Now showing items 1-10 of 17
Designing Thermal Modulators for Portable GC x GC Systems.
(2015)
Microelectromechanical systems (MEMS) have the advantage of scale and can be manufactured in bulk. One of the active areas of MEMS research is the development of micro-scale comprehensive two-dimensional gas chromatography ...
Nonholonomic Virtual Constraints and Gait Optimization for Robust Robot Walking Control.
(2016)
Bipedal locomotion is well suited for mobile robotics because it promises to allow robots to traverse difficult terrain and work effectively in man-made environments. Despite this inherent advantage, however, no existing ...
Large-scale Real-space Kohn-Sham Density Functional Theory Calculations Using Adaptive Finite-element Discretization.
(2014)
Past few decades have seen an increasingly important role played by quantum mechanical calculations based on Kohn-Sham density functional theory (DFT) in the investigation of wide variety of materials properties. However, ...
All-Electron Ground-State and Time-Dependent Density Functional Theory: Fast Algorithms and Better Approximations
(2019)
Density functional theory (DFT), in its ground-state as well as time-dependent variant, have enjoyed incredible success in predicting a range of physical, chemical and materials properties. Although a formally exact theory, ...
Applications of Computation in Acoustics: Ultrasound Bioeffects and Underwater Transmission Loss Uncertainty
(2017)
This dissertation presents work in which computational modeling is used to advance two areas of interest in modern acoustics. First, we develop computational models to study the poorly understood physics underlying ...
Piezoelectric Impedance-Based Structural Health Monitoring using Bistable and Adaptive Piezoelectric Circuitry
(2017)
Structural health monitoring (SHM) has been extensively explored for various aerospace, civil, and mechanical systems due to its significant importance in enhancing life-safety and economic benefits. Among various SHM ...
Efficient Output-Based Adaptation Mechanics for High-Order Computational Fluid Dynamics Methods
(2018)
As numerical simulations are applied to more complex and large-scale problems, solution verification becomes increasingly important in ensuring accuracy of the computed results. In addition, although improvements in ...
An Experimental Investigation of Premixed Combustion in Extreme Turbulence
(2017)
This work has explored various aspects of high Reynolds number combustion
that have received much previous speculation. A new high-Reynolds number
premixed Bunsen burner, called Hi-Pilot, was designed to produce ...
Numerical and Analytical Multiscale Modeling of High Cycle Fatigue in Advanced Materials
(2018)
Integrated Computational Materials Engineering (ICME) approaches are gaining popularity in various industries, such as electronics, automobile, and aerospace, due to their focus on multiscale simulation-based design and ...
The Phonovoltaic Cell: Harvesting Optical Phonons in Order to Approach the Carnot Limit
(2017)
A new energy conversion device, the phonovoltaic (pV) cell, is proposed. In this cell, a non-equilibrium (hot) population of optical phonons more energetic than the bandgap produces electron-hole pairs in a p-n junction, ...