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在活性超稳定玻璃中反向的辛格效应.

Rashmi Priya1, Smarajit Karmakar1

  • 1Tata Institute of Fundamental Research, 36/P, Gopanpally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad 500046, India.

Physical review. E
|October 21, 2025
PubMed
概括

超稳定玻璃在受到活性颗粒和剪切的影响时表现出可逆的记忆效应. 这种结构记忆使材料能够在剪切逆转时愈合,为活跃的无形固体提供了洞察力.

科学领域:

  • 材料科学 材料科学 材料科学
  • 物理 物理学 物理
  • 软物质物理学 软物质物理学

背景情况:

  • 无形材料中的记忆效应对于未来的应用至关重要.
  • 超稳定玻璃是材料科学研究的一个关键领域.

研究的目的:

  • 在活性粒子驱动和全球剪切的结合下,研究超稳定眼镜中的记忆效应.
  • 分析剪切方向变化对产量和结构演变的影响.

主要方法:

  • 采用超稳定玻璃模型系统,具有运行和动的活性粒子.
  • 在不同的应变点应用全球剪切与选择性方向逆转.
  • 分析产量,产量后的行为和结构演变.

主要成果:

  • 超稳定眼镜表现出短暂的可逆记忆效应.
  • 该系统显示异型反应,包括常规和反向的辛格效应.
  • 活动诱导的剪切带创造结构记忆,在剪切逆转时促进愈合.
  • 循环加载导致剪切软化和网络结构的转变.

结论:

  • 活性粒子和剪切集体影响机械反应和失序系统中的记忆形成.

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  • 活性无形固体中的结构记忆是短暂的,取决于变形历史.
  • 这些发现为超稳定玻璃的机械行为和愈合机制提供了洞察力.