Simple to manufacture polysaccharide films containing a silver salt, from which silver nanostructures can be produced in situ by light irradiation, were investigated for possible biosensing applications. The silver nanostructures were patterned in situ within a film and cast from a liquid solution of gellan gum, using a compact time-resolved fluorescence microscope. The position and time of irradiation, made using a semiconductor laser in CW mode, were computer controlled. Evidence for their formation was obtained via UV-vis spectroscopy, AFM and SEM-EDAX.
- silver nanostructures
- polysaccharide films
- biosensing applications
Hungerford, G., Toury, M., McLoskey, D., Donaldson, N., & Holmes-Smith, A. S. (2012). In situ formation of silver nanostructures within a polysaccharide film and application as a potential biocompatible fluorescence sensing medium. Soft Matter, 8(3), 653-659. https://doi.org/10.1039/C1SM06813J