In this paper a new approach that enables to analyze the structure and reconstruct a rough surface with inhomogeneities is suggested, for which the heights distribution from the trough to the upper point is about 20 nm. For such diagnostics, carbon nanoparticles are used, which are characterized by luminescence in the yellow-green region of the spectrum and such a value of the dipole moment, which makes it possible to control the distribution of nanoparticles over the surface even in the presence of an external electric field. As a probe for diagnosing nanoparticles, it is suggested to use structured light with a significant longitudinal field component, which largely removes the limitations imposed by the transverse resolution of the optical system. The recorded luminescence of carbon nanoparticles with dipole moment oriented parallel to the longitudinal component of the field, enabled not only to reproduce the location of maxima and minima of the surface with an accuracy of 12.9%, but also to reconstruct the landscape of the studied surface itself at a level of 6.76% error.
An interference method for measuring relative phase shift between orthogonally linearly polarized beams at total internal reflection with accuracy of 0.6 rad was proposed at this paper. We experimentally showed that it is impossible to determine the relative longitudinal displacement between beams with orthogonal linear polarizations at total internal reflection by the phase difference in the interferometer. The method developed by us could be useful in measurement of the reflected beam phase, to control the surface homogeneity, and to measure the refraction index of the prism.
Theoretical approach for the red blood cell (erythrocyte) motion, controlled by the action of evanescent wave, generated by the total internal reflection at the inner cell surface, is proposed. Model situation describing the conditions for transverse motion of erythrocyte caused by the transverse spin momentum is presented. Motion peculiarities of a red blood cell in an isotonic solution depending on illumination conditions are estimated. Considered approach enables to expand the possibilities for the microobjects motion control in biomedical applications.
The use of carbon particles for the correlation and optical diagnostics of speckle fields obtained by diffraction on a surface with a roughness is suggested in this research. The optical properties of carbon nanoparticles, such as luminescence and absorption in the visible spectrum, as well as particle sizes of about hundreds nanometers, are the determining criteria for using these particles as an optical field probe. The obtained optical speckle field was analyzed by a 2D Hilbert transform to restore the phase of the entire object with high accuracy.
This paper is devoted to the analysis of the state of physical (optical) science, highlighting the prospects for the further development of the most relevant trends that are embodied in communication systems, micro- and nanobiology, nanomedicine, high-tech communication devices, macro- and microphysics.
The aim of this study was to use the spectrophotometry method to develop a diagnostic algorithm for blood studies and the content of douglas deepening in women with ovarian tumors. A comparative analysis of the blood of healthy women and patients with ovarian cancer revealed significantly greater optical anisotropy of the latter. Qualitative studies of polarization microscopic blood images revealed a very developed microcrystalline structure. Based on the study of blood and puncture and douglas deepening of healthy women and patients with benign and malignant tumors of the ovaries, using the method of laser polarimetry, experimentally developed and clinically tested photometric and polarization criteria indicating the presence of malignancy of the tumor.
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