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Updated: Jul 12, 2026
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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
Published on: February 4, 2013
10微米大小的六角板的模板导向自组装
Thomas D Clark1, Rosaria Ferrigno, Joe Tien
1Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
Journal of the American Chemical Society
|May 9, 2002
概括
研究人员使用自组装和模板开发了一种微型制造战略. 六角形金属板在特定形状的模板内自组装成有序的微观结构,使控制的聚合物形成成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学工程是化学工程的重要组成部分.
背景情况:
- 分子自我组装和模板导向合成为创建有序微观结构提供了途径.
- 精确控制微尺度元件的制造仍然是材料科学中的一个重大挑战.
研究的目的:
- 介绍一种用于制造有序微结构的新策略.
- 利用分子自我组装和模板导向合成的原理用于微型制造.
- 开发一种控制微型组件尺寸和形状的方法.
主要方法:
- 制造六角形金属板 (厚度为4微米,侧面为10微米) 和补充圆形模板.
- 使用自组装单层 (SAM) 将组件打造成疏水和亲水区域的模式.
- 在水中的模板自组,由液体粘合剂在疏水表面的毛细血管相互作用驱动.
主要成果:
- 六角形板块成功地将模板内的空洞结起来,形成有序的阵列.
- 模板边界决定了微结构的最终尺寸和形状.
- 粘合剂的紫外线固化导致机械稳定,定义精确的微尺度阵列.
结论:
- 开发的方法可以控制自组装微结构的结构.
- 这项工作推进了基于自组装原则的实用微型制造技术.
- 该战略具有订购微尺度材料的可扩展生产的潜力.
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02:50Spindle Assembly
Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the microtubule-mediated pathway – collectively contributing to form a robust spindle apparatus.
In most cells, centrosomes are the primary microtubule nucleation centers. In the centrosome-mediated pathway, the G2-prophase transition triggers centrosome maturation and increased microtubule nucleation. Progressive nucleation results in a microtubule array...
In most cells, centrosomes are the primary microtubule nucleation centers. In the centrosome-mediated pathway, the G2-prophase transition triggers centrosome maturation and increased microtubule nucleation. Progressive nucleation results in a microtubule array...