文献类型：期刊文献

英文题名：Chemical-Free Engineering of Natural Bamboo into Highly Sensitive Humidity-Driven Actuators

作者：Chen, Qi[1,2] Yuan, Jing[3] Chen, Lin[4,5] An, Xin[6] Yang, Yongqian[1,2] Fang, Changhua[4,5] Jia, Shanshan[1,2] Zhang, Shaobo[1,2]

第一作者：Chen, Qi

通信作者：Jia, SS[1];Zhang, SB[1];Jia, SS[2];Zhang, SB[2]

机构：[1]Sichuan Agr Univ, Coll Forestry, Chengdu 611130, Peoples R China;[2]Wood Ind & Furniture Engn Key Lab Sichuan Prov, Dept Educ, Chengdu 611130, Peoples R China;[3]Northwest A&F Univ, Coll Forestry, Yangling 712100, Peoples R China;[4]Int Ctr Bamboo & Rattan, Dept Biomat, Beijing 100102, Peoples R China;[5]State Forestry Adm, SFA & Beijing Cobuilt Key Lab Bamboo & Rattan Sci, Beijing 100102, Peoples R China;[6]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2024

卷号：12

期号：25

起止页码：9393-9402

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20242516275170);Scopus(收录号：2-s2.0-85196036401);WOS:【SCI-EXPANDED(收录号:WOS:001247060300001)】；

基金：We would like to thank the National Natural Science Foundation of Sichuan Province, China (No. 2023NSFSC1166), the National Natural Science Foundation of China (No. 32201639), the China Postdoctoral Science Foundation (2022M712287), and the Sichuan Provincial Tianfu Emei Young Talents Project (031/2312199026, 031/2212199007) for their financial support for this research.

语种：英文

外文关键词：Actuators; Humidity-driven; Bamboo film; Precise control; Chemical-free

摘要：Actuators driven by ambient humidity are of practical interest for various applications, such as soft robots and artificial muscles. However, the present methods involve high costs, complex chemical reactions, and associated environmental issues. Here, we demonstrated that by rationally controlling the thickness of bamboo via simple chemical-free processes, we could program the response sensitivity of bamboo to moisture. In particular, when the thickness of bamboo reached 25 mu m, it exhibited rapid actuation and continuous locomotion under moisture stimulation. This ultrathin bamboo film achieved an impressive bending curvature of up to 300 degrees within 9 s, and the bending curvature and speed surpassed the performance of the majority of previously reported materials, including graphene-based materials and synthetic polymers. Notably, this precise control of bending behavior via thickness was universal among different bamboo species but was not evident in other biomaterials such as black locust wood, reed stems, corn husks, and balsa wood. Based on the sensitive humidity-response property of bamboo film actuators, their tremendous potential in wide applications, including smart claws, walking robots, and electronic devices, has been demonstrated. Furthermore, bamboo film actuators demonstrated excellent recyclability and sustainability throughout their lifecycle, which was verified by conducting a life cycle assessment. This study provides new insights into designing all-natural actuators in a simple, mechanical way by utilizing the intrinsic characteristics of the biomaterial.