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Акмалов, Артём Эдуардович

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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Акмалов

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Артём Эдуардович

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Detection of vapors of explosives by field asymmetric ion mobility spectrometry method with laser ionization
(2019) Akmalov, A. E.; Chistyakov, A. A.; Kotkovskii, G. E.; Kostarev, V. A.; Акмалов, Артём Эдуардович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Костарев, Виталий Алексеевич
© 2019 SPIE.The features of laser ionization of trinitrotoluene and hexogen at registration of ionization products by field asymmetric ion mobility spectrometer were investigated in this paper. The optimal range of intensity to obtain the maximum ion current was determined, and it was shown that composition of ions of explosives is changed with the change of intensity. The values of intensity and radiation at which it is possible to obtain spectra of nonlinear ion mobility with different composition of RDX and TNT ions were determined, which is promising for increasing the selectivity of registration. It was shown that ion peaks of TNT and RDX at laser ionization are characterized by low nonlinear mobility coefficients in comparison with a radioactive source based on Ni63, which indicates a more selective mechanism of laser ionization of these explosives at atmospheric pressure.
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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.
Только метаданные
Detection of objects hidden behind various barriers using the THz radiovision method
(2022) Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maximov, E. V.; Martynov, I. L.; Osipov, E. V.; Plekhanov, A. A.; Kuzishchin, Yu. A.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Котковский, Геннадий Евгеньевич; Козловский, Константин Иванович; Максимов, Евгений Михайлович; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Плеханов, Андрей Александрович; Кузищин, Юрий Александрович; Чистяков, Александр Александрович
Только метаданные
Preconcentration of vapors of low-volatile explosives for ion mobility spectrometry
(2021) Akmalov, A. E.; Chistyakov, A. A.; Kotkovskii, G. E.; Kostarev, V. A.; Lavrinenko, K. N.; Акмалов, Артём Эдуардович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Костарев, Виталий Алексеевич; Лавриненко, Кирилл Николаевич
© 2021 SPIEThe issue of civil security and prevention of terrorist attacks in public places is becoming more and more actual every year. In this regard, increased attention is paid to detection of explosives. Of particular interest are methods to detect trinitrotoluene (TNT), hexogen (RDX), penthrite (PETN), octogen (HMX). Recently, gas-analytical, nuclear-physical, electromagnetic, terahertz, and biological detection methods have been developed. The lowest detection limit was achieved using gas-analytical methods, namely the non-linear ion mobility spectrometry method, with a limit of detection of 5.10-15 g/cm3. However, the question of feasibility of using these methods in real conditions is increasingly raised. There is an opinion that it is much more effective to detect explosives by traces than by vapor. In this work we investigated the possibility of detecting vapors of pure explosives with low saturated pressure of vapors. By the example of pure and faсtory hexogen, using the method of thermal-programmed desorption and mass spectrometry, it was shown that it is hexogen vapor, and not technological impurities or additives with saturated vapor pressure exceeding the saturated vapor pressure of hexogen, that are registered in the gas phase by ion mobility spectrometry. A technique was developed and proposed to concentrate RDX vapors. Using temperature-programmed desorption, the minimal time of concentration and surface fill factor were determined.
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УСТРОЙСТВО ДЛЯ ФОРМИРОВАНИЯ ИЗОБРАЖЕНИЙ В ТЕРАГЕРЦОВОЙ ОБЛАСТИ СПЕКТРА
(2021) Чистяков, А. А.; Котковский, Г. Е.; Мартынов, И. Л.; Козловский, К. И.; Кузищин, Ю. А.; Максимов, Е. М.; Акмалов, А. Э.; Осипов, Е. В.; Пашкевич, А. А.; Плеханов, А. А.; Плеханов, Андрей Александрович; Осипов, Евгений Валерьевич; Пашкевич, Александра Андреевна; Кузищин, Юрий Александрович; Козловский, Константин Иванович; Акмалов, Артём Эдуардович; Максимов, Евгений Михайлович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Мартынов, Игорь Леонидович
Предлагаемая полезная модель относится к приборам для визуализации объектов в области субмиллиметрового диапазона электромагнитных волн, конкретно, к устройствам для формирования от исследуемого объекта отраженного широкополосного терагерцового излучения. Техническим результатом предлагаемого устройства является существенное увеличение контраста изображения объекта, причем как его поверхностного слоя, так и его структур внутри объекта в широком спектральном диапазоне ТГц частот и на различном расстоянии от устройства до объекта. Этот результат достигается тем, что в устройстве для формирования изображений объекта в терагерцовой области спектра, содержащем фотопроводящую антенну с гиперполусферической линзой и оптический блок ТГц облучения объекта с фокусирующей линзой, фокусирующая линза выполнена плосковыпуклой с плоскостью, обращенной к гиперполусферической линзе, причем расстояние между задними фокальными плоскостями гиперсферической линзы и фокусирующей линзы установлено в пределах от 0 до 50 см, а диаметр D фокусирующей линзы, ее числовая апертура NA2, числовая апертура NA1 и диаметр d гиперполусферической линзы удовлетворяют следующему соотношению: Предлагаемая полезная модель позволяет разработать и внедрить в различных технологиях безопасности устройства, в которых достигнуто существенное увеличение контраста изображения структуры различных объектов, частично прозрачных для ТГц излучения как на их поверхности, так и в приповерхностном слое, что существенно расширяет технические возможности применения предлагаемого устройства в системах безопасности на гражданских и промышленных предприятиях.
