Персона: Потешин, Сергей Станиславович
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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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Сергей Станиславович
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- ПубликацияТолько метаданныеInfluence of multiplexing conditions on artefact signal and the signal-to-noise ratio in the decoded data in Hadamard transform ion mobility spectrometry(2020) Sarycheva, A.; Adamov, A.; Poteshin, S. S.; Lagunov, S. S.; Sysoev, A. A.; Адамов, Алексей Юрьевич; Потешин, Сергей Станиславович; Лагунов, Сергей Сергеевич; Сысоев, Алексей АлександровичIn Hadamard transform ion mobility spectrometry (HT IMS), the signal-to-noise ratio is always lower for non-modified pseudorandom sequences than for modified sequences. Since the use of non-modified modulating pseudorandom sequences is strategically preferable from a duty cycle standpoint, we investigated the change in the interference signal when transitioning from non-modified modulating sequences to sequences modified by the addition of 1,3,5 and 7 zeros. The interfering signal in HT IMS with modified pseudorandom sequences was shown to be mainly random noise for all the cases except for modifying by incorporation of 1 zero. For standard samples of tetraalkylammonium halides, modulation by non-modified pseudorandom sequences is beneficial in the case of small numbers of averaged spectra (below similar to 40 averaged spectra compared to any modified pseudorandom sequences except for 1 zero modified and below similar to 200 averaged spectra compared to signal averaging ion mobility spectrometry) and worsens the signal-to-noise ratio in the case of large numbers of averaged spectra. Contrarily, modulation by modified pseudorandom sequences is beneficial for any number of averaged spectra, except for very small ones (below 15 averaged spectra compared to modulation by non-modified sequences). Pseudorandom sequence modified with 1 zero incorporation is beneficial in the case of below similar to 400 averaged spectra compared to any modified and non-modified pseudorandom sequences. The signal-to-noise ratio in conventional signal averaging mode ion mobility spectrometry is affected by random noise, whereas the HT IMS with non-modified pseudorandom sequences was demonstrated to be primarily affected by a systematic noise-like artefact signal. Because noise-like artefact signals were found to be reproducible, predicting models for interference signals could be generated to improve signal-to-noise ratio. This is significant because non-modified modulating sequences are limited by their poor signal-to-noise ratio. This improvement would increase the viability of non-modified modulating sequences which are preferred because of their higher sample utilization efficiency.
- ПубликацияТолько метаданныеInvestigation by simulation of the RF carpets for the transport of ions at atmospheric pressures(2020) Poteshin, S.; Burykina, A.; Adamov, A.; Sysoev, A.; Потешин, Сергей Станиславович; Адамов, Алексей Юрьевич; Сысоев, Алексей Александрович© The Author(s) 2020.Ion funnels, quadrupole, and multipole are well-known ion optic methods for transportation of ions. However, the methods are suitable for pressures below 30–40 Torr. The main loss of ions occurs in an inlet of mass spectrometer at atmospheric pressure. This work offers a focusing system, which employs a fine-structure electrode ion carpet. The focusing efficiency of fine-structure electrode was investigated by computer simulation methods and it was compared with theoretical estimation. The methods demonstrated good agreement with each other that promises a reliability of results. The authors found an optimal fine-structure electrode ion carpet configuration (electrodes width of 10 µm), which demonstrates suitable focusing efficiency and can be implemented in practice.
- ПубликацияТолько метаданныеInitiation of Artificial Radioactivity of Impurity Elements in a Lead Cathode under Conditions of a Glow Discharge(2023) Timashev, S. F.; Savvatimova, I. B.; Poteshin, S. S.; Ryndya, C. M.; Kargin, N. I.; Тимашев, Сергей Федорович; Савватимова, Ирина Борисовна; Потешин, Сергей Станиславович; Рындя, Сергей Михайлович; Каргин, Николай Иванович
- ПубликацияОткрытый доступСРАВНЕНИЕ РЕЗУЛЬТАТОВ АБЕРРАЦИОННОГО ПОДХОДА ДЛЯ РАСЧЕТА ЭЛЕКТРОСТАТИЧЕСКИХ МАСС-АНАЛИЗАТОРОВ С МОДЕЛИРОВАНИЕМ В SIMION(НИЯУ МИФИ, 2025) ОДИНЦОВ, Д. Д.; ПОТЕШИН, С. С.; Потешин, Сергей Станиславович; Одинцов, Даниил ДмитриевичПроведено сравнение результатов, полученных с помощью программы расчёта, в основе которой лежит аберрационная теория для ионно-оптических систем, с результатами моделирования в Simion. Сравнение проводилось как для отдельных компонентов таких как цилиндрические электростатические сектора и дрейфовые промежутки, так и для их комбинаций, образующих вместе многооборотный секторный времяпролетный масс-анализатор. Результаты сравнения свидетельствуют о возможности применимости программы для расчёта многооборотных масс-анализаторов и поиска оптимальных геометрий.
- ПубликацияТолько метаданныеA simple soft ionization approach for GC-MS assisted by capillary array(2023) Poteshin, S. S.; Zhilyaev, D. I.; Borisov, R. S.; Потешин, Сергей СтаниславовичElectron ionization (EI) is the most widely used ionization method in gas chromatography/mass spectrometry (GC-MS). This method possesses a lot of advantages including versatility for various classes of volatile and semi volatile organic compounds, high sensitivity, structure informativity and reproducibility, production of database searchable mass spectra. On the other hand there are a number of compounds, which molecular ions are not stable enough to produce corresponding peaks in EI mass spectra, making it difficult to determine structures of compounds not presented in databases. A new approach allowing easy implementation of EI in a molecular beam formed by a capillary assembly is proposed for discussion in this communication. Primary experimental results achieved using this approach demonstrate its possibility to produce suitable for database search mass spectra with increased intensity of molecular ion peak. © 2022 Elsevier B.V.
