UV-Manipulation of Order and Macroscopic Shape in Nematic Elastomers

Simple item page
dc.creatorHogan, P. M.
dc.creatorTajbakhsh, A. R.
dc.creatorTerentjev, E. M.
dc.date2001-11-22
dc.date.accessioned2026-07-07T06:30:27Z
dc.date.available2026-07-07T06:30:27Z
dc.descriptionA range of monodomain nematic liquid crystal elastomers containing differing proportions of photo-isomerisable mesogenic moieties, which turn from a rod-like to a kinked shape upon ultraviolet (UV) irradiation, was studied. Depending on the proportion and positional role of the photo-sensitive groups in the crosslinked polymer network, different types and magnitudes of response were found. The principle consequence of such photo-isomerisation is the destabilisation of the nematic phase, whose order parameter depends on temperature in a near-critical fashion. Accordingly, the effect of UV-irradiation is dramatically enhanced near the critical temperature, with the associated reduction in the nematic order parameter manifesting as a change in the macroscopic shape of the elastomer samples, producing a large uniaxial contraction. Theoretical analysis of this phenomenon gives a good quantitative agreement with experiment.
dc.description10 pages, 11 EPS figures; Revtex 4
dc.identifierhttps://arxiv.org/abs/cond-mat/0111430
dc.identifierhttp://arxiv.org/abs/cond-mat/0111430
dc.identifierPhys. Rev. E 65, 041720 (2002)
dc.identifierdoi:10.1103/PhysRevE.65.041720
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98340
dc.subjectSoft Condensed Matter
dc.subjectMaterials Science
dc.titleUV-Manipulation of Order and Macroscopic Shape in Nematic Elastomers
dc.typetext

Files

Collections

arXiv