Cephalopod-inspired polymer composites with mechanically tunable infrared properties

Bin,Yao1,2,3; Xinwei,Xu4; Zhubing,Han3; Wenhan,Xu3; Guang,Yang3; Jing,Guo2; Guixin,Li4,5; Qing,Wang3; Hong,Wang4,5

2023-12

10.1016/j.scib.2023.10.039

Science Bulletin   影响因子和分区

2095-9273

2095-9281

Cephalopods have evolved an all-soft skin that can rapidly display colors for protection, predation, or communication. Development of synthetic analogs to mimic such color-changing abilities in the infrared (IR) region is pivotal to a variety of technologies ranging from soft robotics, flexible displays, dynamic thermoregulatory systems, to adaptive IR disguise platforms. However, the integration of tissue-like mechanical properties and rapid IR modulation ability into smart materials remains challenging. Here, by drawing inspiration from cephalopod skin, we develop an all-soft adaptive IR composite that can dynamically change its IR appearance upon equiaxial stretching. The biomimetic composite is built entirely from soft materials of liquid metal droplets and elastic elastomer, which are analogs of chromatophores and dermal layer of cephalopod skin, respectively. Driven by externally applied strains, the liquid metal inclusions transition between a contracted droplet state with corrugated surface and an expanded platelet state with relatively smooth surface, enabling dynamic variations in the IR reflectance/emissivity of the composite and ultimately resulting in reversible IR adaption. Strain-actuated flexible IR displays and pneumatically-driven soft devices that can dynamically manipulate their IR appearance are demonstrated as examples of the applicability of this material in emerging adaptive soft electronics.

Adaptive materials Bio-inspiration Liquid metals Polymer composites Stretchable electronics

SCI ; EI

英语

通讯

Elsevier BV

20234515029163

Biomimetics ; Composite materials ; Drops ; Flexible displays ; Organic conductors ; Strain

Biotechnology:461.8 ; Biology:461.9 ; Metallurgy:531.1 ; Conducting Materials:708.2 ; Computer Peripheral Equipment:722.2 ; Materials Science:951

2-s2.0-85175688571

人工提交

1.School of Aerospace Science and Technology, Xidian University, Xi’an 710071, China
2.State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
3.Department of Materials Science and Engineering, The Pennsylvania State University, University Park PA 16802, USA
4.Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
5.Guangdong Provisional Key Laboratory of Functional Oxide Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, China

Bin,Yao,Xinwei,Xu,Zhubing,Han,et al. Cephalopod-inspired polymer composites with mechanically tunable infrared properties[J]. Science Bulletin,2023,68(23):2962-2972.

Bin,Yao.,Xinwei,Xu.,Zhubing,Han.,Wenhan,Xu.,Guang,Yang.,...&Hong,Wang.(2023).Cephalopod-inspired polymer composites with mechanically tunable infrared properties.Science Bulletin,68(23),2962-2972.

Bin,Yao,et al."Cephalopod-inspired polymer composites with mechanically tunable infrared properties".Science Bulletin 68.23(2023):2962-2972.