Electric fields enable tunable surfactant transport to microscale fluid interfaces
Electric fields enable tunable surfactant transport to microscale fluid interfaces
复制标题
电场使可调节的表面活性剂传输到微尺度流体界面
DOI：
10.1103/physreve.100.023114
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发表时间：
2019
影响因子：
2.4
通讯作者：
Walker, Lynn M.
中科院分区：
文献类型：
--
作者：
Sengupta, Rajarshi;Khair, Aditya S.;Walker, Lynn M.
油溶性表面活性剂到油水界面的输运动力学使用定制的电气化毛细管微张力计平台进行量化。动态界面张力测量表明，在直流电场作用下，由于油中的载流子向界面迁移，表面活性剂的输运增强。值得注意的是，可以通过改变场强和时间调度来精确地调整这种增强。我们证明电场是操纵表面活性剂向微尺度流体-流体界面输运的新参数。
The transport dynamics of oil-soluble surfactants to oil-water interfaces are quantified using a custom-built electrified capillary microtensiometer platform. Dynamic interfacial tension measurements reveal that surfactant transport is enhanced under a dc electric field, due to electro-migration of charge carriers in the oil toward the interface. Notably, this enhancement can be precisely tuned by altering the field strength and temporal scheduling. We demonstrate electric fields as a new parameter to manipulate surfactant transport to microscale fluid-fluid interfaces.