| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 266.19 KB | Adobe PDF | |||
| 340.59 KB | Adobe PDF |
Orientador(es)
Resumo(s)
Using optical microscopy, phase shifting interferometry, and atomic force microscopy, we characterize the undulated structures which appear in the meniscus of freestanding ferroelectric smectic-C* films. We demonstrate that these periodic structures correspond to undulations of the smectic-air interface. The resulting striped pattern disappears in the untilted smectic-A phase. The modulation amplitude and wavelength of the instability both depend on meniscus thickness. We study the temperature evolution and propose a model that qualitatively accounts for the observations.
Descrição
Palavras-chave
Liquid-Crystals Layer Structure Films Strain
Contexto Educativo
Citação
LOUDET, J. C.; DOLGANOV, P. V.; PATRÍCIO, P.; SAADAOUI, H.; CLUZEAU, P. - Undulation Instabilities in the Meniscus of Smectic Membranes. Physical Review Letters. ISSN 0031-9007. Vol. 106, n.º 11 (2011).