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Articles 31 - 60 of 72
Full-Text Articles in Engineering
A Voice Activated Prosthetic Mode Of Control, Will Picken
A Voice Activated Prosthetic Mode Of Control, Will Picken
UNO Student Research and Creative Activity Fair
There are many options for a prosthetic mode of control. The most commonly created modes of control involve surface EMG (sEMG) and require that the user have well defined muscle activation in order to trigger the movement of the prosthetic. Unfortunately, many prosthetic users do not have the required muscle tone or strength to trigger these sensors, so the need for a control mechanism that doesn’t rely on sEMG is clear. This study focuses on the development of a low-cost, voice activated prosthetic mode of control compatible with the prosthetics developed by Dr. Zuniga and his research team.
The printed …
Experimental Evaluation Of A Krypton Propellant Arrangement In A T-100-3 Hall-Effect Thruster, Adam Patel, Javier Cortina Fernandez, Justin Chow, Osvaldo Alejandro Martin, Alexey Shashurin
Experimental Evaluation Of A Krypton Propellant Arrangement In A T-100-3 Hall-Effect Thruster, Adam Patel, Javier Cortina Fernandez, Justin Chow, Osvaldo Alejandro Martin, Alexey Shashurin
The Summer Undergraduate Research Fellowship (SURF) Symposium
Stationary Hall thrusters are electric, moderate-specific impulse propulsion systems developed in Russia. These devices manipulate electric and magnetic fields to expel ionized gas (plasma) components, resulting in thrust. The success of Hall-effect engines in USSR satellite-transfer missions quickly sparked western interest in the design. Extensive government and academic study commenced shortly after the dissolution of the Soviet Union, when the technology was made available to the United States. The common SPT-100 model was the primary subject of such studies. Unfortunately, limited literature exists for rare and uncommon Hall thruster models. The T-100-3 stationary plasma thruster suffers from this gap; few …
Study Of The Effective Thermal Conductivity Of Polymer Composites With Varying Filler Arrangements, Debraliz Isaac Aragones, Rajath Kantharaj, Aaditya Candadai, Amy Marconnet
Study Of The Effective Thermal Conductivity Of Polymer Composites With Varying Filler Arrangements, Debraliz Isaac Aragones, Rajath Kantharaj, Aaditya Candadai, Amy Marconnet
The Summer Undergraduate Research Fellowship (SURF) Symposium
Alternative thermal management solutions for electronic devices are being widely explored due to the increasing heat concentration that results from shrinking sizes and increasing power of modern electronics. Clearly, there is a need to spread the heat effectively in these systems, and polymer composites can potentially provide high thermal conductivity at low filler fraction while maintaining desirable mechanical properties for electronic packaging. The present study aims to investigate the effective thermal conductivity of various copper filler arrangements in a polymer matrix. The polymer composites are fabricated using laser cut acrylic templates to embed aligned copper rods in epoxy and create …
Spice Based Compact Model For Electrical Switching Of Antiferromagnet, Xe Jin Chan, Jan Kaiser, Pramey Upadhyaya
Spice Based Compact Model For Electrical Switching Of Antiferromagnet, Xe Jin Chan, Jan Kaiser, Pramey Upadhyaya
The Summer Undergraduate Research Fellowship (SURF) Symposium
A simulation framework that can model the behavior of antiferromagnets (AFMs) is essential to building novel high-speed devices. The electrical switching of AFMs allows for high performance memory applications. With new phenomena in spintronics being discovered, there is a need for flexible and expandable models. With that in mind, we developed a model for AFMs which can be used to simulate AFM switching behavior in SPICE. This approach can be modified for adding modules, keeping pace with new developments. The proposed AFM switching model is based on the Landau-Lifshitz-Gilbert equation (LLG). LLG along with an exchange coupling module is implemented …
Investigation Of The Skin Effect In Alternating Currents, Matthew Liang
Investigation Of The Skin Effect In Alternating Currents, Matthew Liang
The International Student Science Fair 2018
My research is on the investigation of the skin effect in alternating currents. The skin effect is when an alternating current tends to flow on the surface of the conductor, such that the current density is highest near the surface, and decreases with greater depths in the conductor. This is due to the alternating current inducing changing magnetic fields, which in turn induces currents that oppose the original flow of current, resisting the current flowing through the centre the most. This reduces the effective cross-sectional area of the conductor and increases the resistance, causing increased power losses. This effect becomes …
Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks
Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks
The International Student Science Fair 2018
We have innovated “The Energy Conversion System for Travelers” or the ECoST. With the fact that most travelers have wheeled cabin-bags, whilst walking, the wheels will rotate so why don’t we harvest electricity from this kinetic energy? We thus install our innovation, the ECoST, to the bag to generate electricity from the spinning wheels. The electricity is then kept in the storage unit and ready to charge your empty battery devices in an emergency case via a USB port. To make life easy, our ECoST was designed to replicate the power bank charging method; therefore, we can charge …
Solar-Powered Bushfire Detection Mechanism, Aryaman Sud
Solar-Powered Bushfire Detection Mechanism, Aryaman Sud
The International Student Science Fair 2018
This project designed a prototype preventative measure for heat-induced disasters like bushfires and general home fires. The motivation for this project was the loss of life and property due to wildfire in rural Australia. The micro-controller will send an alert message and sound an alarm when the temperature value exceeds or equals the set temperature of . It is programmed using the programming language embedded ‘C’. Comprising of a solar panel, siren, temperature sensor and a Bluetooth module, this eco-friendly device can provide digitalised warnings to homes and farms where protection matters most.
