Self-powered illuminating glucose sensor

doi:10.1016/j.nanoen.2022.107908

Self-powered illuminating glucose sensor

2022-12-01

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DOI：10.1016/j.nanoen.2022.107908

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Abstract

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Nowadays, the development of various electricity generation methods via dynamic water motions has been intensively focused on. While verifying the exact electricity generation mechanism, another important task of making full use of the electricity generated by the solid-liquid interaction is being considered. Herein, we demonstrated a self-powered illuminating glucose sensor with high sensitivity (similar to 22.61 V.M-1) and selectivity, and a wide detection range (0.5-100 mM), utilizing the electricity generated from the water infiltration into a glycine-coated porous CuO nanowires film. Fundamentally, the sensing mechanism could be comprehensively verified by an ionovoltaic effect that attributes the electricity generation to the adsorption/desorption of ions or protons at the solid-liquid interface. As the concentration of adsorbed glucose increases, the generated open-circuit voltage decreases accordingly. Moreover, by selectively turning on LEDs with different threshold voltages, the glucose concentration that is harmful to the human body is successfully distinguished. Overall, the self-powered illuminating sensor platform utilizing electricity generated by the water-infiltration phenomenon provides the feasibility of novel biosensors.

Keywords:

Solid-liquid interaction

Water-infiltration phenomenon

Electricity generation

Self-powered illuminating sensor

Ionovoltaic effect

Self-powered illuminating glucose sensor

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