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Filtering by: Creator Johnston, Alberta B. Remove constraint Creator: Johnston, Alberta B. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Prototyping of Thermoelectric Energy Harvesting Circuitry for IoT Devices

    Creator:
    Webb, Derek
    Abstract:
    Due to the advancement of incredibly low power microcontrollers and small form factor integrated circuits, energy harvesting can be considered as an alternative, low power source for remote ocean sensing and measurements. To demonstrate the effectiveness of harvesting thermoelectric energy contained in the temperature differential between ocean surface water and...
    Resource Type:
    Honors College Thesis
    Full Text:
    Circuitry for IoT Devices Abstract approved: Matt Johnston Due to the advancement of incredibly low power

  • Design and Modeling Techniques for Impedance Based Flow Cytometry

    Creator:
    Dawes, Jacob
    Abstract:
    Microfluidic devices have enabled lab-on-a-chip (LOC) systems that allow for complex sample analysis and preparation in a compact form factor. One technology that may benefit from a microfluidic approach and further miniaturization is flow cytometry. Flow cytometry is an analysis technique for enumerating and characterizing populations of cells; this is...
    Resource Type:
    Masters Thesis
    Full Text:
    Modeling Techniques for Impedance-Based Flow Cytometry Abstract approved: Matthew Johnston Microfluidic

  • Wireless Multi-Sensor Patch for Wind Turbine Impact Detection

    Creator:
    Wilson, Calder
    Abstract:
    Bird and bat collisions with wind turbines are a problem that needs to be better quantified for its impact to be fully understood. This thesis documents portions of the design of a sensor patch module for use on wind turbines blades to detect impacts caused by birds and bats. This...
    Resource Type:
    Honors College Thesis
    Full Text:
    Detection Abstract approved: Matthew Johnston Bird and bat collisions with wind turbines are a problem

  • Viability of Single-Photon Avalanche Diodes for use in Pulse Oximetry

    Creator:
    Bialek, Hayden
    Abstract:
    Pulse Oximetry is a technology used ubiquitously across the medical field for measuring oxygen saturation and heart rate monitoring. In this project a system was developed to use a new technology for pulse oximetry: single-photon avalanche diodes (SPADs). This work outlines the development process and experimental results of a SPAD...
    Resource Type:
    Honors College Thesis
    Full Text:
    for use in Pulse Oximetry Abstract approved: Matthew Johnston Pulse Oximetry is a technology used

  • Evaluating TEG Energy Harvesting Capabilities Across Naturally Occurring Temperature Gradients

    Creator:
    Estenson, Alyssa H.
    Abstract:
    Thermoelectric generators (TEGs) have gained much popularity in the search for alternatives to clean sources to harvest energy. Given their capability to harness an electric potential given a temperature differential across their opposing faces, and the foreseeable prevalence of naturally and/or commonly occurring temperature gradients in multiple applications, TEGs are...
    Resource Type:
    Honors College Thesis
    Full Text:
    , 2021. doi: 10.1109/JSSC.2020.3042962. [6] S. Bose, B. Shen, and M. L. Johnston, “A batteryless motion

  • Design, Layout, and Testing of a Printed Circuit Board for Cyclic Voltammetry

    Creator:
    Harper, Karen
    Abstract:
    This project concerns the design, layout, assembly, debugging, and testing of a Printed Circuit Board (PCB) that autonomously, reliably, and effectively conducts Cyclic Voltammetry (CV) measurements. CV is an electrochemical procedure done to analyze, quantize, and visualize reversible reduction-oxidation reactions, often used in medical devices to monitor the levels of...
    Resource Type:
    Honors College Thesis
    Full Text:
    Board for Cyclic Voltammetry Abstract approved: Matthew Johnston This project concerns the design

  • Energy Harvesting and Power Management Integrated Circuits for Self-Sustaining Wearables

    Creator:
    Bose, Soumya
    Abstract:
    Harvesting energy from ambient sources can provide power autonomy to energy efficient electronics and sensors. The last decade has seen a multitude of ways to scavenge energy from various sources like solar, thermal, electromagnetic, electrostatic, piezo-electric and many more. Thermal energy from human body heat is ubiquitous and can be...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Matthew L. Johnston Harvesting energy from ambient sources can provide power autonomy

  • New Architectures and Circuits for Pushing the Dynamic Range and Multiplexing Boundaries of CMOS-Integrated Sensors

    Creator:
    Ouh, Hyunkyu
    Abstract:
    Over the last decades, CMOS-integrated sensors have made impressive progress in performance, form-factor, and energy-efficiency for various applications such as imaging, physical/chemical sensing, bio/health monitoring. In the era of the artificial intelligence (AI) and the internet-of-things (IoT), such CMOS-integrated sensors are essential for massive and comprehensive data acquisition, where sensing...
    Resource Type:
    Dissertation
    Full Text:
    -Integrated Sensors Abstract approved: Matthew L. Johnston Over the last decades, CMOS-integrated sensors

  • New Techniques for Multi-Channel Biosignal Acquisition and Low-Power, Low-Resistance-Measurement Systems

    Creator:
    Kim, Jinyong
    Abstract:
    Dense electrical recording of biosignals has been developed to provide spatial resolution and precise temporal information for health monitoring, diagnostics, and clinical research. However, more electrodes require more wires, and wiring density quickly becomes a limiting factor. To break this bottleneck, we proposed a frequency-division multiplexing (FDM) based architecture for...
    Resource Type:
    Dissertation
    Full Text:
    Systems Abstract approved: Matthew L. Johnston Dense electrical recordings of biosignals has been

  • Highly-Integrated Low-Power RF Receivers for Distributed Sensing and IoT Devices

    Creator:
    Bialek, Hayden
    Abstract:
    Low-power receivers (RX) with 100$\mu W$-scale power consumption can enable several power/energy-constrained IoT applications. However, achieving sensitivity, interferer tolerance and wide operating range with low power presents a challenge for existing architectures, particularly those constrained to highly integrated solutions without high-Q off-chip components. Existing solutions rely heavily on high quality...
    Resource Type:
    Dissertation
    Full Text:
    to thank my advisors Prof. Arun Natarajan and Prof. Matthew Johnston. Prof. Johnston has helped