Simplistic programming using the KEIL IDE software …
Solar-Powered Bushfire Detection Mechanism, Aryaman Sud
Solar-Powered Bushfire Detection Mechanism, Aryaman Sud
The International Student Science Fair 2018
This project designed a prototype preventative measure for heat-induced disasters like bushfires and general home fires. The motivation for this project was the loss of life and property due to wildfire in rural Australia. The micro-controller will send an alert message and sound an alarm when the temperature value exceeds or equals the set temperature of . It is programmed using the programming language embedded ‘C’. Comprising of a solar panel, siren, temperature sensor and a Bluetooth module, this eco-friendly device can provide digitalised warnings to homes and farms where protection matters most.
Simplistic programming using the KEIL IDE software …
Investigation Of The Skin Effect In Alternating Currents, Matthew Liang
Investigation Of The Skin Effect In Alternating Currents, Matthew Liang
The International Student Science Fair 2018
My research is on the investigation of the skin effect in alternating currents. My project is broken down into 4 sub-aims. The first aim would be, to be able to mathematically model the distribution of current in the radius of the wire, which consists of the applications of the Maxwell equation and solving zeroth order differential Bessel equations of the first kind. The next aim would be to computationally plot out the desired current readings as the depth of the wire increases from the surface, using the Matlab software. The third aim that I have would be conducting an experiment, …
Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks
Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks
The International Student Science Fair 2018
We have innovated “The Energy Conversion System for Travelers” or the ECoST. With the fact that most travelers have wheeled cabin-bags, whilst walking, the wheels will rotate so why don’t we harvest electricity from this kinetic energy? We thus install our innovation, the ECoST, to the bag to generate electricity from the spinning wheels. The electricity is then kept in the storage unit and ready to charge your empty battery devices in an emergency case via a USB port. To make life easy, our ECoST was designed to replicate the power bank charging method; therefore, we can charge …
Device Characterization Of Solar Inverters, Katelyn Alexandria Bolinsky
Device Characterization Of Solar Inverters, Katelyn Alexandria Bolinsky
EURēCA: Exhibition of Undergraduate Research and Creative Achievement
Solar energy is one of the most significant research thrusts in the modern era. Solar inverters are devices used to convert the DC energy of sunlight into AC energy that can be used on the power grid. Typically, they contain silicon; however, new substances such as silicon carbide and gallium nitride are being tested. These materials could increase the efficiency of solar energy, decrease the overall cost, and are potentially more durable than silicon. In order to determine if these new substances can actually benefit the solar industry, they need to be characterized for different attributes with different parameters. As …
Human Following Using Kinect V2, Nate J. Titus, Tori M. Handley, Josiah D. Watson
Human Following Using Kinect V2, Nate J. Titus, Tori M. Handley, Josiah D. Watson
The Research and Scholarship Symposium (2013-2019)
With the emergence of continuously improving imaging and image processing technologies comes the challenge of applying those technologies to create robots that can make navigational decisions based on visual inputs. In this project, a human-following robot is designed and implemented using the Microsoft Kinect v2 system for PC. This system feeds the robot both color and depth information from the environment in front of it, allowing it to navigate obstacles and follow a specific user. The Kinect is used to find the user’s location with respect to the robot, based primarily on what the user is wearing and where the …
Measurement Of Speed Of Sound Profile Using Laaces Balloon, Zhuang Li, Brett Schaefer, Brian Schaefer, William Dever, Tyler Morgan, Matthew Foltz
Measurement Of Speed Of Sound Profile Using Laaces Balloon, Zhuang Li, Brett Schaefer, Brian Schaefer, William Dever, Tyler Morgan, Matthew Foltz
2017 Academic High Altitude Conference
The goal of this mission is to test the speed of sound at different altitudes and ultimately at a maximum height of 100,000 feet (30 km). In conjunction with this testing, environmental parameters including temperature, pressure, and humidity are measured and used to calculate the speed of sound to compare to the measured results. The team constructed the payload “Dorothy” using polystyrene foam due to its lightweight and thermal isolation property. An ultrasonic sensor with a reflection mirror were installed outside payload box to measure speed of sound. All the sensors were calibrated. Software for the project was developed in …
