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Low‐Frequency Electrophoretic Deposition of ZnO Nanoparticles: Effect of Organic Medium on Deposition Pattern
Author(s) -
Ghashghaie Sasan,
Marzbanrad Ehsan,
Raissi Dehkordi Babak
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04527.x
Subject(s) - electrophoretic deposition , deposition (geology) , suspension (topology) , nanoparticle , electrophoresis , acetone , scanning electron microscope , materials science , electrode , particle size , layer (electronics) , analytical chemistry (journal) , particle (ecology) , diffusion , chemical engineering , conductivity , chemistry , nanotechnology , chromatography , composite material , organic chemistry , mathematics , coating , oceanography , engineering , biology , paleontology , homotopy , thermodynamics , physics , sediment , pure mathematics , geology
In present study, using coplanar gold electrodes, the effect of two organic media, acetone and isopropanol, on the low‐frequency electrophoretic deposition pattern of ZnO nanoparticles at 1 Hz was investigated. Optical and scanning electron microscopy indicate the formation of microcracks across the layer deposited in acetone. In contrast, the alternating electrophoretic deposition of ZnO nanoparticles from an isopropanol‐based suspension lead to the formation of a uniform deposit connecting the two electrode edges. This evident difference in deposition pattern was attributed to suspension parameters such as viscosity, conductivity, particle size distribution, and diffusion coefficient.