- ПубликацияТолько метаданныеThe Effect of Pseudorandom Sequence Systematicity on Signal-to-Noise Ratio in Hadamard Transform Ion Mobility Spectrometry(2021) Sarycheva, A. P.; Adamov, A. Y.; Lagunov, S. S.; Lapshov, G. V.; Poteshin, S. S.; Sysoev, A. A.; Адамов, Алексей Юрьевич; Лагунов, Сергей Сергеевич; Лапшов, Глеб Валерьевич; Потешин, Сергей Станиславович; Сысоев, Алексей Александрович© 2021, Pleiades Publishing, Ltd.Abstract: The formation of an artefact signal can greatly influence the sensitivity of the drift tube ion mobility spectrometer (IMS) in multiplex mode (Hadamard transform mode). This signal is a systematic error of multiplexed signal modulation via pseudorandom sequence (PRS), and it can appear as false peaks, or it can be similar to interference or noise. The artefact signal usually cannot be differentiated from the latter by standard mathematical processing algorithms. In Hadamard transform ion mobility spectrometry, the presence of an artefact signal when utilizing standard data processing algorithms results in the following situation. Even though each individual recovered spectrum demonstrates a noticeable improvement in signal-to-noise ratio due to forward Hadamard transform, this improvement is reduced or even disappears completely for averaged recovered multiplexed spectra when compared to the conventional IMS averaging mode. A noticeable improvement in signal-to-noise ratio can be achieved by modifying PRSs by incorporating fixed numbers of additional zeros after every element (modulation bin) of the conventional PRSs. The improvement can be explained because the addition suppresses systematic noise-like artefact signals. In this paper, we analyze the observed signal-to-noise ratio in averaged spectra for simulated via theoretical model and experimental data for various multiplexing modes of Hadamard transform. We also analyzed the influence of modulating PRSs’ “randomness” on signal-to-noise ratio in the resulting spectra in the case of non-modified sequences. We chose the standard deviation of PRS’s autocorrelation function, or the autocorrelation coefficient, to serve as the “randomness” criterion. For modulation with PRSs modified with additional zeros, we observed a considerable correlation between theoretical and experimental values of relative improvement of the signal-to-noise ratio. This indirectly proves the existence of constraints in Hadamard multiplexing mode when a statistically significant amount of individual spectra is averaged. This also leads to the necessity of improved strategies of data multiplexing and decoding for further sensitivity improvement. The choice of optimal PRS is part of the strategy’s search. One of the choice’s criterion is the minimization of the artefact signal. The data presented in this paper suggests that the autocorrelation coefficient as the criterion of choice for PRS is justified but not sufficient: it leaves the problem of PRS selection when searching for a strategy for sensitivity improvement in Hadamard transform ion mobility spectrometry.
- ПубликацияОткрытый доступТРАНСПОРТ ИОНОВ В УЗКИХ ГАЗОНАПОЛНЕНЫХ КАНАЛАХ(НИЯУ МИФИ, 2025) ПОТЕШИН, С. С.; ОДИНЦОВ, Д. Д.; Потешин, Сергей Станиславович; Одинцов, Даниил ДмитриевичРассмотрены эффективные ионно-транспортные устройства в виде узких каналов, которые существенно уменьшают газовую нагрузку на насосы в интерфейсах масс-спектрометров.
- ПубликацияТолько метаданныеThe Phenomenon of Artificial Radioactivity in Metal Cathodes under Glow Discharge Conditions(2022) Timashev, S. F.; Savvatimova, I. B.; Poteshin, S. S.; Kargin, N. I.; Sysoev, A. A.; Ryndya, S. M.; Тимашев, Сергей Федорович; Савватимова, Ирина Борисовна; Потешин, Сергей Станиславович; Каргин, Николай Иванович; Сысоев, Алексей Александрович; Рындя, Сергей Михайлович© 2022, Pleiades Publishing, Ltd.Abstract: It is shown that artificial radioactivity can be initiated under conditions of a glow-discharge plasma. When analyzing the isotopic and elemental composition in the near-surface region of Pd and Ni cathodes, initial and those treated for 40 hours under conditions of deuterium- or protium-containing plasma, changes were detected, respectively, in the isotopic ratios of Pt and Pb impurity isotopes in the Pd cathode and of Fe, Cu, and Znin the Ni cathode, as well as a significant reduction in the amount of these impurity elements in the cathodes and the formation of W isotopes in the Pd cathode. Possible nuclear processes that cause the established artificial radioactivity are considered.
- ПубликацияОткрытый доступПространственная и временная фокусировка ионных сгустков во времяпролетном масс-спектрометре с лазерной ионизацией твердой фазы(НИЯУ МИФИ, 2010) Потешин, С. С.; Потешин, Сергей Станиславович; Сысоев, А. А.
- ПубликацияОткрытый доступComparison of the results of the aberration approach for the calculation of electrostatic TOF mass analyzers with simulation in SIMION(2026) Odintsov, D. D.; Poteshin, S. S.; Потешин, Сергей Станиславович