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001     48459
005     20200423204249.0
024 7 _ |a pmid:16316092
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024 7 _ |a 10.1021/la051258b
|2 DOI
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024 7 _ |a 2128/2180
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037 _ _ |a PreJuSER-48459
041 _ _ |a eng
082 _ _ |a 670
084 _ _ |2 WoS
|a Chemistry, Multidisciplinary
084 _ _ |2 WoS
|a Chemistry, Physical
084 _ _ |2 WoS
|a Materials Science, Multidisciplinary
100 1 _ |a Singh Negi, A.
|b 0
|0 P:(DE-HGF)0
245 _ _ |a Frequency-Dependent Shape Changes of Colloidal Clusters under Transverse Electric Field
260 _ _ |a Washington, DC
|b ACS Publ.
|c 2005
300 _ _ |a 11623
336 7 _ |a Journal Article
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336 7 _ |a Output Types/Journal article
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336 7 _ |a Journal Article
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336 7 _ |a JOURNAL_ARTICLE
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336 7 _ |a article
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440 _ 0 |a Langmuir
|x 0743-7463
|0 4081
|v 21
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a We have studied clustering of colloidal particles under the influence of an ac electric field as a function of frequency. The field was applied in a direction perpendicular to the confining walls. Two regimes are observed, a low frequency regime where the clusters are isotropic with a local triangular order, as reported earlier in the literature, and a new high-frequency regime where the clusters are highly elongated (anisotropic) with no local order. The crossover from one regime to the other occurs at a critical frequency, f(c). The threshold field for the cluster formation, E(th), increases with frequency in both the regimes. An increase in the particle size leads to a reduction in both E(th) and f(c). We present evidence to show that the elongated structures seen at high frequency are related to the field inhomogeneities at imperfections on the conducting surface. We also propose a possible mechanism based on hydrodynamic flow considerations to explain the formation of these clusters.
536 _ _ |a Kondensierte Materie
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588 _ _ |a Dataset connected to Web of Science, Pubmed
650 _ 7 |a J
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700 1 _ |a Sengupta, K.
|b 1
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700 1 _ |a Sood, A. K.
|b 2
|0 P:(DE-HGF)0
773 _ _ |a 10.1021/la051258b
|g Vol. 21, p. 11623
|p 11623
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|0 PERI:(DE-600)2005937-1
|t Langmuir
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856 7 _ |u http://dx.doi.org/10.1021/la051258b
|u http://hdl.handle.net/2128/2180
856 4 _ |u https://juser.fz-juelich.de/record/48459/files/76209.pdf
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913 1 _ |k M02
|v Kondensierte Materie
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914 1 _ |y 2005
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