” 2013. Web. 26 Jan 2021.

Vancouver:

Yan L. Study of Anisotropic Surface Property of Phyllosilicates by Atomic Force Microscopy. [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Jan 26]. Available from: https://era.library.ualberta.ca/files/ks65hd821.

Council of Science Editors:

Yan L. Study of Anisotropic Surface Property of Phyllosilicates by Atomic Force Microscopy. [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/ks65hd821

3. Vallefuoco, Donato. Numerical study of unconfined and confined anisotropic turbulence : Etude numérique de la turbulence anisotrope homogène ou confinée.

Degree: Docteur es, Mécanique des fluides, 2017, Lyon

URL: http://www.theses.fr/2017LYSEC053

► Pour les écoulements turbulents d’intérêt pratique, la turbulence interagit avec le confinement et les forces externes, ce qui cause inhomogénéité et anisotropie statistiques. Isoler leur… (more)

▼ Pour les écoulements turbulents d’intérêt pratique, la turbulence interagit avec le confinement et les forces externes, ce qui cause inhomogénéité et anisotropie statistiques. Isoler leur contribution à des statistiques ciblées est indispensable pour comprendre les différents phénomènes physiques. Le but de cette thèse a donc été d’acquérir une meilleure connaissance de l’anisotropie en fonction de la direction et de l’échelle dans un ensemble de contextes idéalisés et réalistes. On a utilisé une caractérisation statistique dans l’espace spectral ainsi que dans l’espace de séparation. La caractérisation dans l’espace spectral concerne les statistiques anisotropes de turbulence sous forme de spectres directionnels d’énergie, polarisation et hélicité. La caractérisation dans l’espace de séparation s’appuie sur les moments des incréments de vitesse à deux points du deuxième et troisième ordre, et sur les corrélations de vitesse à deux points. Tout d’abord, on a étudié l’effet du forçage spectral de grandes échelles. Les schémas de forçage considérés sont le schéma de forçage de type Euler, non hélicitaire et hélicitaire, et le schéma ABC. On a montré que les deux forçages ont un inconvénient, dans le sens que, si le nombre de modes suffisamment excités est petit, de l’anisotropie se produit même aux petites échelles. Dans le cas du forçage Euler, cela dépend de la gamme de nombres d’onde forcés ainsi que de leur hélicité. Le forçage ABC, pour lequel le niveau d’hélicité injectée ne peut pas être contrôlé, n’excite que six modes et donc il produit toujours de l’anisotropie et à toutes les échelles résolues. Ensuite, on a analysé l’anisotropie en fonction de l’échelle et de la direction pour la turbulence homogène en rotation. Chose étonnante, l’anisotropie se produit à toutes les échelles même si la rotation est faible. En particulier, on a identifié deux gammes d’échelles anisotropes qualitativement différentes. Aux grandes échelles, l’anisotropie directionnelle est plus grande et décroît avec le nombre d’onde. Aux petites échelles, elle est beaucoup plus faible—mais encore significative—et croit lentement avec le nombre d’onde jusqu’aux échelles dissipatives. Une autre conclusion intéressante et originale de cette partie du travail concerne le rôle de l’échelle de Zeman et son lien avec l’anisotropie aux différentes échelles de l’écoulement. D’après des travaux précédents, l’échelle de Zeman devrait être l’échelle de longueur caractéristique qui sépare les échelles affectées par la rotation par les échelles isotropes. Après une plus ample investigation, en utilisant simulations à différents paramètres, on a découvert que l’échelle de séparation entre grande et faible anisotropie est plutôt l’échelle de longueur caractéristique pour laquelle les effets de rotation et de dissipation s’équilibrent. Ce résultat, toutefois, n’est pas en contradiction avec l’argument de Zeman sur le rétablissement de l’isotropie dans la limite asymptotique de viscosité nulle, comme l’échelle de séparation s’annule à nombre de Reynolds… Advisors/Committee Members: Godeferd, Fabien (thesis director), Naso, Aurore (thesis director).

Subjects/Keywords: Anisotropie; Anisotropic turbulence

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APA (6^th Edition):

Vallefuoco, D. (2017). Numerical study of unconfined and confined anisotropic turbulence : Etude numérique de la turbulence anisotrope homogène ou confinée. (Doctoral Dissertation). Lyon. Retrieved from http://www.theses.fr/2017LYSEC053

Chicago Manual of Style (16^th Edition):

Vallefuoco, Donato. “Numerical study of unconfined and confined anisotropic turbulence : Etude numérique de la turbulence anisotrope homogène ou confinée.” 2017. Doctoral Dissertation, Lyon. Accessed January 26, 2021. http://www.theses.fr/2017LYSEC053.

MLA Handbook (7^th Edition):

Vallefuoco, Donato. “Numerical study of unconfined and confined anisotropic turbulence : Etude numérique de la turbulence anisotrope homogène ou confinée.” 2017. Web. 26 Jan 2021.

Vancouver:

Vallefuoco D. Numerical study of unconfined and confined anisotropic turbulence : Etude numérique de la turbulence anisotrope homogène ou confinée. [Internet] [Doctoral dissertation]. Lyon; 2017. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2017LYSEC053.

Council of Science Editors:

Vallefuoco D. Numerical study of unconfined and confined anisotropic turbulence : Etude numérique de la turbulence anisotrope homogène ou confinée. [Doctoral Dissertation]. Lyon; 2017. Available from: http://www.theses.fr/2017LYSEC053

Victoria University of Wellington

4. Dawson, Andrew Paul. High Frequency Ultrasonic Wave Propagation in Anisotropic Materials.

Degree: 2010, Victoria University of Wellington

URL: http://hdl.handle.net/10063/1624

► The influence of highly regular, anisotropic, microstructured materials on high frequency ultrasonic wave propagation was investigated in this work. Microstructure, often only treated as a… (more)

▼ The influence of highly regular, anisotropic, microstructured materials on high frequency ultrasonic wave propagation was investigated in this work. Microstructure, often only treated as a source of scattering, significantly influences high frequency ultrasonic waves, resulting in unexpected guided wave modes. Tissues, such as skin or muscle, are treated as homogeneous by current medical ultrasound systems, but actually consist of highly anisotropic micron-sized fibres. As these systems increase towards 100 MHz, these fibres will significantly influence propagating waves leading to guided wave modes. The effect of these modes on image quality must be considered. However, before studies can be undertaken on fibrous tissues, wave propagation in more ideal structures must be first understood. After the construction of a suitable high frequency ultrasound experimental system, finite element modelling and experimental characterisation of high frequency (20-200 MHz) ultrasonic waves in ideal, collinear, nanostructured alumina was carried out. These results revealed interesting waveguiding phenomena, and also identified the potential and significant advantages of using a microstructured material as an alternative acoustic matching layer in ultrasonic transducer design. Tailorable acoustic impedances were achieved from 4-17 MRayl, covering the impedance range of 7-12 MRayl most commonly required by transducer matching layers. Attenuation coefficients as low as 3.5 dBmm-1 were measured at 100 MHz, which is excellent when compared with 500 dBmm-1 that was measured for a state of the art loaded epoxy matching layer at the same frequency. Reception of ultrasound without the restriction of critical angles was also achieved, and no dispersion was observed in these structures (unlike current matching layers) until at least 200 MHz. In addition, to make a significant step forward towards high frequency tissue characterisation, novel microstructured poly(vinyl alcohol) tissue-mimicking phantoms were also developed. These phantoms possessed acoustic and microstructural properties representative of fibrous tissues, much more realistic than currently used homogeneous phantoms. The attenuation coefficient measured along the direction of PVA alignment in an example phantom was 8 dBmm-1 at 30 MHz, in excellent agreement with healthy human myocardium. This method will allow the fabrication of more realistic and repeatable phantoms for future high frequency tissue characterisation studies. Advisors/Committee Members: Harris, Paul, Gouws, Gideon.

Subjects/Keywords: Ultrasonic; Anisotropic; Propagation

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APA (6^th Edition):

Dawson, A. P. (2010). High Frequency Ultrasonic Wave Propagation in Anisotropic Materials. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/1624

Chicago Manual of Style (16^th Edition):

Dawson, Andrew Paul. “High Frequency Ultrasonic Wave Propagation in Anisotropic Materials.” 2010. Doctoral Dissertation, Victoria University of Wellington. Accessed January 26, 2021. http://hdl.handle.net/10063/1624.

MLA Handbook (7^th Edition):

Dawson, Andrew Paul. “High Frequency Ultrasonic Wave Propagation in Anisotropic Materials.” 2010. Web. 26 Jan 2021.

Vancouver:

Dawson AP. High Frequency Ultrasonic Wave Propagation in Anisotropic Materials. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2010. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10063/1624.

