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Capillarity in Fluid01:19

Capillarity in Fluid

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Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...
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相关实验视频

Updated: May 6, 2026

Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics
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Micro 3D Printing Using a Digital Projector and its Application in the Study of Soft Materials Mechanics

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使用毛细血管力量操纵微观物体的3D打印机

Cheng Zeng1, Maya Winters Faaborg1, Ahmed Sherif1

  • 1Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.

Nature
|October 26, 2022
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概括
此摘要是机器生成的。

研究人员开发出一种新型的毛细血管机器, 这种突破使得复杂的结构,

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Three-dimensional Printing of Thermoplastic Materials to Create Automated Syringe Pumps with Feedback Control for Microfluidic Applications
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3D Printing of In Vitro Hydrogel Microcarriers by Alternating Viscous-Inertial Force Jetting
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相关实验视频

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科学领域:

  • 软物质物理学
  • 微型机器人
  • 材料科学

背景情况:

  • 在液体界面组装物体时,毛细体力至关重要,但组装的结构通常是静态的.
  • 现有的微操作技术往往复杂,昂贵或可编程性有限.

研究的目的:

  • 动态调节毛细血管力量, 实现可编程的浮动物体的二维移动.
  • 开发一类新的"毛细血管机器",将垂直运动转化为可编程的横向对象操纵.
  • 展示使用这些机器组装复杂的微观结构.

主要方法:

  • 通过3D打印的高度变化的道来捕捉和引导浮动物体.
  • 设备在水浴中的垂直移动使得两个维度中的微观物体被捕获.
  • 基本的毛细血管机器被组合起来, 创建厘米尺度的复合机器, 用于编织丝.

主要成果:

  • 证明了可编程的转换,旋转和分离多个浮动物体.
  • 展示了通过循环垂直运动在水下物体上进行工作的能力.
  • 成功地将微观纤维编织成规定的,包括不重复的拓.

结论:

  • 毛细血管机器提供了一个独特的,与阴囊相关的微操作方法,简化了对毛细血管长度尺度的控制要求.
  • 这种方法可以快速,廉价地制造能够操纵微观粒子和编织微电线的机器.
  • 这项技术有可能用于微组件,高频电子和先进材料制造.