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Чистяков, Александр Александрович

Организационные подразделения

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Институт нанотехнологий в электронике, спинтронике и фотонике

Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе. Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.

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Александр Александрович

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RADIOVISION IN THE TERAHERTZ RANGE: PROBLEMS AND PROSPECTS
(НИЯУ МИФИ, 2023) Chistyakov, A. A.; Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maksimov, E. M.; Martynov, I. L.; Osipov, E. V.; Kuzishchin, Yu. A.; Plekhanov, A. A.; Осипов, Евгений Валерьевич; Козловский, Константин Иванович; Котковский, Геннадий Евгеньевич; Мартынов, Игорь Леонидович; Максимов, Евгений Михайлович; Чистяков, Александр Александрович; Акмалов, Артём Эдуардович
An analysis of the current state of research and development in the fi eld of radiovision for the terahertz range of electromagnetic radiation was carried out in the work. Various sources of terahertz radiation are considered: photoconductive antennas, IMPATT diodes, Schottky diodes, and others, as well as modern video cameras for this range and their main characteristics for recording and studying THz images in various spectral regions. The results of studies of the intensity distribution in THz radiation beams at diff erent wavelengths for photoconductive antennas using THz radiovision, as well as the possibilities of studying scattering processes during refl ection and transmission of THz radiation for various materials, are presented.
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Photovoltaic Properties of Thin Films Based on a Composite of PbS Quantum Dots and a Fullerene Derivative: A Complex Ester of Butyric Acid
(2020) Aleksandrov, A. E.; Tameev, A. R.; Zvaigzne, M. A.; Chistyakov, A. A.; Чистяков, Александр Александрович
© 2020, Allerton Press, Inc.Abstract: A study is made of the effect a surface ligand’s molecules have on the photoconductivity and photovoltaic effect in thin solid layers of structures based on PbS quantum dots. Thin solid layers are prepared of both quantum dots and bulk heterojunctions of a blend of quantum dots and fullerene derivative ([6,6]-phenyl-C(61)butyric acid ester (PCBM)). An exponential dependence of photoconductivity on the length of ligands is obtained for the quantum dot films, and the photovoltaic effect displays a strong dependence on the length of a ligand. In contrast, the effect the length of a ligand has on current–voltage characteristics and charge carrier mobility was not observed in bulk heterojunction structures with quantum dots. Physical reasons for the observed phenomena are discussed.
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An advanced approach to control the electro-optical properties of LT-GaAs-based terahertz photoconductive antenna
(2020) Buryakov, A. M.; Ivanov, M. S.; Khusyainov, D. I.; Mishina, E. D.; Nomoev, S. A.; Vasil'evskii, I. S.; Vinichenko, A. N.; Kozlovskii, K. I.; Chistyakov, A. A.; Номоев, Сергей Андреевич; Васильевский, Иван Сергеевич; Виниченко, Александр Николаевич; Козловский, Константин Иванович; Чистяков, Александр Александрович
© 2019 Elsevier LtdThis work reports on an advanced approach to the design of THz photoconductive. antenna (PCA). The LT-GaAs thin films used for the PCA fabrication were synthesized by MBE method on GaAs (100) substrate by adjusting the As pressure, As/Ga fluxes ratio, growth/annealing temperatures and annealing time. These parameters crucially affect electro-optical properties of the PCA samples as evidenced by the THz radiation power and time-domain spectroscopy measurements. The annealing temperature of 670 °C was found to be optimal for constructing a PCA possessing high amplitude of the THz radiation over the spectral range up to 1 THz at the resonance of 0.1 THz. The comparison of this PCA with the reference ZnTe crystal reveals a 2-fold increase in THz power. Furthermore, this antenna attains a 1.5-, 3-, and 2-fold increase in THz power, photocurrent efficiency, and actuating dc BV, as compared with the commercial ZOMEGA antenna. These results pave the way towards the creation of highly efficient LT-GaAs-based PCAs.
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Enhancement of characteristics of field asymmetric ion mobility spectrometer with laser ionization for detection of explosives in vapor phase
(2020) Kostarev, V. A.; Kotkovskii, G. E.; Chistyakov, A. A.; Akmalov, A. E.; Костарев, Виталий Алексеевич; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович; Акмалов, Артём Эдуардович
