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一个内马特滴滴的拓变换
Runa Koizumi1, Dmitry Golovaty2, Ali Alqarni1
1Advanced Materials and Liquid Crystal Institute, Materials Science Graduate Program, Kent State University, Kent, OH 44242, USA.
Science advances
|July 7, 2023
概括
液晶水滴从球形形状转变为托里形状. 这种拓形状变化是由内马特弹性常数驱动的,为生物形态发生和软物质控制提供了洞察力.
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
- 生物物理学的生物物理.
背景情况:
- 形态发生涉及复杂的拓形状变化,在无生命系统中罕见.
- 阴性液晶表现出独特的定向特性.
- 了解形状转换是控制软材料的关键.
研究的目的:
- 为了证明一个拓形状转换在nematic液晶水滴.
- 研究弹性常数在推动这些转换中的作用.
- 探索在形态生成和材料设计中的潜在应用.
主要方法:
- 观察阴性液晶液滴的形状变化.
- 分析影响分子方向的弹性常数 (裂变,曲).
- 拓过渡的理论研究.
主要成果:
- 阴性液晶滴从球形的触角形转变为圆形的形状.
- 弹性异构性,特别是伸展和曲常数的相互作用,驱动了这种转换.
- 这种过渡在触状体中容易发生,但由于弹性特性,在 toroids 中受到阻碍.
结论:
- 在液晶水滴中,内马体弹性异构性可以诱导拓形状转换.
- 这种机制为理解生物形态发生过程中的拓变化提供了一个模型.
- 这些发现为控制和改变液晶和相关软材料的形状开辟了道路.
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