In Situ Grown Silver–Polymer Framework with Coordination Complexes for Functional Artificial Tissues

Author:

Zhang Songlin1ORCID,Deng Yibing2,Libanori Alberto3,Zhou Yihao3,Yang Jiachen1,Tat Trinny3,Yang Lin1,Sun Wanxin4,Zheng Peng2,Zhu You‐Liang5ORCID,Chen Jun3,Tan Swee Ching1ORCID

Affiliation:

1. Department of Materials Science and Engineering National University of Singapore 117574 9 Engineering Drive 1 Singapore Singapore

2. School of Chemistry and Chemical Engineering Chemistry and Biomedicine Innovation Center Nanjing University Nanjing Jiangsu 210023 P. R. China

3. Department of Bioengineering University of California, Los Angeles Los Angeles CA 90095 USA

4. Bruker Nano Surface and Metrology 138671 30 Biopolis Street #09‐01 Singapore Singapore

5. State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University 130012 Changchun China

Abstract

AbstractSelf‐sensing actuators are critical to artificial robots with biomimetic proprio‐/exteroception properties of biological neuromuscular systems. Existing add‐on approaches, which physically blend heterogeneous sensor/actuator components, fall short of yielding satisfactory solutions, considering their suboptimal interfaces, poor adhesion, and electronic/mechanical property mismatches. Here, a single homogeneous material platform is reported by creating a silver–polymer framework (SPF), thus realizing the seamless sensing–actuation unification. The SPF‐enabled elastomer is highly stretchable (1200%), conductive (0.076 S m−1), and strong (0.76 MPa in‐strength), where the stretchable polymer matrix synthesis and in situ silver nanoparticles reduction are accomplished simultaneously. Benefiting from the multimodal sensing capability from its architecture itself (mechanical and thermal cues), self‐sensing actuation (proprio‐deformations and external stimuli perceptions) is achieved for the SPF‐based pneumatic actuator, alongside an excellent load‐lifting attribute (up to 3700 times its own weight), substantiating its advantage of the unified sensing–actuation feature in a single homogenous material. In view of its human somatosensitive muscular systems imitative functionality, the reported SPF bodes well for use with next‐generation functional tissues, including artificial skins, human–machine interfaces, self‐sensing robots, and otherwise dynamic materials.

Funder

Singapore Management University

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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