The place of dielectric spectroscopy in probing electrorheology

Kyvelidis, S; Maistros, GM; Rattray, P; Block, H; Akhavan, J; Tsangaris, G

dc.contributor.author	Kyvelidis, S	en
dc.contributor.author	Maistros, GM	en
dc.contributor.author	Rattray, P	en
dc.contributor.author	Block, H	en
dc.contributor.author	Akhavan, J	en
dc.contributor.author	Tsangaris, G	en
dc.date.accessioned	2014-03-01T01:49:05Z
dc.date.available	2014-03-01T01:49:05Z
dc.date.issued	1999	en
dc.identifier.issn	0217-9792	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25662
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.classification	Physics, Mathematical	en
dc.title	The place of dielectric spectroscopy in probing electrorheology	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	The measurement of the dielectric spectra of PAnQR based ER fluids under shear and electric fields is discussed and results presented. Data in which either but not both shear or electric fields are present are submitted to analysis in terms of known theories. For flow alone, that analysis provides information on the attenuation of polarization by the uniform shear fields whilst the polarization of quiescent fluids by electric fields may lead to estimates of particles packing within the columns. Permittivity data when both fields are acting is presented, but in the absence of suitable theory, not modelled quantitatively. Empirical correlations are discussed and the conclusion drawn that fibrillation is readily suppressed by even moderate shear rates, although long range dipolar forces still persist to high shear rates. The de conductance of these fluids have also been measured. This together with permittivity data under ER fluid working conditions has importance in establishing the electrical parameters for any ER fluid.	en
heal.publisher	WORLD SCIENTIFIC PUBL CO PTE LTD	en
heal.journalName	INTERNATIONAL JOURNAL OF MODERN PHYSICS B	en
dc.identifier.isi	ISI:000082422800021	en
dc.identifier.volume	13	en
dc.identifier.issue	14-16	en
dc.identifier.spage	1829	en
dc.identifier.epage	1836	en