Bacteriorhodopsin Based Films as a Nanomemory

Photonic molecular devices have attracted tremendous interests because of their small size and light weight. The biologic protein bacteriorhodopsin (bR) and its derivatives are among the most promising candidates for potential applications in biomolecular photonics due to their unique properties [5]. In this investigation, film based on bR in Gelatin-polyvinil alcohol matrix of 0.001% (w/v) was provided and then it was illuminated by two orthogonal beams, green laser (vertical) and red laser (horizontal) for 30 minutes, in what follow, it was illuminated by blue laser (vertical) for 30 minutes. Their absorbance spectrums were demonstrated. Finaly, the morphology of the surface of the bR films in different polymer matrices were considered by using atomic force microscope (AFM).