RT Journal Article
T1 Enhancement by polydispersity of the biaxial nematic phase in a mixture of hard rods and plates
A1 Martínez-Ratón, Yuri
A1 Cuesta, José A.
AB The phase diagram of a polydisperse mixture of uniaxial rodlike and platelike hard parallelepipeds is determined for aspect ratios κ=5 and 15. All particles have equal volume, and polydispersity is introduced in a highly symmetric way. The corresponding binary mixture is known to have a biaxial phase for κ=15, but to be unstable against demixing into two uniaxial nematics for κ=5. The phase diagram for κ=15 is qualitatively similar to that of the binary mixture, regardless of the amount of polydispersity, while for κ=5 a sufficient amount of polydispersity stabilizes the biaxial phase. This provides clues for designing an experiment to observe this long searched biaxial phase.
PB The American Physical Society
SN 0031-9007 (Print)
SN 1079-7114 (Online)
YR 2002
FD 2002-10-28
LK https://hdl.handle.net/10016/7036
UL https://hdl.handle.net/10016/7036
LA eng
NO 4 pages, 2 figures.-- PACS nrs.: 64.70.Md, 61.20.Gy, 64.75.+g.-- ArXiv pre-print available at: http://arxiv.org/abs/cond-mat/0206576
NO Final publisher version available Open Access at: http://gisc.uc3m.es/~cuesta/papers-year.html
NO This work is part of the research Project No. BFM2000-0004 (DGI) of the Ministerio de Cienciay Tecnología (Spain). Y.M. R. is supported by a postdoctoral grant of the Consejería de Educación de la Comunidad de Madrid (Spain).
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RD 27 jul. 2024