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International Journal of Fluid Mechanics Research

Publication de 6  numéros par an

ISSN Imprimer: 2152-5102

ISSN En ligne: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Sound Propagation in Liquid Crystal 5CB and 5CB Based Aerosil Suspensions

Volume 30, Numéro 3, 2003, 8 pages
DOI: 10.1615/InterJFluidMechRes.v30.i3.40
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RÉSUMÉ

The sound speed and absorption in nematic liquid crystal 4-n-pentyl-4'-cyanobiphenyl (5CB) and its mixtures with aerosil within the temperatures of nematic and isotropic phases of 5CB are investigated. In both pure 5CB and its mixtures with aerosil the two relaxation regions with frequencies fr1 ≈ 10 MHz and fr2 ≈ 400 MHz are revealed. The relaxation frequency fr1 critically increases in the nematic - isotropic phase transition and decreases with the increase of the aerosil concentration. Simultaneously, the frequency fr2 does not demonstrate critical behavior in the transition region and practically does not change with the insertion of an aerosil dopant. It is believed, that the first relaxation region is connected with the peculiarities of mesomorphic state, whereas the second one is typical for all liquids. A linear increase of the absorption coefficient and monotonous decrease of the sound velocity at the increasing of aerosil concentration reflect the constitution of aerosil in form of separated aggregates and lack of three-dimensional aerosil network.

CITÉ PAR
  1. Edwards R. S., Ward J., Zhou L. Q., Trushkevych O., The interaction of polymer dispersed liquid crystal sensors with ultrasound, Applied Physics Letters, 116, 4, 2020. Crossref

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