Electronically reversible adhesive methods
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United States of America Patent
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Nov 26, 2019
Grant Date -
May 23, 2019
app pub date -
Jan 21, 2019
filing date -
Sep 15, 2017
priority date (Note) -
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Abstract
A method of decoupling an adhesive system from a contact surface of an object is disclosed. The adhesive system has a full adhesive strength in a de-energized state. The adhesive system comprises a backing, carbon nanotubes, each having a first end region, coupled to the backing, and a second end region, opposite the first end region, and charged nanoparticles, each coupled to the second end region of at least one of the carbon nanotubes. The method comprises steps of electrically charging the backing and disengaging the adhesive system from the contact surface. Electrically charging the backing creates an electrical repulsion force between the backing and the charged nanoparticles, so that the full adhesive strength of the adhesive system is decreased to a reduced adhesive strength. Disengaging the adhesive system from the contact surface comprises applying a disengagement force to the adhesive system sufficient to overcome the reduced adhesive strength.
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