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You searched for +publisher:"University of Florida" +contributor:("MOUDGIL,BRIJ MOHAN"). Showing records 1 – 3 of 3 total matches.

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University of Florida

1. Ma, Long. Repellent Systems in Lifshitz-Van Der Waals Model.

Degree: MS, Materials Science and Engineering, 2017, University of Florida

Dust repellent surfaces reduce the use of detergents or water and tend to have low adhesion to stains. To date, significant breakthroughs have been accomplished, such as the dust repellent electrostatic shield and the ion beam bombarded quartz or Teflon coating. However, the broad introduction to market has not been achieved due to poor long-term performance under environmental conditions and the mystery of the fundamental mechanism. Controlled nanoscale variations in dielectric properties are known to change adhesive forces. Therefore, Lifshitz theory is used in this work to calculate systems with minimized attractive forces or even repulsion. Such systems may have two advantages. First, they do not require additional electrical energy to provide dust repellency; and second, they may be even better performing than current systems. This thesis presents the fundamental calculation of the van der Waals force in the parallel plate model and the simplification of the formula by applying the optical constants of the materials. Additional discussion covers the reason of attraction-repulsion transition in the silica-alkanes-cellulose system on the variation in the separation distance and the adjustment of the dielectric response function. Furthermore, the derivation of the theoretically maximum repulsion in designed systems is addressed. In the end, the setups of repulsive systems to repel most common compounds found in Martian dust will be exhibited. ( en ) Advisors/Committee Members: SIGMUND,WOLFGANG MICHAEL (committee chair), MOUDGIL,BRIJ MOHAN (committee member).

Subjects/Keywords: dust-removal  – lifshitz  – model  – repulsion

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APA (6th Edition):

Ma, L. (2017). Repellent Systems in Lifshitz-Van Der Waals Model. (Masters Thesis). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0051146

Chicago Manual of Style (16th Edition):

Ma, Long. “Repellent Systems in Lifshitz-Van Der Waals Model.” 2017. Masters Thesis, University of Florida. Accessed August 25, 2019. http://ufdc.ufl.edu/UFE0051146.

MLA Handbook (7th Edition):

Ma, Long. “Repellent Systems in Lifshitz-Van Der Waals Model.” 2017. Web. 25 Aug 2019.

Vancouver:

Ma L. Repellent Systems in Lifshitz-Van Der Waals Model. [Internet] [Masters thesis]. University of Florida; 2017. [cited 2019 Aug 25]. Available from: http://ufdc.ufl.edu/UFE0051146.

Council of Science Editors:

Ma L. Repellent Systems in Lifshitz-Van Der Waals Model. [Masters Thesis]. University of Florida; 2017. Available from: http://ufdc.ufl.edu/UFE0051146


University of Florida

2. Xu, Jia. Controlling the Interfacial Structure Surrounding Single-Walled Carbon Nanotubes.

Degree: PhD, Materials Science and Engineering, 2016, University of Florida

The integration of single-walled carbon nanotubes (SWCNTs) into many functional devices and applications requires the large-scale separation and dispersion of SWCNTs with known properties. A significant obstacle to the widespread use of SWCNTs in many applications is the formation of nanotubes with different electrical properties in nearly all synthetic techniques. Altering the interface around SWCNTs has been instrumental to the significant advances made in dispersing, integrating, and separating SWCNTs. Advisors/Committee Members: MOUDGIL,BRIJ MOHAN (committee chair), BRENNAN,ANTHONY B (committee member), ANDREW,JENNIFER (committee member), VASENKOV,SERGEY (committee member).

Subjects/Keywords: Aerogels; Chemical equilibrium; Chemicals; Chirality; Micelles; Nanotubes; Polymers; Protons; Solvents; Surfactants; carbon  – cmc  – nanotubes  – nmr  – polybutylcyanoacrylate  – porphyrin  – sds  – separation  – surfactant

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APA (6th Edition):

Xu, J. (2016). Controlling the Interfacial Structure Surrounding Single-Walled Carbon Nanotubes. (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0049865

Chicago Manual of Style (16th Edition):

Xu, Jia. “Controlling the Interfacial Structure Surrounding Single-Walled Carbon Nanotubes.” 2016. Doctoral Dissertation, University of Florida. Accessed August 25, 2019. http://ufdc.ufl.edu/UFE0049865.

