Spider dragline silk as torsional actuator driven by humidity

被引：132

作者：

Liu, Dabiao ^{[1
,2
,3
]}

Tarakanova, Anna ^{[4
]}

Hsu, Claire C. ^{[4
]}

Yu, Miao ^{[1
]}

Zheng, Shimin ^{[1
]}

Yu, Longteng ^{[1
,5
]}

Liu, Jie ^{[6
]}

He, Yuming ^{[1
,2
]}

Dunstan, D. J. ^{[3
]}

Buehler, Markus J. ^{[4
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Hubei, Peoples R China

[2] Hubei Key Lab Engn Struct Anal & Safety Assessmen, Wuhan 430074, Hubei, Peoples R China

[3] Queen Mary Univ London, Sch Phys & Astron, London E1 4NS, England

[4] MIT, Dept Civil & Environm Engn, Lab Atomist & Mol Mech, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[5] Natl Univ Singapore, Dept Biomed Engn, Singapore 117583, Singapore

[6] Hubei Univ, Coll Life Sci, Hubei Collaborat Innovat Ctr Green Transformat Bi, Wuhan 430062, Hubei, Peoples R China

来源：

SCIENCE ADVANCES | 2019年 / 5卷 / 03期

基金：

中国国家自然科学基金; 欧盟地平线“2020”;

关键词：

SECONDARY STRUCTURE; MECHANICAL-PROPERTIES; SUPERCONTRACTION; ORIENTATION; DYNAMICS; SEQUENCE; STRESS; FIBERS;

D O I：

10.1126/sciadv.aau9183

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Self-powered actuation driven by ambient humidity is of practical interest for applications such as hygroscopic artificial muscles. We demonstrate that spider dragline silk exhibits a humidity-induced torsional deformation of more than 300 degrees/mm. When the relative humidity reaches a threshold of about 70%, the dragline silk starts to generate a large twist deformation independent of spider species. The torsional actuation can be precisely controlled by regulating the relative humidity. The behavior of humidity-induced twist is related to the super-contraction behavior of spider dragline silk. Specifically, molecular simulations of MaSp1 and MaSp2 proteins in dragline silk reveal that the unique torsional property originates from the presence of proline in MaSp2. The large proline rings also contribute to steric exclusion and disruption of hydrogen bonding in the molecule. This property of dragline silk and its structural origin can inspire novel design of torsional actuators or artificial muscles and enable the development of designer biomaterials.

引用

页数：8

共 43 条

[1] Spider silk as a novel high performance biomimetic muscle driven by humidity [J].

Agnarsson, Ingi ;

Dhinojwala, Ali ;

Sahni, Vasav ;

Blackledge, Todd A. .

JOURNAL OF EXPERIMENTAL BIOLOGY, 2009, 212 (13) :1989-1993

[2]

[Anonymous], 2016, MEAS SCI TECHNOL, DOI DOI 10.1088/0957-0233/27/11/115017

[3]

[Anonymous], 2012, CHEM PHYS BEHAV HUMA

[4] Fibre science - Supercontraction stress in wet spider dragline [J].

Bell, FI ;

McEwen, IJ ;

Viney, C .

NATURE, 2002, 416 (6876) :37-37

[5] How super is supercontraction? Persistent versus cyclic responses to humidity in spider dragline silk [J].

Blackledge, Todd A. ;

Boutry, Cecilia ;

Wong, Shing-Chung ;

Baji, Avinash ;

Dhinojwala, Ali ;

Sahni, Vasav ;

Agnarsson, Ingi .

JOURNAL OF EXPERIMENTAL BIOLOGY, 2009, 212 (13) :1980-1988

[6] Hybrid carbon nanotube yarn artificial muscle inspired by spider dragline silk [J].

Chun, Kyoung-Yong ;

Kim, Shi Hyeong ;

Shin, Min Kyoon ;

Kwon, Cheong Hoon ;

Park, Jihwang ;

Kim, Youn Tae ;

Spinks, Geoffrey M. ;

Lima, Marcio D. ;

Haines, Carter S. ;

Baughman, Ray H. ;

Kim, Seon Jeong .

NATURE COMMUNICATIONS, 2014, 5

[7] In-drop capillary spooling of spider capture thread inspires hybrid fibers with mixed solid-liquid mechanical properties [J].

Elettro, Herve ;

Neukirch, Sebastien ;

Vollrath, Fritz ;

Antkowiak, Arnaud .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2016, 113 (22) :6143-6147

[8] Biopolymers: Shape memory in spider draglines [J].

Emile, O ;

Le Floch, A ;

Vollrath, F .

NATURE, 2006, 440 (7084) :621-621

[9] Torsional Carbon Nanotube Artificial Muscles [J].

Foroughi, Javad ;

Spinks, Geoffrey M. ;

Wallace, Gordon G. ;

Oh, Jiyoung ;

Kozlov, Mikhail E. ;

Fang, Shaoli ;

Mirfakhrai, Tissaphern ;

Madden, John D. W. ;

Shin, Min Kyoon ;

Kim, Seon Jeong ;

Baughman, Ray H. .

SCIENCE, 2011, 334 (6055) :494-497

[10] Extreme diversity, conservation, and convergence of spider silk fibroin sequences [J].

Gatesy, J ;

Hayashi, C ;

Motriuk, D ;

Woods, J ;

Lewis, R .

SCIENCE, 2001, 291 (5513) :2603-2605

← 1 2 3 4 5 →