J. Phys. II France
Volume 4, Numéro 1, January 1994
Page(s) 103 - 110
DOI: 10.1051/jp2:1994117
J. Phys. II France 4 (1994) 103-110

Observation of quasi two-dimensional nematic order in a system of rigid rods

Michael R. Fisch1 and Charles Rosenblatt2

1  Department of Physics, John Carroll University, University Heights, Ohio 44118, U.S.A.
2  Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079, U.S.A.

(Received 29 July 1993, revised in final form 14 September 1993, accepted 5 October 1993)

Phospholipid tubules were suspended on the surface of an aqueous solution. At low density, a rarefied nematic phase with weak orientational order was observed. At high density the tubules phase separated into a well ordered high density phase and an isotropic phase with virtually no tubules present. Results are compared to theories for two-dimensional ordering of hard rods.

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