Now showing items 91-100 of 100
Charge and Exciton Dynamics in Organic Optoelectronic Devices
(2019)
Organic optoelectronics use carbon-based molecules to interface between light and electrical signals. The operation of these devices is determined by the dynamic behaviors of their charges and excited states. For example, ...
Investigation of Current Induced Spin Polarization in III-V Semiconductor Epilayers
(2017)
In the development of a semiconductor spintronics device, a thorough understanding of spin dynamics in semiconductors is necessary. In particular, electrical control of electron spins is advantageous for its compatibility ...
First-Principles Calculations on the Electronic, Optical, and Vibrational Properties of Ultrawide-Band-Gap Semiconductor Materials
(2019)
First-principles calculations enable an unprecedented atomistic insight to experimentally-observed phenomena on a massive scale. Such calculations can intelligently guide experimental efforts to save both human time and ...
Spin Injection, Transport, and Modulation in III-V Semiconductors.
(2012)
Spintronic devices, which aim to utilize the quantum mechanical spin properties of electrons, offer the potential of high-speed and low-power operation with performance possibly exceeding those of conventional charge-based ...
New Methods for Terahertz and Ultrafast Infrared Spectroscopy of Biological Materials and Graphene Buffer Layer
(2019)
The development of advanced optical spectroscopy has always been a frontier in optics and material science. This dissertation develops several new methods for terahertz (THz) and infrared spectroscopy and presents their ...
Probing Heat Transport and Energy Conversion at the Atomic and Single Molecule Scale
(2018)
The study of heat transport and energy conversion constitutes an important subject in modern physics and engineering research. The widely-applied Fourier’s and Planck’s laws have proven to be very useful to describe heat ...
Surface Dimer Engineering and Properties of GaAs(N)(Bi) Alloys
(2018)
Due to the significant bandgap narrowing induced by dilute fractions of N and Bi in III-V semiconductors, emerging dilute nitride-bismide semiconductor alloys are of significant interest for long-wavelength applications ...
Formation of Embedded Nitride Semiconductor Nanocrystals.
(2012)
In this thesis, the formation, phase selection, and spatial positioning of GaAs:N
(InAs:N) nanocomposite layers produced by N-implantation, focused ion beam (FIB)
irradiation, and rapid thermal annealing (RTA) of GaAs ...
Hsp70 chaperone Proteins and their Interactions with Various Drugs as Studied by Nuclear Magnetic Resonance.
(2011)
Chaperone proteins and their cochaperones are perhaps one of the most intriguing systems for investigation. Ubiquitous in nature, they can be found in every organism and that perhaps is the reason that their sequence shows ...
Nonlinear Optical Enhancement from Aggregate and Ensemble Effects in Organic Systems.
(2011)
Organic optoelectronics provide several advantages over traditional Si based systems. These advantages are typically cost, ease of manufacturing, and environmental impact. One area of particular interest in the field of ...