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Polymer network-induced ordering in a nematogenic liquid: a Monte Carlo study | | C Chiccoli
; P Pasini
; G Skacej
; C Zannoni
; S Zumer
; | | Date: |
30 Apr 2002 | | Journal: | Phys Rev E, 65 (5 Pt 1), 051703 | | Abstract: | In this Monte Carlo study we investigate molecular ordering in a nematogenic liquid with dispersed polymer networks. The polymer network fibers are assumed to have rough surface morphology resulting in a partial randomness in anchoring conditions, while the fiber direction is assumed to be well defined. In particular, we focus on the loss of long-range aligning capability of the network when the degree of disorder in anchoring is increased. This process is monitored by calculating relevant order parameters and the corresponding 2H nuclear magnetic resonance spectra, showing that the aligning ability of the network is lost only for completely disordering anchoring conditions. Moreover, above the nematic-isotropic transition temperature surface-induced paranematic order is detected. In addition, for perfectly smooth fiber surfaces with homeotropic anchoring conditions topological line defects can be observed. | | Source: | PubMed, pmid12059573 | | Services: | Forum | Review | Favorites | |
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