Radioelectronics. Nanosystems. Information Technologies.最新文献_第2页

Current distribution in comb structures of bipolar and heterobipolar microwave transistors taking into account the metallization tracks resistance 考虑到金属化轨道电阻的双极和异双极微波晶体管梳状结构中的电流分布

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-05-19 DOI: 10.17725/rensit.2024.16.317

В.А. Сергеев, Александр М. Ходаков, Илья В. Фролов, Александр А. Казанков

{"title":"Current distribution in comb structures of bipolar and heterobipolar microwave transistors taking into account the metallization tracks resistance","authors":"В.А. Сергеев, Александр М. Ходаков, Илья В. Фролов, Александр А. Казанков","doi":"10.17725/rensit.2024.16.317","DOIUrl":"https://doi.org/10.17725/rensit.2024.16.317","url":null,"abstract":"Представлен краткий анализ причин неоднородного и неустойчивого распределения тока между элементарными транзисторами в гребенчатых структурах (ГС) биполярных (БТ) и гетеробиполярных (ГБТ) СВЧ транзисторов. Получено выражение для тока, втекающего в элементарный транзистор ГС, с учетом сопротивления эмиттерной дорожки металлизации. Приведена оценка влияния технологического разброса сопротивлений эмиттерных дорожек металлизации на неравномерность распределения полного тока транзистора между элементарными транзисторами. Показано, что сопротивление эмиттерных дорожек металлизации играет стабилизирующую роль и приводит к повышению тепловой устойчивости токораспределения в ГС, при этом наименее устойчивым к тепловому пробою будет элементарный транзистор ГС с наименьшим сопротивлением эмиттерной дорожки и наибольшим тепловым сопротивлением. Предложены рекомендации по выравниванию и повышению устойчивости токораспределения в ГС БТ и ГБТ.","PeriodicalId":517520,"journal":{"name":"Radioelectronics. Nanosystems. Information Technologies.","volume":"119 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141124204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Terahertz plasmon modes excitation in a graphene square microcavity 石墨烯方形微腔中的太赫兹等离子体模式激发

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-05-19 DOI: 10.17725/rensit.2024.16.367

Ольга В. Полищук, Денис В. Фатеев, Вячеслав В. Попов

{"title":"Terahertz plasmon modes excitation in a graphene square microcavity","authors":"Ольга В. Полищук, Денис В. Фатеев, Вячеслав В. Попов","doi":"10.17725/rensit.2024.16.367","DOIUrl":"https://doi.org/10.17725/rensit.2024.16.367","url":null,"abstract":"Рассматривается графеновый квадрат, расположенный на границе раздела между двумя полупространствами с разными диэлектрическими постоянными. Проблема исследована в трехмерной постановке задачи с использованием самосогласованного электродинамического подхода, основанного на методе интегрального уравнения. Решена задача о рассеянии линейно поляризованной терагерцовой волны на графеновом квадрате. Рассчитанные спектры сечений экстинкции, поглощения и рассеяния демонстрируют возбуждение серии плазмонных мод в графеновом квадрате. Обсуждаются свойства различных типов плазмонных мод.","PeriodicalId":517520,"journal":{"name":"Radioelectronics. Nanosystems. Information Technologies.","volume":"112 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141124512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling and analysis of temperature and thermomechanical stress distributions in a multi-chip electronic module 多芯片电子模块中的温度和热机械应力分布建模与分析

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-25 DOI: 10.17725/j.rensit.2024.16.215

