波导微执行器自滚绕光纤收缩器进行自滚.
Yang Zong1,2, Minjie Xi1,2, Yunqi Wang1,2
1Department of Materials Science, Fudan University, Shanghai, 200438, China.
Advanced materials (Deerfield Beach, Fla.)
|February 16, 2025
概括
这项研究引入了新的水凝/黄金微执行器,它们可以在光纤周围快速自滚,从而精确地操纵微观物体. 这些光驱使细胞和微生物的快速,非接触捕获和移动.
科学领域:
- 生物医学工程 生物医学工程
- 微型机器人技术就是微型机器人.
- 材料科学 材料科学 材料科学
背景情况:
- 对像细胞这样的微观物体进行精确的操纵对于生物医学研究和微机器人学至关重要.
- 光纤光驱动器为狭窄的空间提供了优势,但面临着尺寸不匹配和响应时间缓慢的挑战.
- 现有的方法很难有效地处理快速移动的微观物体.
研究的目的:
- 设计和演示一种用于快速和精确操纵微观物体的新型微型执行器系统.
- 克服现有的基于光纤的微型执行器的局限性,特别是响应速度和尺寸集成.
- 为需要微操作的先进生物医学应用提供一个多功能平台.
主要方法:
- 使用水凝/黄金双层异构结构制造微执行器.
- 通过自滚机制将微型执行器与形光纤集成在一起.
- 利用光诱导的水凝相位过渡进行快速激活.
- 测试移动微生物 (克拉米多马纳斯,帕拉梅) 和酵母细胞的捕获和处理.
主要成果:
- 在0.55秒内实现了低曲刚度和大曲角度 (>800°) 的微执行器.
- 证明成功捕获快速游泳的克拉米多马纳斯和帕拉梅.
- 展示了可编程的非互动运动,用于无接触地操纵酵母细胞.
- 能够使用微米薄的水凝层来提高响应能力.
结论:
- 开发的水凝/Au双层微执行器为快速,精确的微操作提供了有效的解决方案.
- 这种围绕光纤的自滚机制克服了以前的集成和速度限制.
- 该平台显示了各种生物医学应用和先进微机器人的巨大潜力.
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