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Electrical and Computer Engineering
University of Nevada, Las Vegas
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Articles 1 - 6 of 6
Full-Text Articles in Physical Sciences and Mathematics
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 …
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.
Buffering Pv Output During Cloud Transients With Energy Storage, Yacouba Moumouni
Buffering Pv Output During Cloud Transients With Energy Storage, Yacouba Moumouni
College of Engineering: Graduate Celebration Programs
The Problem
• Photovoltaic output power can be affected by many factors including clouds passing overhead.
• Utilities in generally prefer a guaranteed power delivery level over some specified power delivery period.
• Power delivered during peak demand hours is generally more valued by utilities. For the Desert Southwest this is in the summertime afternoons. For the local area this will be defined as 1-5 pm for the three summer months.
• While battery power can be adapted to this problem, large batteries to be expensive.
Real-Time Face Detection And Recognition, Parker Hill, Brendan Morris
Real-Time Face Detection And Recognition, Parker Hill, Brendan Morris
College of Engineering: Graduate Celebration Programs
The face has become a popular biometric for identification due to the wide range of features and difficulty in manipulation of the metric. In order to work towards a robust facial recognition system, this work contains a foundation for using the face as a recognition metric. First, faces are detected from still images using a Viola-Jones object detection algorithm. Then, Eigenfaces is applied to the detected faces. The system was tested on face databases as well as real-time feed from a web camera.