Accession Number : AD0766803

Title :   Effect of Hydrostatic Pressure on the Phase Transition Temperatures of a Nematic Liquid Crystal.

Descriptive Note : Technical rept.,

Corporate Author : UTAH UNIV SALT LAKE CITY DEPT OF CHEMISTRY

Personal Author(s) : Boyd,J. D. ; Wang,C. H.

Report Date : 11 SEP 1973

Pagination or Media Count : 6

Abstract : The note reports the effect of hydrostatic pressure on the mesomorphic phase transition temperatures of p-(p-ethoxyphenylazo)-phenyl undecylenate (PPU), which exhibits a nematic range between 65 and 110C at one atmospheric pressure. Pressure up to approximately 25,000 psi (about 1,700 atms) was reached. The phase diagram of PPU is reported. Detection of the phase change was carried out by the Raman scattering technique.

Descriptors :   (*LIQUIDS, CRYSTAL STRUCTURE), (*PHASE STUDIES, LIQUIDS), (*FATTY ACID ESTERS, PHASE STUDIES), HYDROSTATIC PRESSURE, RAMAN SPECTROSCOPY

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE