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Electronic Devices and Semiconductor Manufacturing Commons

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Mohat Tool To Illustrate Diode And Transistor Modes Of Operation Using Ltspice, Getu D. Engdaw 2015 California Polytechnic State University - San Luis Obispo

Mohat Tool To Illustrate Diode And Transistor Modes Of Operation Using Ltspice, Getu D. Engdaw

Electrical Engineering

This project develops a tool to identify the modes of operation of diodes and transistors in a circuit. The MoHAT tool receives schematics or circuit files generated from LTspice, and it determines the state of each diode and transistor. This tool illustrates diodes, BJT and MOS regions of operations using text or graphics accordingly. The tool also suggests necessary adjustments to switch from one mode of operation to another upon users request. Furthermore, the tool specifies if a transistor functions in amplification region. The MoHAT tool compares the nodal voltages of an element and determines the mode of operation.


Monitoring The Threat Of Sinkhole Formation Under A Portion Of Us 18 In Cerro Gordo County, Iowa Using Tdr Measurements, Kevin O'Connor, Matthew Trainum 2015 GeoTDR, Inc

Monitoring The Threat Of Sinkhole Formation Under A Portion Of Us 18 In Cerro Gordo County, Iowa Using Tdr Measurements, Kevin O'Connor, Matthew Trainum

Sinkhole Conference 2015

Sinkhole formation is a common occurrence in northeast Iowa, and U.S. 18 in Cerro Gordo County was constructed over an area where sinkhole formation had only been locally known. It had not been recorded or identified in the Iowa DNR database at the time. Since 2004, sinkholes have developed along the right of way. Geophysical surveys contributed very little in the identifying the cause. However a Soil Survey (drilling program) identified numerous voids within carbonate bedrock. The soil borings indicated that shale overlying the carbonate rock has been removed/eroded, and resulted in the development of a karst subsurface ...


Science Behind The Magnetic Field Therapy, D. Thombre,, Megha Thombre 2015 Selected Works

Science Behind The Magnetic Field Therapy, D. Thombre,, Megha Thombre

Innovative Research Publications IRP India

Magnetic therapy is the use of magnets to relieve pain in various areas of the body. It is the simplest, cheapest and entirely painless system of treatment with no side effects. In present article, discussion of fundamental aspect about the application of magnetic field (Natural and artificial) and how it apply to the human body with suggestions. Magnetic field is produce by magnet or electromagnetic generating devices are able to penetrate the human body because human body is magnetic hence magnetic field affect the functioning of human body. Suggestions are, High blood pressure person sleep with foots towards west and ...


Fabrication Of Photonic Band Gap Materials Using Microtransfer Molded Templates, Wai Leung, Kristen Constant, Kai-Ming Ho, Mihail Sigalas, Henry Kang, Chang-Hwan Kim, David Cann, Jae Hwang Lee 2015 Iowa State University

Fabrication Of Photonic Band Gap Materials Using Microtransfer Molded Templates, Wai Leung, Kristen Constant, Kai-Ming Ho, Mihail Sigalas, Henry Kang, Chang-Hwan Kim, David Cann, Jae Hwang Lee

Kristen P. Constant

A method of manufacturing photonic band gap structures operable in the optical spectrum has been presented. The method comprises the steps of creating a patterned template for an elastomeric mold, fabricating an elastomeric mold from poly-dimethylsiloxane (PDMS) or other suitable polymer, filling the elastomeric mold with a second polymer such as epoxy or other suitable polymer, stamping the second polymer by making contact with a substrate or multilayer structure, removing the elastomeric mold, infiltrating the multilayer structure with ceramic or metal, and heating the multilayer structure to remove the second polymer to form a photonic band gap structure.


Synthesis And Characterization Of 2d Atomic Layers, Adam Charnas, Gang Qiu, Peide Ye 2015 Purdue University

Synthesis And Characterization Of 2d Atomic Layers, Adam Charnas, Gang Qiu, Peide Ye

The Summer Undergraduate Research Fellowship (SURF) Symposium

As electronic devices have continued to become smaller, a pressing need has developed for new technologies in order to surpass current size constraints. As such, 2-dimensional materials have become a topic of great interest in experimental device research. Monolayer black phosphorus, or phosphorene, is one such 2D material which shows significant potential as a p-type semiconductor. Phosphorene exhibits a number of unique and desirable electrical properties such as a layer-dependent band gap, high carrier mobility, and anisotropic conductivity. An investigation into optimal growth of black phosphorus, the precursor material to phosphorene, as well as characterization of phosphorene-based devices will be ...


