电渗流或电渗效应是于多孔介质、微通道、及其它流体管道两端施加电压时造成的流体流动。电渗流速度与管道尺寸无关,但是尺寸大的管道中流体与压力梯度的关系会更明显。电渗流对小尺寸流动意义更为重大。电渗流是化学分离技术中的重要技术,特别是毛细管电泳。电渗流可以发生在自然的未过滤的水中,如缓冲溶液
它是在毛细管两端施加高电压,以电渗流(EOF)作为流动相的推动力,根据样品中各组分在固定相和流动相间分配系数的差异以及在电场中迁移速率的不同而实现分离的一种高效微分离...
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第十六章_文库网 胶表面带负电,和溶液接触时形成双电层,在高电压作用下水合阳离子引起溶液在毛细管内整体向负极方向移动,称电渗流(Electros-motic flow, EOF)或电迁移;中性粒子电泳速度为0,因此其迁移速度和EOF相当;阴离子运动方向和EOF 相反,但是因为E
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It was found that the efficiency of the separation was enhanced and the electroosmotic flow changed as well after the capillary was modified.
研究发现金纳米修饰的毛细管有效地增强了分离度,并改变了电渗流的大小。
参考来源 - 毛细管电泳分析方法及应用研究Dispersion and mixture were argued with pressure driven-flow and electroosmosis driven-flow, under pressure driven-flow, it was advantageous of dispersion and mixture for blend and spiral conduits.
分别对压力驱动流体和电渗流驱动流体的分散与混合进行了讨论,在压力驱动流体下,设计的管道存在折叠对微管道中样品与试剂的混合有利;在电渗流驱动下,对称以及深宽比高的微管道最佳。
参考来源 - 微型全化学分析芯片分析毒性重金属离子In this system, the measured sample is controlled by electroosmotic flow, and the chemiluminescence reagents are transported by micropump.
在该检测系统中,被测样品氨基酸通过电渗流控制,化学发光试剂由自制微泵输送。
参考来源 - 化学发光检测PMMA微流控芯片研究Electroosmosis has been widely used in fields of biochemistry and medicine.
电渗流是生物芯片中广泛应用的微流体驱动与控制技术。
参考来源 - 生物芯片微通道周期性电渗流特性研究The methods of applying transverse electric field and utilizing the circulating flow characteristic of the closed-end electro-osmotic flow are presented to improve the mixing efficiency.
3.提出了采用施加横向电场和利用闭口微通道电渗流的环流特性来提高微通道内混合效率的方法。
参考来源 - 电动效应作用下微通道内液体流动特性·2,447,543篇论文数据,部分数据来源于NoteExpress
连续性理论无法解释电荷的倒置与反转电渗流这两种现象。
Both charge inversion and flow reversal can't be accounted for in continuum theory.
通过控制电压偏置方向,利用电渗流效应使毛细管多孔导电膜的刻蚀成功率得到显著提高。
The success rate of porous conductive membrane preparation on fused silica capillary was greatly improved by control of voltage bias and electroosmosis effect.
通过物理吸附方法将其涂布在熔融石英毛细管内表面,测定了涂层柱的电渗流及其对碱性蛋白质的分离能力。
The coated column prepared by this method was good enough to repress the electroosmotic flow and the adsorption of the proteins on the capillary wall.
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