UNIPOLAR ARTIFICIAL MUSCLES AND METHODS OF USE THEREOF
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United States of America Patent
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May 11, 2023
app pub date -
Feb 3, 2020
filing date -
Feb 7, 2019
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Abstract
Previous electrochemically-powered yarn muscles cannot be usefully operated between extreme negative and extreme positive potentials, since strokes during electron injection and during hole injection partially cancel because they are in the same direction. Unipolar-stroke carbon nanotube yarn muscles are described in which muscle strokes are additive between extreme negative and extreme positive potentials, and stroke increases with potential scan rate. These electrochemical artificial muscles include an electrically conducting twisted or coiled yarn and a material that dramatically shifts the potential of zero charge of the electrochemically actuated yarn.
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