A. Khodakov, Vitaliy I. Smirnov, Viacheslav A. Sergeev, R. Tarasov

{"title":"Modeling and analysis of temperature and thermomechanical stress distributions in a multi-chip electronic module","authors":"A. Khodakov, Vitaliy I. Smirnov, Viacheslav A. Sergeev, R. Tarasov","doi":"10.17725/j.rensit.2024.16.215","DOIUrl":"https://doi.org/10.17725/j.rensit.2024.16.215","url":null,"abstract":"A mathematical thermomechanical model of a multi-chip electronic module (MEM) containing three silicon dies of high-power transistors fixed with a conductive adhesive on a copper plate placed on a radiator is considered in the form of a system of equations of thermal conductivity and thermoelasticity with specified boundary conditions. As a result of computational studies of the model in the COMSOL Multiphysics software environment, distributions of temperature and thermomechanical stresses in the MEM structural elements were obtained depending on the heating power, the thickness of the adhesive and the size of the model defect in the contact connection of one of the MEM crystals with a copper plate in the form of voids in the adhesive layer. It is shown that voids in the adhesive layer lead to a sharply non-uniform temperature distribution over the crystal area and thermomechanical shear stresses in the contact layer that exceed the maximum permissible values for the adhesive. It has been established that thermomechanical stresses decrease with increasing thickness of the adhesive layer and increase with increasing size of the defect(voids) in this layer. The simulation results are in good agreement with the results of measuring the thermal impedance of power transistor crystals using the modulation method, which indicates the correctness and adequacy of the developed model.","PeriodicalId":517520,"journal":{"name":"Radioelectronics. Nanosystems. Information Technologies.","volume":"4 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140653003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing a microchip for exosome isolation with the ability to simultaneously impregnate it with imatinib: an in vitro analysis 设计一种可同时浸渍伊马替尼的外泌体分离微芯片：体外分析

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/j.rensit.2024.16.223

Amir Monfaredan, Fakher Rahim, K. Kozhobekov, G. Tavoosidana, M. Modarressi, Alaviyehsadat Hosseininasab, Ali-Akbar Aghajani-Afrouzi, Mahdi Sh. Sabet, Elahe Motevaseli

{"title":"Designing a microchip for exosome isolation with the ability to simultaneously impregnate it with imatinib: an in vitro analysis","authors":"Amir Monfaredan, Fakher Rahim, K. Kozhobekov, G. Tavoosidana, M. Modarressi, Alaviyehsadat Hosseininasab, Ali-Akbar Aghajani-Afrouzi, Mahdi Sh. Sabet, Elahe Motevaseli","doi":"10.17725/j.rensit.2024.16.223","DOIUrl":"https://doi.org/10.17725/j.rensit.2024.16.223","url":null,"abstract":"Exosomes, a small bilayer membrane derived from eukaryotic cells, have been identified as a useful natural delivery platform due to their suitable size, biocompatibility, structural stability, high loading capacity, and editable surface capability. Due to the difficulty of maintaining the highly pure exosome, several attempts have conducted the techniques for exosome isolation. In recent years, microstructures have found many applications in chemistry, biology, and medicine due to their high accuracy and low cost of materials. Soft lithography is a low-cost, fast, accurate, and yet widely used method of construction of Micron channels. In the present study, a soft lithography process has been performed to construct channels for exosome separation with immunoaffinity function. Both biochemical and biophysical categories tests were performed to examine the quality of extracted exosomes from different sources (serum, cell supernatant, and urine) and compared with the commercially available kit. Results showed that the current technique was capable to isolate exosomes with a high yield rate, purity, and low time consumption. All forms of the imatinib loaded exosomes exhibited the antitumor activity against KYO-1 cell line.","PeriodicalId":517520,"journal":{"name":"Radioelectronics. Nanosystems. Information Technologies.","volume":"34 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140661219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intraband Absorption of Electromagnetic Radiation by Electrons with Optical Phonon Participation in Quantum Dot Superlattices 量子点超晶格中具有光学声子参与的电子对电磁辐射的带内吸收

