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Information × Registration Number 0220U103720, 0115U004249 , R & D reports Title Atomic, molecular and nanoscale structures in gradient laser fields: mechanisms of formation, optical and laser properties, application in spectroscopy, laser technology and sensorics. popup.stage_title Head Yatsenko Leonid P, Доктор фізико-математичних наук Registration Date 16-11-2020 Organization Institute of Physics of National Academy of Sciences of Ukraine popup.description2 The object of study - atoms, molecules and nanoparticles in the light field; holographic phase lattices, original holographic material for their manufacture, carbon materials and nanostructures of precious metals. Purpose — study of the motion of atoms, molecules and nanoparticles in the field of counter modulated light waves, improvement of the holographic method of manufacturing 1D and 2D photonic crystals of different types of symmetry on nanocomposites containing nanoparticles of metals and metal oxides. Research of realization of effects of strengthening of SERS from various metal-graphene structures. Research methods - description of changes in the internal state of atoms in their interaction with laser radiation by modeling Monte Carlo wave function. Description of the mechanical motion of atoms using Newton's equations. The application of the Monte Carlo method to calculate the statistical characteristics of an ensemble of atoms. Methods of spectroscopy and holography. Results — according to the results of a theoretical study of the formation of two-dimensional structures of atoms and molecules in a stochastic field, the necessary parameters of laser radiation were found. The formation of structures has been demonstrated by the obtained distribution of atoms and molecules in the phase plane (coordinate-velocity). — based on the results of the study of the luminescent properties of photonic crystals activated by dyes, biological and chemical sensors based on these photonic crystals were analyzed and developed. 1D and 2D photonic crystals of polymer-NP were fabricated both using ex situ synthesized NPs, which were introduced into the light-sensitive nanocomposite, and by in situ synthesis of NP metal from prespatially distributed in the polymer matrix metal precursor. It has been shown that the use of PMS allows to obtain structures with the same symmetry, but different distribution of polymer and NP. Product Description popup.authors Yezhov Pavlo V Gryn Volodymyr O Lyamets Oleksandr K Mamuta Oleksandr D Romanenko Victor I Smirnova Tetiana M Fesenko Olena M Khodakovsyy Volodymyr M Yaremkevych Andriy D Yatsenko Leonid P popup.nrat_date 2020-11-16 Close