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.Ion mobility spectrometry instrumentation today is widespread in the area of transport security and counterterrorism. This method of detection of explosive substances is highly appreciated for the existence of portable detectors capable of detecting concentrations of 10−13 –10−14 g/cm3 at atmospheric pressure using traditional ionization methods including corona discharge and beta radiation. However, low vapor pressure of some explosives imposes requirements on limit of detection (LOD) down to 10−15 –10−16 g/cm3 . In this paper we compare a radioactive63 Ni ionization source with a laser ionization source and reveal the parameters of laser ionization of a group of explosives, namely trinitrotoluene (TNT), cyclotrimethylene-trinitramine (RDX), cyclotetramethylene-tetranitramine (HMX) and pentaerythritol tetranitrate (PETN), which can reduce the limit of detection of portable devices. A laser ionization source can provide a higher signal to noise ratio than radioactive63 Ni at optimal intensity of laser radiation for PETN and HMX of 3 × 107 W/cm2 and 2.5 × 107 W/cm2, respectively. Limits of detection were estimated: 3 × 10−15 g/cm3 for RDX, 8 × 10−15 g/cm3 for PETN and less than 3 × 10−15 g/cm3 for HMX. These results are promising to further improve the capabilities of detectors of low volatility explosives without sacrificing portability, light weight and reasonable cost of the laser source.
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Enhancement of spontaneous emission of semiconductor quantum dots inside one-dimensional porous silicon photonic crystals
(2020) Dovzhenko, D.; Martynov, I.; Samokhvalov, P.; Osipov, E.; Lednev, M.; Chistyakov, A.; Nabiev, I.; Мартынов, Игорь Леонидович; Самохвалов, Павел Сергеевич; Осипов, Евгений Валерьевич; Чистяков, Александр Александрович; Набиев, Игорь Руфаилович
Controlling spontaneous emission by modifying the local electromagnetic environment is of great interest for applications in optoelectronics, biosensing and energy harvesting. Although the development of devices based on one-dimensional porous silicon photonic crystals with embedded luminophores is a promising approach for applications, the efficiency of the embedded luminophores remains a key challenge because of the strong quenching of the emission due to the contact of the luminophores with the surface of porous silicon preventing the observation of interesting light-matter coupling effects. Here, we experimentally demonstrate an increase in the quantum dot (QD) spontaneous emission rate inside a porous silicon microcavity and almost an order of magnitude enhancement of QD photoluminescence intensity in the weak light-matter coupling regime. Furthermore, we have demonstrated drastic alteration of the QD spontaneous emission at the edge of the photonic band gap in porous silicon distributed Bragg reflectors and proved its dependence on the change in the density of photonic states. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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About impurities in cyclotrhylmethylentrinitramine and the possibility of detecting its vapor
(2020) Akmalov, A. E.; Chistyakov, A. A.; Kotkovskii, G. E.; Kostarev, V. A.; Kulintsov, A. V.; Lavrinenko, K. N.; Акмалов, Артём Эдуардович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Костарев, Виталий Алексеевич; Лавриненко, Кирилл Николаевич
© 2020 SPIECyclotrhylmethylentrinitramine (RDX) is one of the most dangerous explosive substances. The presence of impurities in this explosive may be important for its determination as residual traces at the scene of incidents, as well as in the quick analysis of passengers and luggage by ion mobility spectrometers. In the work industrially manufactured RDX samples, that were not undergone any purification, were investigated by gas chromatography-mass spectrometry method. The attention was paid to search precursors and possible technological admixtures. On the basis of received chromatograms and mass spectra it was established the presence in the analyzed RDX samples of urotropin, acetic anhydride, acetic acid, triazine and octogen. The mass content of the substances was estimated. Special attention was paid to the products of RDX biodegradation, which can occur both in aerobic and anaerobic environments during its storage. The quantitative content of RDX biodegradation products in samples under study was estimated. Sorption of chemically pure and industrially manufactured RDX vapors on a concentrator from metal meshes were carried out. By the method of thermodesorption mass spectrometry the composition and differences of the concentrated samples were analyzed. Recommendations for taking into account the results obtained when working with vapors and traces of RDX by ion mobility spectrometers were given.
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Portable aerosol collector with liquid circulation mounted on a drone
(2020) Akmalov, A. E.; Belenok, S. K.; Kadyrova, A.; Kirillova, V.; Kostarev, V. A.; Kotkovskii, G. E.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Беленок, Сергей Константинович; Кириллова, Вероника Олеговна; Костарев, Виталий Алексеевич; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович
