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Information × Registration Number 0219U001492, 0118U001515 , R & D reports Title Graphene and metal- graphene nanostructures for surface enhanced Raman spectroscopy and thermostatic efficient technologies. popup.stage_title Head Fesenko Olena Marianivna, Registration Date 31-01-2019 Organization Institute of physics NASU popup.description2 Object of the study- is the research and development of new high-performance graphene and metal-graphene substrates for enhancement of the optical signal for surface enhanced Raman spectroscopy (SERS). The aim of the study is research and development of new low-cost substrates based on graphene and grapheme-metal nanostructures to amplify the optical signal in Raman spectroscopy. Investigation of optical signal amplification effects in Raman spectroscopy of combinational scattering by graphene and metal graphene nanostructures. Theoretical investigations of lattice vibrations, thermal transport and mechanisms of surface-enhanced Raman scattering in graphene and graphene/gold nanostructures. Methods of investigation: Surface enhanced Raman spectroscopy (SERS), IR spectroscopy, simulation. Theoretical and practical results, novelty. The research objects were nanoparticles of Silver in combination with flakes of reduced graphene oxide, which were proposed by us for the Surface?enhanced vibrational spectroscopy, in particular, to detect small amounts of Adenine and Thymine as components of deoxyribonucleic acid. During the stage, "Characterization and testing of the nanostructures based on the graphene, graphene oxide and metal by methods of vibrational spectroscopy", the thermal conductivity of graphene water dispersions and water dispersions of nanostructures of graphene-nanostars Au nanostructures at various temperatures and component ratios were investigated. The value of the effective heat conductivity of dry nanoflakes has been evaluated. The temperature dependences of the thermal conductivity of nanoflakes of graphene and graphene with gold nanostars have been obtained. It is established that the higher values of the thermal conductivity of the graphene- Au nanostars nanostructures are the result of the reinforcing effect of the gold nanoparticles on substrate, which is formed as a result of a compatible sedimentation with graphene during precipitation of nanoflakes from water solution. These results can be used in the future to develop effective thermoregulation technologies. It has also been shown that the deposition of graphene nanoflakes on a gold substrate leads to an increase in the Raman scattering of graphene compared with glass. The effectiveness of the implementation: Increase in labor productivity and competitively of the goods, increase the sensitivity of detection and quality of visualization. Product Description popup.authors Будник Оксана Петрівна Корсканов Валерій Васильович Фесенко Олена Мар'янівна Чайка Микола Степанович Яремкевич Андрій Дмитрович popup.nrat_date 2020-04-02 Close