Council of Science Editors:

Dawson AP. High Frequency Ultrasonic Wave Propagation in Anisotropic Materials. [Doctoral Dissertation]. Victoria University of Wellington; 2010. Available from: http://hdl.handle.net/10063/1624

5. MC GUINNESS, ROBERT LEO. Topological photonics with anisotropic materials.

Degree: School of Physics. Discipline of Physics, 2020, Trinity College Dublin

URL: http://hdl.handle.net/2262/91466

► In this thesis we investigate several aspects of the topological characterisation of light propagating through matter, or topological photonics. Throughout we will focus on anisotropic… (more)

▼ In this thesis we investigate several aspects of the topological characterisation of light propagating through matter, or topological photonics. Throughout we will focus on anisotropic dielectrics in which the optical response depends on the polarisation and direction of propagation of the incident light. We will explore both homogeneous dielectric media and periodically patterned optical materials known as photonic crystals. The investigations will be conducted in either the weak coupling regime, where the solutions of the wave equation describe photons, and in the strong coupling regime, where the solutions describe mixed light-matter polaritons. Our first investigation considers the topological classification of the refractive index surfaces of homogeneous optical materials. This classification is done by computing the Chern number topological invariant. The particular materials we focus on are biaxial dielectrics which additionally exhibit either of two forms of optical activity. In the absence of any optical activity the refractive index surfaces of biaxial materials exhibit four Dirac point degeneracies in direction space. Once optical activity is introduced the degeneracies of the refractive index surface are lifted. We discover that one of these forms of optical activity can lift the degeneracies in such a way as to produce a non-zero Chern number. We also use the paraxial approximation to derive a Hamiltonian which evolves light through biaxial optically active materials in directions close to one of the lifted degeneracies. Next we turn to assessing the topological classification of photonic crystals composed of anisotropic optically active materials. We do this by adapting the derived Hamiltonian to describe periodic optical media with a definite patterning geometry. The two patterning geometries we consider are square and triangular lattices. We find that, for any combination of lattice and optical activity variant, topologically non-trivial iso-frequency surfaces are possible. We compare and contrast these results with each other and with the conclusions on homogeneous materials. We explore the implications of the non-zero Chern number for the periodic systems. In particular, the prospect of edge states for the anisotropic photonic crystals is investigated. Our final investigation considers the topologically protected degeneracies of the dispersion relation of polaritons. In particular, we are interested in the polaritons that form from the coupling of light to excitons in bulk magnetically biased semiconductors. In direct band-gap zincblende semiconductors the introduction of an external magnetic field results in an anisotropic and multiply-resonant optical response. We derive this optical response and use it to determine the polariton dispersion relation. We find that the resulting polariton dispersion features an abundance of topologically protected degeneracies, both in the absence and presence of dissipation. Advisors/Committee Members: Eastham, Paul.

Subjects/Keywords: Anisotropic; Topological; Photonics

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APA (6^th Edition):

MC GUINNESS, R. L. (2020). Topological photonics with anisotropic materials. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/91466

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):

MC GUINNESS, ROBERT LEO. “Topological photonics with anisotropic materials.” 2020. Thesis, Trinity College Dublin. Accessed January 26, 2021. http://hdl.handle.net/2262/91466.

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

MLA Handbook (7^th Edition):

MC GUINNESS, ROBERT LEO. “Topological photonics with anisotropic materials.” 2020. Web. 26 Jan 2021.

Vancouver:

MC GUINNESS RL. Topological photonics with anisotropic materials. [Internet] [Thesis]. Trinity College Dublin; 2020. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2262/91466.

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

Council of Science Editors:

MC GUINNESS RL. Topological photonics with anisotropic materials. [Thesis]. Trinity College Dublin; 2020. Available from: http://hdl.handle.net/2262/91466

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

University of Alberta

6. Ondrus, Alexander A. Minimal anisotropic groups of higher real rank.

Degree: PhD, Department of Mathematical and Statistical Sciences, 2010, University of Alberta

URL: https://era.library.ualberta.ca/files/mg74qm37v

► The purpose of this thesis is to give a classification of anisotropic algebraic groups over number fields of higher real rank. This will complete the… (more)

Subjects/Keywords: anisotropic; algebraic groups; lattices

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APA (6^th Edition):

Ondrus, A. A. (2010). Minimal anisotropic groups of higher real rank. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/mg74qm37v

Chicago Manual of Style (16^th Edition):

Ondrus, Alexander A. “Minimal anisotropic groups of higher real rank.” 2010. Doctoral Dissertation, University of Alberta. Accessed January 26, 2021. https://era.library.ualberta.ca/files/mg74qm37v.

MLA Handbook (7^th Edition):

Ondrus, Alexander A. “Minimal anisotropic groups of higher real rank.” 2010. Web. 26 Jan 2021.

Vancouver:

Ondrus AA. Minimal anisotropic groups of higher real rank. [Internet] [Doctoral dissertation]. University of Alberta; 2010. [cited 2021 Jan 26]. Available from: https://era.library.ualberta.ca/files/mg74qm37v.

Council of Science Editors:

Ondrus AA. Minimal anisotropic groups of higher real rank. [Doctoral Dissertation]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/mg74qm37v

University of Alberta

7. Swan, Amanda C. An Anisotropic Diffusion Model for Brain Tumour Spread.

Degree: PhD, Department of Mathematical and Statistical Sciences, 2016, University of Alberta

URL: https://era.library.ualberta.ca/files/cpr76f371p

► Gliomas, tumours arising from the glial cells of the nervous system, are some of the most difficult tumours to treat. In particular, glioblastoma are a… (more)

▼ Gliomas, tumours arising from the glial cells of the nervous system, are some of the most difficult tumours to treat. In particular, glioblastoma are a particularly aggressive glioma subtype carrying a life expectancy of only 14 months. Typically, treatment combines surgery, radiation and chemotherapy where a key component of treatment planning is determining an appropriate treatment region over which to administer radiation therapy. Because gliomas are diffuse, only the main tumour mass shows up using imaging, while many undetectable cancer cells infiltrate the surrounding brain tissue. To account for this, treatment regions typically extend the visible tumour mass by a uniform 2 \centi \meter margin. We propose that a mathematical model for glioma cell density could help by modelling the spread of cancer cells and contribute to treatment plans that target the largest densities of these undetectable cells. In this thesis, we focus on the Painter-Hillen model for glioma spread, which uses anisotropic diffusion, allowing the rate of spread of the cells to vary with direction. This is meant to simulate the biological phenomenon where cancer cells spread preferentially along the fibrous white matter tracts within the brain, resulting in tumours having irregular shapes and projections. We establish the utility of this model by implementing it using data from ten patients, in both two and three dimensions. For comparison, a previous isotropic glioma model, the Swanson model, is used, as it has been applied successfully in a clinical setting. The results of our simulations indicate that the inclusion of anisotropy offers an advantage over the previous model. Finally, we develop two extensions to the Painter-Hillen model. In Chapter~6, we explore the derivation of a ``mass effect'' model, using a multiphase model framework. The mass effect model includes the forces induced by the growing mass, introducing a mechanical component to the model. This effect becomes important where a tumour is growing in close proximity to the skull, where the growth in this direction will be impeded by the pressure generated by the increased density. In Chapter 7, we discuss an extension of the Painter-Hillen model, using a transport model framework. The generalization considered allows the turning rate to vary with the direction that a cell is travelling in relation to the underlying structure, since a cell travelling along a fibre will turn less frequently than one travelling perpendicularly. Both of these model extensions have potential for further exploration.

Subjects/Keywords: Anisotropic Diffusion; Glioma; Mathematical Biology

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APA (6^th Edition):

Swan, A. C. (2016). An Anisotropic Diffusion Model for Brain Tumour Spread. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/cpr76f371p

Chicago Manual of Style (16^th Edition):

Swan, Amanda C. “An Anisotropic Diffusion Model for Brain Tumour Spread.” 2016. Doctoral Dissertation, University of Alberta. Accessed January 26, 2021. https://era.library.ualberta.ca/files/cpr76f371p.

MLA Handbook (7^th Edition):

Swan, Amanda C. “An Anisotropic Diffusion Model for Brain Tumour Spread.” 2016. Web. 26 Jan 2021.

Vancouver:

Swan AC. An Anisotropic Diffusion Model for Brain Tumour Spread. [Internet] [Doctoral dissertation]. University of Alberta; 2016. [cited 2021 Jan 26]. Available from: https://era.library.ualberta.ca/files/cpr76f371p.

Council of Science Editors:

Swan AC. An Anisotropic Diffusion Model for Brain Tumour Spread. [Doctoral Dissertation]. University of Alberta; 2016. Available from: https://era.library.ualberta.ca/files/cpr76f371p

McMaster University

8. Wu, Rong. ANISOTROPIC WETTING SURFACES MACHINED BY DIAMOND TOOL WITH TIPS MICROSTRUCTURED BY FOCUSED ION BEAM.

Degree: MSME, 2019, McMaster University

URL: http://hdl.handle.net/11375/24770

►

In recent years, there has been an increasing interest in the study of hydrophobic surfaces. Hydrophobic surfaces have been used in multiple applications in microfluidic… (more)

Subjects/Keywords: Anisotropic wetting; Focused ion beam

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APA (6^th Edition):

Wu, R. (2019). ANISOTROPIC WETTING SURFACES MACHINED BY DIAMOND TOOL WITH TIPS MICROSTRUCTURED BY FOCUSED ION BEAM. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/24770

Chicago Manual of Style (16^th Edition):

Wu, Rong. “ANISOTROPIC WETTING SURFACES MACHINED BY DIAMOND TOOL WITH TIPS MICROSTRUCTURED BY FOCUSED ION BEAM.” 2019. Masters Thesis, McMaster University. Accessed January 26, 2021. http://hdl.handle.net/11375/24770.

MLA Handbook (7^th Edition):

Wu, Rong. “ANISOTROPIC WETTING SURFACES MACHINED BY DIAMOND TOOL WITH TIPS MICROSTRUCTURED BY FOCUSED ION BEAM.” 2019. Web. 26 Jan 2021.

