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培训和再培训液晶弹性金属材料,以实现多能功能.

Savannah D Gowen1, Elina Ghimire2, Charlie A Lindberg2

  • 1Department of Physics and The James Franck and Enrico Fermi Institutes, University of Chicago, IL 60637.

Proceedings of the National Academy of Sciences of the United States of America
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PubMed
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这项研究表明,液晶弹性体可以训练特定的机械功能,如辅助性,然后重新设置和重新训练新的功能,展示多能材料设计.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 材料机械学 材料机械学
  • 软物质物理学 软物质物理学

背景情况:

  • 材料设计传统上依赖于化学修饰或再加工.
  • 一种新的方法",训练",使用物理修饰来赋予功能.
  • 液晶弹性体 (LCE) 具有可调节的机械性能.

研究的目的:

  • 研究宏观LCE元材料中机械功能的"训练"和"除".
  • 证明能够在需要时诱导和逆转特定的机械反应的能力.
  • 探索工程材料中的多能功能的概念.

主要方法:

  • 从液晶弹性体制造宏观的元材料.
  • 使用定向老化技术来调整材料的特性.
  • 应用机械刺激来诱导并随后删除特定的功能.

主要成果:

  • 成功训练LCE元材料通过通过定向老化调整Poisson的比率来表现出辅助性反应.
  • 证明了能够重置材料的状态并将其重新训练为不同的机械功能,allostery.
  • 证实了经过训练的LCE元材料的多能性质.

结论:

  • 通过体力训练,LCE元材料可以通过可逆性编程机械功能.
  • 这种训练和删除能力使得按需的功能重编程成为可能.
  • 这些发现为设计适应性和多功能材料开辟了新的途径.