Determination of photoinduced and intrinsic birefringences in PMMA/DR13 guest-host film


Autoria(s): Dall'Agnol, Fernando Fuzinatto; Shimizu, Flavio Makoto; Giacometti, Jose A.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

18/03/2015

18/03/2015

21/07/2014

Resumo

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

We report measurements and analysis of photoinduced birefringence (PIB) in polymeric stretched films, hence, with an intrinsic birefringence (IB) associated to the polymeric chain orientation. It was found that transmittance signal is dependent on the angle between the film stretching direction and the probe light polarization, increasing or decreasing relatively to IB signal. Theoretical analysis considered that light propagates through the film having a photoinduced and intrinsic birefringences with independent optical axes. The transmittance signal dependence on the film angle is correctly accounted and our approach could give a phenomenological elucidation to the effect known as the inverse relaxation effect. (c) 2014 Elsevier B.V. All rights reserved.

Formato

102-105

Identificador

http://dx.doi.org/10.1016/j.cplett.2014.05.082

Chemical Physics Letters. Amsterdam: Elsevier Science Bv, v. 608, p. 102-105, 2014.

0009-2614

http://hdl.handle.net/11449/116491

10.1016/j.cplett.2014.05.082

WOS:000340202600019

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

Chemical Physics Letters

Direitos

closedAccess

Tipo

info:eu-repo/semantics/article