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Recent Progress of bio-inspired Camouflage materials:From Visible to Infrared Range

Chemical Research in Chinese Universities 2023年第1期39卷 19-29页

作者： BU Xiaochen BAI Hao State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027China

The adaptability of biological organisms to the environment is reflected in many aspects,especially in their camouflage of appearance.inspired by biological camouflage strategies,a number of adaptive camouflage materials and devices have been developed to protect soldiers,vehicles,or equipment in the military.Today,the need for adaptive camouflage extends into people’s lives,whose privacy and information security need to be protected in the era of big data.Herein,a review is provided on the recent advancements of adaptive camouflage from the perspective of biological organisms and Bio-inspired materials.Firstly,according to different biological mechanisms,we review the typical organisms that use pigmentary color,structural color,and morphological variation for adaptive camouflage,as well as those combine these strategies.Then,we provide an up-to-date review on recent developments in bio-inspired adaptive camouflage materials and devices with an emphasis on visible,infrared,and multispectral camouflage.At last,this review concludes the challenges and prospects for the future development of adaptive camouflage materials.It is noteworthy that there is never the best camouflage.To counter advanced detection techniques,it is necessary to unremittingly develop new materials and technologies to meet the increasing need for adaptive camouflage.

关键词： Bio-inspired material Adaptive camouflage Infrared camouflage Multispectral adaptability Structural color

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Design,Preparation and Properties of bio-inspired Hierarchical Structure Yarns with Enhanced Thermal Insulation and Water Transfer Ability

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Chemical Research in Chinese Universities 2021年第3期37卷 558-564页

作者： JIA Yueran GONG Shun ZHANG Shu ZHAO Shikun QIN Zhen PAN Kai Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029P.R.China College of materials Science and Engineering Beijing University of Chemical TechnologyBeijing100029P.R.China

Encouraged by the porous and stable structure of cold-resist animals’hair or feather,bio-inspired hierarchical structure yarns combining polyacrylonitrile(PAN)nanofibers and polypropylene(PP)hollow microfibers have been developed by a modified conjugate electrospinning technology.Physical cross-linking has been built to increase fibers adhesion and construct interlayer support for nanofibrous assembly.The nanofibers and hollow microfibers construct a stable porous structure with porosity of 62%,providing excellent thermal insulating ability[temperature difference(|ΔT|)between skin and yarn surface is 4.9℃]as well as good mechanical property.More interestingly,the water transfer ability(infiltrate the yarn in 10 s)of synthetic fibers has been improved greatly by the combination of thin diameter nanofibers to the yarn.It is believed that the research lays the foundation for bio-inspired engineering technology in the manufacture of thermal comfort.

关键词： Bio-inspired material Hierarchical structure yarn Thermal insulation Water transfer ability

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