环境响应水凝胶的非对称结构设计与智能仿生

Asymmetric Structure Design of Environmentally Responsive Hydrogels for Intelligent Biomimetic Applications

仿生学通过模仿生物体结构,对功能材料和智能器件进行设计及优化,使人工器械具有仿生功能。环境响应水凝胶可以感知多种外界刺激并做出反应,兼具软、湿特性,与生物软组织在结构和组成上有诸多相似之处,且生物相容性良好,是制备仿生器件的理想材料。通过仿生器件结构的非对称设计,利用水凝胶对环境变化的响应实现灵活多变的智能反应。本文以非对称仿生结构设计为主线,依次介绍了环境响应水凝胶的单层和双层非对称结构器件及先进成型工艺,提出了非对称结构的功能性及设计组装的“模块”化概念,为水凝胶仿生智能器件高效、通用、灵活、多功能的产业化应用提供了新的思路。

Bionics can create manmade system to replicate biosystem’s behaviors or acts through designing and optimizing functional materials and smart devices. The environmental responsive hydrogels(ERHs) can discern and react to a variety of stimuli, and are flexible, wet, and biocompatible. Similar to biological soft tissue structure and composition, ERHs can be ideal interface materials for biomimetic devices. By forming asymmetric structures, the devices made of ERHs can intelligently respond to environmental stimuli according to the materials selection and structure design. By focusing on ERHs asymmetric bionic structures, this article reviews monolayer and bilayer structured devices, and their advanced fabrication technologies. Through modularized functions and structure designs, one can assemble and integrate asymmetric structures according to the product requirements, which are ideal for efficiently and flexibly developing multifunctional bionic smart devices that have great potential for commercialization.