Abstract
A phenomenon of giant (up to 1010 times) enhancement in rate of aggregation of fractal nanostructures, caused by light in silver hydrosoles of and spectral features of its photoemission nature were discovered [1]. That means that rate of photo-stimulated aggregations must be determined by the value of photo-emission current from the particles. Similar conclusion was made in experiments, where increase of photo-coagulation rate of Ag nano-particles in aerosols was found to be accompanied by the increase of photoelectron emission [2]. We have shown that photo-stimulated aggregation of nano-particles into fractal structures in colloids is stipulated not only by one-photon, but by two-photon photo-effect too, even at intensities of illuminating light on the order of solar.
© 1998 IEEE
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