Abstract
A presentation of experimental results suggesting fluidlike, spinodal and tricritical nature of the isotropic — nematic transition are given. Results presented based on broad-band dielectric spectroscopy and strong electric field induced changes of dielectric permittivity. Results above as well the obtained systematic changes of the temperature discontinuity of the isotropic — nematic transition suggest the possible existence of a tricritical point which may be experimentally reached due the application of negative pressures. The presented picture for the I-N transition correlates with the recent general model for liquid-liquid transition proposed by Tanaka [Phys. Rev. E68, 6968 (2000)].
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Rzoska, S.J., Drozd-Rzoska, A. (2002). On the Tricritical Point of the Isotropic — Nematic Transition in a Rod-Like Mesogen Hidden in the Negative Pressure Region. In: Imre, A.R., Maris, H.J., Williams, P.R. (eds) Liquids Under Negative Pressure. NATO Science Series, vol 84. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0498-5_11
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DOI: https://doi.org/10.1007/978-94-010-0498-5_11
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