小样本和接口的线性和非线性微观测量,使用微制造的探头
Zachary A Zell1, Vincent Mansard1, Jeremy Wright1
1Department of Chemical Engineering, University of California, Santa Barbara, 93106-5080, USA.
Journal of rheology
|July 31, 2025
概括
这项研究引入了一种新的微风学方法,用于表面活性剂接口的精确表面剪切风学. 该技术使用微按探针和电磁铁,允许可视化接口变形.
科学领域:
- 表面科学是一门学科.
- 类风病学 类风病学 类风病学
- 材料科学 材料科学 材料科学
背景情况:
- 界面类风湿学的特征对于理解复杂的流体行为至关重要.
- 现有的方法往往缺乏灵敏度或可视化变形的能力.
- 装有表面活性剂的接口表现出复杂的粘弹性特性,适用于许多应用.
研究的目的:
- 开发一种敏感的微风学技术,用于表面剪切风学.
- 为了使形测量期间的变形接口能够同时可视化.
- 为研究各种界面和散装材料提供一个多功能平台.
主要方法:
- 使用一个铁磁微按探针,固定在流体-流体接口上.
- 采用外部控制的电磁器,用于主动扭矩和力应用.
- 实现了各种操作模式,包括振荡旋转,控制扭矩,控制旋转速率和强加力.
主要成果:
- 演示了敏感的表面剪切形学测量与同时接口可视化.
- 由于圆形探头设计,实现了纯切削应变.
- 成功描述了各种系统:粘性单层,块共聚合物接口,老化接口,合体单层和散装材料.
结论:
- 开发的微风病学策略为界面风病学提供了一种多功能和敏感的方法.
- 该技术适用于广泛的材料,包括那些具有不断变化的特性.
- 这种方法推进了对界面现象的研究,要求最小的样本体积.
相关概念视频
01:18Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...