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/j.rensit.2024.16.249

G. Ibragimov, Raida Z. Ibayeva

{"title":"Intraband Absorption of Electromagnetic Radiation by Electrons with Optical Phonon Participation in Quantum Dot Superlattices","authors":"G. Ibragimov, Raida Z. Ibayeva","doi":"10.17725/j.rensit.2024.16.249","DOIUrl":"https://doi.org/10.17725/j.rensit.2024.16.249","url":null,"abstract":"Physics Institute of Azerbaijan National Academy of Sciences In this paper, we investigate the absorption of electromagnetic radiation by a free electron gas interacting with lattice vibrations in a quantum dot superlattice. It is assumed that the electron gas in the quantum dot superlattice is limited by the anisotropic parabolic potential. The absorption of light by free carriers with the participation of phonons is calculated in the second order of the perturbation theory. When calculating the absorption coefficient, the matrix elements of the electron-photon and electron-phonon interactions (with polar and nonpolar optical phonons) are used. We can expect three possible transitions in the absorption coefficient for electron-polar phonon scattering: (1) a transition due to the size subband levels for only the x direction, (2) a transition due to the size subband levels for only the y direction and (3) a transition due to the size subband levels for both the x direction and the y direction. For electron-nonpolar phonon scattering we can expect оnly one possible transitions in the, the absorption coefficient: a transition due to the size subband levels for both the x direction and the y direction.","PeriodicalId":517520,"journal":{"name":"Radioelectronics. Nanosystems. Information Technologies.","volume":"54 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical Investigation of the Steel Ball-Ice Plate Low-Speed Collision 钢球-冰板低速碰撞的数值研究

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/j.rensit.2024.16.291

Walid Khalid, Vasiliy I. Golubev, Evgeniya K. Guseva

引用次数: 0

One Approach for Group Navigation of Unmanned Underwater Vehicles 无人潜航器群体导航的一种方法

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/j.rensit.2024.16.267

A. Scherbatyuk, Yury V. Matvienko, V. Kuz’kin, S. Pereselkov, Vladimir I. Grachev

引用次数: 0

Radio coverage of the coastal marine zone with the use of a wireless broadband optical channel for the organization of intensive navigation 利用无线宽带光信道对沿海海区进行无线电覆盖，组织密集导航

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/j.rensit.2024.16.297

Igor L. Afonin, Vladislav V. Golovin, Mikhail O. Tkachenko, Y. N. Tyschuk, A. Polyakov, G. V. Slyozkin

引用次数: 0

Key Features of Continuous-Variable Quantum Key Distribution Protocols 连续可变量子密钥分发协议的主要特点

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/j.rensit.2024.16.255

Evgenii V. Burlakov, A. V. Korobov

引用次数: 0

Criteria for image superposition in a two-camera technical vision system 双摄像头技术视觉系统中的图像叠加标准

Radioelectronics. Nanosystems. Information Technologies. Pub Date : 2024-04-24 DOI: 10.17725/rensit.2024.16.307

Альфия А. Диязитдинова

{"title":"Criteria for image superposition in a two-camera technical vision system","authors":"Альфия А. Диязитдинова","doi":"10.17725/rensit.2024.16.307","DOIUrl":"https://doi.org/10.17725/rensit.2024.16.307","url":null,"abstract":"Совмещение изображений является важной задачей в системах технического зрения. Двухкамерные системы проводят съемку одной и той же сцены, поэтому изображения содержат один и тот же сигнал. Эта особенность определяет возможные критерии для совмещения изображений. В работе исследуются три критерия совмещения изображений: критерий, основанный на коэффициенте корреляции; критерий, основанный на количестве совпавших точек контурных линий; критерий, основанный на количестве совпавших особых точек. Для исследования была разработана методика для проведения численного моделирования. Результаты моделирования показали, что наиболее помехоустойчивым является критерий на основе коэффициента корреляции, но он требует наибольшего времени обработки. Критерий, основанный на совпадении точек контурных линий, является наименее помехоустойчивым. Критерий на основе совпадения особых точек менее помехоустойчивый, чем критерий по коэффициенту корреляции, но он требует наименьшего времени обработки.","PeriodicalId":517520,"journal":{"name":"Radioelectronics. Nanosystems. Information Technologies.","volume":"25 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0