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条纹和图案形成系统的峰值效应和动态在周期性的一维基板上
C Reichhardt1, C J O Reichhardt1
1Theoretical Division and Center for Nonlinear Studies, <a href="https://ror.org/01e41cf67">Los Alamos National Laboratory</a>, Los Alamos, New Mexico 87545, USA.
Physical review. E
|June 22, 2024
概括
这项研究揭示了二维图案形成系统如何与基板相互作用,表明条纹与基板的对齐最大化了依赖力. 在应用的驱动器下观察到动态重新排序和重新进入的固定效应.
科学领域:
- 软物质物理学 软物质物理学
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 由于相互竞争的相互作用,二维 (2D) 图案形成系统表现出复杂的行为,如异型晶体,条纹和气泡.
- 周期性一维 (1D) 基板可以显著影响这些二维系统的排序,固定和动态.
研究的目的:
- 为了研究与1D周期基板相互作用的2D模式形成系统的排序,固定和动态行为.
- 了解基质可比性和粒子相互作用对系统动态和相位过渡的影响.
主要方法:
- 在1D周期基板下模拟具有竞争性的远程排斥和短程吸引的2D系统.
- 对临界分离力,单子分离,塑料流和动态相位过渡的分析.
- 基于系统参数的动态相的映射,如填充,相互作用强度,基板强度和应用驱动.
主要成果:
- 当条纹与基质对齐并变得与基质相称时,临界剥离力达到峰值.
- 条纹的塑料脱落导致动态重新排序,进入垂直于基质谷的状态.
- 观察到复杂的固定效应,条纹和较小的泡状态表现出比异性晶体和较大的泡状态更强的固定.
- 基板间距小于泡/条纹宽度,导致对基板深处垂直的钉钉条纹状态.
结论:
- 相互竞争的相互作用和周期基质之间的相互作用决定了2D图案形成系统的复杂排序和动态.
- 基质的可比性对于理解定义过渡和新出现的动态阶段至关重要.
- 该研究绘制了具有可识别的运输和订单签名的独特动态阶段,提供了对驱动软物质系统的洞察.
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