Bioinspired 2D Isotropically Fatigue-Resistant Hydrogels

Liang, Xiangyu1; Chen, Guangda1; Lin, Shaoting2; Zhang, Jiajun1; Wang, Liu3; Zhang, Pei1; Lan, Yang4; Liu, Ji1,5,6

2022

10.1002/adma.202107106

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

Engineering conventional hydrogels with muscle-like anisotropic structures can efficiently increase the fatigue threshold over 1000 J m(-2) along the alignment direction; however, the fatigue threshold perpendicular to the alignment is still as low as approximate to 100-300 J m(-2), making them nonsuitable for those scenarios where isotropic properties are desired. Here, inspired by the distinct structure-properties relationship of heart valves, a simple yet general strategy to engineer conventional hydrogels with unprecedented yet isotropic fatigue resistance, with a record-high fatigue threshold over 1,500 J m(-2) along two arbitrary in-plane directions is reported. The two-step process involves the formation of preferentially aligned lamellar micro/nanostructures through a bidirectional freeze-casting process, followed by compression annealing, synergistically contributing to extraordinary resistance to fatigue crack propagation. The study provides a viable means of fabricating soft materials with isotropically extreme properties, thereby unlocking paths to apply these advanced soft materials toward applications including soft robotics, flexible electronics, e-skins, and tissue patches.

bioinspiration fatigue resistance hydrogels isotropic materials lamellar stacking

SCI ; EI

英语

NI论文 ; ESI高被引

第一 ; 通讯

Shenzhen municipal government[Y01336223] ; SUSTech[Y01336123] ; MechERE Center at MIT[Y01346002] ; MechERE Center at SUSTech[Y01346002] ; Science, Technology, and Innovation Commission of Shenzhen Municipality[ZDSYS20200811143601004] ; Basic and Applied Basic Research Foundation of Guangdong Province[2020A1515110288] ; Basic Research Program of Shenzhen[JCYJ20210324105211032]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000743189300001

WILEY-V C H VERLAG GMBH

20220311473167

Fatigue crack propagation ; Fatigue of materials ; Hydrogels ; Professional aspects

Electronic Equipment, General Purpose and Industrial:715 ; Colloid Chemistry:801.3 ; Chemical Products Generally:804 ; Engineering Professional Aspects:901.1 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
2.MIT, Dept Mech Engn, Cambridge, MA 02139 USA
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.UCL, Dept Chem Engn, London WC1E 7JE, England
5.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen Key Lab Biomimet Robot & Intelligent Sys, Shenzhen 518055, Peoples R China
6.Southern Univ Sci & Technol, Guangdong Prov Key Lab Human Augmentat & Rehabil, Shenzhen 518055, Peoples R China

Liang, Xiangyu,Chen, Guangda,Lin, Shaoting,et al. Bioinspired 2D Isotropically Fatigue-Resistant Hydrogels[J]. ADVANCED MATERIALS,2022,34.

Liang, Xiangyu.,Chen, Guangda.,Lin, Shaoting.,Zhang, Jiajun.,Wang, Liu.,...&Liu, Ji.(2022).Bioinspired 2D Isotropically Fatigue-Resistant Hydrogels.ADVANCED MATERIALS,34.

Liang, Xiangyu,et al."Bioinspired 2D Isotropically Fatigue-Resistant Hydrogels".ADVANCED MATERIALS 34(2022).