Vancouver:

Wu R. ANISOTROPIC WETTING SURFACES MACHINED BY DIAMOND TOOL WITH TIPS MICROSTRUCTURED BY FOCUSED ION BEAM. [Internet] [Masters thesis]. McMaster University; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11375/24770.

Council of Science Editors:

Wu R. ANISOTROPIC WETTING SURFACES MACHINED BY DIAMOND TOOL WITH TIPS MICROSTRUCTURED BY FOCUSED ION BEAM. [Masters Thesis]. McMaster University; 2019. Available from: http://hdl.handle.net/11375/24770

Colorado State University

9. Carter, Megan. Structure energy relationship of biological halogen bonds.

Degree: PhD, Biochemistry and Molecular Biology, 2012, Colorado State University

URL: http://hdl.handle.net/10217/68156

► The primary goal of the studies in this thesis is to derive a set of mathematical models to describe the anisotropic atomic nature of covalent… (more)

Subjects/Keywords: anisotropic electrostatic distribution; halogen bond

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APA (6^th Edition):

Carter, M. (2012). Structure energy relationship of biological halogen bonds. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/68156

Chicago Manual of Style (16^th Edition):

Carter, Megan. “Structure energy relationship of biological halogen bonds.” 2012. Doctoral Dissertation, Colorado State University. Accessed January 26, 2021. http://hdl.handle.net/10217/68156.

MLA Handbook (7^th Edition):

Carter, Megan. “Structure energy relationship of biological halogen bonds.” 2012. Web. 26 Jan 2021.

Vancouver:

Carter M. Structure energy relationship of biological halogen bonds. [Internet] [Doctoral dissertation]. Colorado State University; 2012. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10217/68156.

Council of Science Editors:

Carter M. Structure energy relationship of biological halogen bonds. [Doctoral Dissertation]. Colorado State University; 2012. Available from: http://hdl.handle.net/10217/68156

University of Houston

10. Jin, Muqing 1991-. Anisotropic Flow Fluctuations in Very Central Pb-Pb √(s_NN ) = 2.76 TeV Collisions.

Degree: PhD, Physics, 2019, University of Houston

URL: http://hdl.handle.net/10657/4472

► An extremely hot and dense medium where quarks and gluons become deconfined from their typical hadronic states known as the Quark-Gluon Plasma (QGP), is created… (more)

Subjects/Keywords: Anisotropic flow; Flow fluctuation

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APA (6^th Edition):

Jin, M. 1. (2019). Anisotropic Flow Fluctuations in Very Central Pb-Pb √(s_NN ) = 2.76 TeV Collisions. (Doctoral Dissertation). University of Houston. Retrieved from http://hdl.handle.net/10657/4472

Chicago Manual of Style (16^th Edition):

Jin, Muqing 1991-. “Anisotropic Flow Fluctuations in Very Central Pb-Pb √(s_NN ) = 2.76 TeV Collisions.” 2019. Doctoral Dissertation, University of Houston. Accessed January 26, 2021. http://hdl.handle.net/10657/4472.

MLA Handbook (7^th Edition):

Jin, Muqing 1991-. “Anisotropic Flow Fluctuations in Very Central Pb-Pb √(s_NN ) = 2.76 TeV Collisions.” 2019. Web. 26 Jan 2021.

Vancouver:

Jin M1. Anisotropic Flow Fluctuations in Very Central Pb-Pb √(s_NN ) = 2.76 TeV Collisions. [Internet] [Doctoral dissertation]. University of Houston; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10657/4472.

Council of Science Editors:

Jin M1. Anisotropic Flow Fluctuations in Very Central Pb-Pb √(s_NN ) = 2.76 TeV Collisions. [Doctoral Dissertation]. University of Houston; 2019. Available from: http://hdl.handle.net/10657/4472

Delft University of Technology

11. van Marlen, Patricia (author). Linear and anisotropic diffusion in image processing: A study on implementation, parameters and segmentation.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:05d331d1-72ef-4c65-9c92-2a5c132ad7eb

► The TU Delft and the LUMC are creating a low-field MRI scanner to use in third world countries. This type of MRI scanner has many… (more)

▼ The TU Delft and the LUMC are creating a low-field MRI scanner to use in third world countries. This type of MRI scanner has many advantages, but a downside is the amount of noise in the obtained images. A way to reduce noise is diffusion filtering. This thesis discusses the theory of some linear and nonlinear diffusion filtering methods and tests them on several test problems. The methods range from the basic linear method, the heat equation, to the more advanced Perona-Malik method. The results indeed show that the Perona-Malik method generates better results, sometimes when combined with a Gaussian kernel to decrease its ill-posedness. Two numerical methods have been compared for these anisotropic diffusion filtering methods: the Forward Time, Central Space method and the Additive Operator Splitting method. The advantage of the AOS method is the unconditional stability for al positive time step sizes, while FTCS implementation is only stable for time steps smaller than 0.25. The results for the AOS method were also slightly better than for the FTCS method and almost never lead to instability. The FTCS method showed instability more often. The parameter choice is of significant importance for the outcome. Several options for determining the gradient threshold parameter K, time step size and stopping time S have been investigated. A new estimation for the time step size and stopping time S have been proposed and compared. The results are images with good visual quality for both introduced methods. Also, an adaptive time step has been tested to overcome the instability for unstable methods and this seems to be succesful. Lastly, region growing segmentation has been applied to images obtained with the proposed stopping time S. Segmentation is an additional way to investigate the quality of these outcomes. For most test problems the partitioning resembles the partitioning of the original image. However, choosing certain parameters stays a challenge and can be of interest for further examination. It also remains a goal to investigate the discussed methods on data obtained with the actual TUD/LUMC MRI scanner. Advisors/Committee Members: van Gijzen, Martin (mentor), Vuik, Kees (graduation committee), Remis, Rob (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: anisotropic; diffusion; filtering; Imaging

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APA (6^th Edition):

van Marlen, P. (. (2018). Linear and anisotropic diffusion in image processing: A study on implementation, parameters and segmentation. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:05d331d1-72ef-4c65-9c92-2a5c132ad7eb

Chicago Manual of Style (16^th Edition):

van Marlen, Patricia (author). “Linear and anisotropic diffusion in image processing: A study on implementation, parameters and segmentation.” 2018. Masters Thesis, Delft University of Technology. Accessed January 26, 2021. http://resolver.tudelft.nl/uuid:05d331d1-72ef-4c65-9c92-2a5c132ad7eb.

MLA Handbook (7^th Edition):

van Marlen, Patricia (author). “Linear and anisotropic diffusion in image processing: A study on implementation, parameters and segmentation.” 2018. Web. 26 Jan 2021.

Vancouver:

van Marlen P(. Linear and anisotropic diffusion in image processing: A study on implementation, parameters and segmentation. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 26]. Available from: http://resolver.tudelft.nl/uuid:05d331d1-72ef-4c65-9c92-2a5c132ad7eb.

Council of Science Editors:

van Marlen P(. Linear and anisotropic diffusion in image processing: A study on implementation, parameters and segmentation. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:05d331d1-72ef-4c65-9c92-2a5c132ad7eb

University of Minnesota

12. Sizyuk, Yuriy. 4d and 5d compounds as the new frontier of the anisotropic spin physics.

Degree: PhD, Physics, 2017, University of Minnesota

URL: http://hdl.handle.net/11299/190496

► I perform a series of studies of the magnetism of 4d and 5d transition metal compounds. In particular I concentrate on the realization of anisotropic… (more)

Subjects/Keywords: anisotropic; Kitaev; magnetism; spin; superexchange

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

APA (6^th Edition):

Sizyuk, Y. (2017). 4d and 5d compounds as the new frontier of the anisotropic spin physics. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/190496

Chicago Manual of Style (16^th Edition):

Sizyuk, Yuriy. “4d and 5d compounds as the new frontier of the anisotropic spin physics.” 2017. Doctoral Dissertation, University of Minnesota. Accessed January 26, 2021. http://hdl.handle.net/11299/190496.

MLA Handbook (7^th Edition):

Sizyuk, Yuriy. “4d and 5d compounds as the new frontier of the anisotropic spin physics.” 2017. Web. 26 Jan 2021.

Vancouver:

Sizyuk Y. 4d and 5d compounds as the new frontier of the anisotropic spin physics. [Internet] [Doctoral dissertation]. University of Minnesota; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11299/190496.

Council of Science Editors:

Sizyuk Y. 4d and 5d compounds as the new frontier of the anisotropic spin physics. [Doctoral Dissertation]. University of Minnesota; 2017. Available from: http://hdl.handle.net/11299/190496

University of Saskatchewan

13. Simon, Sajna. On the role of 4-methoxypyridine in the electrochemical formation of plasmonic gold nanoparticles.

Degree: 2020, University of Saskatchewan

URL: http://hdl.handle.net/10388/13120

► This thesis details an electrochemical approach to generate homogenous and densely populated films of anisotropic gold nanoparticles. The electrochemistry of coinage metals in the presence… (more)

Subjects/Keywords: Anisotropic gold nanoparticles; Electrochemistry

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

APA (6^th Edition):

Simon, S. (2020). On the role of 4-methoxypyridine in the electrochemical formation of plasmonic gold nanoparticles. (Thesis). University of Saskatchewan. Retrieved from http://hdl.handle.net/10388/13120

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):

Simon, Sajna. “On the role of 4-methoxypyridine in the electrochemical formation of plasmonic gold nanoparticles.” 2020. Thesis, University of Saskatchewan. Accessed January 26, 2021. http://hdl.handle.net/10388/13120.

