Search academic texts

Information × Registration Number 0211U008765, 0111U004614 , R & D reports Title Enhancement effects of Raman scattering and light emission by semiconductor nanostructures popup.stage_title Head Vlakh Mykhailo Yakovych, Доктор фізико-математичних наук Registration Date 03-10-2011 Organization Institute of Semiconductor Physics of National Academy of Sciences of Ukrain popup.description2 At the given stage of the project structures with nanostructured layers of the noble metals necessary for the further realisation of a technique of supersensitive optical diagnostics semiconductor, molecular and biological nanosystems on the basis of strengthening of intensity of their characteristic not elastic (combinational) dispersion of light are developed. By a variation of a nominal thickness of a film, from 40 to 6 nanometers, and annealing temperature, from 250 to 550оС, nanoisland ensembles have been obtained of different size and surface density. Measurement of spectral dependences of optical reflection and transsmission of such nanostructures on frequency of a plasmon maximum have allowed to establish absorption from the average nanoisland size. Thus, at the given stage of performance of the project, substrates for huge enhancement of Raman scattering from organic molecular layers and inorganic clusters, deposited onto the laterally ordered gold and silver islands with the geometrical sizes which provide frequency of a plason resonance in spectral area from 400 to 800 nanometers are created. Preliminary research also done on optical and SERS properties of colloidal metal nanoparticles in the specified spectral range. Product Description popup.authors Джаган Володимир Миколайович Юхимчук Володимир Олександрович popup.nrat_date 2020-04-02 Close