Персона:
Акмалов, Артём Эдуардович

Организационные подразделения

Организационная единица

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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Теперь показываю 1 - 10 из 21

Только метаданные
High-performance aerosol collector with liquid phase circulation and pre-concentration of particles
(2019) Verdiev, B. I.; Gushchin, V. A.; Tkachuk, A. P.; Akmalov, A. E.; Kotkovskii, G. E.; Stolyarov, S. V.; Chistyakov, A. A.; Акмалов, Артём Эдуардович; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович
© 2019 SPIE.Testing the environment for bio-aerosols is an important feature of biosafety in the modern world. It is often necessary to collect aerosols from large areas in a short time, which requires outstanding collection efficiency, sufficiently high flow rate of incoming air and ability to maintain the viability of the collected samples. The paper presents the results of creating an effective sampling device capable of operating at airflow rates of 4000 liters per minute. The device consists of two functional parts - a virtual impactor and a cyclone collector with liquid phase of deposition. We present all the necessary calculations and algorithm to simulate parameters of the impactor. The sampling device was tested using dry and liquid dispersed particles with a diameter of 0.5 to 5 μm. We demonstrated that at a flow rate of about 4000 l / min, the efficiency of collecting of particles is more than 20% of the total aerosol mass, and at a flow rate of more than 300 l / min, this value exceeds 60 %. The proposed device supports the viability of the collected microorganisms. The paper also presents the results of testing the device at infrastructure objects. The device is portable, with easy settings for sampling and cleaning, and can be controlled remotely over a network.
Только метаданные
Use of dopants for detection of vapors of explosives by laser field asymmetric ion mobility spectrometer
(2022) Akmalov, A. E.; Chistyakov, A. A.; Kotkovskii, G. E.; Kostarev, V. A.; Акмалов, Артём Эдуардович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Костарев, Виталий Алексеевич
Открытый доступ
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.
Только метаданные
Detection of trace mm- And sub-mm particles of organic substances using THz imaging with spectral resolution
(2021) Akmalov, A. E.; Kotkovskii, G. E.; Kozlovskii, K. I.; Maksimov, E. M.; 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
© 2021 SPIEThe presence of peculiarities in terahertz spectra of many organic compounds allows the use of THz imaging and spectroscopy for the detection of various hazardous and explosive substances. This work is devoted to the study of the detection of trace amounts of 1,3,5-Trinitro-1,3,5-triazinane (RDX) in the form of particles localized in millimeter and submillimeter sizes using THz imaging with spectral resolution. As a result of the work, images of trace amounts of RDX in reflected THz radiation were obtained. The contrast in these images made it possible to detect single particles of the powdery substance. The difference in contrast for RDX and polyethylene (PE) in the obtained terahertz images makes it possible to use THz imaging with spectral resolution not only for detection, but also for the identification of chemical compounds.
Только метаданные
Application of a cyclone collector with a recirculating liquid phase for concentrating microparticles, localized as traces on surfaces
(2019) Akmalov, A. E.; Chistyakov, A. A.; Kotkovskii, G. E.; Turbin, D. S.; Акмалов, Артём Эдуардович; Чистяков, Александр Александрович; Котковский, Геннадий Евгеньевич; Турбин, Денис Сергеевич
© 2019 SPIE.The study of using a cyclone collector with a liquid recirculation phase for collecting microparticles of TNT (trinitrotoluene) explosive, located in the form of traces on solid and fibrous surfaces was conducted in this work. Fragments of fibrous nonwoven material, as well as flax fabric fragments were used as a basis on which TNT powder was randomly distributed. The TNT sample area was about 900 cm2. The cyclone collector with recirculating liquid phase originally designed for aerosol particles collection was used as a device for pre-concentration of explosives particles. Inlet air velocity was equal to 500 cm3 /min. Quantitative measurements of collected TNT amount were provided by gas chromatography - mass-spectrometry method. Experiments to compare the efficiency of cyclone collector sampling to the currently used methods of explosives microparticles collection - by wiping of surfaces and by dry filtration - were carried out. Cyclone collector showed high collection efficiency, amounting to 91% by weight of originally TNT spread on the surface that is more than 3 times higher than efficiencies of the wiping method (24% of the total mass of the trace) and the dry filtration method (23% of the total mass of the trace).
Только метаданные
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.
Только метаданные
Detection of explosives in vapor phase by field asymmetric ion mobility spectrometry with dopant-assisted laser ionization
(2022) Kostarev, V. A.; Kotkovskii, G. E.; Chistyakov, A. A.; Akmalov, A. E.; Костарев, Виталий Алексеевич; Котковский, Геннадий Евгеньевич; Чистяков, Александр Александрович; Акмалов, Артём Эдуардович
© 2022 Elsevier B.V.Detection of low-volatile explosives in concentrations below 10−14 g/cm3 is a great challenge for portable ion mobility spectrometers (IMS) and field asymmetric IMS (FAIMS). We study the capabilities of FAIMS detector with ultraviolet laser ionization combined with organic additives (dopants) toluene and 1-methylnaphtalene to sense nitro-explosives: trinitrotoluene (TNT) and low-volatile cyclonite (RDX) and nitropentaerythritol (PETN). Differential mobility coefficients were measured for target ion peaks of TNT, RDX and PETN. Presence of dopants in the sample results in multiple growth of ion yield at laser intensities lower than 2 × 107 W/cm2. Limits of detection with dopant-assisted laser ionization were determined: 4.7 × 10−16 g/cm3 for RDX and 9.8 × 10−15 g/cm3 for PETN. Obtained results propose a way to further improve sensitivity of detectors along with improvement of portability of current laser-based FAIMS prototypes by using less powerful and smaller lasers.
Только метаданные
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.
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.
Открытый доступ
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.