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

MLA Handbook (7^th Edition):

Simon, Sajna. “On the role of 4-methoxypyridine in the electrochemical formation of plasmonic gold nanoparticles.” 2020. Web. 26 Jan 2021.

Vancouver:

Simon S. On the role of 4-methoxypyridine in the electrochemical formation of plasmonic gold nanoparticles. [Internet] [Thesis]. University of Saskatchewan; 2020. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10388/13120.

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

Council of Science Editors:

Simon S. On the role of 4-methoxypyridine in the electrochemical formation of plasmonic gold nanoparticles. [Thesis]. University of Saskatchewan; 2020. Available from: http://hdl.handle.net/10388/13120

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

NSYSU

14. Lin, Chih-Hsin. A Method of Combination of Yee Grid and Lebedev Grid to Analysis Anisotropic Materials with FDTD Method.

Degree: Master, Communications Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0116116-115734

► When designers design products, they will avoid the distortion of signal as possible. However, they sometimes may make input signal propagate in unusual form. For… (more)

Subjects/Keywords: FDTD; Lebedev grid; anisotropic; Electromagnetic Interference

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

APA (6^th Edition):

Lin, C. (2016). A Method of Combination of Yee Grid and Lebedev Grid to Analysis Anisotropic Materials with FDTD Method. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0116116-115734

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):

Lin, Chih-Hsin. “A Method of Combination of Yee Grid and Lebedev Grid to Analysis Anisotropic Materials with FDTD Method.” 2016. Thesis, NSYSU. Accessed January 26, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0116116-115734.

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

MLA Handbook (7^th Edition):

Lin, Chih-Hsin. “A Method of Combination of Yee Grid and Lebedev Grid to Analysis Anisotropic Materials with FDTD Method.” 2016. Web. 26 Jan 2021.

Vancouver:

Lin C. A Method of Combination of Yee Grid and Lebedev Grid to Analysis Anisotropic Materials with FDTD Method. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Jan 26]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0116116-115734.

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

Council of Science Editors:

Lin C. A Method of Combination of Yee Grid and Lebedev Grid to Analysis Anisotropic Materials with FDTD Method. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0116116-115734

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

University of Pretoria

15. [No author]. Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts .

Degree: 2009, University of Pretoria

URL: http://upetd.up.ac.za/thesis/available/etd-02092009-125239/

► Refcoal is a carbon precursor obtained by alkali-mediated extraction of coal with aprotic solvents such as DMF. Refcoal can be converted into a graphitic material… (more)

▼ Refcoal is a carbon precursor obtained by alkali-mediated extraction of coal with aprotic solvents such as DMF. Refcoal can be converted into a graphitic material through appropriate heat treatment. Graphitisable materials require the development of an intermediate liquid crystalline mesophase. Thus formation of a mesophase during the carbonisation of Refcoal is essential for obtaining highly graphitisable anisotropic cokes suitable for nuclear graphite applications. Anisotropic carbons are even more important in other commercial and industrial application because of their distinctive properties. The formation of anisotropic carbon depends on the nature of the parent precursor, temperature and carbonisation conditions, especially the molecular mobility during the mesophase stage. High-temperature extraction of coal produces Refcoal that yield cokes with a low level of anisotropy. Good control of the mesophase stage during carbonisation may lead to the development of anisotropic cokes. Hydrogen donor additives increase the molecular mobility in the liquid phase by stabilising the free radicals formed by thermal decomposition of coal. Hydrogen donor additives also increase the temperature range over which fluidity occurs, thereby allowing the formation of large sized mosaic structures. Mittal pitches (CTP) and tetralin were examined for their effectiveness as hydrogen donor additives. Refcoal blends containing 10 to 50% by mass additive were prepared by mixing and carbonisation conducted at temperatures ranging form 400 to 1000 °C. Samples were analysed using thermogravimetric analysis (TGA), diffuse reflectance infrared Fourier transform (DRIFT), optical microscope techniques, scanning electron microscopy (SEM), Raman spectroscopy and X-ray diffraction (XRD). It was found that addition of at least 10% tetralin improves the optical texture of Refcoal cokes and also increases the carbon yield. In both tetralin and pitch addition, 20% additive gave coarse circular anisotropic cokes after carbonisation at 650°C. However the carbon yield was reduced for the Refcoal coke treated with Mittal pitch. In fact the yield roughly decreases with an increase in pitch content. Although the cokes from pitch treated Refcoals showed a low ratio of d/g (where d indicates the degree of disordering and g the degree of ordering), Raman and XRD results indicate little further improvement in crystallinity but SEM showed development of a smooth morphology with increasing pitch content. Previous literature results suggest that this indicates that the material must have passed through a mesophase stage. Surprisingly, the addition of tetralin yielded cokes with high ratio of d/g, but improved the carbon yield and optical anisotropy. Increasing tetralin content in the carbonising system increased the size of anisotropic textures but the SEM micrographs show rough morphology with compounds that appear to inhibit mesophase spheres coalescence. Advisors/Committee Members: Rand, Brian (advisor), Focke, Walter Wilhelm (advisor).

Subjects/Keywords: Anisotropic cokes; Hydrogen donor additive; Carbonisation; UCTD

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APA (6^th Edition):

author], [. (2009). Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts . (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-02092009-125239/

Chicago Manual of Style (16^th Edition):

author], [No. “Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts .” 2009. Masters Thesis, University of Pretoria. Accessed January 26, 2021. http://upetd.up.ac.za/thesis/available/etd-02092009-125239/.

MLA Handbook (7^th Edition):

author], [No. “Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts .” 2009. Web. 26 Jan 2021.

Vancouver:

author] [. Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts . [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2021 Jan 26]. Available from: http://upetd.up.ac.za/thesis/available/etd-02092009-125239/.

Council of Science Editors:

author] [. Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts . [Masters Thesis]. University of Pretoria; 2009. Available from: http://upetd.up.ac.za/thesis/available/etd-02092009-125239/

Mississippi State University

16. Zabet, Mahla. Structure-property relationships of polymer gels and concentrated suspensions modified with anisotropic nanoparticle.

Degree: PhD, Chemical Engineering, School of, 2018, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-01122018-122501/ ;

► Soft materials are ubiquitous in every aspect of our daily life. These materials composed of a wide range of subfields including surfactants, foams, emulsions,… (more)

▼ Soft materials are ubiquitous in every aspect of our daily life. These materials composed of a wide range of subfields including surfactants, foams, emulsions, pastes, slurries, polymers, gels, and colloidal suspensions. In recent years, there has been a great interest focusing on the understanding of the macroscopic properties of various types of soft materials as a function of their microstructures. For example, the structure-property relationship of physically-associating triblock copolymer gels can be controlled by selecting different types of solvents and changing the temperature. In these systems, gelation occurs due to the significant changes in the solubility of one or more of the blocks with temperature compared to the other blocks. Therefore, changing the temperature can lead to the structural transitions and macroscopic properties. The other strategy that can be used to modify the macroscopic performance of polymer gels is through the incorporation of nanoparticles, such as graphene nanoplatelets and nanotubes. The addition of nanoparticles can also affect the mechanical properties of concentrated suspensions in which, understanding the structure/flow properties is vital for processing and manufacturing of a product. Despite significant advances in the field of soft materials, our understanding in linking the structure-property relationships of polymer gels and concentrated suspensions is incomplete. With this perspective, in this dissertation, shear-rheometry and scattering techniques were used to understand the structural changes of the self-assembled triblock copolymer gels over a wide length-scale and broad temperature-range. Graphene nanoplatelets have been incorporated into this system to investigate the self-assembly behavior and mechanical properties as a function of graphene concentration. On the other hand, in concentrated suspensions of functionalized nanoparticles in a low-molecular- weight polymeric media, the effect of nanoparticles on the rheological properties were investigated. The present work provides a better understanding of the nanoparticlescontributions on microstructure and mechanical behavior of soft materials. Advisors/Committee Members: Keisha B. Walters (committee member), Neeraj Rai (committee member), Priscilla Hill (committee member).

Subjects/Keywords: gels; soft materials; rheology; Anisotropic nanoparticles

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APA (6^th Edition):

Zabet, M. (2018). Structure-property relationships of polymer gels and concentrated suspensions modified with anisotropic nanoparticle. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-01122018-122501/ ;

Chicago Manual of Style (16^th Edition):

Zabet, Mahla. “Structure-property relationships of polymer gels and concentrated suspensions modified with anisotropic nanoparticle.” 2018. Doctoral Dissertation, Mississippi State University. Accessed January 26, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-01122018-122501/ ;.

MLA Handbook (7^th Edition):

Zabet, Mahla. “Structure-property relationships of polymer gels and concentrated suspensions modified with anisotropic nanoparticle.” 2018. Web. 26 Jan 2021.

Vancouver:

Zabet M. Structure-property relationships of polymer gels and concentrated suspensions modified with anisotropic nanoparticle. [Internet] [Doctoral dissertation]. Mississippi State University; 2018. [cited 2021 Jan 26]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-01122018-122501/ ;.

Council of Science Editors:

Zabet M. Structure-property relationships of polymer gels and concentrated suspensions modified with anisotropic nanoparticle. [Doctoral Dissertation]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-01122018-122501/ ;

17. Mandal, Dinbandhu. Theoretical study of elastic wave propagation in layered anisotropic and inhomogeneous media; -.

Degree: Applied Mathematics, 2013, INFLIBNET

URL: http://shodhganga.inflibnet.ac.in/handle/10603/44774

None

References p.138 - 159

Advisors/Committee Members: Pal, P C.

Subjects/Keywords: Anisotropic; Inhomogeneous; Media

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

APA (6^th Edition):

Mandal, D. (2013). Theoretical study of elastic wave propagation in layered anisotropic and inhomogeneous media; -. (Thesis). INFLIBNET. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/44774

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):

Mandal, Dinbandhu. “Theoretical study of elastic wave propagation in layered anisotropic and inhomogeneous media; -.” 2013. Thesis, INFLIBNET. Accessed January 26, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/44774.

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

MLA Handbook (7^th Edition):

Mandal, Dinbandhu. “Theoretical study of elastic wave propagation in layered anisotropic and inhomogeneous media; -.” 2013. Web. 26 Jan 2021.

Vancouver:

Mandal D. Theoretical study of elastic wave propagation in layered anisotropic and inhomogeneous media; -. [Internet] [Thesis]. INFLIBNET; 2013. [cited 2021 Jan 26]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/44774.

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

Council of Science Editors:

Mandal D. Theoretical study of elastic wave propagation in layered anisotropic and inhomogeneous media; -. [Thesis]. INFLIBNET; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/44774

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

18. Silva, Felipe José Ferreira Sabino da. Estudos da corrosão anisotrópica do silício frente soluções de KOH e sais metálicos.

Degree: Mestrado, Microeletrônica, 2008, University of São Paulo

URL: http://www.teses.usp.br/teses/disponiveis/3/3140/tde-13052009-090110/ ;

►

Nos últimos anos tem se dado uma evolução muito grande na área industrial de MEMS, e esta se caracteriza por desenvolvimento dos processos de microeletrônica… (more)

▼

Nos últimos anos tem se dado uma evolução muito grande na área industrial de MEMS, e esta se caracteriza por desenvolvimento dos processos de microeletrônica para diminuição de custos e a própria integração de diferentes sistemas que passam a ser muito confiáveis em diferentes aplicações. Motivado pelas tendências de elevar os conhecimentos de processos para obtenção de MEMS, foi proposto um trabalho de corrosão anisotrópica de silício utilizando solução de hidróxido de potássio (KOH) junto com a adição de sais metálicos. O objetivo é comprovar o efeito de compensação cinética da reação e a influência destes metais no caráter anisotrópico e nas taxas de corrosão. Foi analisado o efeito de zinco, alumínio e cobre, e puderam ser observadas alterações nas taxas de corrosão e, conseqüentemente, nas geometrias resultantes no corpo de silício. Com a caracterização dessas mudanças comprovou-se suposições anteriores de que o efeito de compensação cinética encontrado na síntese direta de dimetilclorosilana (DMDCS) e silício, também ocorreria para a corrosão de silício em KOH, pois esses processos obedecem a lei de Arrhenius e tem um comportamento anisotrópico em silício. Os resultados obtidos, graças a um grande detalhamento de todos as etapas de processo e caracterização voltada à tecnologia do silício, comprovaram as suposições teóricas e mostraram como pode ser modificada a taxa de corrosão na anisotropia com a adição de metais em solução.

In the past few years it has been a huge evolution in industrial area of MEMS, and this one is characterized by the development of the processes of microelectronic to reduce cost and to integrate different systems that become very trustful in different applications. It is being done a work in silicon anisotropic etching in Potassium hydroxide (KOH) added with metallic impurities aiming the study of the kinetic compensation effect and the influence of these metals in the anisotropy and in etch rates. It was analyzed the effects of Zinc, Aluminum and Cupper and it could be observed changes in etch rates, and, consequently, in the resulting geometries. After characterization of theses changes it was proved that previous suppositions that the kinetic compensation effects found in direct synthesis of dimethyldichorosilane (DMDCS) and silicon would also occur for silicon anisotropic etching in KOH, due to both reactions follows Arrhenius law and are anisotropic reactions. The obtained results proved the theory suppositions that the etch rate and anisotropy can be modified when adding metals to the solution.

Advisors/Committee Members: Furlan, Humber.

Subjects/Keywords: Anisotropic; Isokinetic; KOH; Processos de microeletrônica; Silicon

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

APA (6^th Edition):

Silva, F. J. F. S. d. (2008). Estudos da corrosão anisotrópica do silício frente soluções de KOH e sais metálicos. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/3/3140/tde-13052009-090110/ ;

Chicago Manual of Style (16^th Edition):

Silva, Felipe José Ferreira Sabino da. “Estudos da corrosão anisotrópica do silício frente soluções de KOH e sais metálicos.” 2008. Masters Thesis, University of São Paulo. Accessed January 26, 2021. http://www.teses.usp.br/teses/disponiveis/3/3140/tde-13052009-090110/ ;.

MLA Handbook (7^th Edition):

Silva, Felipe José Ferreira Sabino da. “Estudos da corrosão anisotrópica do silício frente soluções de KOH e sais metálicos.” 2008. Web. 26 Jan 2021.

Vancouver:

Silva FJFSd. Estudos da corrosão anisotrópica do silício frente soluções de KOH e sais metálicos. [Internet] [Masters thesis]. University of São Paulo; 2008. [cited 2021 Jan 26]. Available from: http://www.teses.usp.br/teses/disponiveis/3/3140/tde-13052009-090110/ ;.

Council of Science Editors:

Silva FJFSd. Estudos da corrosão anisotrópica do silício frente soluções de KOH e sais metálicos. [Masters Thesis]. University of São Paulo; 2008. Available from: http://www.teses.usp.br/teses/disponiveis/3/3140/tde-13052009-090110/ ;

University of Pretoria

19. Makgato, M.H. (Matlou Hector). Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts.

Degree: Chemistry, 2009, University of Pretoria

URL: http://hdl.handle.net/2263/27718

► Refcoal is a carbon precursor obtained by alkali-mediated extraction of coal with aprotic solvents such as DMF. Refcoal can be converted into a graphitic material… (more)

▼ Refcoal is a carbon precursor obtained by alkali-mediated extraction of coal with aprotic solvents such as DMF. Refcoal can be converted into a graphitic material through appropriate heat treatment. Graphitisable materials require the development of an intermediate liquid crystalline mesophase. Thus formation of a mesophase during the carbonisation of Refcoal is essential for obtaining highly graphitisable anisotropic cokes suitable for nuclear graphite applications. Anisotropic carbons are even more important in other commercial and industrial application because of their distinctive properties. The formation of anisotropic carbon depends on the nature of the parent precursor, temperature and carbonisation conditions, especially the molecular mobility during the mesophase stage. High-temperature extraction of coal produces Refcoal that yield cokes with a low level of anisotropy. Good control of the mesophase stage during carbonisation may lead to the development of anisotropic cokes. Hydrogen donor additives increase the molecular mobility in the liquid phase by stabilising the free radicals formed by thermal decomposition of coal. Hydrogen donor additives also increase the temperature range over which fluidity occurs, thereby allowing the formation of large sized mosaic structures. Mittal pitches (CTP) and tetralin were examined for their effectiveness as hydrogen donor additives. Refcoal blends containing 10 to 50% by mass additive were prepared by mixing and carbonisation conducted at temperatures ranging form 400 to 1000 °C. Samples were analysed using thermogravimetric analysis (TGA), diffuse reflectance infrared Fourier transform (DRIFT), optical microscope techniques, scanning electron microscopy (SEM), Raman spectroscopy and X-ray diffraction (XRD). It was found that addition of at least 10% tetralin improves the optical texture of Refcoal cokes and also increases the carbon yield. In both tetralin and pitch addition, 20% additive gave coarse circular anisotropic cokes after carbonisation at 650°C. However the carbon yield was reduced for the Refcoal coke treated with Mittal pitch. In fact the yield roughly decreases with an increase in pitch content. Although the cokes from pitch treated Refcoals showed a low ratio of d/g (where d indicates the degree of disordering and g the degree of ordering), Raman and XRD results indicate little further improvement in crystallinity but SEM showed development of a smooth morphology with increasing pitch content. Previous literature results suggest that this indicates that the material must have passed through a mesophase stage. Surprisingly, the addition of tetralin yielded cokes with high ratio of d/g, but improved the carbon yield and optical anisotropy. Increasing tetralin content in the carbonising system increased the size of anisotropic textures but the SEM micrographs show rough morphology with compounds that appear to inhibit mesophase spheres coalescence. Advisors/Committee Members: Rand, Brian (advisor), Focke, Walter Wilhelm (coadvisor).

Subjects/Keywords: Anisotropic cokes; Hydrogen donor additive; Carbonisation; UCTD

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APA (6^th Edition):

Makgato, M. H. (. (2009). Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/27718

Chicago Manual of Style (16^th Edition):

Makgato, M H (Matlou. “Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts.” 2009. Masters Thesis, University of Pretoria. Accessed January 26, 2021. http://hdl.handle.net/2263/27718.

MLA Handbook (7^th Edition):

Makgato, M H (Matlou. “Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts.” 2009. Web. 26 Jan 2021.

Vancouver:

Makgato MH(. Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts. [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2263/27718.

