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可转换的超静态晶体自组装从分段体棒
Ji-Dong Hu1, Ting Wang2, Qun-Li Lei1
1National Laboratory of Solid State Microstructures and Department of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210093 Nanjing, China.
ACS nano
|March 8, 2024
概括
研究人员开发了一种自组装策略,用于使用合棒的微尺度可变机械结构. 这些结构具有可调节的机械性能,可用于微机械工程中的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 物理 物理学 物理
背景情况:
- 可变的机械结构可以改变它们的机械状态.
- 这种结构从基本的构建块中进行微观自组装仍然是一个悬而未决的问题.
研究的目的:
- 提出和研究微尺度可变机械结构的自组装策略.
- 探索结构性质和机械行为之间的关系.
主要方法:
- 利用蒙特卡洛模拟来建模自组装过程.
- 分析的结构基于债券协调 (z) 和对称性 (pgg).
- 研究了Poisson比率的可调性及其对机械模式的影响.
主要成果:
- 分段的合棒自组装成各种晶体,其协调数 (z) 从3到6不等.
- 确定了一个可变的超异静态结构,具有pgg对称性和冗余键 (z=5).
- 证明这种结构支持基于波桑比率的可调的软批量或边缘模式,可以从正向负转移.
结论:
- 从合棒中自组装的可变结构提供可调节的机械性能.
- 这些结构表现出与自我压力相关的独特软模式.
- 作为机械超材料在微机械工程中的潜在应用.
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