热反应性水凝具有热记忆
Jiageng Pan1, Zican Yang2, Hao Ran Chen2
1State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|September 24, 2025
概括
研究人员开发了模仿生物热记忆的热塑性水凝 (TP-凝). 这些可适应的TP凝可以存储热历史和改变性能,从而使密码学中的新应用成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 生物模拟材料 生物模拟材料
背景情况:
- 生物系统表现出热可塑性,根据热历史动态改变特性.
- 合成水凝缺乏这种能力,限制了它们的适应性和与生物材料的相似性.
- 珊瑚共生体的适应提供了生物灵感的热记忆系统的灵感.
研究的目的:
- 设计具有热可塑性的合成水凝,模拟生物热记忆.
- 开发一个反循环,使水凝能够编码和响应热史.
- 探索这些热塑性水凝 (TP-凝) 的应用.
主要方法:
- 开发了基于聚乙的TP凝,具有生物灵感的反循环.
- 利用热响应平衡膨胀来编码热史.
- 采用弹性网络约束来编程阶段过渡值 (Tc).
- 利用了温度依赖的聚合物-水混合性,以适应膨胀和多稳定状态.
- 在热编码过程中使用弹性来稳定元稳定状态的压抑的旋点分解.
主要成果:
- 在TP凝中实现可逆的不透明转换,可编程的Tc转移每周期为3-7°C.
- 通过适应性胀,编码热史来证明多稳定状态.
- 成功利用TP-gel可塑性用于加密应用,包括序列信息解密.
- 展示了空间分辨率的Tc梯度,作为解密的热力学钥匙.
结论:
- 通过弥合生物适应性和合成系统,为具有体现环境智能的材料建立了一个范式.
- 在创造适应性材料方面展示了热力学元稳定性工程的潜力.
- 强调TP凝对于需要环境响应性和内存的先进应用的重要性.
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