Please use this identifier to cite or link to this item:
Title: Colloidal phase transition driven by alternating electric field
Authors: Liu, Y.
Narayanan, J. 
Liu, X.-Y. 
Issue Date: 2006
Citation: Liu, Y., Narayanan, J., Liu, X.-Y. (2006). Colloidal phase transition driven by alternating electric field. Journal of Chemical Physics 124 (12) : -. ScholarBank@NUS Repository.
Abstract: The transverse two-dimensional assembly of colloidal particles near an electrode surface subjected to ac polarization is studied by varying the frequency and field strength in the absence and presence of an added electrolyte. The variation of the translational and bond-orientational correlation functions with frequency suggests the existence of a hexatic phase in which the particles retain the remnants of the crystalline long-range orientational order, but has a liquidlike translational order. The electrohydrodynamic (EHD) flow is analyzed in the light of the existing theoretical models. The equilibrium distribution of particles is considered to be the resultant of the two opposing forces-Stoke's force due to EHD flow and the screened Coulomb interaction between the colloidal particles. Several features of the experimental results are discussed, such as the role played by the EHD flow in the particle aggregation, the dependence of the equilibrium interparticle separation on ionic strength, ζ potential, and particle size. © 2006 American Institute of Physics.
Source Title: Journal of Chemical Physics
ISSN: 00219606
DOI: 10.1063/1.2183310
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on May 31, 2023


checked on May 31, 2023

Page view(s)

checked on May 25, 2023

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.