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Molecular and Quantum Acoustics

Tytuł artykułu

Results of Ultrasonic Velocity and Density Investigations of the Nematic Liquid Crystal

Autorzy Balcerzak, A. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN Velocity of ultrasonic longitudinal waves in the nematic liquid crystal 1-(trans-4- hexylcyclohexyl)-4-isothiocyanatobenzene (6CHBT) has been measured as a function of temperature between 24oC and 55oC at 5.2 MHz. The temperature dependence of velocity shows a local minimum in the region of the nematicisotropic (N-I) phase transition. Additional temperature measurements of density have been done to calculate the thermal coefficient of expansion and the temperature coefficient of adiabatic compressibility. Both these parameters exhibit critical behaviour at the transition which has been analysed. The values of the exponent determining the growth of the order fluctuations have been calculated and compared with references.
Słowa kluczowe
EN liquid crystal   ultrasonic velocity   nematic-isotropic transition  
Wydawca Silesian Division of Polish Acoustical Society
Czasopismo Molecular and Quantum Acoustics
Rocznik 2004
Tom Vol. 25
Strony 17--22
Opis fizyczny Bibliogr. 7 poz., rys.
autor Balcerzak, A.
  • Institute of Fundamental Technological Research, Polish Academy of Sciences, Świętokrzyska 21, 00-049 Warszawa, Poland,
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-article-BUJ6-0007-0101