Microbuckled Mechano-electrochemical Harvesting Fiber for Self-Powered Organ Motion Sensors

Mechanical harvesters have attracted tremendous attention as self-powered strain sensors; previous harvesters required high stress to stretch the fiber because of their high Young’s modulus and low elasticity. We report on a mechano-electrochemical harvesting (MECH) fiber based on the new buckle str...

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Published in:Nano letters 2022-11, Vol.22 (21), p.8695-8703
Main Authors: Sim, Hyeon Jun, Choi, Changsoon
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Language:English
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description Mechanical harvesters have attracted tremendous attention as self-powered strain sensors; previous harvesters required high stress to stretch the fiber because of their high Young’s modulus and low elasticity. We report on a mechano-electrochemical harvesting (MECH) fiber based on the new buckle structure, which has a low Young’s modulus (2 MPa) with high elasticity (up to 100%) in a similar physiological fluid. MECH converts mechanical energy into electrical energy by changing the capacitance due to changing the surface area caused by the microbuckle on the surface. The damage to the cells can be minimized by their softness; the fiber was stitched on the tissue of the pig stomach while maintaining the performance like a suture fiber. Additionally, the fiber successfully operated in an organ-similar system, which is composed of the stomach or bladder of a pig. The fiber has a high potential to be applied in wearable energy sources and self-powered strain sensors.
doi_str_mv 10.1021/acs.nanolett.2c03296
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title Microbuckled Mechano-electrochemical Harvesting Fiber for Self-Powered Organ Motion Sensors
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