Springer LINK: The European Physical Journal B - Abstract Volume 3 Issue 2 (1998) pp 189-196

The European Physical Journal B

ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)

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Abstract Volume 3 Issue 2 (1998) pp 189-196

Transfer of smectic films to a solid substrate by the method of Maclennan

I.V. Chikina (1) (a), N. Limodin (2), A. Langlois (2), M. Brazovskaia (2), C. Even (2), P. Pieranski (2) (b)

(1) Laboratoire Léon Brillouin CEA Saclay-CNRS, 91191 Gif-sur-Yvette, France
(2) Laboratoire de Physique des Solides, Université Paris-Sud, Bâtiment 510, 91405 Orsay Cedex, France

Received: 25 November 1997 / Received in final form: 30 January 1998 / Accepted: 9 March 1998

Abstract: Free-standing smectic films are transferred onto a solid substrate by the method of Maclennan. When examined with an atomic force microscope, the transferred films show a large number of small holes. In order to explain the genesis of these defects, the transfer process is analysed both experimentally and theoretically. In particular, shapes of free films spanned between the flat substrate and a circular frame are calculated and it is shown that during the transfer process films are submitted to an increase of their surface area. During experimental studies of the transfer process, stable and unstable forms of the catenoid-shaped free films, spanned between the substrate and the circular frame, are observed. Their existence is explained theoretically.

PACS. 61.30.-v Liquid crystals - 68.15.+e Liquid thin films

(a) Current address: Institute of Microelectronics Technology of Russian Academy of Science, 142432 Chernogolovka, Russia.
(b) email: pawel@lps.u-psud.fr

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