© 2020 SPIEEarly detection of pathogens is crucial for ensuring safe living conditions. Conventional sampling methods do not ensure the sustainability of captured microorganisms. Cyclone-based liquid absorptive samplers are the most promising devices in this regard. Most samplers have limited application scope as they are intended for laboratories. In the study we developed a special liquid-based sampler for mounting on a drone. A structure and base values of a cyclone collector were determined. The chosen design provides maximum particle capturing efficiency in terms of low air flow rate and small size of the collector. Projected capturing efficiency for particles of the size of 1mсm is approximately 20%, for particles of the size bigger than 2,5mсm is 100%. Mathematical modeling proved the correctness of theoretical considerations. This made it possible to design and fabricate a prototype of a sampler device which also includes a fan, a peristaltic pump, valves, a sensor for liquid levels monitoring, a display for operation mode controlling. Outdoor sampling on a drone has successfully proved performance efficiency at close to zero temperatures. A study on capturing efficiency was carried out by sampling sucrose aerosol with a fluorescein dye in a microbiological safety box. Specific efficiency of our sampler is 1,18 [relative units/(litre/min)], which is over twice s.e. of 0,43 [r.u./(l/min)] of existing laboratory devices. The device provides for the issuance of collected samples on standard immunochemical test strips for the analysis of adenovirus, rotavirus, influenza and other respiratory diseases with a full analysis time of 10 minutes.
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THz imaging with spectral resolution for identification of traces of explosives
(2020) Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maksimov, E. M.; Plekhanov, A. A.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Котковский, Геннадий Евгеньевич; Козловский, Константин Иванович; Максимов, Евгений Михайлович; Плеханов, Андрей Александрович; Чистяков, Александр Александрович
© 2020 SPIEThe presence of characteristic peaks in the terahertz (THz) absorption spectra of many organic substances and the active development of the technology for manufacturing video cameras based on microbolometric matrices create an increased interest in methods for identifying explosive compounds using THz imaging with simultaneous recording of spectral information. The results of relevant studies can be used in the development of security systems. THz images (taking into account the spectral information in each pixel) were obtained in this work by passing radiation through a sample based on hexogen (RDX) microcrystals deposited on a polyethylene (PE) film. A photoconductive antenna was used as a source of broadband radiation in the range from 0.5 THz to 2.5 THz. Spectral resolution was provided using a Fourier spectrometer based on a Michelson interferometer. The images were recorded using a THz video camera based on a microbolometric matrix. The possibility of identifying RDX microcrystals using color visualization of spectral information in the frequency range of one of the characteristic RDX peaks (~0.8 THz) has been demonstrated.
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СПОСОБ РЕГИСТРАЦИИ СИГНАЛОВ ЛЮМИНЕСЦЕНЦИИ И РАССЕЯНИЯ ОТ АЭРОЗОЛЬНЫХ ЧАСТИЦ ПРИ ИХ ВОЗБУЖДЕНИИ В СТРУЕ И СИСТЕМА ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ
(2023) Котковский, Г. Е.; Чистяков, А. А.; Мартынов, И. Л.; Кузищин, Ю. А.; Акмалов, А. Э.; Осипов, Е. В.; Осипов, Евгений Валерьевич; Кузищин, Юрий Александрович; Мартынов, Игорь Леонидович; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович; Акмалов, Артём Эдуардович
Настоящее изобретение относится к области контрольно-измерительной техники и касается способа регистрации сигналов люминесценции и рассеяния от аэрозольных частиц при их возбуждении в струе. Способ включает засвечивание возбуждающим лучом воздушного потока струи с аэрозолем, сбор и разделение на, по меньшей мере, три канала оптических сигналов рассеяния и люминесценции в блоке спектрального разделения и направление сигналов на приемники оптического излучения. При этом ось сбора оптических сигналов рассеяния и люминесценции перпендикулярна оси возбуждающего луча. При осуществлении способа производят формирование воздушного потока струи аэрозоля в анализируемом объеме проточно-оптической камеры, в которую воздушные потоки поступают из побудителя расхода воздуха. Скорость, оптимальную для пролёта в анализируемом объёме аэрозольных частиц определённых размеров, определяют в электронном блоке управления на основании данных, поступающих с приемников оптического излучения. Технический результат заключается в повышении чувствительности и обеспечении возможности детектирования аэрозольных частиц малого сечения. 2 н. и 9 з.п. ф-лы, 1 ил.
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Sol-Gel Fabrication and Luminescence Properties of Multilayer Eu-Doped BaTiO3-SiO2 Xerogel Nanostructures
(2019) Karnilava, Yu. D.; Kholov, P. A.; Raichenok, T. F.; Tikhomirov, S. A.; Gaponenko, N. V.; Martynov, I. L.; Osipov, E. V.; Chistyakov, A. A.; Kargin, N. I.; Гапоненко, Николай Васильевич; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Чистяков, Александр Александрович; Каргин, Николай Иванович
With the use of sol-gel method BaTiO3-SiO2 multilayer structures were fabricated on glass or fused silica substrates employing dipping or spinning procedure. The photonic stop band was observed in the reflection and transmission spectra of the multilayer structure annealed at 450 degrees C. It is redshifted with an increase of the thicknesses of BaTiO3 and SiO2 layers. For structures comprising Eu-doped BaTiO3 layers of different thicknesses photoluminescence with the main band at 614 nm was detected. It is characterized with the double-exponential decay with the lifetimes of about 0.5 ms and 1.1 ms which do not depend significantly on the photonic stop band position.