title: Phase transitions in liquid crystals under negative pressures.
abstract: We report the first measurements of orientational order parameters and phase transition temperatures in nematic and smectic A liquid crystals under negative pressures generated by an isochoric cooling of small droplets embedded in a glass former. Comparison of isobaric and isochoric measurements allows us to estimate the coefficients coupling the order parameter and density of an extended Landau--de Gennes model of the nematic phase.
authors.affiliation: Raman Research Institute, C. V. Raman Avenue, Bangalore- 560080, India.
authors.forename: V
authors.initials: V
authors.lastname: Manjuladevi
authors.forename: R
authors.initials: R
authors.lastname: Pratibha
authors.forename: N V
authors.initials: NV
authors.lastname: Madhusudana