Council of Science Editors:

Makgato MH(. Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts. [Masters Thesis]. University of Pretoria; 2009. Available from: http://hdl.handle.net/2263/27718

University of Manchester

20. Butterworth, Sean. Shape and Chemical Anisotropic Particles in Low Dielectric Constant Media.

Degree: 2013, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:197710

► Electrophoretic displays (EDPs) are an attractive low power technology for small to large area displays. Such display technology has seen a surge of research interest… (more)

▼ Electrophoretic displays (EDPs) are an attractive low power technology for small to large area displays. Such display technology has seen a surge of research interest with the launch of successful e-readers in the market place, owing to their lower power consumption and paper-like quality. This work aims to look at the influence of shape on the electrophoretic mobility of particles for such devices. Crosslinked poly(methyl methacrylate) (PMMA) precursor particles with a narrow size distribution were produced by non aqueous dispersion polymerisation utilising a pump-feed method. To produce shape anisotropic particles an adapted version of the dynamic swelling method for polar media was chosen. Suitable monomers were screened by the use of Hansen solubility theory to find monomers which interact with PMMA but not the solvent. It was found that 2- hydroxyethyl methacrylate (HEMA) and N-hydroxyethyl acrylamide (HEAm) were two such suitable monomers, methyl methacrylate (MMA) was also used as a control series.It was found that cluster-like particle morphologies could be produced by the MMA system by the inclusion of small quantities of crosslinking monomer. This was due to precipitation of higher molecular weight polymer segments to the seed particle surface. The cluster-like morphology could be enhanced by use of a polar crosslinking monomer and by sequential reactions. For the polar system, it was found that the reactions with pure monomer were unclean, due to the solubility mismatch of the monomer and the solvent system. This was overcome by a copolymerisation with MMA. The system showed different particle morphologies could be produced by varying the polar monomer content. In one case a sample of pure dumbbell-like particles could be produced. These dumbbell-like particles are thought to be chemical as well as shape anisotropic owing to monomer composition. EPD evaluation for the particles was undertaken and showed that all particles can become highly charged in low dielectric constant media, but that the shape anisotropic particles are prone to adsorption to the cell walls and electrodes.The work outlined in this thesis shows the first reporting of shape anisotropic polymeric particles produced in low dielectric constant solvents system. Advisors/Committee Members: Yeates, Stephen.

Subjects/Keywords: Dispersion Polymerisation; Anisotropic Particles; non aqueous charging

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APA (6^th Edition):

Butterworth, S. (2013). Shape and Chemical Anisotropic Particles in Low Dielectric Constant Media. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:197710

Chicago Manual of Style (16^th Edition):

Butterworth, Sean. “Shape and Chemical Anisotropic Particles in Low Dielectric Constant Media.” 2013. Doctoral Dissertation, University of Manchester. Accessed January 26, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:197710.

MLA Handbook (7^th Edition):

Butterworth, Sean. “Shape and Chemical Anisotropic Particles in Low Dielectric Constant Media.” 2013. Web. 26 Jan 2021.

Vancouver:

Butterworth S. Shape and Chemical Anisotropic Particles in Low Dielectric Constant Media. [Internet] [Doctoral dissertation]. University of Manchester; 2013. [cited 2021 Jan 26]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:197710.

Council of Science Editors:

Butterworth S. Shape and Chemical Anisotropic Particles in Low Dielectric Constant Media. [Doctoral Dissertation]. University of Manchester; 2013. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:197710

21. Li, Yali. Modeling Active Anisotropic Materials Undergoing Finite Deformations.

Degree: PhD, Aerospace Engineering, 2017, University of Michigan

URL: http://hdl.handle.net/2027.42/138722

► Biological and synthetic active materials have attracted a large amount of research attention over the last decade. This thesis is focuses on the development of… (more)

▼ Biological and synthetic active materials have attracted a large amount of research attention over the last decade. This thesis is focuses on the development of constitutive models and computational frameworks for describing the behavior of active anisotropic materials. Active anisotropic materials are defined as consisting of an isotropic matrix embedded with fibers or oriented particles that are active. In this dissertation, new constitutive formulations for active anisotropic materials undergoing finite deformations are proposed and analyzed within a generalized continuum mechanics framework. The constitutive equations have been developed for two material classes: i) natural biological muscle tissue and ii) synthetic electroactive polymers. The proposed constitutive models are successfully implemented into a finite element environment to study a range of initial boundary value problems. In the first material class, a structure-based continuum model is proposed to capture the viscoelastic behavior due to smooth muscle tissue contractility. We employed a thick-walled model for healthy and diseased arteries to investigate the effect of active viscoelasticity on the mechanical response of the artery wall. The work focuses on the artery being overstretched on long time scales (around 1 minute), for example, during surgical events such as balloon angioplasty and stent implantation. Model results show an over fourfold increase in circumferential stresses and twofold increase in radial stresses when active viscoelasticity is considered. This suggests that active viscoelasticity has a non-negligible effect on the artery wall stresses when longer timescales are considered. In the second material class, a novel dielectric elastomer composite consisting of an isotropic matrix and embedded contractile fibers is proposed. Two activation modes are realized: through thickness actuation of the matrix and fiber actuation in the plane. A constitutive model is proposed to model the active anisotropic material behavior. A new user subroutine was developed for the proposed constitutive model and implemented into the commercial finite element software ABAQUS. A series of computational simulations to highlight novel deformation modes of the proposed dielectric elastomer composite are presented. The proposed composite significantly extends the actuation performance space for dielectric elastomers. Several new spatial architectures are proposed and the simulations demonstrate coordinated surface morphing through spatial activation and as a function of fiber orientation. Finally, we calculate the actuation response for complex 3D geometries, which opens the design space even further. The developed computational framework is demonstrated to be a very convenient and efficient numerical tool to study complex materials. Advisors/Committee Members: Goulbourne, Nakhiah C (committee member), Wineman, Alan S (committee member), Shaw, John A (committee member), Sundararaghavan, Veera (committee member).

Subjects/Keywords: active anisotropic material modeling; Aerospace Engineering; Engineering

11 more images…

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APA (6^th Edition):

Li, Y. (2017). Modeling Active Anisotropic Materials Undergoing Finite Deformations. (Doctoral Dissertation). University of Michigan. Retrieved from http://hdl.handle.net/2027.42/138722

Chicago Manual of Style (16^th Edition):

Li, Yali. “Modeling Active Anisotropic Materials Undergoing Finite Deformations.” 2017. Doctoral Dissertation, University of Michigan. Accessed January 26, 2021. http://hdl.handle.net/2027.42/138722.

MLA Handbook (7^th Edition):

Li, Yali. “Modeling Active Anisotropic Materials Undergoing Finite Deformations.” 2017. Web. 26 Jan 2021.

Vancouver:

Li Y. Modeling Active Anisotropic Materials Undergoing Finite Deformations. [Internet] [Doctoral dissertation]. University of Michigan; 2017. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/2027.42/138722.

Council of Science Editors:

Li Y. Modeling Active Anisotropic Materials Undergoing Finite Deformations. [Doctoral Dissertation]. University of Michigan; 2017. Available from: http://hdl.handle.net/2027.42/138722

22. Chakraborty, Somdeb. Probing strongly coupled anisotropic quark gluon plasma via holography; -.

Degree: Physical Science, 2014, INFLIBNET

URL: http://shodhganga.inflibnet.ac.in/handle/10603/49136

None

Appendix p.184 - 189 and bibliography p.190 - 132

Advisors/Committee Members: Roy, Shibaji.

Subjects/Keywords: Anisotropic; Plasma; Strongly

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APA (6^th Edition):

Chakraborty, S. (2014). Probing strongly coupled anisotropic quark gluon plasma via holography; -. (Thesis). INFLIBNET. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/49136

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):

Chakraborty, Somdeb. “Probing strongly coupled anisotropic quark gluon plasma via holography; -.” 2014. Thesis, INFLIBNET. Accessed January 26, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/49136.

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

MLA Handbook (7^th Edition):

Chakraborty, Somdeb. “Probing strongly coupled anisotropic quark gluon plasma via holography; -.” 2014. Web. 26 Jan 2021.

Vancouver:

Chakraborty S. Probing strongly coupled anisotropic quark gluon plasma via holography; -. [Internet] [Thesis]. INFLIBNET; 2014. [cited 2021 Jan 26]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/49136.

