Microscopic Measurement of Diffusion
2005-01-12 13:11
浏览:2418次
分享:
资料摘要:
The phenomenon of diffusion has been known for centuries. For example,the ancients who dyed fabrics certainly noticed the leading edge of their turquoise dye propagating through their cotton cloth, and biologists have long been aware of osmosis through various membranes. With our century’s
advances in engineered materials, scientists and engineers are now able to design diffusive layers to provide controlled rates and selectivity of diffusion. There are a number of applications of engineered diffusion in
current technology. Some are medical: drug patches allowing sustained
slow release of a pharmaceutical, and membranes are used in dialysis and various laboratory separation procedures. Similar to the use of drug patches is the agricultural use of slow-release nodules to provide sustained fertilisation of soil. Industrial production of chemicals and foodstuffs often
depend on separations with various membranes. Other applications are of a less organic nature, as in the separation of gases by selective diffusion
through membranes, and of ions through a solid, which might be part of a
battery or other electronic device. Sometimes, diffusion is an undesirable
phenomenon, as when we wish to store gases dissolved in a solid, and they
can diffuse out over time, or when diffusion of oxygen into a semiconductor
crystal can depreciate the performance of an electronic device.
下载本篇资料:
Microscopic Measurement of Diffusion.pdf
646KB
相关资料
作为一款科研级的高性能显微共焦拉曼系统,XploRA PLUS 具有高分辨率、高灵敏度等诸多优点,是研究和测试分析的理想选择。它的使用非常便捷,可以根据不同的实验需求自动切换光栅、激光等。此外,它还拥有许多独特的功能,如配备了HORIBA Scientific 独有的SWIFT 超快速共焦成像功能,最快可达1ms/ 光谱,极大地提高了分析速度,其真共焦设计还能让您拥有高品质成像质量和高空间分辨率。
XelPleX兼具多通道功能(同时测量多个相互作用)和高灵敏度的表面等离子体共振技术,可实现高分辨动力学测量。流路系统采用创新性设计,并集成自动进样器,适用于多种样品测量,如复杂样品中的配体垂钓、细胞研究、小分子检测以及蛋白质和DNA分析。XelPleX采用的EzSuite软件平台,操作简单且可高效处理各种应用。
UVISEL相位调制型椭圆偏振光谱仪是基于25年经验研制而成的杰作,它具有无可比拟的高精度、高分辨率、优异的信噪比、长期的稳定性(UVISEL所实现的长期稳定性无需频繁校准),是纳米/微米级结构研究的理想工具。
HORIBA科学仪器事业部拥有超过35年的高性能ICP-OES开发及生产历史。
新款Ultima Expert 结合各类套装软件,简化及优化分析方法,可以为实验室内各类复杂样品提供极佳的解决方案。