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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 121 for “"Spectroscopy (EIS)"”.
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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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Electrochemical impedance modelling of the reactivities of dendrimeric poly(propylene imine) DNA nanobiosensors
… nanobiosensor based on electrochemical impedance spectroscopy. Cyclic voltammetry (CV), differentia pulse voltammetry (DPV), square wave voltammetry (SWV) and electrochemical impedance spectroscopy (EIS) techniques were used to study and model the electrochemical reactivities of the nanomaterials …
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The Effect of Buckling on the Interface Conductance in Flexible Lithium-Ion Batteries
… configurations using electrochemical impedance spectroscopy (EIS). It is demonstrated that with increasing value of curvatures, contact resistances between components can be reduced and contact conductance of LIBs can be enhanced.
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Electrochemical impedance spectroscopy of proton exchange membrane fuel cell stacks
Electrochemical Impedance Spectroscopy (EIS) is applied to a small, four cell Proton Exchange Membrane (PEM) fuel cell stack to examine the stack response as the load current changes. The measured stack response is compared to a simulated response generated by a stack model that has been developed …
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Tissue classification from electric impedance spectroscopy for haptic feedback in minimally invasive surgery
… feedback for surgical robots. Electric impedance spectroscopy (EIS) and a modified surgical needle were successfully able to measure the electric impedance for gel-based phantoms, ex-vivo tissue, and freshly excised organs. Processes for fitting the electric impedance of these tissues to the …
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Development and experimental investigation of direct urea fuel cells
… respectively. The electrochemical impedance spectroscopy (EIS) shows impedance reduction from 30 ohm.cm² at 25°C to 15 ohm.cm² at 65°C, indicating enhanced ionic conductivity and reduced resistance. These findings provide insights for advancing DUHPFC technology.
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Bioparticle capture and sensing utilizing nanograss based microfluidic devices
… candidate for an electrochemical impedance spectroscopy (EIS) based biosensor. Such a sensing device is expected to perform direct sensing quickly with high sensitivity, and at low cost. In this work, the nanograss fabrication process is illustrated in detail. Then nanograss substrate itself …
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A malaria diagnostic system based on electric impedance spectroscopy
… is needed. This work explores electric impedance spectroscopy (EIS) on a microfluidic device as a means of malaria diagnosis. This work introduces a microfabricated probe with microfluidic channel, and a high speed impedance analyzer circuit board. Combination of microfluidic device and circuit …
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Experimental Investigation of the Effect of Composition on the Performance and Characteristics of PEM Fuel Cell Catalyst Layers
… operating conditions, Electrochemical Impedance Spectroscopy (EIS), and Cyclic Voltammetry (CV) are then applied to investigate the cause of the observed variations in performance. The results show that both Nafion and carbon content significantly affect MEA performance. The ohmic resistance and …
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Condition monitoring of lithium-ion batteries using broadband multisine excitation and electrochemical impedance spectroscopy
Electrochemical Impedance Spectroscopy (EIS) is a well-known technique that has been employed on various electrochemical cells to obtain their impedance spectra. Lithium-ion(Li-ion) cells are some of the cells to which it has been applied. The impedance spectra obtained from EIS can be used to …
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Oxygen reduction on platinum : an EIS study
… (YSZ) is examined via electrochemical impedance spectroscopy (EIS) for oxygen partial pressures between 10-4 and 1 atm and at temperatures between 475 and 700°C. Use of photolithographic techniques in electrode fabrication renders a precise geometry of the Pt electrodes. Circular electrode design …
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Stability of double perovskite cathodes under high humidity for solid oxide fuel cells
… exposure using XRD to probe the bulk and Raman Spectroscopy to probe the surface. SEM was also used to characterize any morphological changes during the exposure. Second, electrochemical impedance spectroscopy (EIS) was used to monitor the long-term performance of symmetric cells under various …
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Jednoduchý elektrochemický DNA biosenzor pro detekci poškození DNA způsobeného UV zářením
… voltammetry (CV) and electrochemical impedance spectroscopy (EIS), as non-direct methods, using redox-active indicator [Fe(CN)6]4-/3- . CV and EIS, which allow characterization of electrode surface, were used to optimize preparation of the dsDNA/UTGE biosensor. Prepared dsDNA/UTGE biosensor was …
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Structure of cathode-electrolyte interfaces and correlation with ionic conductivity in Solid Oxide Fuel Cell devices
… Secondary Electrons Microscopy (SEM), X-ray microspectroscopy, X-ray Absorption Near Edge Structure (XANES) and electrochemical Impedance spectroscopy (EIS). XRD was used to evaluate the materials chemical reactivity through Rietveld analysis. SEM and X-ray microspectrscopy were used to study the …
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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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Scalable Electrochemical Surface Enhanced Raman Spectroscopy (EC-SERS) for bio-chemical analysis
… 1000 Hz). Moreover, by electrochemical impedance spectroscopy (EIS) measurements and equivalent circuit modeling-analysis, we can decompose the overall impedance of MWCNT/polymer nanopillar arrays in the electrolyte into multiple bulk and interfacial circuit components, and thus can illustrate …
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Analysis of Electrode Geometric Parameters on AC Impedance Response
<p>Electrochemical Impedance Spectroscopy (EIS) is a powerful and proven tool for analyzing AC impedance response. A conventional three electrode EIS method was used to perform the investigation in the present study. Saturated potassium chloride solution was used as the electrolyte, and three …
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Impedance Characterization and Modeling of Subcellular to Micro-Sized Au, Pt, TiN, and ITO Electrodes With PEDOT:PSS-Coating For Bioelectrical Interfaces
… of the interfacial electrochemical impedance spectroscopy (EIS) of electrodes comprised of a variety of biocompatible electrode materials consisting of gold (Au), platinum (Pt), indium tin oxide (ITO), and titanium nitride (TiN) coated with/without organic polymer, …
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Study and achievement of organic-inorganic innovative materials through electrochemical techniques
… are characterized by Electrochemical Impedance Spectroscopy (EIS), which can give fast and useful information about the surface state. In this thesis results of sensor functionalization and performance varying electrochemical parameter and preparation conditions are presented and discussed, …
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Two-Dimensional Titanium Carbide MXene for Lithium-ion Conductive Solid-state Electrolytes
… electron microscopy with energy-dispersive spectroscopy (SEM-EDS), Fourier-transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), and Kelvin probe force microscopy (KPFM) to evaluate its structural and morphological properties. To explore the potential of 2D Ti3C2Tx MXene in …
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