Simulating Nanowires And Ultra-Thin Body Transistors Using Nemo5 On Nanohub.Org, Liang Yuan Dai, James E. Fonseca, Chu Yuan Chen, Gerhard Klimeck 2015 New Jersey Institute of Technology

Simulating Nanowires And Ultra-Thin Body Transistors Using Nemo5 On Nanohub.Org, Liang Yuan Dai, James E. Fonseca, Chu Yuan Chen, Gerhard Klimeck

The Summer Undergraduate Research Fellowship (SURF) Symposium

During the past twenty years, the most important aspects of semiconductor electronics have advanced into the nanometer range, resulting in exponential increases of microprocessor computing performance. As the size of electrical components continues to shrink, the cost of experimental research and industrial fabrication in this field has increased dramatically. Thus, the development of accurate nanoscale model simulations becomes necessary as a measure to decrease the high financial expenses of advancing semiconductor technology. This simulator supports atomistic modeling in order to provide an accurate description of the nanoscale devices, as current electrical components operate in the quantum regime and are affected ...


Alternating Current Electrokinetics Based Capacitive Affinity Biosensor: A Point-Of-Care Diagnostic Platform, Haochen Cui 2015 University of Tennessee - Knoxville

Alternating Current Electrokinetics Based Capacitive Affinity Biosensor: A Point-Of-Care Diagnostic Platform, Haochen Cui

Doctoral Dissertations

Capacitive bioaffinity detection using microelectrodes is considered as a promising label-free method for point-of-care diagnosis, though with challenges in sensitivity, specificity and the time “from sample to result.” This work presents an alternating current (AC)-electrokinetic based capacitive affinity sensing method that is capable of realizing rapid in-situ detection of specific biomolecular interactions such as probe-analyte binding. The capacitive biosensor presented here employs elevated AC potentials at a fixed frequency for impedimetric interrogation of the microelectrodes. Such an AC signal is capable of inducing dielectrophoresis (DEP) and AC electrothermal (ACET) effects, so as to realize in-situ enrichment of macro and ...


Microwave Characterization Of Nanostructured Ferroelectric Ba0.6sr0.4tio3 Thin Films Fabricated By Pulsed Laser Deposition, Angela Campbell, Rand Biggers, Guru Subramanyam, Gregory Kozlowski, Richard Kleismit, Hollie Zate, Simon Hopkins, Bartek Glowacki, Bonnie Riehl, Timothy Peterson 2015 Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB

Microwave Characterization Of Nanostructured Ferroelectric Ba0.6sr0.4tio3 Thin Films Fabricated By Pulsed Laser Deposition, Angela Campbell, Rand Biggers, Guru Subramanyam, Gregory Kozlowski, Richard Kleismit, Hollie Zate, Simon Hopkins, Bartek Glowacki, Bonnie Riehl, Timothy Peterson

Gregory Kozlowski

A series of nanostructured ferroelectric thin films of barium strontium titanate were fabricated using a pulsed laser deposition system with real-time in situ process control. Pulsed laser deposition parameters were controlled during the growth of nanostructured thin films for use in the development of high frequency tunable microwave devices. The thin films were all grown at the same substrate temperature and laser beam energy density, but the chamber oxygen partial pressure (COPP) was varied systematically from 19 mTorr through 1000 Torr. Structural and electromagnetic characterization was performed using atomic force microscopy and evanescent microwave microscopy, respectively. Atomic force microscopy showed ...


Strain Controlled Ultra-Low-Energy Magnetic Tunneling Junction, Hasnain Ahmad, Supriyo Bandyopadhyay, Jayasimha Atulasimha 2015 Virginia Commonwealth University

Strain Controlled Ultra-Low-Energy Magnetic Tunneling Junction, Hasnain Ahmad, Supriyo Bandyopadhyay, Jayasimha Atulasimha

Supriyo Bandyopadhyay

We are experimenting on designing a voltage-controlled ultra-low-energy Magnetic Tunneling Junction (MTJ) device using a soft single domain magnetostrictive layer (i.e. Galfenol: Fe1-xGax , x = 20 At%) coupled to a piezoelectric layer (i.e. PMN-PT). Special metal pads have been designed using photolithography to generate stress in the PMN-PT layer by applying electric field. The patterns of different shape anisotropic nano-magnets are designed using e-beam lithography and we have successfully fabricate FeGa nanomagnets with only 12 to 13 nanometer thickness by sputter deposition. These nanomagnets have been characterized by magnetic force microscopy for observing their switching capabilities ...


Common Mode Voltage Mitigation Strategies Using Pwm In Neutral-Point-Clamped Multilevel Inverters, Chad Alexander Somogyi 2015 Marquette University

Common Mode Voltage Mitigation Strategies Using Pwm In Neutral-Point-Clamped Multilevel Inverters, Chad Alexander Somogyi

Master's Theses (2009 -)

Over the last several decades, there has been consistent growth in the research and development of multilevel voltage-source inverter-based adjustable speed motor drives (ASDs) as a result of low cost, high reliability power semiconductors. The three-level neutral-point-clamped (NPC) ASD is a popular multilevel inverter used in low and medium voltage applications because of its ability to produce lower levels of total harmonic distortion (THD) and withstand higher voltages while preserving the rated output power compared to two-level ASDs. As with other voltage-source inverters, three-level NPC ASDs produce common-mode voltage (CMV) that can cause motor shaft voltages, bearing currents, and excess ...


