Browsing by Title
Now showing items 4603-4622 of 17421
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(2009-04-10)Department: ChemistryThe past decade has witnessed the birth of the field of Metabolomics, which aims to study the "chemical fingerprints" left behind by specific cellular processes. The chemical fingerprints themselves consist of the totality ...
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(2020-05-19)Department: Interdisciplinary Materials ScienceThe advent of the lithium ion battery enabled a revolution in wireless electronic devices. The next wave of wireless devices, from smart watches to biosensors, are smaller, and often embedded within existing infrastructures ...
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(2022-03-25)Department: ChemistryElectrochemical mediators, redox-active compounds used as electron transfer shuttles, are required for various electrochemical applications such as fuel or photovoltaic cells and biosensors. Biosensors, in particular, ...
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(2017-10-03)Department: Mechanical EngineeringMetamaterials, which derive their optical properties from subwavelength structures, have emerged in recent years as a promising way to tune refractive index and achieve optical properties not present in natural materials. ...
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(2020-03-24)Department: PhysicsThe E2/M1 mixing ratios have been measured for transitions from states in the one phonon gamma-vibrational bands to states in the ground state bands of of the neutron rich, even-even, deformed isotopes 102,104,106,108Mo, ...
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(2006-12-04)Department: PhysicsIn this dissertation we present our work on developing new beam monitoring methods for linear accelerators and free-electron lasers. Our current work concentrates on the diffraction radiation based beam monitoring technique ...
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Electron Beams from Needle Photocathodes and a New Theory of the Smith-Purcell Free-Electron Laser (2007-02-15)Department: PhysicsA promising source of radiation in the important terahertz (THz) region of the spectrum is the Smith-Purcell free-electron laser (SPFEL). This dissertation presents a new theory of the SPFEL, taking into account dispersion ...
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(2011-03-21)Department: PhysicsThis dissertation presents the study of electron field emission from nanostructures using a first-principles computational framework. Field emission is studied under various conditions such as laser illumination, spin ...
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(2021-08-13)Department: Interdisciplinary Materials ScienceElectron transfer between biomolecules and electrode surfaces is greatly important in the development and understanding of bioelectrochemical systems. This dissertation studies two bioelectrochemical systems: Photosystem ...
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(2017-09-25)Department: PhysicsNovel nano electronic devices are necessary in order to continue the advancement of computational power of microprocessors in the next decades. On the theory side, it is an open boundary system and usually modeled as a ...
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(2011-08-04)Department: ChemistryBisAMidine chiral proton catalysts are a class of mixed Brønsted acid/Brønsted base reagents amenable to both electronic and steric modification. A counterintuitive approach in which the creation of more Brønsted basic ...
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(2008-04-28)Department: Interdisciplinary Materials ScienceSilicon carbide has been preferred over other wide band-gap semiconductors for high power applications because of its unique ability to grow a thermal oxide, challenges lie in the quality of the dielectric and of the ...
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(Journal of Electronic Publishinghttp://www.journalofelectronicpublishing.org/, 1999)The new world of digital information requires a new way of providing access to that information — while keeping the copyright backbone. It might be technically easier to create a digital infrastructure without copyright: ...
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(2009-07-29)Department: ChemistryThe determination of electrophoretic properties and the size separation of monolayer protected clusters (MPCs) are presented in this thesis. MPCs are metallic nanoparticles encapsulated in a protecting thiolate monolayer. ...
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(2018-03-22)Department: NeuroscienceNEUROSCIENCE Electrophysiological Signatures of Multisensory Temporal Processing in the Human Brain David Michael Simon Dissertation under the direction of Professor Mark T. Wallace Events in the natural world frequently ...
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(2015-04-25)Department: Chemical EngineeringFuel cells are an important component of a renewable energy-based economy, with applications in transportation, portable, and stationary power. Alkaline anion exchange membrane fuel cells in particular are of interest ...
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(2023-07-24)Department: Interdisciplinary Materials ScienceElectrospinning is a promising approach for fabricating energy storage materials with significant morphological control. Electrospun fibers provide an inherently porous template that can be easily modified with additives ...
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(2014-08-04)Department: ChemistryMembrane-electrode-assemblies (MEAs) were fabricated with electrospun nanofiber electrodes containing 40% Pt/C, a binder of Nafion and poly(acrylic acid), and a Nafion 212 cation-exchange membrane. MEA performance in a ...
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(2019-04-11)Department: Chemical EngineeringThe fabrication of highly charged and highly durable proton-exchange membranes (PEMs) is a critical step toward improving the performance and lifetime of hydrogen fuel cells. State of the art commercial PEMs from ...
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(2013-04-08)Department: Chemical EngineeringProton exchange membrane fuel cells (PEMFCs) are an attractive power plant for applications ranging from automobiles to personal electronic devices. However, PEMFCs still need improvement, particularly regarding the ...