Linked Life Data

19998050

Source:http://linkedlifedata.com/resource/pubmed/id/19998050

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2010-1-21
pubmed:abstractText
Nematic droplets suspended in the isotropic phase of the same substance were subjected to alternating electrical fields of varying frequency. To keep the system at a constant nematic/isotropic volume ratio with constant droplet size, we carefully kept the temperature in the isotropic/nematic coexistence region, which was broadened by adding small amounts of a non-mesogenic liquid. Whereas the nematic droplets remained spherical at low (in the order of 10 Hz) and high frequencies (in the order of 1 kHz), at intermediate frequencies we observed a marked flattening of the droplets in the plane perpendicular to the applied field. Droplet deformation occurred both in liquid crystals (LCs) with positive and negative dielectric anisotropy. The experimental data can be quantitatively modelled with a combination of the leaky dielectric model and screening of the applied electric field due to finite conductivity.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Dec
pubmed:issn
1292-895X
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
387-94
pubmed:year
2009
pubmed:articleTitle
Frequency-dependent deformation of liquid crystal droplets in an external electric field.
pubmed:affiliation
Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128, Mainz, Germany. auhammer@mpip-mainz.mpg.de
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't