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

Council of Science Editors:

Chakraborty S. Probing strongly coupled anisotropic quark gluon plasma via holography; -. [Thesis]. INFLIBNET; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/49136

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

Texas A&M University

23. Mejia Mejia, Andres Fernando Fernando. Discotic Colloids.

Degree: PhD, Chemical Engineering, 2013, Texas A&M University

URL: http://hdl.handle.net/1969.1/151142

► Many materials and biological systems in nature are suspensions composed of disks, such as clay, asphaltenes, and red blood cells. Despite their natural abundance and… (more)

▼ Many materials and biological systems in nature are suspensions composed of disks, such as clay, asphaltenes, and red blood cells. Despite their natural abundance and wide industrial application, disks are least studied compared to spheres and rods, due to the lack of model systems. In our research, disks at micro-scale were mass-produced with unprecedented uniformity in size and shape, and unique flexibility in the control of lateral size, lateral size polydispersity, shape, and aspect ratio (ξ = diameter/thickness). This dissertation focuses on two main areas: the study of the discotic colloidal liquid crystal phase transitions and the application of disk-like colloidal systems as Pickering emulsion and Pickering foam stabilizers. First, we engineered two discotic colloidal systems made from organic and inorganic materials. The former is made of α-eicosene, which is an alkene of 20 carbons. The latter is composed of nano-sheets from exfoliated zirconium phosphate (α-ZrP). Both discotic systems were used to experimentally investigate the liquid crystalline phase transitions (Isotropic-Nematic, Isotropic-Cubic and Isotropic-Columnar). Also, the nematic crystalline phase was studied in detail by embedding it in a translucent and thermo-sensitive hydrogel. This was possible since nematic textures could be formed instantly by ZrP nano-sheets due to their high diameter-thickness ratio. Second, we developed Pickering emulsions and Pickering foams stabilized by high-aspect-ratio nano-sheets. We have also demonstrated for the first time the fabrication of the thinnest amphiphilic Janus and Gemini nano-sheets, which are either surface- or edge-modified plates with a thickness at atomic scale. These nano-sheets were obtained by exfoliating α-ZrP crystals grafted with a coupling agent of hydrophobic molecules on their edges and outer surfaces. Extending this work, we studied crucial fundamental mechanisms that allow Pickering interfacial stabilization, including the effect on the adsorption properties of particle aspect ratio, concentration, and hydrophobicity. Our study is of great interest in the scientific community due to the difficulty in generating a discotic colloidal system of controllable parameters. Advisors/Committee Members: Cheng, Zhengdong (advisor), Mannan, Sam (advisor), Ugaz, Victor (committee member), Clearfield, Abraham (committee member).

Subjects/Keywords: Anisotropic particles; Liquid crystals; Pickering stabilization

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APA (6^th Edition):

Mejia Mejia, A. F. F. (2013). Discotic Colloids. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/151142

Chicago Manual of Style (16^th Edition):

Mejia Mejia, Andres Fernando Fernando. “Discotic Colloids.” 2013. Doctoral Dissertation, Texas A&M University. Accessed January 26, 2021. http://hdl.handle.net/1969.1/151142.

MLA Handbook (7^th Edition):

Mejia Mejia, Andres Fernando Fernando. “Discotic Colloids.” 2013. Web. 26 Jan 2021.

Vancouver:

Mejia Mejia AFF. Discotic Colloids. [Internet] [Doctoral dissertation]. Texas A&M University; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/1969.1/151142.

Council of Science Editors:

Mejia Mejia AFF. Discotic Colloids. [Doctoral Dissertation]. Texas A&M University; 2013. Available from: http://hdl.handle.net/1969.1/151142

24. Carlioz, Thomas. Nucléation et propagation de fissures en conditions anisotropes : Cracks propagation and onset in anisotropic conditions.

Degree: Docteur es, Mécanique, 2017, Université Paris-Est

URL: http://www.theses.fr/2017PESC1247

►

En partant d'une problématique industrielle correspondant à la naissance de fissures lors de l'excavation d'un tunnel dans un matériau argileux, nous proposons de nous intéresser… (more)

▼

En partant d'une problématique industrielle correspondant à la naissance de fissures lors de l'excavation d'un tunnel dans un matériau argileux, nous proposons de nous intéresser à un sujet plus large qui est celui de la nucléation d'une fissure de dimension macroscopique. Ainsi, des résultats généraux et théoriques sont établis tout au long de ce mémoire. Ces derniers sont toutefois utilisés pour proposer une interprétation aux faciès de fissuration observés lors de l'excavation de galeries de stockage à grandeur profondeur. Dans un premier temps, un modèle géométrique idéalisé pour des fissures est justifié. Cette étude préalable permet à la fois d'acter la nature fermée des fissures susceptibles de nucléer ainsi que d'utiliser le critère mixte en statuant sur le bienfondé d'une étude bidimensionnelle équivalente. En précisant la notion de longueur de nucléation stable et en s'inspirant des outils classiques de la mécanique linéaire de la rupture, nous établissons dans un second temps notre propre critère de nucléation. Pour ce faire, nous proposons, grâce à des modélisations micromécaniques, de revisiter l'approche thermodynamique usuelle dans un cadre adiabatique afin d'être davantage en accord avec la brutalité du phénomène étudié. Par la suite, nous mettons aux points différentes méthodes permettant d'utiliser le critère suggéré. Enfin, le critère est mis en œuvre dans le cadre de la problématique industrielle initiale pour essayer de donner une justification à l'anisotropie des géométries des fissures observées, et ce, en prenant en compte les différentes directions de forage de l'ouvrage. Dans un deuxième temps, nous proposons de nous intéresser, de manière plus prospective, aux problématiques liées aux modèles locaux d'endommagement. Une attention particulière est accordée à la notion de stabilité des états d'équilibre. Ainsi, une adaptation du critère de Hill est proposée et des différences quantitatives sont soulignées lorsqu'un cadre adiabatique, nous paraissant plus justifié, est pris en compte. Enfin, le problème de la localisation de l'endommagement dans un problème unidimensionnel est abordé

Starting from an industrial issue that is cracks onset when excavating a tunnel, this work aims at giving new insights into a more general problematic which is the initiation of macroscopic cracks. Thus, general and theoretical results are established. Nevertheless, they are applied in order to give some explanations to the excavation-induced fractures observed around the deep geological repository. To begin with, an idealised geometrical model is detailed and justified. Thanks to this preliminary work, we establish that the cracks that should be taken into account are closed ones. In addition we show that it's possible for small cracks length to work on an equivalent bidimensionnal problem. This last result allows us to apply the mixed criteria. After giving the definition of a stable crack initiation length we define our own criteria to predict cracks onset. In order to do so and in order to be more in…

Advisors/Committee Members: Dormieux, Luc (thesis director).

Subjects/Keywords: Microfissuration; Fissuration; Nucléation; Microcracking; Anisotropic; Nucleation

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APA (6^th Edition):

Carlioz, T. (2017). Nucléation et propagation de fissures en conditions anisotropes : Cracks propagation and onset in anisotropic conditions. (Doctoral Dissertation). Université Paris-Est. Retrieved from http://www.theses.fr/2017PESC1247

Chicago Manual of Style (16^th Edition):

Carlioz, Thomas. “Nucléation et propagation de fissures en conditions anisotropes : Cracks propagation and onset in anisotropic conditions.” 2017. Doctoral Dissertation, Université Paris-Est. Accessed January 26, 2021. http://www.theses.fr/2017PESC1247.

MLA Handbook (7^th Edition):

Carlioz, Thomas. “Nucléation et propagation de fissures en conditions anisotropes : Cracks propagation and onset in anisotropic conditions.” 2017. Web. 26 Jan 2021.

Vancouver:

Carlioz T. Nucléation et propagation de fissures en conditions anisotropes : Cracks propagation and onset in anisotropic conditions. [Internet] [Doctoral dissertation]. Université Paris-Est; 2017. [cited 2021 Jan 26]. Available from: http://www.theses.fr/2017PESC1247.

Council of Science Editors:

Carlioz T. Nucléation et propagation de fissures en conditions anisotropes : Cracks propagation and onset in anisotropic conditions. [Doctoral Dissertation]. Université Paris-Est; 2017. Available from: http://www.theses.fr/2017PESC1247

NSYSU

25. Lin, Tzu-hui. Effect of surface passivation on carrier lifetime of textured crystalline silicon wafers.

Degree: Master, Electro-Optical Engineering, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0519117-121626

► The purpose of this study is to investigate the surface carrier lifetime of a texturized n-type (100) Si wafer after surface passivation. The surface texturization… (more)

Subjects/Keywords: Surface passivation; Carrier lifetime; Anisotropic; Supercritical CO2

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APA (6^th Edition):

Lin, T. (2017). Effect of surface passivation on carrier lifetime of textured crystalline silicon wafers. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0519117-121626

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):

Lin, Tzu-hui. “Effect of surface passivation on carrier lifetime of textured crystalline silicon wafers.” 2017. Thesis, NSYSU. Accessed January 26, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0519117-121626.

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

MLA Handbook (7^th Edition):

Lin, Tzu-hui. “Effect of surface passivation on carrier lifetime of textured crystalline silicon wafers.” 2017. Web. 26 Jan 2021.

Vancouver:

Lin T. Effect of surface passivation on carrier lifetime of textured crystalline silicon wafers. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Jan 26]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0519117-121626.

