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A supertough electro-tendon based on spider silk composites.

ABSTRACT: Compared to transmission systems based on shafts and gears, tendon-driven systems offer a simpler and more dexterous way to transmit actuation force in robotic hands. However, current tendon fibers have low toughness and suffer from large friction, limiting the further development of tendon-driven robotic hands. Here, we report a super tough electro-tendon based on spider silk which has a toughness of 420?MJ/m3 and conductivity of 1,077?S/cm. The electro-tendon, mechanically toughened by single-wall carbon nanotubes (SWCNTs) and electrically enhanced by PEDOT:PSS, can withstand more than 40,000 bending-stretching cycles without changes in conductivity. Because the electro-tendon can simultaneously transmit signals and force from the sensing and actuating systems, we use it to replace the single functional tendon in humanoid robotic hand to perform grasping functions without additional wiring and circuit components. This material is expected to pave the way for the development of robots and various applications in advanced manufacturing and engineering.

SUBMITTER: Pan L

PROVIDER: S-EPMC7067870 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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A supertough electro-tendon based on spider silk composites.

Pan Liang L Wang Fan F Cheng Yuan Y Leow Wan Ru WR Zhang Yong-Wei YW Wang Ming M Cai Pingqiang P Ji Baohua B Li Dechang D Chen Xiaodong X

Nature communications 20200312 1

Compared to transmission systems based on shafts and gears, tendon-driven systems offer a simpler and more dexterous way to transmit actuation force in robotic hands. However, current tendon fibers have low toughness and suffer from large friction, limiting the further development of tendon-driven robotic hands. Here, we report a super tough electro-tendon based on spider silk which has a toughness of 420 MJ/m<sup>3</sup> and conductivity of 1,077 S/cm. The electro-tendon, mechanically toughened ...[more]

PMID: 32165612

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Dataset Information

A supertough electro-tendon based on spider silk composites.

Publications

A supertough electro-tendon based on spider silk composites.

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