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Dipole-induced, first-order phase transitions of nano-rod monolayers |
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| Authors: | Joohee Lee Qi Wang |
| Institution: | a Department of Mathematics & Institute for Advanced Materials, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3250, USA b Department of Mathematics, Florida State University, Tallahassee, FL 32306, USA c Department of Mathematics and Statistics, Old Dominion University, Norfolk, VA 23529, USA |
| Abstract: | The isotropic-nematic transition of nano-rod monolayers with fore-aft symmetry is second order, in stark contrast to the first-order phase transition explained by Onsager L. Onsager, Ann. (N.Y.) Acad. Sci. 51 (1949) 627] for rods in three dimensions. Here we show that the coupling of a dipole potential to excluded volume is sufficient to re-instate a first-order phase transition of rods confined to two dimensions. |
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