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Preparation of Samples for Electron Microscopy

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...

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Updated: May 31, 2025

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

动态湿液体金属薄层通过表面含氧功能组诱导.

Yue Zhang^1,2, Zhao Wang¹, Shutong Wang³

¹CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.

|January 22, 2025

概括

这项研究引入了一种动态湿方法,以提高液态金属 (LM) 在聚合物上的可性. 优质- (EGaIn) 的增强湿化可使热管理性能提高20%.

关键词:

液体金属是一种流动金属.表面的修改表面的修改表面张力表面张力表面张力热管理热管理湿透性湿透性湿透性湿透性

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相关实验视频

Last Updated: May 31, 2025

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

A Method to Manipulate Surface Tension of a Liquid Metal via Surface Oxidation and Reduction

Published on: January 26, 2016

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance

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Published on: September 5, 2018

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

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Published on: November 9, 2015

科学领域:

材料科学材料科学材料科学
表面化学表面化学
纳米技术纳米技术

背景情况:

液体金属 (LMs) 具有很高的表面张力,这阻碍了它们的实际应用.
在各种基板上控制LM的湿度和阐明底层机制仍然是重大挑战.

研究的目的:

开发一种简单的动态湿策略,以调节聚合物基板上的优- (EGaIn) 湿性.
为了研究表面化学和EGaIn湿行为之间的关系.
评估增强的湿度对热管理性能的影响.

主要方法:

聚合物基板的化学表面修饰.
动态湿实验用于测量滑动角度和粘合力.
X射线光电子光谱 (XPS) 用于分析表面功能组和化学相互作用.
在EGaIn热管理系统中评估热传递速率.

主要成果:

一个稳定,薄 (∼18μm) 的EGaIn层,在修改的表面上自发形成.
聚合物基板的湿行为由滑动角度和粘附力进行分类.
在含有≥18%氧的功能组的表面发生动态湿,表明与EGaIn氧化物层的协调相互作用.
在EGaIn热管理系统中的湿化组,热传递率增加了高达20%.

结论:

动态湿策略有效地提高了EGaIn在特定聚合物表面上的湿性.
表面含有氧的功能组对于通过协调相互作用实现稳定的EGaIn湿至关重要.
改善的湿透性显著提高了热管理效率,为灵活的电子和热解决方案中的LM应用铺平了道路.