Technical aspects of dielectric spectroscopy measurements of liquid crystals

• Autorzy: Perkowski, P. , Łada, D. , Ogrodnik, K. , Rutkowska, J. , Piecek, W. , Raszewski, Z.
• Konferencja: Thw 17th Conference on Liquid Crystals : Chemistry Physics and Applications ; (17 ; 09.2007 ; Augustów, Poland)
• Języki publikacji: EN

Abstrakty

EN

The dielectric spectroscopy measurements were performed for antiferroelectric liquid crystalline mixture. For this purpose, the cells with ITO electrodes were prepared. It was found that it is not possible to detect some important relaxation modes in Sm A*, Sm C*, and Sm CA* phases. The own cell mode (related to cell properties, i.e., capacity and resistivity) covers the dielectric response of liquid crystalline medium. Dielectric measurements in cells with gold electrodes were done to show all possible relaxations in antiferroelectric liquid crystals (Lcs).

Słowa kluczowe

EN

smectic liquid crystals; dielectric spectroscopy; relaxation modes

• Czasopismo: Opto-Electronics Review
• Rocznik: 2008
• Tom: Vol. 16, No. 3
• Strony: 271-276
• Opis fizyczny: Bibliogr. 2 poz., wykr.

Twórcy

autor

Perkowski, P.

autor

Łada, D.

autor

Ogrodnik, K.

autor

Rutkowska, J.

autor

Piecek, W.

autor

Raszewski, Z.

• Institute of Applied Physics, Military University of Technology, 2 Kaliskiego Str., 00-908 Warsaw, Poland,

Bibliografia

• 1. S.T. Lagerwall, Ferroelectric and Antiferroelectric Liquid Crystals, Wiley-VCH, 1999.
• 2. W. Haase and S. Wróbel, Relaxation Phenomena, Springer-Verlag, 2003.