MLA Handbook (7th Edition):

Xu, Jia. “Controlling the Interfacial Structure Surrounding Single-Walled Carbon Nanotubes.” 2016. Web. 25 Aug 2019.

Vancouver:

Xu J. Controlling the Interfacial Structure Surrounding Single-Walled Carbon Nanotubes. [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2019 Aug 25]. Available from: http://ufdc.ufl.edu/UFE0049865.

Council of Science Editors:

Xu J. Controlling the Interfacial Structure Surrounding Single-Walled Carbon Nanotubes. [Doctoral Dissertation]. University of Florida; 2016. Available from: http://ufdc.ufl.edu/UFE0049865

3. Kellar, Michael D. Strategies for Next Generation Secondary Battery Technology.

Degree: PhD, Materials Science and Engineering, 2016, University of Florida

Lithium-ion batteries (LIBs) rose to prominence in the mid-1990s as the power source behind the portable technology revolution of the decade. Recently, interest has grown in the technology for powering the nascent electric vehicle industry. Where high-energy capability was paramount for portable electronics, high-power capability becomes more relevant for automotive applications. On the small length scale, a plethora of research exists addressing materials challenges for LIB technology, such as novel synthesis and processing techniques of active materials and electrolyte additives. On a much larger scale, research addresses battery architecture and control systems. However, there is a notable research gap in the area of electrode design. While ideally battery electrodes would evenly conduct current across their geometric surface, real electrodes do not function this way due to intrinsic series resistances. As a result, parts of the electrodes are underutilized, most notably at higher currents. Typically, industry adds series resistance to the portions of the electrode intrinsically more favorable to current, but this is tantamount to making the entire electrode perform as well as its worst performing region. This research presents a novel approach for directly improving the current flow to higher resistance regions of a battery electrode, by initially biasing the current away from an electrode region in the bulk electrolyte, and then biasing the current back to the region through the improved electrode design. Utilizing a second active material with a more positive reduction potential for lithium ions in underutilized regions of an electrode will bias current to those regions and can lead to electrodes with more uniform current distributions, resulting in greater capacity and potentially a decreased failure rate due to internal short circuits. A provisional patent application on this work has been filed, displaying its novelty. Because the research employs ubiquitous off-the-shelf materials, there is a minimal barrier for commercial benefit. The last part of the work focuses on lithium-air research, with acumen gained from lithium-ion research addressing issues in the next generation field. ( en ) Advisors/Committee Members: MOUDGIL,BRIJ MOHAN (committee chair), SIGMUND,WOLFGANG MICHAEL (committee member), SINGH,RAJIV K (committee member), ZIEGLER,KIRK JEREMY (committee member), WEST,JON KENNETH (committee member).

Subjects/Keywords: Carbon; Current distribution; Electric current; Electric potential; Electrodes; Electrolytes; Ionic liquids; Ions; Lithium; Separators; batteries  – blended-electrode  – cathode  – composite-electrode  – current-distribution  – lithium-air  – lithium-ion  – mixed-electrode

…Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of… 

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

APA (6th Edition):

Kellar, M. D. (2016). Strategies for Next Generation Secondary Battery Technology. (Doctoral Dissertation). University of Florida. Retrieved from http://ufdc.ufl.edu/UFE0049809

Chicago Manual of Style (16th Edition):

Kellar, Michael D. “Strategies for Next Generation Secondary Battery Technology.” 2016. Doctoral Dissertation, University of Florida. Accessed August 25, 2019. http://ufdc.ufl.edu/UFE0049809.

MLA Handbook (7th Edition):

Kellar, Michael D. “Strategies for Next Generation Secondary Battery Technology.” 2016. Web. 25 Aug 2019.

Vancouver:

Kellar MD. Strategies for Next Generation Secondary Battery Technology. [Internet] [Doctoral dissertation]. University of Florida; 2016. [cited 2019 Aug 25]. Available from: http://ufdc.ufl.edu/UFE0049809.

Council of Science Editors:

Kellar MD. Strategies for Next Generation Secondary Battery Technology. [Doctoral Dissertation]. University of Florida; 2016. Available from: http://ufdc.ufl.edu/UFE0049809

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