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Filtering by: Creator Cheng, Li-Jing Remove constraint Creator: Cheng, Li-Jing Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Quantum dot plasmon coupling : Fundamental study and applications

    Creator:
    Kannegulla, Akash
    Abstract:
    The dissertation focuses on the engineering of light-matter interaction using plasmonic nanoparticles and metamaterials to achieve enhanced luminescence and based on which to improve the performance of biosensing and light-emitting technologies. We designed and fabricated a spectrum of nanostructures to exhibit particular dispersion relations capable of controlling the spontaneous emission...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: ______________________________________________________ Li-Jing (Larry) Cheng

  • Printed Nanocomposite Devices and Flexible Electronics for Humidity Sensing

    Creator:
    Ajithkumar, Amritha
    Abstract:
    The thesis focuses on the development of a novel printed resistive humidity sensor and integrated flexible electronics for an RFID-enabled humidity sensing platform. We explored a hybrid nanocomposite material for humidity sensing consisting of carbon nanomaterials, conductive polymer and cellulose polymer that undergoes resistance change in response to humidity change....
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Li-Jing Cheng The thesis focuses on the development of a novel printed resistive

  • Quantum dots-fullerene based molecular beacons for highly sensitive DNA detection

    Creator:
    Liu, Ye
    Abstract:
    We demonstrated a low-cost and high-sensitivity DNA detection method using quantum dot-fullerene based molecular beacons (MBs) and magnetic nanoparticles. The MB tethered magnetic nanoparticles can be well dispersed in analytes for efficient DNA capture and concentrated by an external magnetic field for enhanced fluorescence signal detection. The detection requires only...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ______________________________________________________ Li-Jing Cheng We

  • Nanostructured Optical Devices for Biosensing Applications

    Creator:
    Chalishazar, Vishvas
    Abstract:
    We demonstrated a sensitive biosensor based on plasmonic metal composite nanostructures. The device can be fabricated and duplicated with ease using a novel nanoprinting technology which allows precise transfer of metal nanostructures without complicated lithography processes. The design featured by its unique material composition and sub-wavelength structures maximizes the exposure...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Li-Jing Cheng We demonstrated a sensitive biosensor based on plasmonic metal

  • Non-enzymatic electrochemical sensors based on functionalized nanomaterials

    Creator:
    Wu, Bo
    Abstract:
    Unlike other biosensing, electrochemical biosensor has the advantages of robustness, easy miniaturization, excellent detection limits, and capability in handling small analyte volumes. The detection selectivity of the electrochemical biosensors is mainly supported by bioreceptors. However, these receptors always suffer from the performance variation caused by the environment and the thermal-...
    Resource Type:
    Dissertation
    Full Text:
    approved: _________________________________________________________________ Li-Jing (Larry) Cheng

  • Point-of-care and wearable sensors for non-invasive stress hormone detection with molecularly imprinted techniques

    Creator:
    Yeasmin, Sanjida
    Abstract:
    Rapid and sensitive detection of stress hormones, such as cortisol and dehydroepiandrosterone (DHEA), can benefit the diagnosis of diseases related to adrenal gland disorders, post-traumatic stress disorders, chronic fatigue syndrome, and more. Stress hormones fluctuate in a circadian rhythm, the highest in the early morning and the lowest at night;...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Li-Jing (Larry) Cheng Rapid and sensitive detection of stress hormones, such as cortisol

  • Design, Fabrication and Characterization of Narrowband Aluminum Plasmonic Grating Filter Array for Spectroscopy in Visible Light Range

    Creator:
    Shashi, Farzana Hasan
    Abstract:
    Metal grating based plasmonic filters are widely researched for their unique properties of field enhancement and localization of light beyond diffraction limit. However, the plasmonic grating filters reported in literature mostly have broadband outputs making them unsuitable for spectroscopy. In this project, we have designed, fabricated, and characterized an array...
    Resource Type:
    Capstone Project
    Full Text:
    prudent advices. I would also like to thank my committee members, Dr. Li-Jing Cheng and Dr. Matthew

  • Integrating Microfluidics and Integrated Circuits toward a CMOS-Based Cell Counter

    Creator:
    Bishop, Kevin W.
    Abstract:
    Cell counting is a key tool used in biological and clinical laboratories, but at present, commercial cell counters are large and expensive. CMOS technology is a promising platform for creating small, low-cost sensors but currently lacks a robust method of directly interfacing these sensors with the microfluidic networks needed for...
    Resource Type:
    Honors College Thesis
    Full Text:
    _____________________________________________________________________ Li-Jing Cheng, Committee Member, representing Electrical & Computer Engineering

  • 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:
    APPROVED: Matthew L. Johnston, Mentor, representing Electrical Engineering & Computer Science Larry Cheng

  • 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