Citation:
S. O. Korposh, M. Y. Sichka, I. I. Trikur, Y. P. Sharkan, D. H. Yang, S. W. Lee and J. J. Ramsden, Films based on bacteriorhodopsin in sol-gel matrices, Proceedings of SPIE Volume 5956, Paper Number 595616, 2005.
Abstract:
The bacteriorhodopsin film in gelatin matrixes which are used as sensitive
elements of integrated optic and fibre-optic sensors of various vapor and gases
components will not be able to carry out the chemical control of aqueous
solutions. In the given paper the results of technological development of
obtaining the bacteriorhodopsin (bR) films in a sol-gel matrix are represented.
The films are obtained in a broad thickness range (from 0.5 to 20 microns) with
various bR concentrations and photosensitize additives. The optimal
technological conditions of obtaining of uniform films with given optical
parameters are defined. The surface morphology and cross section of the obtained
films was studied using an AFM and SEM. The films have a reasonable surface
roughness (~ 100 nm) and a uniform distribution of the purple membrane fragments
in the nanostructured sol-gel glass matrix along the films surface and
thickness. The transmission spectrums have the characteristic for bR the
absorption band, the value of which depends on bR concentration and
technological features of the films deposition. The investigated photosensitive
properties of the obtained films and influence on them of chemical components of
aqueous solutions, allow recommending the thin bR films in sol-gel matrixes for
creation of planar waveguides in the role of components of the chemical sensors
of liquid solutions.