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Femtosecond laser programmed artificial musculoskeletal systems.


ABSTRACT: Natural musculoskeletal systems have been widely recognized as an advanced robotic model for designing robust yet flexible microbots. However, the development of artificial musculoskeletal systems at micro-nanoscale currently remains a big challenge, since it requires precise assembly of two or more materials of distinct properties into complex 3D micro/nanostructures. In this study, we report femtosecond laser programmed artificial musculoskeletal systems for prototyping 3D microbots, using relatively stiff SU-8 as the skeleton and pH-responsive protein (bovine serum albumin, BSA) as the smart muscle. To realize the programmable integration of the two materials into a 3D configuration, a successive on-chip two-photon polymerization (TPP) strategy that enables structuring two photosensitive materials sequentially within a predesigned configuration was proposed. As a proof-of-concept, we demonstrate a pH-responsive spider microbot and a 3D smart micro-gripper that enables controllable grabbing and releasing. Our strategy provides a universal protocol for directly printing 3D microbots composed of multiple materials.

SUBMITTER: Ma ZC 

PROVIDER: S-EPMC7484797 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Femtosecond laser programmed artificial musculoskeletal systems.

Ma Zhuo-Chen ZC   Zhang Yong-Lai YL   Han Bing B   Hu Xin-Yu XY   Li Chun-He CH   Chen Qi-Dai QD   Sun Hong-Bo HB  

Nature communications 20200910 1


Natural musculoskeletal systems have been widely recognized as an advanced robotic model for designing robust yet flexible microbots. However, the development of artificial musculoskeletal systems at micro-nanoscale currently remains a big challenge, since it requires precise assembly of two or more materials of distinct properties into complex 3D micro/nanostructures. In this study, we report femtosecond laser programmed artificial musculoskeletal systems for prototyping 3D microbots, using rel  ...[more]

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