A novel dielectrophoresis potential spectroscopy for colloidal nanoparticles
نویسندگان
چکیده
منابع مشابه
Dielectrophoresis of charged colloidal suspensions.
We present a theoretical study of dielectrophoretic (DEP) crossover spectrum of two polarizable particles under the action of a nonuniform ac electric field. For two approaching particles, the mutual polarization interaction yields a change in their respective dipole moments, and hence, in the DEP crossover spectrum. The induced polarization effects are captured by the multiple image method. Us...
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A theoretical study of the dielectrophoretic ~DEP! spectrum of a pair of touching colloidal particles or biological cells in a host fluid under the application of a nonuniform alternating current ~ac! electric field is presented. The main objective of this work is to investigate the correlation effects due to the presence of mutual polarization on the DEP spectrum. In particular, we employ the ...
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Dielectrophoresis is the movement of particles in nonuniform electric fields and has been of interest for application to manipulation and separation at and below the microscale. This technique has the advantages of being noninvasive, nondestructive, and noncontact, with the movement of particle achieved by means of electric fields generated by miniaturized electrodes and microfluidic systems. A...
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Transition metals have long been used as catalysts in the form of dispersions stabilized on inorganic substrates such as silica gel, alumina, and activated charcoal.1 More recently, colloidal platinum nanoparticles have been used as catalysts and photocatalysts in solutions.2 Aqueous colloidal platinum particles are mostly prepared by the reduction of a platinum salt by hydrogen, photochemical,...
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ژورنال
عنوان ژورنال: ELECTROPHORESIS
سال: 2017
ISSN: 0173-0835,1522-2683
DOI: 10.1002/elps.201700049