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Filtering by: Creator Johnston, Alberta B. Remove constraint Creator: Johnston, Alberta B. Academic Affiliation Electrical Engineering and Computer Science Remove constraint Academic Affiliation: Electrical Engineering and Computer Science Peer Reviewed No Remove constraint Peer Reviewed: No

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  • 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

  • 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

  • CMOS-Integrated Single-Element Thermal Flow Sensors

    Creator:
    Clocker, Kyle
    Abstract:
    Flow rate sensors for in situ gas or liquid monitoring typically comprise multiple transducer elements, including a heater and one or more temperature sensors to measure the rate of heat energy removal by the flowing fluid. The need for multiple transducer elements limits feasibility of shrinking these sensors to microfluidic...
    Resource Type:
    Masters Thesis
    Full Text:
    -Integrated Single-Element Thermal Flow Sensors Abstract approved: Matthew L. Johnston Flow rate sensors

  • Imepdance Sensing Techniques for Integrated Circuits Sensor Applications

    Creator:
    Shen, Boyu
    Abstract:
    Impedance measurements are increasingly demanded in modern CMOS sensing systems as impedance is the most common electrical signal obtained from sensors, delivering physical, chemical and biomedical quantity changes. Impedance sensing for wide interested frequency, broad dynamic range, and various sensor interfaces has numerous challenges, especially targeted in CMOS miniaturization with...
    Resource Type:
    Dissertation
    Full Text:
    : Matthew L. Johnston Impedance measurements are increasingly utilized in modern integrated circuit

  • CMOS Transducers and Programmable Interface Circuits for Resource-Efficient Sensing Applications

    Creator:
    Sengupta, Shaan
    Abstract:
    Modern sensors are complex systems comprising multiple sub-systems such as transducers, analog and mixed-signal interface circuits, digital processing circuits, and packaging. Over the last few decades, innovations in these sub-systems combined with their increased integration in complementary metal-oxide semiconductor (CMOS) processes have led to the rapid growth in sensors for...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: Matthew L. Johnston Modern sensors are complex systems comprising multiple sub-systems

  • Co-planar integration of silicon integrated circuits and microfluidic networks for biosensor applications

    Creator:
    Lindsay, McKay W.
    Abstract:
    Silicon integrated circuit (IC) technology has enabled numerous electrical and optical sensors used in biological and chemical assays, where they can increase performance while decreasing cost and size compared to traditional detectors. There is significant potential to further leverage IC technology for lab-on-chip applications, creating affordable and portable medical diagnostic...
    Resource Type:
    Masters Thesis
    Full Text:
    Applications Abstract approved: Matthew L. Johnston Silicon integrated circuit (IC) technology has enabled

  • Development of a Collision Detection Module for Avian and Bat Species on Wind Turbine

    Creator:
    Davis, Cassandra L.
    Abstract:
    Renewable energy technology continues to grow in popularity as countries aim to reduce greenhouse gas emissions. Land based and offshore wind turbines are one option for expanding renewable energy sources. However, as wind energy adoption increases, so does the need for enhanced monitoring of wind turbines’ potential effect on local...
    Resource Type:
    Capstone Project
    Full Text:
    receives input from the Raspberry Pi 3 B+ to allow for variable gain from 1 V/V to 64 V/V. The third