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Portable aerosol sampler with liquid phase for collection of biopathogens at subzero temperatures
(2021) Akmalov, A. E.; Belenok, S. K.; Kostarev, V. A.; Kotkovskii, G. E.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Беленок, Сергей Константинович; Костарев, Виталий Алексеевич; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович
© 2021 SPIEAerosol samplers with a recirculating liquid film are promising devices for remote biological monitoring. The presence of the liquid film provides a high survival rate for biological objects. The relatively simpler design allows portability to the sampler, which will make it possible to conduct tests outside the laboratory. In this study an analytical expression, describing the capturing efficiency of aerosol particles in the water film, taking into account the friction forces arising from interaction of water and air in a cyclone-based aerosol collector, was obtained. A new element, took over from the theory of centrifugal sprayers - a vortex chamber, was added to the theory and design of the collector. It allows increasing the initial angular moment of the elements of air volume entering the collector, which leads in appropriately an increase of maximal height of rising liquid film and particle capturing efficiency. To analyze the obtained expressions, graphs of particle capturing efficiency on basic parameters of modified cyclone collector and volumetric air flow were calculated. The graphs made it possible to determine the optimal geometric parameters for the portable cyclone-based collector. The introduced dependence on viscosity made it possible to estimate more accurately the efficiency of the device at various temperatures (including negative temperatures). For the selected parameters, graphs particle capturing efficiency were plotted. Water-alcohol solution and Novec 1230 fluid were used as fluids capable of operating at subzero temperatures. To check the operability of the sampler, tests were carried out to collect samples of sprayed inactivated adenovirus in a microbiological safety box at the Gamaleya Institute. The results of tests are discussed.
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Spectral identification of traces of explosives in reflected terahertz radiation
(2019) Akmalov, A. E.; Aksenov, E. A.; 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
© 2019 SPIE.The work is devoted to the influence of scattering of terahertz (THz) radiation by hexogen particles (RDX) in powdery samples on their transmission and reflection spectra. A terahertz radio-vision installation with spectral resolution was used to determine experimentally THz spectra of RDX. For samples with small RDX particles (the typical particle size is 100 μm), characteristic peaks at 0.8 THz and 1.06 THz are observed in absorption spectra despite scattering, that can be used to identify this substance. For large hexogen particles (a typical particle size is 450 μm), experiments and numerical simulation showed that even the most intense peak at 0.8 THz is not observed in absorption spectra, and the spectra are mainly due to the scattering effect and its depending on the wavelength of radiation. The reflection spectra of RDX layers (particle size is about 100 μm) qualitatively differ from the reflection spectra of RDX crystals and are formed as a result of absorption during propagation of THz radiation in the particle layer. Thus, the substance can be identified by absorption spectra in a reflection scheme.
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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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Photon counting mode for advanced real-time detection of bioaerosols
(2021) Tkachuk, A. P.; Verdiev, B. I.; Alatirev, A. G.; Akmalov, A. E.; Chistyakov, A. A.; Kotkovskii, G. E.; Kuzishchin, Y. A.; Martynov, I. L.; Osipov, E. V.; Pashkevich, A. A.; Акмалов, Артём Эдуардович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Кузищин, Юрий Александрович; Мартынов, Игорь Леонидович; Осипов, Евгений Валерьевич; Пашкевич, Александра Андреевна
© 2021 SPIECurrently, one of the most important application of flow cytometry is the real-time analysis of aerosols, in particular, to ensure biosafety. In most cases, such analysis is aimed at detecting fluorescent signals from aerosol particles corresponding to the light emission of tryptophan and nicotinamide adenine dinucleotide (NADH). Further development of the method is largely related to the improvement of the light detecting systems for recording and processing of fluorescence and scattered light signals. In this work, a comparative analysis of flow cytometers for bioaerosols detection based on photo-multiplier tubes (PMT) and avalanche photodiodes (APD) operating in analog and photon-counting modes was carried out. The limit of detection (LOD) of bioaerosols, response time and ability to detect particles with low scattering and fluorescence cross section were calculated and examined. The calculations were carried out for the well-known optical scheme of fluorescence detection based on discrete photodetectors and dichroic mirrors combined with an air flow chamber equipped with elliptical and spherical mirrors. An ultraviolet light emission diode (LED) was used as a model source of exciting radiation. To estimate the optical properties of aerosol particles, experimental results obtained for a model bovine serum albumin bioaerosol and published data on various other bioaerosols were used. The calculation of the total number of fluorescent photons, emitted by particles of various sizes while passing the flow chamber was carried out. The obtained data were compared with parameters of photodetectors operating in analog and photon-counting modes. The critical particle size was determined for the effective registration in a photon-counting mode. Considering the size distribution of aerosol particles, it was concluded that application of the photon-counting mode will reduce the LOD of bioaerosols by more than an order of magnitude.
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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.