Multiple Camera Control Using An Octaplexer In A 5.8 Ghz Video System, Uciel Garcia Olmedo, Skylar Tamke
Multiple Camera Control Using An Octaplexer In A 5.8 Ghz Video System, Uciel Garcia Olmedo, Skylar Tamke
2017 Academic High Altitude Conference
One of the greatest challenges with camera systems on High-Altitude Balloons (HAB) is to control the direction that they point. This is because the payload boxes constantly rotate during the flight. While mechanical gambles are normally used, an electronic gambled was designed using multiple cameras and a series of multiplexers. The design consists of 8 version 1 pi cameras, connected through a series of multiplexers and interfacing with an IMU to tell the direction the cameras are facing. This design attaches to the Raspberry Pi through the GPIO pins. The multiplexers turn on the camera facing the orientation desired and …
Placing A High-Altitude Balloon In The Path Of Totality, Nicholas Jordan, Christopher Helmerich
Placing A High-Altitude Balloon In The Path Of Totality, Nicholas Jordan, Christopher Helmerich
2017 Academic High Altitude Conference
The UAH Space Hardware Club had conducted 70 flights prior to the Eclipse. In this time, we have gained valuable skills and experience which we have put into practice and passed on through the years. We put these skills into practice for the Eclipse. Our first challenge was finding where to launch. We started out by looking for suitable locations inside totality. We also examined a map of totality at 80,000 ft. We then ran predictions based on past weather during that time of year. By compiling multiple past predictions, we eliminated possible launch sites. We had multiple payloads, some …
Parallel Computation Using Mems Oscillator-Based Computing System, Xinrui Wang, Ilias Bilionis, Salar Safarkhani
Parallel Computation Using Mems Oscillator-Based Computing System, Xinrui Wang, Ilias Bilionis, Salar Safarkhani
The Summer Undergraduate Research Fellowship (SURF) Symposium
In recent years, parallel computing systems such as artificial neural networks (ANNs) have been of great interest. In these systems which emulate the behavior of human brains, the processing is carried out simultaneously. However, it is still a challenging engineering problem to design highly efficient hardware for parallel computing systems. We will study the properties of networks of Microelectromechanical System (MEMS) oscillators to explore their capabilities as parallel computing infrastructure. Furthermore, we simulate the time-variant states of MEMS oscillators network under various initial conditions and performance of certain tasks. Recent theoretical results show that networks of MEMS oscillators have some …
Design A Continuously Tunable Microwave Filter With A Generalized Constant And Frequency Mapping Technique, Josh Shao, Runqi Zhang, Dimitrios Peroulis
Design A Continuously Tunable Microwave Filter With A Generalized Constant And Frequency Mapping Technique, Josh Shao, Runqi Zhang, Dimitrios Peroulis
The Summer Undergraduate Research Fellowship (SURF) Symposium
As the demand for agile and accurate communication increases, the fundamental of communication must be improved to support the needs. Current communication operates on an agreement, that each network company pays government to get licensed a range of frequency on the spectrum, and no others are legally allowed to use. This allows a limited number of users to operates at the same time. As the number of users increase, the spectrum become congested and user experience problem like dropping call. This problem can be solved, if users can be shifted between different licensed frequencies, depending on the capacity of the …
Ocean Renewable Power Company, James Donegan
"Feasibility Of Efficient Photovoltaics In Eastern Kentucky" / "Developing A 3-D Printed Solar Vehicle With Computational Fluid Dynamics (Cfd) Simulator", Adam N. Stanley, Matthew R. Hezseltine
"Feasibility Of Efficient Photovoltaics In Eastern Kentucky" / "Developing A 3-D Printed Solar Vehicle With Computational Fluid Dynamics (Cfd) Simulator", Adam N. Stanley, Matthew R. Hezseltine
Posters-at-the-Capitol
Abstract 1
Feasibility of Efficient Photovoltaics in Eastern Kentucky
Photovoltaics (PV-also called solar photovoltaic devices) are used to harness the power of the sun via the electronic process that occurs within semiconductor cells. The solar energy is absorbed by the cells, which causes the electrons to break away from their atoms, allowing them to flow within the material to produce electricity. This electricity will become the renewable energy for Kentucky, as the generation of coal will but come to a stop within the near future. Like Denmark who is running on 100% renewable generation we must stride to become fully …
