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Articles 1 - 8 of 8
Full-Text Articles in Entire DC Network
The Simulation Of Resonant Tunneling Diodes, Woodrow A. Gilbertson, Pengyu Long, Jim Fonseca, Gerhard Klimeck
The Simulation Of Resonant Tunneling Diodes, Woodrow A. Gilbertson, Pengyu Long, Jim Fonseca, Gerhard Klimeck
The Summer Undergraduate Research Fellowship (SURF) Symposium
The goal of this project is to improve the simulation of an electrical device known as a Resonant Tunneling Diode (RTD). Diodes are in most electronic devices today, but RTDs have 10 times greater switching speeds than regular diodes. This increase in efficiency would have impacts from supercomputers to the next big cell phone. The increased functionality of the simulation tool will come from implementing more recent mathematical solvers and modeling techniques. The simulation tool makes use of a variant of Non-Equilibrium Green Functions (NEGF) with an effective mass approximation. The two contacts are treated as equilibrium regions and the …
Simulation Of Bio-Inspired Porous Battery Electrodes, Raju Gupta, R. Edwin Garcia, Rui Tu
Simulation Of Bio-Inspired Porous Battery Electrodes, Raju Gupta, R. Edwin Garcia, Rui Tu
The Summer Undergraduate Research Fellowship (SURF) Symposium
Advancement of technology has led to the increase in use of electronic devices. However, longer life of the rechargeable battery used in electronic devices is one of the biggest issue and demand in the world of electronic devices at present. Battery's performance is affected by the orientation, arrangement, shape and size, and porosity of the materials out of which battery electrodes are made. The goal of this project is to develop a set of numerical libraries that allow developing material micro structures that will allow increasing the performance of rechargeable batteries. We focused on the development of an algorithm that …
Constructing Representative Social Networks For Disease Simulation, Tao Yang, Mario Ventresca
Constructing Representative Social Networks For Disease Simulation, Tao Yang, Mario Ventresca
The Summer Undergraduate Research Fellowship (SURF) Symposium
Diseases spread mechanisms have been questioned and studied for many years. The ability to make predictions about an epidemic could enable scientists to evaluate inoculation/ isolation plans, control the mortality rate, and prevent the future course of an outbreak. Accurate predictions, however, are extremely hard to make and requires interdisciplinary solutions from epidemiology, sociology, statistics, graph theory, and Computer Science. For making the prediction, currently few network analysis platforms written in C++ are designed and optimized. The research is aimed to address this gap by exploring methods of constructing social contact network, simulating disease spreading, and proposing mitigation strategies for …
Microstructure Development Of Granular System During Compaction, Chen Shang, Marcial Gonzalez
Microstructure Development Of Granular System During Compaction, Chen Shang, Marcial Gonzalez
The Summer Undergraduate Research Fellowship (SURF) Symposium
Granular materials is the second most manipulated material in the industry today. They are easy to transport and more and more newly developed materials cannot stand the process of traditional casting, like energetic materials and bio-materials, but will survive the powder compaction process. Having a better understanding of the microstructure development of granular systems during compaction process, especially for particles that will heavily deform under loading, will give an insight of how to better process the powders to produce materials with overall better performance comparing to bulk materials. The main theory and mechanism applied are Hertz law and nonlocal contact …
Developing Compact Models For Passive Devices On Ibm 45nm Cmos Soi Technology, Yufei Feng, Yanfei Shen, Saeed Mohammadi
Developing Compact Models For Passive Devices On Ibm 45nm Cmos Soi Technology, Yufei Feng, Yanfei Shen, Saeed Mohammadi
The Summer Undergraduate Research Fellowship (SURF) Symposium
The standard IBM 45 nm technology is widely adopted for industrial and academic purpose by integrates circuit designers. Original models provided by foundry are not accurate, which might cause inaccuracy in circuit simulations. Equivalent circuit models, using RLC elements to simulate electrical component, will effectively deliver their electrical performance. This study consists of four steps to construct these models. First, Cadence Virtuoso, the commercial circuit design software was used to run simulations and extract data for different device parameters. Second, analyzing tools, like Microsoft Excel or Matlab, are used to analyze the extracted data. Then, equations are written for each …
Crack Propagation Simulation Tool, Nilofer Rajpurkar, Hojin Kim, Alejandro Strachan
Crack Propagation Simulation Tool, Nilofer Rajpurkar, Hojin Kim, Alejandro Strachan
The Summer Undergraduate Research Fellowship (SURF) Symposium
In the massively engineered world that exists today, understanding material behavior is of paramount importance in caring for human safety in design. Molecular dynamic simulations on crack propagation through materials allow visualization of material behavior under stress. The tool, developed by the nanoHUB group as a part of the Network for Computational Nanotechnology at Purdue University, makes performing such simulations accessible to undergraduate students, highly qualified researchers, and all those in between. First, the input deck for the simulation parameters was simplified from the complex, language-specific code into a simple, user-friendly Graphic User Interface (GUI). Several interesting example cases were …
Mathematical Modelling Of Highway Traffic Policies, Benjamin Squire, John-Paul Mann, Nathan Minor
Mathematical Modelling Of Highway Traffic Policies, Benjamin Squire, John-Paul Mann, Nathan Minor
Symposium Of University Research and Creative Expression (SOURCE)
Extensive research has been done to model and simulate traffic flow in order to answer valuable questions in the implementation of different traffic policies. A major open question is whether or not the stay right except to pass rule is an efficient traffic policy in terms of traffic flow and safety. We develop a particle-interaction based model which stems from how cars react and make decisions using locally restricted knowledge and observe how snapshots of these processes over a large closed continuous road govern the dynamics of the overall traffic flow. Through computer simulation, we observe and analyze the difference …
Building Resilience In A Major City Evacuation Plan Using Simulation Modeling, Adam Kirby, James Eric Dietz, Eric Matson, Joseph Pekny, Clifford Wojtalewicz
Building Resilience In A Major City Evacuation Plan Using Simulation Modeling, Adam Kirby, James Eric Dietz, Eric Matson, Joseph Pekny, Clifford Wojtalewicz
International Institute for Infrastructure Resilience and Reconstruction (I3R2) Conference
This study provides data on the optimal staff, materials, space, and time resources required to operate a regional hub reception center, a “short-term facility with the goal to process and transport displaced survivors (evacuees) to temporary or permanent shelters following a catastrophic incident,” (Regional Catastrophic Planning Team, 2012). The facility will process approximately 20,000 evacuees over its entire seven-day duration following a disaster to assist in community resilience. The study was performed using a model created using the computer simulation software, AnyLogic. The results of the study demonstrated that the goals set forth by the Illinois-Indiana-Wisconsin Regional Catastrophic Planning Team …