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Articles 1 - 13 of 13
Full-Text Articles in Engineering
The Field-Programmable Gate Array Design Of The Gridded Retarding Ion Distribution Sensor, Anthony P. Swenson
The Field-Programmable Gate Array Design Of The Gridded Retarding Ion Distribution Sensor, Anthony P. Swenson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Mankind's ability to predict weather on earth has been greatly enhanced by new instrumentation technology. Similarly, mankind's ability to predict space weather benefits from new technologies. Just as increasing the amount of atmospheric measurements on earth heightened mankind's ability to predict Earth weather, many scientists expect that expanding the amount of plasma measurements in space could be key to enhancing mankind's ability to predict space weather. Small satellites are one of these new technologies that have the potential to greatly enhance our ability to predict space weather. Utilizing many low-cost small satellites allows scientists to take data from more locations …
Synthesis And Characterization Of Glycidyl Methacrylate-Based Graft Copolymer Functional Interfaces, Nikolay Brordinov
Synthesis And Characterization Of Glycidyl Methacrylate-Based Graft Copolymer Functional Interfaces, Nikolay Brordinov
All Dissertations
Modification of materials properties such as surface energy, wettability, ability to absorb, contain or release specific type of chemicals enables practical application of these materials in various scientific and engineering set-ups. However, designing protocol that could be easily adapted for different situations and simultaneously unlock multiple variations of the resulting properties is a non-trivial task. This dissertation is devoted to application of glycidyl methacrylate-based graft copolymers for the purposes of surface modification, establishing fundamental trends and dependencies of this process and exploring the possible range of applications. These materials have extremely valuable property to undergo controllable post-synthetic modifications including surface …
Robust Odorant Recognition In Biological And Artificial Olfaction, Nalin Katta
Robust Odorant Recognition In Biological And Artificial Olfaction, Nalin Katta
McKelvey School of Engineering Theses & Dissertations
Accurate detection and identification of gases pose a number of challenges for chemical sensory systems. The stimulus space is enormous; volatile compounds vary in size, charge, functional groups, and isomerization among others. Furthermore, variability arises from intrinsic (poisoning of the sensors or degradation due to aging) and extrinsic (environmental: humidity, temperature, flow patterns) sources. Nonetheless, biological olfactory systems have been refined over time to overcome these challenges. The main objective of this work is to understand how the biological olfactory system deals with these challenges, and translate them to artificial olfaction to achieve comparable capabilities. In particular, this thesis focuses …
Water Leak Detection System, Ryan T. Hanson
Water Leak Detection System, Ryan T. Hanson
Electrical Engineering
The water supply shortage has increased in recent years due to overpopulation, climate change and obsolete water facilities, where deteriorated pipes cause most of the water leaks. The problem is not the size of the leak, but the time it takes to detect it. This paper presents the implementation of a system installed in the hydraulic facilities of a residence, to detect water leaks. The system consists of a water sensor installed by a water reservoir of interest, a microprocessor to interpret the data and evaluate whether it is a water leak or not, an SMS alert message, and an …
Seestar Iii Sensor Module, Matthew M. Ducasse
Seestar Iii Sensor Module, Matthew M. Ducasse
Electrical Engineering
SeeStar is an autonomous, underwater camera system for observing aquatic environments. The Monterey Bay Aquarium Research Institute (MBARI) developed SeeStar to provide a low cost solution for marine researchers wishing to observe underwater ecosystems over long durations. The system consists of completely open-source designs featuring only common, commercially available components. This means users may purchase the components and build the system themselves. While MBARI originally intended for the system to simply capture photo and video data, many customers have requested additional sensors to gather contextual data to complement the captured images. The latest generation, SeeStar III, features a sensor module, …
Light Sensing Automated Blinds, Andrew B. Hodges, Ryan C. Flick
Light Sensing Automated Blinds, Andrew B. Hodges, Ryan C. Flick
Electrical Engineering
This project is solving the problem of wasted energy within buildings and homes, because currently the lights turned on inside building do not utilize natural, ambient light from the sun. Rather than having unnecessary light from a light source, the automated light sensing smart blinds can sense the amount of light outside the window and in the room, and then adjust the angle of the blinds to save energy by utilizing the available outdoor light. This way, the light source will not be running at maximum power output while there is excess light coming through the window. This project aims …
The Development Of A Partial Flow Sensor For Tiles, Richard Mcever
The Development Of A Partial Flow Sensor For Tiles, Richard Mcever
Chancellor’s Honors Program Projects
No abstract provided.
