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Contact Angle

Contact Angle

When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...

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相关实验视频

Updated: May 25, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

Published on: September 1, 2016

基于阴囊振动的接触式打印

Zihao Li¹, Teng Xiang¹, Xiangyu Yin¹

¹College of Mechanical and Electronic Engineering, China University of Petroleum (East China), Qingdao 266580, China.

Langmuir : the ACS journal of surfaces and colloids

|February 27, 2025

概括

这项研究介绍了阴囊振动接触印刷 (MVCP),一种新,高效的微滴沉积方法. MVCP简化了这个过程,并实现了高的印刷频率,克服了传统技术的局限性.

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Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy

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相关实验视频

Last Updated: May 25, 2025

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Published on: September 1, 2016

Creating Adhesive and Soluble Gradients for Imaging Cell Migration with Fluorescence Microscopy

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Published on: April 4, 2013

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科学领域:

材料科学材料科学材料科学
机械工程机械工程
流体动力学流体动力学

背景情况:

传统的微滴沉积方法使用液体桥梁分解是复杂和低效的.
现有的技术通常依赖于机械运动,将打印速度限制在几赫兹.

研究的目的:

开发一种新的,高效的微滴印刷技术.
调查阴茎震动的机制,以控制液体桥梁的形成和破裂.

主要方法:

开发了一种新的阴茎振动接触打印 (MVCP) 方法,使用压电散发器.
使用了实验研究,数值模拟和机械分析.
研究了受体表面水友性和振动振幅的影响.

主要成果:

MVCP简化了打印过程,并实现了高打印频率 (几十赫兹).
得到的滴滴尺寸小于喷嘴直径.
成功开发了一种针对低粘度油墨的按需打印策略.

结论:

MVCP为微滴沉积提供了一种简化和高效的替代方案.
该方法的性能对表面特性和振动参数敏感.
MVCP显示出用于高分辨率打印应用的潜力.