UV isomerisation in nematic elastomers as a route to photo-mechanical transducer J. Cviklinski, A.R. Tajbakhsh and E.M. Terentjev Eur. Phys. J. E, 9 5 (2002) 427-434 Published online: 28 January 2003 DOI: 10.1140/epje/i2002-10095-y