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Frequency dependence of the threshold voltage of the Freedericksz effect in nematic and nematic reentrant phases
Author(s) -
Hauser A.,
Kresse H.,
Pelzl G.,
Demus D.
Publication year - 1981
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19810160918
Subject(s) - liquid crystal , fréedericksz transition , reentrancy , condensed matter physics , materials science , phase (matter) , relaxation (psychology) , biaxial nematic , isotropy , optics , physics , quantum mechanics , psychology , social psychology
In four substances exhibiting reentrant nematic phases the threshold voltage of the Freedericksz transition was measured as function of the frequency in the nematic and reentrant nematic phases. The isotropy frequency and the relaxation frequency were calculated using the experimental data. We found that extrapolated to the same temperature the relaxation frequency of the reentrant nematic phase is larger than that of the nematic phase.