Vladimir M. Kotov

Comprehensive DIA-MS profiling of clot and plasma proteomes across immune- and coagulation-deficient mouse models

A Biswas, Vladimir M. Kotov, P Nilgirwar, D Davray et autres

Introduction Immune checkpoint inhibitors (ICIs) targeting PD-1/PD-L1 have transformed cancer therapy but are associated with increased thromboembolic risk. Emerging evidence suggests that ICI-induced thrombosis arises through immune-mediated vascular inflammation, complement activation, and platelet hyperreactivity, rather than direct effects on coagulation factors. However, …

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Optical properties of nickel oxide epitaxial nanofilms grown on LiNbO3 substrates and diode structures based on them

Stanislav V. Averin, Valery A. Luzanov, В. А. Житов, L. Zakharov et autres

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Distortions of Transfer Functions of an Acousto-Optic Spatial Filter by a Decrease in the Sound Frequency

Vladimir M. Kotov

Absract We examine the features of the formation of the transfer functions of an acousto-optic spatial filter made of a uniaxial gyrotropic crystal operating in tangential diffraction geometry. It is shown that a decrease in the sound frequency is accompanied by distortions …

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Поляризационные особенности пространственного акустооптического фильтра, основанного на дифракции в два симметричных брэгговских порядка

Vladimir M. Kotov, Stanislav V. Averin, А. А. Зенкина, А. С. Белоусова

Исследованы поляризационные свойства двухканального пространственного акустооптического фильтра, основанного на дифракции в два симметричных брэгговских порядка. Продемонстрирован вариант, когда в процессе фурье-обработки изображения контуры в разных каналах образуются в разных поляризациях, причем формирование контуров происходит на разных акустических частотах. Вариант подтвержден экспериментально на …

Polarization Features of a Spatial AO Filter Based on Diffraction in Two Symmetric Orders

Vladimir M. Kotov, Stanislav V. Averin, А. А. Зенкина, А. С. Белоусова

Abstract The polarization properties of a two-channel spatial AO filter based on diffraction into two symmetric Bragg orders have been studied. A regime is demonstrated where during Fourier processing of an image, the contours in different channels are formed in different polarizations …

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Differentiation and Integration of Images in Different Channels Using One Acousto-Optic Filter

Vladimir M. Kotov, Stanislav V. Averin, А. А. Зенкина, А. С. Белоусова et autres

Abstract We report a theoretical and experimental investigation of two-dimensional Fourier processing of an image using two channels when the image is differentiated in one channel and integrated in the other. Both operations are carried out by one acousto-optical (AO) spatial frequency …

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Three-channel Fourier processing of optical images using a single acousto-optic filter

Vladimir M. Kotov, Stanislav V. Averin, А. А. Зенкина, А. С. Белоусова

Subject of study. This study investigated the possibility of the two-dimensional Fourier processing of images in three channels using a spatial frequency filter. Aim of study. This study aimed to develop a three-channel spatial frequency filter based on an acousto-optic cell made …

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Metal–Semiconductor–Metal–ZnS/GaP Detectors for the UV and Visible Spectrum with Electrically Tunable Spectral Photosensitivity

Stanislav V. Averin, В. А. Житов, L. Zakharov, Vladimir M. Kotov et autres

Abstract High-quality ZnS epitaxial layers are grown on GaP semiconductor substrates by the MOCVD method. Photodetectors for the visible and UV parts of the spectrum based on interdigital Schottky metal–semiconductor–metal (MSM) barrier contacts to the ZnS/GaР semiconductor structure have been fabricated and …

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Metal–semiconductor–metal detectors ZnS/GaP for the ultraviolet and visible part of the spectrum with electrically tunable spectral photosensitivity

Stanislav V. Averin, В. А. Житов, L. Zakharov, Vladimir M. Kotov et autres

High-quality ZnS epitaxial layers grown on GaP semiconductor substrates by MOCVD method. Photodetectors of the visible and UV parts of the spectrum based on new interdigitated Schottky barrier metal–semiconductor–metal (MSM) contacts to semiconductor structure ZnS/GaP. The detectors exhibit low dark current values. …

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Controlled Conversion of Rays with Different Wavelengths Using Acousto-Optic Bragg Diffraction

Vladimir M. Kotov

Abstract A method is proposed for controlled convergence of beams with different wavelengths by means of acousto-optical (AO) Bragg diffraction. A method for calculating the parameters of the diffraction of two beams by one acoustic wave in a uniaxial crystal, which makes …

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УПРАВЛЯЕМОЕ СВЕДЕНИЕ ЛУЧЕЙ С РАЗНЫМИ ДЛИНАМИ ВОЛН ПОСРЕДСТВОМ АКУСТООПТИЧЕСКОЙ БРЭГГОВСКОЙ ДИФРАКЦИИ

Vladimir M. Kotov

A method is proposed for controlled convergence of beams with different wavelengths by means of acousto-optical (AO) Bragg diffraction. A method for calculating the parameters of the diffraction of two beams by one acoustic wave in a uniaxial crystal, which makes it …

Amplitude Modulation of Two-Color Radiation at Double Sound Frequency

Vladimir M. Kotov, A N Bulyuk

Abstract For amplitude modulation of two-color optical radiation at a double sound frequency, it is proposed to use a device consisting of two identical acousto-optic (AO) cells operating at the same sound frequency and providing Bragg matching of two optical beams with …

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