Dispositivo Electrónico Para La Medición De Temperatura Y Humedad Del Suelo, Sergio Alejandro Vaca Vargas, Esteban Serrano Vivas
Dispositivo Electrónico Para La Medición De Temperatura Y Humedad Del Suelo, Sergio Alejandro Vaca Vargas, Esteban Serrano Vivas
Ingeniería en Automatización
El presente documento se describe un proyecto de investigación, el cual fue realizado para el Instituto de Hidrología, Meteorología y Estudios Ambientales IDEAM, donde se implementó una metodología de ingeniería inversa encaminada a la aplicación de tecnologías propias para la generación de un nuevo dispositivo capaz de realizar la medición de temperatura y humedad del suelo, partiendo del diseño del circuito electrónico, pasando por la simulación y llegando finalmente hasta la disposición de los componentes electrónicos sobre una placa de circuito impreso (PCB), todo lo anterior basándose en un equipo existente para la identificación de componentes electrónicos, curvas de comportamiento, …
Process Development And Characterization Of Smart Parts Fabricated Using Powder Bed Fusion Additive Manufacturing Technologies, Mohammad Shojib Hossain
Process Development And Characterization Of Smart Parts Fabricated Using Powder Bed Fusion Additive Manufacturing Technologies, Mohammad Shojib Hossain
Open Access Theses & Dissertations
The fields of modern energy conversion, e.g., fossil fuel, natural gas, and coal power plants, are in increased need of health monitoring and data collection (temperature, pressure, and flow rate) to improve process efficiency and satisfy the demand for clean energy. In situ process monitoring can lead to a robust automated system to achieve the goal. The monitoring equipment or sensors in energy systems components (e.g., pressure tube, turbine blade, and fuel injector) undergo high temperature, high pressure, and corrosive environments; for example, combustion inlet conditions can reach up to 810 K and 2760 kPa [1]. Therefore, a reliable, accurate, …
Development Of A Nonlinear Model For The Prediction Of Response Times Of Glucose Affinity Sensors Using Concanavalin A And Dextran And The Development Of A Differential Osmotic Glucose Affinity Sensor, Louis G. Reis
Doctoral Dissertations
With the increasing prevalence of diabetes in the United States and worldwide, blood glucose monitoring must be accurate and reliable. Current enzymatic sensors have numerous disadvantages that make them unreliable and unfavorable among patients. Recent research in glucose affinity sensors correct some of the problems that enzymatic sensors experience. Dextran and concanavalin A are two of the more common components used in glucose affinity sensors. When these sensors were first explored, a model was derived to predict the response time of a glucose affinity sensor using concanavalin A and dextran. However, the model assumed the system was linear and fell …
Low-Temperature Fabrication Process For Integrated High-Aspect Ratio Metal Oxide Nanostructure Semiconductor Gas Sensors, William Paul Clavijo
Low-Temperature Fabrication Process For Integrated High-Aspect Ratio Metal Oxide Nanostructure Semiconductor Gas Sensors, William Paul Clavijo
Theses and Dissertations
This work presents a new low-temperature fabrication process of metal oxide nanostructures that allows high-aspect ratio zinc oxide (ZnO) and titanium dioxide (TiO2) nanowires and nanotubes to be readily integrated with microelectronic devices for sensor applications. This process relies on a new method of forming a close-packed array of self-assembled high-aspect-ratio nanopores in an anodized aluminum oxide (AAO) template in a thin (2.5 µm) aluminum film deposited on a silicon and lithium niobate substrate (LiNbO3). This technique is in sharp contrast to traditional free-standing thick film methods and the use of an integrated thin aluminum film …
Microfluidic Enhanced Fabry-Perot Etalon Based Optical Biosensor For The Detection Of Biological Substances In Liquid With Refractive Index Measurement, Nezam Uddin
Electronic Theses and Dissertations
A new microfluidic optical biosensor was demonstrated for refractive index measurements with high sensitivity and accuracy in the range of few micrometers liquid channels utilizing a Fabry-Perot cavity formed between two reflective semitransparent surfaces. The transmitted light through the cavity forms interference peaks in the transmission spectrum which is dependent upon the refractive index of the fluid in the microfluidic channel. We demonstrate the biosensor using Fabry-Perot to provide high accuracy and sensitivity with real-time measurement. The sensor can resolve refractive index changes with the shift of peak wavelength of transmitted spectrum. In our Fabry- Perot etalon based biosensor, two …
Implantable Wireless Sensor Networks: Application To Measuring Temperature For In Vivo Detection Of Infections, Praharsh Madappaly Veetil
Implantable Wireless Sensor Networks: Application To Measuring Temperature For In Vivo Detection Of Infections, Praharsh Madappaly Veetil
Dissertations, Master's Theses and Master's Reports
It is has been proven that infection in the body cause a local temperature increase due to localized inflammation. Therefore, a method to provide early diagnostic or long-term tracking of this infection will provide great benefits to patients with diabetic foot ulcers or sickle cell disease, and those receiving hemodialysis where they suffer from a weakened immune system. The goal of this project is to develop an implantable wireless temperature sensor based on a wireless sensor network system for monitoring infections in situ. The analog signals from the thermistors are digitized and wirelessly transmitted to a computer with an ez430-rf2500 …