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    Biothermal Sensing of a Torsional Artificial Muscle

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    Article (1.653Mb)
    Date
    2016-01-25
    Author
    Lee, Sung-Ho
    Kim, Tae Hyeob
    Lima, M©rcio D.
    Baughman, Ray H.
    Kim, Seon Jeong
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    Abstract
    Abstract
    Biomolecule responsive materials have been studied intensively for use in biomedical applications as smart systems because of their unique property of responding to specific biomolecules under mild conditions. However, these materials have some challenging drawbacks that limit further practical application, including their speed of response and mechanical properties, because most are based on hydrogels. Here, we present a fast, mechanically robust biscrolled twist-spun carbon nanotube yarn as a torsional artificial muscle through entrapping an enzyme linked to a thermally sensitive hydrogel, poly(N-isopropylacrylamide), utilizing the exothermic catalytic reaction of the enzyme. The induced rotation reached an equilibrated angle in less than 2 min under mild temperature conditions (25-37 ⁰C) while maintaining the mechanical properties originating from the carbon nanotubes. This biothermal sensing of a torsional artificial muscle offers a versatile platform for the recognition of various types of biomolecules by replacing the enzyme, because an exothermic reaction is a general property accompanying a biochemical transformation.
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    URI
    http://hdl.handle.net/10735.1/5084
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    • Baughman, Ray H.
    • NTI Research

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