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Information × Registration Number 0211U000795, 0110U004585 , R & D reports Title Investigation of optical and nonlinear optical properties of nanostructures based on noble metals and semiconductors: development of new high sensitive techniques for studying and testing the nanostructures. popup.stage_title Head Brodyn Mykhailo Semenovych, Registration Date 24-02-2011 Organization Institute of physics NASU popup.description2 The studies have been carried out for improvement of the technology of synthesis of metal nanostructure layers on dielectric substrates (silicate glass). Using this technology nanostructure films of Fu, AG, and Pd have been synthesized. Morphology of the films has been studied by means of raster electron microscope. The films of Au and Ag have island structure with typical size 30 to 150 nm depending on the Pd films technological conditions. The Pd films were both in the form of islands and with rough surface 30 - 80 nm. Value and sine nonlinear-optical susceptibility ((?=532nm, ?=10nm). Have been obtained for Au ?(3) = -4*10-5 esu and Pd rough films ?(3) = -3*10-5esu. Pd and Cu films synthesid now did not show high optical nonlinearity at ?=532nm and light intensity lowe damage threshhod. Theoretical studies of sound generation by means of ultra-fast laser pulses (1) as well as monochromatic laser radiation modulated by acoustic wave (2) depending on size of the particles and their position on the surface or in the volume of the substrate. It was shown that in the first case the form of the acoustic pulse in the matrix is connected with dynamic electron temperature in metal particle. It makes it possible to study relaxation processes of the hot electrons from acoustic signal form. In the second case it was observed high sensitivity of the acoustic wave amplitude upon metal particles form and polarization of laser radiation. Product Description popup.authors Бондар Микола Володимирович Борщ Анатолій Олександрович Бродин Михайло Семенович Буднік Петро Іванович Волков Владислав Іванович Гергель Олег Васильович Ляховецький Володимир Романович Руденко Валентин Іванович Стьопкін Вівктор Іванович Томчук Петро Михайлович Федорович Ростислав Дмитрович popup.nrat_date 2020-04-02 Close