Mechanical Design And Optimization Of An Interactive Animatronic Bald Eagle, Eric Burns
Mechanical Design And Optimization Of An Interactive Animatronic Bald Eagle, Eric Burns
Phi Kappa Phi Research Symposium (2012-2016)
Animatronics is a specialized sub-category of mechatronics, a fusion of mechanical and electrical engineering. The field has grown from small, individual projects into a major industry. As animatronics progress, mechanical engineers are pushed to design internal structures which occupy ever-decreasing spaces and to ensure designs can undergo maintenance and modifications smoothly. This research investigates methods of reducing space required for mechanisms and several other beneficial methods of development as well as varying satisfactions for audiences when exposed to actor-controlled systems rather than pre-scripted functions. The mechanical systems are designed using CAD software available at Georgia Southern. On-campus, resources are used …
Atomistic Configuration Interaction Simulation Tool For Semiconductor Based Quantum Computing Devices, Jingbo Wu, Archana Tankasala, Jim Fonseca, Rajib Rahman, Gerhard Klimeck
Atomistic Configuration Interaction Simulation Tool For Semiconductor Based Quantum Computing Devices, Jingbo Wu, Archana Tankasala, Jim Fonseca, Rajib Rahman, Gerhard Klimeck
The Summer Undergraduate Research Fellowship (SURF) Symposium
Solid-state devices are promising candidates for quantum computing applications due to obvious advantages in compatibility with semiconductor fabrication technologies and the extremely long coherent times of electron and nuclear spins in these devices. In such devices, electron interactions are crucial for single and two qubit gate operations. Thus it is essential to evaluate these electron-electron interactions accurately for precise qubit control. It is shown that Atomistic Configuration Interaction can be used to accurately determine electron-electron interactions in realistic semiconductor quantum computing devices. In this work, an online simulation tool on Atomistic Configuration Interaction has been implemented and published on nanoHUB.org, …
A Compact System For Photon Counting Based On Silicon Photomultiplier, Youngwoo Cho, Youngkee Jung, Euiwon Bae
A Compact System For Photon Counting Based On Silicon Photomultiplier, Youngwoo Cho, Youngkee Jung, Euiwon Bae
The Summer Undergraduate Research Fellowship (SURF) Symposium
A compact and portable detection system is necessary to measure the amount of pollutant from environmental sample by detecting and quantifying the light emitted by bioluminescent reporters. This silicon photomultiplier based project is hoping to acquire even more accurate data at a far lower light level than previously developed smartphone based system. After pre-amplification and comparator, the signal is separated from the internal noise present in the overall circuit. Next, the microcontroller counts the number of pulses generated by the comparator in a set amount of time and transfers the data to the Bluetooth module for the smartphone to receive …
Life Alert System For Vulnerable Adults Who Live Alone, Bohyun Ahn
Life Alert System For Vulnerable Adults Who Live Alone, Bohyun Ahn
Undergraduate Research Symposium
As medical technology and the standard of living have improved, the number of vulnerable adults who live alone has increased. Asking for help themselves may be impossible if they have a medical or life issue. Some accidents may go unnoticed for individuals living alone. When accidents regarding vulnerable adults occur, it may take days or weeks to become known by family or neighbors. To solve this problem, a life alert system was designed for vulnerable adults in their homes. To demonstrate the system, A fusion of different sensors were set up in a booth to detect the user’s motion over …
Simulating Nanowires And Ultra-Thin Body Transistors Using Nemo5 On Nanohub.Org, Liang Yuan Dai, James E. Fonseca, Chu Yuan Chen, Gerhard Klimeck
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 …
Integrating Systems For Liquid/Substrate Characterization And Functional Printing, Jianyi Du, J. William Boley, Rebecca K. Kramer
Integrating Systems For Liquid/Substrate Characterization And Functional Printing, Jianyi Du, J. William Boley, Rebecca K. Kramer
The Summer Undergraduate Research Fellowship (SURF) Symposium
Gallium-Indium alloys are recently applied in fabricating soft devices, such as stretchable sensors, electric circuits, micro pumps and optics. Its printability demonstrates the possibility for a wide extension of the application. Current fabrication methods are inefficient when printing is most handled manually, and are highly dependent on material properties. There is need for a fast way to characterize material properties, and to functionally print the given shape on the substrate. This paper presents the construction of an efficiently integrated system with optical imaging and functional printing for Gallium-Indium alloys. The imaging section allows for characterization of material properties to fast …
