Micropatterning microscopic charge heterogeneity on flat surfaces for studying the interaction between colloidal particles and heterogeneously charged surfaces
Micropatterning microscopic charge heterogeneity on flat surfaces for studying the interaction between colloidal particles and heterogeneously charged surfaces
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DOI：
10.1021/nl015679z
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发表时间：
2002-04-01
期刊：
影响因子：
10.8
通讯作者：
Elimelech, M
中科院分区：
文献类型：
--
作者：
Chen, JY;Klemic, JF;Elimelech, M
提出了一种在固体表面上进行微观化学非均质微图像化的有效技术，用于研究胶体与非均质带电表面的相互作用。用氨基硅烷对玻璃表面的特定区域进行化学修饰，使玻璃表面的电荷非均质化。在控制良好的层流条件下，利用驻点流动池和带CCD相机的光学显微镜，实时观察了胶体颗粒在微图纹玻璃表面的沉积（吸附）过程。
An effective technique for micropatterning microscopic chemical heterogeneity onto solid surfaces for studying colloid interaction with heterogeneously charged surfaces is presented. Charge heterogeneity is micropatterned onto glass surfaces by the chemical modification of specified surface regions with aminosilane. The deposition (adsorption) of colloidal particles onto the micropatterned glass surfaces, under well-controlled laminar flow conditions, is observed in real time using a stagnation point flow cell and an optical microscope with a CCD camera.