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

Council of Science Editors:

Lin T. Effect of surface passivation on carrier lifetime of textured crystalline silicon wafers. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0519117-121626

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

Colorado State University

26. Maple, Jennifer. Steady state Hopf mode interaction in anisotropic systems.

Degree: PhD, Mathematics, 2013, Colorado State University

URL: http://hdl.handle.net/10217/80162

► A paradigm example of pattern formation in anisotropic extended systems is the electroconvection of nematic liquid crystals, due to its easily accessible control parameters and… (more)

▼ A paradigm example of pattern formation in anisotropic extended systems is the electroconvection of nematic liquid crystals, due to its easily accessible control parameters and the variety of patterns near onset. Some of the patterns observed are oblique and normal rolls which can be stationary or traveling, and more complex structures such as worms, defects and spatiotemporal complexity, including spatiotemporal intermittency and chaos, can occur, see e.g., Dennin et al, Science 272, 1996. During electroconvection experiments on the nematic liquid crystal mixture Phase V, a mode interaction between oblique stationary rolls and normal traveling rolls has been observed by Acharya et al, Int. J. Mol. Sci. 12, 448, 2011; a system of four globally coupled Ginzburg Landau equations for slowly varying spatiotemporal amplitudes of ideal roll patterns governing the dynamics of anisotropic systems close to the experimentally observed codimension-two point has been set up, two equations for the steady oblique rolls and two for the normal traveling rolls. This dissertation pursues a theoretical and numerical study of the patterns predicted by this system of globally coupled Ginzburg Landau equations. Acharya et al presented a bifurcation analysis of the normal form that follows from the Ginzburg Landau system by ignoring slow variations. The basic solutions of the normal form are two types of pure mode solutions corresponding to ideal oblique stationary and normal traveling rolls, respectively, and superpositions of pure mode solutions, which are referred to as mixed mode solutions. Acharya et al distinguished two cases for the bifurcations of these solutions. In one case the mixed mode solution is stable and a continuous transition between the steady oblique rolls and the normal traveling rolls is predicted. For the other case, the mixed mode solution is unstable and bistability occurs between the steady oblique rolls and the normal traveling rolls. In the present work, a numerical code was developed to simulate the spatiotemporal system of globally-coupled, complex Ginzburg-Landau equations using a pseudo-spectral method. The simulations of the system resulted in patterns that were consistent with the normal form analysis. Steady oblique and normal traveling rolls were found numerically. A region of bistability of the steady oblique rolls and normal traveling rolls was found numerically, and a continuous transformation between the two primary branches via a stable mixed mode branch has been observed when the main bifurcation parameter is varied. Mixed mode solutions have been found that involved either amplitudes of steady rolls aligned in two different ("zig" and "zag") directions, or amplitudes of two counter-propagating normal traveling rolls, for parameter values near the primary instabilities and when the initial conditions favored their appearance, and a bifurcation diagram showing the occurrence of steady state, steady oblique rolls, normal traveling rolls, mixed mode solutions, as well as bistability of the steady… Advisors/Committee Members: Oprea, Iuliana (advisor), Dangelmayr, Gerhard (advisor), Shipman, Patrick (committee member), Fassnacht, Steven (committee member).

Subjects/Keywords: anisotropic systems; pseudo spectral method; mode interaction

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APA (6^th Edition):

Maple, J. (2013). Steady state Hopf mode interaction in anisotropic systems. (Doctoral Dissertation). Colorado State University. Retrieved from http://hdl.handle.net/10217/80162

Chicago Manual of Style (16^th Edition):

Maple, Jennifer. “Steady state Hopf mode interaction in anisotropic systems.” 2013. Doctoral Dissertation, Colorado State University. Accessed January 26, 2021. http://hdl.handle.net/10217/80162.

MLA Handbook (7^th Edition):

Maple, Jennifer. “Steady state Hopf mode interaction in anisotropic systems.” 2013. Web. 26 Jan 2021.

Vancouver:

Maple J. Steady state Hopf mode interaction in anisotropic systems. [Internet] [Doctoral dissertation]. Colorado State University; 2013. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10217/80162.

Council of Science Editors:

Maple J. Steady state Hopf mode interaction in anisotropic systems. [Doctoral Dissertation]. Colorado State University; 2013. Available from: http://hdl.handle.net/10217/80162

Universitat Rovira i Virgili

27. Cos Córcoles, Joaquín. Design and modelling of photonic crystals with anisotropic components.

Degree: Departament d'Enginyeria Electrònica, Elèctrica i Automàtica, 2010, Universitat Rovira i Virgili

URL: http://hdl.handle.net/10803/8479

► The present Communications Age requires more and more efficient devices in terms of speed, consumption and size for the treatment of information. Nanoscale photonic crystal… (more)

Subjects/Keywords: Modeling; Anisotropic; Liquid Crystal; Photonic Crystal; 621.3

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APA (6^th Edition):

Cos Córcoles, J. (2010). Design and modelling of photonic crystals with anisotropic components. (Thesis). Universitat Rovira i Virgili. Retrieved from http://hdl.handle.net/10803/8479

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):

Cos Córcoles, Joaquín. “Design and modelling of photonic crystals with anisotropic components.” 2010. Thesis, Universitat Rovira i Virgili. Accessed January 26, 2021. http://hdl.handle.net/10803/8479.

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

MLA Handbook (7^th Edition):

Cos Córcoles, Joaquín. “Design and modelling of photonic crystals with anisotropic components.” 2010. Web. 26 Jan 2021.

Vancouver:

Cos Córcoles J. Design and modelling of photonic crystals with anisotropic components. [Internet] [Thesis]. Universitat Rovira i Virgili; 2010. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/10803/8479.

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

Council of Science Editors:

Cos Córcoles J. Design and modelling of photonic crystals with anisotropic components. [Thesis]. Universitat Rovira i Virgili; 2010. Available from: http://hdl.handle.net/10803/8479

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

University of Pennsylvania

28. Yao, Lu. Capillary Assembly of Anisotropic Particles.

Degree: 2014, University of Pennsylvania

URL: https://repository.upenn.edu/edissertations/1509

► My research is in the field of interfacial phenomena. Since all materials are bounded by surfaces or interfaces, the ability to manipulate or tune interfacial… (more)

Subjects/Keywords: Anisotropic; Assembly; Capillary; Colloid; Particle; Chemical Engineering

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APA (6^th Edition):

Yao, L. (2014). Capillary Assembly of Anisotropic Particles. (Thesis). University of Pennsylvania. Retrieved from https://repository.upenn.edu/edissertations/1509

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):

Yao, Lu. “Capillary Assembly of Anisotropic Particles.” 2014. Thesis, University of Pennsylvania. Accessed January 26, 2021. https://repository.upenn.edu/edissertations/1509.

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

MLA Handbook (7^th Edition):

Yao, Lu. “Capillary Assembly of Anisotropic Particles.” 2014. Web. 26 Jan 2021.

Vancouver:

Yao L. Capillary Assembly of Anisotropic Particles. [Internet] [Thesis]. University of Pennsylvania; 2014. [cited 2021 Jan 26]. Available from: https://repository.upenn.edu/edissertations/1509.

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

Council of Science Editors:

Yao L. Capillary Assembly of Anisotropic Particles. [Thesis]. University of Pennsylvania; 2014. Available from: https://repository.upenn.edu/edissertations/1509

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

University of Minnesota

29. Booth, Kevin. AC Susceptibility and Anisotropic Magnetoresistance: A Study of Thin Magnetic Films.

Degree: MS, Physics, 2019, University of Minnesota

URL: http://hdl.handle.net/11299/211715

► The differential ac magnetic susceptibility of thin magnetic films was determined using the anisotropic magnetoresistance (AMR) to measure the response of the magnetization to an… (more)

Subjects/Keywords: AC Susceptibility; Anisotropic Magnetoresistance; Magnetics; Thin Films

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

APA (6^th Edition):

Booth, K. (2019). AC Susceptibility and Anisotropic Magnetoresistance: A Study of Thin Magnetic Films. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/211715

Chicago Manual of Style (16^th Edition):

Booth, Kevin. “AC Susceptibility and Anisotropic Magnetoresistance: A Study of Thin Magnetic Films.” 2019. Masters Thesis, University of Minnesota. Accessed January 26, 2021. http://hdl.handle.net/11299/211715.

MLA Handbook (7^th Edition):

Booth, Kevin. “AC Susceptibility and Anisotropic Magnetoresistance: A Study of Thin Magnetic Films.” 2019. Web. 26 Jan 2021.

Vancouver:

Booth K. AC Susceptibility and Anisotropic Magnetoresistance: A Study of Thin Magnetic Films. [Internet] [Masters thesis]. University of Minnesota; 2019. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11299/211715.

Council of Science Editors:

Booth K. AC Susceptibility and Anisotropic Magnetoresistance: A Study of Thin Magnetic Films. [Masters Thesis]. University of Minnesota; 2019. Available from: http://hdl.handle.net/11299/211715

University of Minnesota

30. Ramaswamy, Harini. Fabrication and Testing of Z-Expandable Auxetic Textile Structures for Impact Protection.

Degree: MS, Design, 2015, University of Minnesota

URL: http://hdl.handle.net/11299/175493

► Auxetics are counter-intuitive smart materials that grow in dimensions, perpendicular to the applied force. These are often used for impact protective clothing applications. The manufacture… (more)

Subjects/Keywords: Anisotropic; Auxetics; Impact Protection; Z-Expandable

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

APA (6^th Edition):

Ramaswamy, H. (2015). Fabrication and Testing of Z-Expandable Auxetic Textile Structures for Impact Protection. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/175493

Chicago Manual of Style (16^th Edition):

Ramaswamy, Harini. “Fabrication and Testing of Z-Expandable Auxetic Textile Structures for Impact Protection.” 2015. Masters Thesis, University of Minnesota. Accessed January 26, 2021. http://hdl.handle.net/11299/175493.

MLA Handbook (7^th Edition):

Ramaswamy, Harini. “Fabrication and Testing of Z-Expandable Auxetic Textile Structures for Impact Protection.” 2015. Web. 26 Jan 2021.

Vancouver:

Ramaswamy H. Fabrication and Testing of Z-Expandable Auxetic Textile Structures for Impact Protection. [Internet] [Masters thesis]. University of Minnesota; 2015. [cited 2021 Jan 26]. Available from: http://hdl.handle.net/11299/175493.

Council of Science Editors:

Ramaswamy H. Fabrication and Testing of Z-Expandable Auxetic Textile Structures for Impact Protection. [Masters Thesis]. University of Minnesota; 2015. Available from: http://hdl.handle.net/11299/175493

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