Title :
Microstrip technique for investigation of dielectric characteristics of liquid crystals in SHF range
Author :
Belyaev, B.A. ; Drokin, N.A. ; Shepov, V.N.
Author_Institution :
Kirensky Inst. of Phys., Krasnoyarsk, Russia
Abstract :
The microstrip sensors for studying dielectric properties of liquid crystals (LQ) in SHF range are developed. The behavior of the SHF permittivity of a nematic liquid crystal 5CB in external electrical and magnetic fields is studied. The minimum of dielectric losses in LQ is found to be when the orientation of long axes of molecules are parallel to the direction of SHF electrical field. The permittivity dispersion for the liquid crystal 5CB in solid, nematic and isotropic phases is investigated. The dielectric spectra revealed the resonant features concerned with the conformational molecular vibrations
Keywords :
dielectric losses; dielectric measurement; microstrip components; microwave measurement; nematic liquid crystals; organic compounds; permittivity; 5CB; SHF measurement; conformational molecular vibration; dielectric loss; dielectric properties; electric field; magnetic field; microstrip sensor; nematic liquid crystal; orientational resonance; permittivity; Dielectric liquids; Dielectric losses; Liquid crystals; Magnetic fields; Magnetic liquids; Magnetic sensors; Microstrip; Permittivity; Resonance; Solids;
Conference_Titel :
Electronic Instrument Engineering Proceedings, 1998. APEIE-98. Volume 1. 4th International Conference on Actual Problems of
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-4938-5
DOI :
10.1109/APEIE.1998.769009
