19 research outputs found
Linear and Nonlinear Optical Properties of Aligned Elongated Silver Nanoparticles Embedded in Silica
Імуногістохімічне виявлення судинного епітеліального ростового фактору в корі великих півкуль головного мозку при порушеннях кровообігу
Порушення кровопостачання мозку – одне з актуальних питань сучасної медицини, що обумовлено, як тяжкістю наслідків кожного конкретного випадку хвороби, так і рівнем показників захворюваності, що сягають пандемії, а смертність від цієї патології становить понад 20% і займає друге місце після серцево-судинних захворювань. Сьогодні зміни при ішемії мозку розглядаються як складний багатовекторний процес зі специфічною кінетикою на перебіг якого можна впливати, а не як одноманітну подію, як вважалось ще 20 років тому
Picosecond third-order nonlinearities in organic materials and chalcogenide glasses
SIGLEAvailable from British Library Document Supply Centre- DSC:DX180544 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Broadband tunable nonlinear optical response in plasmonic metamaterials -INVITED
Nanostructured materials with tunable nonlinear optical response are of great interest for different applications in nanophotonics.In thiswork wereport the results ofa comprehensive study onthe nonlinear optical properties of two kinds of plasmonic metamaterials, i.e., honeycomb nanoprism arrays and multilayer hyperbolic metamaterials, which proved to havea very rich spectrum of parameters(asmetamaterials morphology and composition, wavelength and polarization of an input beam)to exploitforcontrollingtheir nonlinear responseover a broad spectral range
Broadband tunable nonlinear optical response in plasmonic metamaterials -INVITED
Nanostructured materials with tunable nonlinear optical response are of great interest for different applications in nanophotonics. In this work we report the results of a comprehensive study on the nonlinear optical properties of two kinds of plasmonic metamaterials, i.e., honeycomb nanoprism arrays and multilayer hyperbolic metamaterials, which proved to have a very rich spectrum of parameters (as metamaterials morphology and composition, wavelength and polarization of an input beam) to exploit for controlling their nonlinear response over a broad spectral range
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Second harmonic generation signal from type I collagen fibers grown in vitro.
We present a study of the optical second-order nonlinearity of type I collagen fibers grown in vitro via second harmonic generation (SHG) experiments and analyze the observed polarization-resolved SHG signal using previously reported SHG analytical expressions obtained for anisotropic tissue. Our results indicate that the effective second-order nonlinearity measured in the grown fibers is one order of magnitude lower than that of native collagen fibers. This is attributed to the formation of loose and dispersive fibrillar networks of thinner collagen fibrils that constitute the reassembled collagen fibers. This is confirmed by scanning electronic microscopy (SEM) imaging and the polarization dependence of the SHG signal. The measured values of the anisotropy parameter ρ of the reassembled collagen fibers are found to be similar to that obtained for native fibers on the relevant sub-µm scale