Phase Locked Loop Integrated Circuit, Scott Buchanan, Jonathan Bonello 2015 California Polytechnic State University - San Luis Obispo

Phase Locked Loop Integrated Circuit, Scott Buchanan, Jonathan Bonello

Electrical Engineering

No abstract provided.


Layered Iii-Vi Chalcogenide Semiconductor Crystals For Radiation Detectors, K. Mandal, A. Mertiri, G. Pabst, R. Roy, Y. Cui, P. Battacharya, M. Groza, A. Burger, A. Conway, R. Nikolic, A. Nelson, S. Payne 2015 University of South Carolina - Columbia

Layered Iii-Vi Chalcogenide Semiconductor Crystals For Radiation Detectors, K. Mandal, A. Mertiri, G. Pabst, R. Roy, Y. Cui, P. Battacharya, M. Groza, A. Burger, A. Conway, R. Nikolic, A. Nelson, S. Payne

Krishna C. Mandal

No abstract provided.


Ultrafast Electronic Relaxation Dynamics In Layered Iodide Semiconductors:  A Comparative Study Of Colloidal Bii3 And Pbi2 Nanoparticles, A. Sengupta, K. Mandal, J. Zhang 2015 University of South Carolina - Columbia

Ultrafast Electronic Relaxation Dynamics In Layered Iodide Semiconductors:  A Comparative Study Of Colloidal Bii3 And Pbi2 Nanoparticles, A. Sengupta, K. Mandal, J. Zhang

Krishna C. Mandal

No abstract provided.


Gamma Ray Detection With Cd0.9Zn0.1Te Based Detectors Grown Using A Te Solvent Method, S. Chaudhuri, K. Zavalla, Ramesh Krishna, K. Mandal 2015 University of South Carolina

Gamma Ray Detection With Cd0.9Zn0.1Te Based Detectors Grown Using A Te Solvent Method, S. Chaudhuri, K. Zavalla, Ramesh Krishna, K. Mandal

Krishna C. Mandal

No abstract provided.


Ultrafast Electronic Relaxation Dynamics In Pbi2 Semiconductor Colloidal Nanoparticles:  A Femtosecond Transient Absorption Study, A. Sengupta, B. Jiang, K. Mandal, J. Zhang 2015 University of South Carolina - Columbia

Ultrafast Electronic Relaxation Dynamics In Pbi2 Semiconductor Colloidal Nanoparticles:  A Femtosecond Transient Absorption Study, A. Sengupta, B. Jiang, K. Mandal, J. Zhang

Krishna C. Mandal

No abstract provided.


Theoretical Studies Of Defect States In Gase And Gate, Zs. Rak, S. Mahanti, K. Mandal, N. Fernelius 2015 University of South Carolina - Columbia

Theoretical Studies Of Defect States In Gase And Gate, Zs. Rak, S. Mahanti, K. Mandal, N. Fernelius

Krishna C. Mandal

No abstract provided.


Low Temperature Crystal Growth And Characterization Of Cd0.9Zn0.1Te For Radiation Detection Applications, Ramesh Krishna, Timothy Hayes, P. Muzykov, K. Mandal 2015 University of South Carolina

Low Temperature Crystal Growth And Characterization Of Cd0.9Zn0.1Te For Radiation Detection Applications, Ramesh Krishna, Timothy Hayes, P. Muzykov, K. Mandal

Krishna C. Mandal

No abstract provided.


Effects Of Surface Modification On N-Cadmium Telluride Photoelectrochemical Solar Cells, K. Mandal, S. Basu, D. Bose 2015 University of South Carolina - Columbia

Effects Of Surface Modification On N-Cadmium Telluride Photoelectrochemical Solar Cells, K. Mandal, S. Basu, D. Bose

Krishna C. Mandal

No abstract provided.


Investigation Of Cdznte Crystal Defects Using Scanning Spreading Resistance Microscopy, J. Liu, K. Mandal, Goutam Koley 2015 University of South Carolina - Columbia

Investigation Of Cdznte Crystal Defects Using Scanning Spreading Resistance Microscopy, J. Liu, K. Mandal, Goutam Koley

Krishna C. Mandal

No abstract provided.


X-Ray Imaging With Semiconductor Films, K. Shah, P. Bennett, L. Cirignano, Y. Dmitriyev, M. Klugerman, K. Mandal, L. Moy, R. Street 2015 University of South Carolina - Columbia

X-Ray Imaging With Semiconductor Films, K. Shah, P. Bennett, L. Cirignano, Y. Dmitriyev, M. Klugerman, K. Mandal, L. Moy, R. Street

Krishna C. Mandal

No abstract provided.


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