Electrical impedance microscopy Sidahmed Abayzeed University of Nottingham, UK
This abstract presents a novel optical technique that is capable of accurate microscopic measurements of electrical current and impedance. This technique offers a remarkable sensitivity demonstrated by detecting electrical current as low as 0.1pA on a 0.5 micrometre scale [1] . Measurements are performed using plasmonic sensors [2] that can be described as electrodes with optical readout. The poster demonstrates the ability to perform quantitative imaging of heterogenous surface capacitance at the gold-electrolyte interface. The method promises advanced capabilities in studying microscale ionic currents with wide-ranging applications in surface science, energy storage, and life science. References 1. Abayzeed, Sidahmed A. "Plasmonic-based impedance microspectroscopy of optically heterogeneous samples." Biomedical Optics Express 11.11 (2020): 6168-6180. 2. Abayzeed, Sidahmed A., et al. "Sensitive detection of voltage transients using differential intensity surface plasmon resonance system." Optics express 25.25 (2017): 31552-31567.
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