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Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
New N-Nitrosodimethylamine (Ndma) Precursors That React With Ozone: Implications For Water Reuse, Erica Marti, Aleks Pisarenko, Eric Dickenson
New N-Nitrosodimethylamine (Ndma) Precursors That React With Ozone: Implications For Water Reuse, Erica Marti, Aleks Pisarenko, Eric Dickenson
College of Engineering: Graduate Celebration Programs
Ozonation is a promising treatment step for water reuse. Compared to the “gold standard” with reverse osmosis and advanced oxidation, ozone requires less energy and does not result in a waste brine. This makes ozone more cost-effective. However, the formation of nitrosamines may be a significant barrier to the use of ozonation in water reuse applications, particularly for potable reuse.
Solar Cell Design Using Metamaterials, Yang Liu, Yitung Chen, Jichun Li
Solar Cell Design Using Metamaterials, Yang Liu, Yitung Chen, Jichun Li
College of Engineering: Graduate Celebration Programs
Natural structure with simultaneous negative permittivity and permeability has not been discovered yet. However, using specially-designed metal embedded in dielectric bodies can achieve a kind of artificial negative index. This periodic structure which is smaller than the guided wavelength is known as a metamaterial. However, recent designs of metamaterials have some disadvantages when they are used in the application of solar cell. The perfect absorption is only within a narrow band, and for most of the solar spectrum, the absorption is no more than 10%. Here, a new kind of absorber for the solar spectrum has been designed and analyzed, …
Applied Analysis Of Ionic Polymer Metal-Composite Actuators, Siul Ruiz, Benjamin Mead, Woosoon Yim
Applied Analysis Of Ionic Polymer Metal-Composite Actuators, Siul Ruiz, Benjamin Mead, Woosoon Yim
College of Engineering: Graduate Celebration Programs
- IPMC is a type of smart material called an electroactive polymer
- Consists of an ionic polymer such as Nafion or Flemion and a conducive metal such as platinum or gold
- COMSOL multi-physics simulations accurately model the experimental displacement results
- Optimization performed using the multi-physics model to find the maximum deflection, force, and twisting
- Using the closed loop control system accurate IPMC tip location can be achieved
- This control system has been extended to function using a computer mouse as an input
Modeling And Architectural Simulations Of The Statistical Static Timing Analysis Of The Variation Sources For Vlsi Circuits, Abu M. Baker
Modeling And Architectural Simulations Of The Statistical Static Timing Analysis Of The Variation Sources For Vlsi Circuits, Abu M. Baker
College of Engineering: Graduate Celebration Programs
As CMOS technology scales down, process variation introduces significant uncertainty in power and performance to VLSI circuits and significantly affects their reliability. Although Static-Timing Analysis (STA) remains an excellent tool, current trends in process scaling have imposed significant difficulties to STA. As one of the promising solutions, Statistical static timing analysis (SSTA) has become the frontier research topic in recent years in combating such variation effects. This poster will be focusing on two aspects of SSTA and its applications in VLSI designs: (1) Statistical timing modeling and analysis; and (2) Architectural implementations of the atomic operations (max and add) using …
On High-Performance Parallel Decimal Fixed-Point Multiplier Designs, Ming Zhu
On High-Performance Parallel Decimal Fixed-Point Multiplier Designs, Ming Zhu
College of Engineering: Graduate Celebration Programs
Decimal computations are required in finance, and etc.
- Precise representation for decimals (E.g. 0.2, 0.7… )
- Performance Requirements (Software simulations are very slow)
A Computation Model For Nanoantenna-Based Solar Cell With High Conversion Efficiency, Yiyan Li, Ke-Xun Sun, Yingtao Jiang
A Computation Model For Nanoantenna-Based Solar Cell With High Conversion Efficiency, Yiyan Li, Ke-Xun Sun, Yingtao Jiang
College of Engineering: Graduate Celebration Programs
- Build a model of spiral nanoantenna and an antenna
array based solar cell collector. - Using Rao-Wilton-Glisson (RWG) basis functions to
simulate the spiral nanoantennas. - We calculate the frequency response of the radiation
gain as the indicator of receiving bandwidth which is a
key factor in conversion efficiency.
Mono-Sized Sphere Packing Algorithm Development Using Optimized Monte Carlo Technique, Karn Soontrapa, Yitung Chen
Mono-Sized Sphere Packing Algorithm Development Using Optimized Monte Carlo Technique, Karn Soontrapa, Yitung Chen
College of Engineering: Graduate Celebration Programs
In this research, fuel cell catalyst layer was developed using the optimized sphere packing algorithm. An optimization technique named adaptive random search technique (ARSET) was employed in this packing algorithm. The ARSET algorithm will generate the initial location of spheres and allow them to move in the random direction with the variable moving distance, randomly selected from the sampling range (a), based on the Lennard–Jones potential and Morse potential of the current and new configuration. The solid fraction values obtained from this developed algorithm are in the range of 0.610–0.624 while the actual processing time can significantly be reduced by …