Modeling Thermophotovoltaic Rare Earth Based Selective Emitters, Anubha Mathur, Enas Said Sakr, Peter Bermel
Modeling Thermophotovoltaic Rare Earth Based Selective Emitters, Anubha Mathur, Enas Said Sakr, Peter Bermel
The Summer Undergraduate Research Fellowship (SURF) Symposium
Thermophotovoltaic (TPV) devices convert heat to electricity using thermal radiation to illuminate a photovoltaic (PV) diode. Typically, this radiation is generated by a blackbody-like emitter. Such an emission spectrum includes a broad range of wavelengths, but only higher energy photons can be converted by the PV diode, which severely limits efficiencies. Thus, introducing a selective emitter and filter to recycle unwanted photons could potentially greatly enhance performance. In this work, we consider a rare earth-doped selective emitter structure to increase the number of photons emitted above the bandgap of the photovoltaic (PV) cell, while minimizing the total power emitted below …
The Smart Clock, Cory Koehler, Addison Loda, Hannah Posey-Scholl, Isak Rask
The Smart Clock, Cory Koehler, Addison Loda, Hannah Posey-Scholl, Isak Rask
PSU High School Innovation Challenge
Modern technology continues to change and improve constantly as people find ways to make things faster, smaller, and better - but these changes often leave the elderly behind. This year’s Innovation Challenge asked groups to focus on how to create and improve technology geared towards the aging generations. For our initial research, the Grant High School team and mentors visited an elderly care center and interviewed a few of the residents, asking what types of technology currently improve their lives, and what types of technology could potentially improve their lives.
The Problem: After the interviews, we were able to identify …
Silver Oxide-Graphene Sensor For Hydrogen Peroxide, Austin D. Scherbarth, L Stanciu
Silver Oxide-Graphene Sensor For Hydrogen Peroxide, Austin D. Scherbarth, L Stanciu
The Summer Undergraduate Research Fellowship (SURF) Symposium
A nonenzymatic, amperometric sensor for Hydrogen Peroxide (H2O2) was designed by drop coating glassy carbon electrodes (GCEs) with Silver Oxide (Ag2O). Combining Ag2O with Graphene Oxide and a polymer, PEDOT, was also attempted in order to increase stability and electrochemical properties. Using metal oxides along with Graphene Oxide for sensors has been done quite a bit, but Ag2O itself has not been research extensively. So, in order to produce the best H2O2 sensor, the configuration of all components had to be optimized. Three different Ag2O …
2-Dimensional Personal Motion Energy Harvester For Low Power Electronics, Manuel Gutierrez, Sean Scott, Dimitrios Peroulis
2-Dimensional Personal Motion Energy Harvester For Low Power Electronics, Manuel Gutierrez, Sean Scott, Dimitrios Peroulis
The Summer Undergraduate Research Fellowship (SURF) Symposium
In a lab, it becomes crucial to have a way to monitor that lab workers aren’t exposed to too much radiation. Such a device that detects this should have an energy harvester so that batteries aren’t required. The need for an energy harvester that generates power from a user’s movements in 2 dimensions is needed. This energy harvester is needed to power a radiation monitor. An energy harvester that generates power based off movements in 2 dimensions was developed. The energy harvester was created through a series of prototypes. Each prototype was built from a CAD drawing and a stereolithography …
Comparative Study Of Artificial Lighting Systems With Different Fixtures Considering Daylight Availability, Leticia Niero Moraes, Anderson Claro
Comparative Study Of Artificial Lighting Systems With Different Fixtures Considering Daylight Availability, Leticia Niero Moraes, Anderson Claro
CIBSE & SLL International Lighting Conference, Dublin, 2013
The use of daylight is indicated as a primary factor in energy savings of buildings, since it can reduce the use of electric lighting through control systems. However, the efficiency of systems is also associated with technical characteristics and performance of various elements. The positioning of fixtures, as well as its specifications can contribute for environmental comfort and energy conservation. Such concerns, however, are not part of the currently established practice of lighting design professionals. Considering this gap, this paper seeks to develop a study that addresses the integration of natural and electric light. The methodology is based on evaluating …