منابع مشابه
Liquid friction on charged surfaces: from hydrodynamic slippage to electrokinetics.
Hydrodynamic behavior at the vicinity of a confining wall is closely related to the friction properties of the liquid/solid interface. Here we consider, using molecular dynamics simulations, the electric contribution to friction for charged surfaces, and the induced modification of the hydrodynamic boundary condition at the confining boundary. The consequences of liquid slippage for electrokine...
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The field of electrokinetics, or electrically driven motion of particles and fluids, recently celebrated its 200th birthday [1, 2] and yet it remains a frontier of theoretical physics. Stringent tests of the standard model used by workers in this field are now possible in microfluidic devices using alternating-current [3] or induced-charge electro-osmotic (ICEO) flows [4]. Unlike classical elec...
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Zeta potentials of several polar protic (water, ethylene glycol, and formamide) as well as polar aprotic (dimethyl sulfoxide) liquids were measured in contact with three nonpolar surfaces using closed-cell electroosmosis. The test surfaces were chemisorbed monolayers of alkyl siloxanes, fluoroalkyl siloxanes, and polydimethylsiloxanes (PDMS) grafted on glass slides. All these liquids exhibited ...
متن کاملElectrokinetics
1. The question of the critical pore diameter for streaming potential is discussed. 2. The surface charge is calculated for cellulose in contact with solutions of K(3)PO(4), K(2)CO(3), K(2)SO(4), KCl, and ThCl(4). 3. The surface charge of cellulose in contact with a solution of 2 x 10(-4)N NaCl is calculated as a function of temperature and is found to show a sharp break at 39 degrees . This is...
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Adaptive responses greatly improve the competitive capacities of bacteria in diverse environments. Here, we investigate whether bacteria can adapt to a microenvironment with distinctive softness by examining the type-IV pili (TFP)-mediated motility of Pseudomonas aeruginosa cells on brush-like surfaces that are grafted with a layer of thermally sensitive polymer chains, where the softness of th...
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ژورنال
عنوان ژورنال: Oleoscience
سال: 2008
ISSN: 1345-8949
DOI: 10.5650/oleoscience.8.41