响应性微纤维的异型网络中的定向调动和相位过渡类行为
Shiran Ziv Sharabani1,2,3, Elad Livnat1,2,3, Maia Abuchalja1
1School of Chemistry, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, 6997801, Israel. amitsitt@tauex.tau.ac.il.
Soft matter
|February 15, 2024
概括
研究人员用热敏微纤维制造出形状变化的网络. 这些网络具有可编程的定向驱动,在软机器人和驱动器中具有应用.
科学领域:
- 材料科学 材料科学 材料科学
- 软机器人软机器人 软机器人软机器人
- 聚合物科学 聚合物科学
背景情况:
- 生物系统中普遍存在二维形状变形网络.
- 它们的细胞性质赋予了独特的物理性质,引发了研究兴趣.
研究的目的:
- 使用热敏聚合物微纤维制造和特征化异型形状变形网络.
- 为了研究微尺度纤维特性和宏观网络变形行为之间的关系.
主要方法:
- 使用可控制半径和长度的热敏聚合物微纤维制造网络.
- 在胀时个体纤维反应 (线性延伸或曲) 的表征.
- 对宏观尺度的形状变化和压缩性进行分析.
主要成果:
- 由于光纤的战略定位和各种响应,网络表现出定向驱动.
- 纤维段显示线性延伸或曲,模拟第二阶段相位过渡.
- 凸起的区域显示负压缩性,导致胀后收缩,而扩展的区域保持形状.
结论:
- 纤维特性中的微尺度变化可以精确控制宏观变形.
- 这种方法允许以中等尺度的精度编程形状变形行为.
- 这些发现为开发先进的可编程微观软机器人和执行器开辟了道路.
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