Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"Electrical impedance spectroscopy"”.
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Microfluidic Electrical Impedance Spectroscopy
… device capable of measuring changes in impedance valuesof microfluidic cell cultures. Tocharacterize this, an interdigitated array of electrodes was patterned over glass, where it was then bonded to a series of fluidic networks created in PDMS via soft lithography. The device measured …
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Development of Multifunctional Electrical Impedance Spectroscopy System for Characterization in Plant Phenotyping
… nutrients and water contents by obtaining the spectroscopy data is essential for plant characterization, and photosynthesis. The conventional optical methods like visible/near-infrared spectroscopy, hyperspectral or multispectral imaging, and optical tomography have been developed and studied …
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Electrical Impedance Spectroscopy with Multi-modal Tissue Discrimination for Ultrasound-Guided Targeted Biopsy
… proposes an instrumented needle probe that uses electrical impedance spectroscopy to identify tissue at the needle tip in real-time, validated on an ex-vivo tissue dataset. Two data augmentation methods are proposed for improving classifiers trained on small datasets. Lastly, the thesis shows the …
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Use of electrical impedance spectroscopy (EIS) for diagnosis and prediction of reproductive status in female swine
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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A low-cost, portable, web-based impedance spectroscope for agricultural applications
Electrical impedance spectroscopy (EIS) is an electrochemical characterization technique widely exploited in the field of chemistry, material science, and biology. EIS characterizes the dynamics of fixed and mobile charge carriers at the electrode-sample interface. It has proved useful in the …
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Microdevices for Investigating Pulsed Electric Fields-Mediated Therapies at Cellular and Tissue Level
… techniques such as fluorescent microscopy and electrical impedance spectroscopy were used to monitor the response of the cell monolayers under investigation. Irreversible electroporation is a new focal ablation therapy based on PEFs that has enabled ablation of tumors in a non-thermal, …
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DEVELOPMENT OF INNOVATIVE SENSORS FOR DETECTING THE WATER STATUS OF PLANTS IN PRECISION AGRICULTURE APPLICATIONS
… complementary approaches were investigated: (i) electrical impedance spectroscopy (EIS) of leaf tissues to characterize physiological and structural changes linked to hydration levels; (ii) optical sensing through near-infrared (NIR) spectroscopy, exploiting absorption variations related to leaf …
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A Study of The Effect of Membrane Targeting Antimicrobial Compounds on Ionic Transport Across Lipid Bilayer Membranes
… reflectometry, dynamic light scattering and electrical impedance spectroscopy and Arrhenius measures of their interactions with tethered bilayer lipid membranes (tBLMs). Through analysing the results obtained from these biophysical techniques, the peptide-membrane interactions of melimine and …
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A Selectivity Study on the Use of Caffeine and Theobromine Imprinted Polypyrrole Surface Electrodes
… pulsed amperometric detection (PAD) and electrical impedance spectroscopy (EIS), for their value as potential detection schemes and 3) to determined the applicability of the molecularly imprinted polypyrrole by analyzing commercial samples of instant coffee and tea and comparing results …
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Micro-impedance cytometry
Electrical impedance spectroscopy is a non-invasive and label free technique that allows for rapid counting and characterisation of particles in suspension based on their response to applied AC potentials. In recent years, lab-on-a-chip technologies have been developed to enable single-cell …
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Dielectric relaxation time spectroscopy for tissue characterisation
This thesis is concerned with Electrical Impedance Spectroscopy (EIS), a noninvasive technique for characterising biological tissue and distinguishing pathology. The thesis is focused on the development of an improved method for extracting physiologically related parameters from the measured …
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Modelling and detection of faults in axial-flux permanent magnet machines
… signature analysis, vibration analysis and electrical impedance spectroscopy are applied. Attention is paid to fault-feature extraction and fault discrimination. Using both frequency and time-frequency techniques, features are tracked in the line current under steady-state and transient …
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Advanced photoanodes for photoassisted water electrolysis
… was derived and its predictions conformed by the electrical conductivity of ilmenite hematite solid solution bulk samples as a function of temperature and oxygen partial pressure. The enthalpies of the Schottky defect formation and the reduction reaction for hematite were determined as 13.4 eV and …
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Synthesis and Characterization of Branched Ionomers for Performance in Ionic Liquid – Swollen Ionic Polymer Transducers
… percolation effects of RuO₂ on the device's electrical properties and actuation characteristics. Equivalent circuit modeling of the component and transducer electrical impedance accurately modeled variations in contributing processes and material interfaces to estimate the evolution of …
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Novel antibody-based biosensors for the detection of haptens, proteins and whole cells
… Included fluorescence, chemiluminescence and impedance-based detection systems. Microtitre plates, polymer chps, fluorescence-enhancement chips and screen-printed electrodes were all examined. The specific targets chosen were Internalin B@dB), an mnvasion-associated proteln of Listerla …
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Diagnostic Accuracy and Reproducibility of Conventional and Novel Caries Detection Methods as Determined by Histology and Micro-CT; A Study<i> In Vitro</i>
… newer device, the CarieScan PRO, which relies on Electrical Impedance Spectroscopy.<br/><br/>Over the last three decades, there has been a revolution in the medical CT technology in parallel with the invention of compact machines such as cone beam CT which can be used in the dental practice by …
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The Development of Real-Time Fouling Monitoring and Control Systems for Reverse Osmosis Membrane Cleaning using Deep Reinforcement Learning
This dissertation investigates potential applications for Machine Learning (ML) and real-time fouling monitors in Reverse Osmosis (RO) desalination. The main objective was to develop a framework that minimizes the cost of membrane fouling by deploying AI-generated cleaning patterns and real-time …
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Electroding Methods for in situ Reverse Osmosis Sensors
… interfacial regions, thus sensor impedance. Platinized polymer graft sensors were shown to be sensitive to protein fouling. Electrodes were characterized by their electrical properties, SEM and XPS. Assembled sensors were evaluated for sensitivity to electrolyte concentration and …
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Impedance spectroscopy for the characterization of swine reproductive states
… examine data acquired from a frequency sweeping electrical impedance spectrometer taking readings from sows in order to potentially determine if the resultant data can be used to predict a sow's date of estrus, date of farrowing, and if the inseminated sow has become pregnant. The frequencies …