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Technological parameters of thin-film pulsed laser scribing for perovskite photovoltaics

Clean Energy 2024年第3期8卷 127-135页

作者： Rustam Ishteev Pavel Gostishchev Mariia Tiukhova Anton Sorokin Arthur Ishteev Vladimir Kondratenko Laboratory of Precision Machining of Materials Department of NanoelectronicsInstitute for Advanced Technologies and Industrial ProgrammingRTU MIREAMoscowRussia Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of the Moscow Health Care Department MoscowRussia Laboratory of Advanced Solar Energy(LASE) National University of Science and Technology MISIS4 Leninsky St.MoscowRussia Semenov Federal Research Center of Chemical Physics Russian Academy of Sciences(RAS)4 Kosygina str.MoscowRussia

Over the past decade,the power conversion efficiency of halide perovskite solar cells has shown a rapid increase to 26.1%.The significant efficiency growth and the relative simplification of the technology for obtaining thin-film solar cells due to liquid printing methods determine the high potential for the low-cost perovskite solar cells ***,efficient use of cell geometry is comparable to the size of standard crystalline-Si wafers(156:156 mm and more).Therefore,modular geometry similar to amorphous-Si solar cell approaches is used to scale perovskite solar *** electrical connection of thin-film cells requires precise processing of the conductive layers that form the device p-i-n *** subject of research is the development of a full pulsed laser scribing cycle for inverted perovskite solar *** this work,we propose a study of a laser-patterning technology In_(2)O_(3):SnO_(2)(ITO)conductive layer and a photoactive perovskite layer Cs0,2(CH(NH_(2))_(2))_(0,8)PbI_(3).Process regimes of transparent conducting electrodes based on ITO and halide perovskite layer Cs_(0,2)(CH(NH_(2))_(2))_(0,8)PbI_(3)laser patterning were *** optimal parameters for the multipass mode processing of ITO and perovskite layer were *** cell was electrically isolated at a scribe line width of 30μm.

关键词： patterning perovskite solar cell perovskite solar cell photovoltaics scribing

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Redundant Data Detection and Deletion to Meet Privacy Protection Requirements in Blockchain-Based Edge Computing Environment

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China Communications 2024年第3期21卷 149-159页

作者： Zhang Lejun Peng Minghui Su Shen Wang Weizheng Jin Zilong Su Yansen Chen Huiling Guo Ran Sergey Gataullin Cyberspace Institute Advanced Technology Guangzhou UniversityGuangzhou 510006China College of Information Engineering Yangzhou UniversityYangzhou 225127China School Math&Computer Science Quanzhou Normal UniversityQuanzhou 362000China Computer Science Department City University of Hong KongHong Kong 999077China School of Computer and Software Nanjing University of Information Science and TechnologyNanjing 21004China Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education School of Computer Science and TechnologyAnhui UniversityHefei 230601China Department of Computer Science and Artificial Intelligence Wenzhou UniversityWenzhou 325035China Guangzhou University Library Guangzhou UniversityGuangzhou 510006China Central Economic and Mathematics Institute Russian Academy of Sciences mirea-Russian Technological University Moscow RegionRussia

With the rapid development of information technology,IoT devices play a huge role in physiological health data *** exponential growth of medical data requires us to reasonably allocate storage space for cloud servers and edge *** storage capacity of edge nodes close to users is *** should store hotspot data in edge nodes as much as possible,so as to ensure response timeliness and access hit rate;However,the current scheme cannot guarantee that every sub-message in a complete data stored by the edge node meets the requirements of hot data;How to complete the detection and deletion of redundant data in edge nodes under the premise of protecting user privacy and data dynamic integrity has become a challenging *** paper proposes a redundant data detection method that meets the privacy protection *** scanning the cipher text,it is determined whether each sub-message of the data in the edge node meets the requirements of the hot *** has the same effect as zero-knowledge proof,and it will not reveal the privacy of *** addition,for redundant sub-data that does not meet the requirements of hot data,our paper proposes a redundant data deletion scheme that meets the dynamic integrity of the *** use Content Extraction Signature(CES)to generate the remaining hot data signature after the redundant data is *** feasibility of the scheme is proved through safety analysis and efficiency analysis.

关键词： blockchain data integrity edge computing privacy protection redundant data

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Nonlocal Physics in the Wave Function Terminology

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Journal of Applied Mathematics and Physics 2021年第11期9卷 2889-2908页

作者： Boris V. Alexeev mirea-Russian State Technological University Moscow Russia

Shortcomings of the Boltzmann physical kinetics and the Schrödinger wave mechanics are considered. From the position of nonlocal physics, the Schrödinger equation is a local equation;this fact leads to the great shortcomings of the linear Schrödinger wave mechanics. Nonlocal nonlinear quantum mechanics is considered using the wave function terminology.

关键词： Nonlocal Physics Transport Processes in Quantum Mechanics Shortcomings of the Schrödinger Equation Wave Function Terminology

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Physical Kinetics, Relativism and Nonlocal Physics

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Journal of Applied Mathematics and Physics 2022年第1期10卷 68-90页

作者： Boris V. Alexeev mirea Russian State Technological University Moscow Russia

The old classical problems of theoretical physics are revisited from the point of view of nonlocal physics. Nonlocal physics leads to very complicated mathematical apparatus. Here, we explain the main principles of no... 详细信息

关键词： Nonlocal Physics Transport Processes in the Dissipative Statistical Physical Systems Relativistic Theories Michelson-Morley Experiment The Uncertainty Heisenberg Principle

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Tropical cyclone, as powerful natural self-oscillatory systems, and wind-energetic a way of struggle against it—The analysis of a cyclone from a position of the theory of vibrations

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Natural Science 2012年第7期4卷 508-515页

作者： Kaganov William Ilich Moscow State Institute of Radio Electronics and Automatics (mirea)

It is considered three phases of development of a tropical cyclone: the origin, the steady-state regime and the termination, coinciding with three phases of self-oscillatory process: oscillation buid-up, dynamic balance and failure of self-oscillations. The rough size of energy of a cyclone, as column of air rotating with high speed, at initial and final stages of development and comparison of the received sizes with nuclear and hydrogen bombs is calculated. The model of the electronic oscillator with negative active conductivity by the numerical solution of the equation of the Van-der-Pol is analyzed. Formal coincidence of transient in this model with increase of capacity of vortical air formation, that allows to make mnemonic model of a cyclone in the form of volume self-oscillatory system is shown. The numerical solution of the made equations allows to construct schedules of dynamic process for each of particles of the investigated environment. The general recipe on restraint of development of a cyclone by compulsory entering into it of attenuation is given. Realization of this recipe by means of group of platforms with powerful wind-electrogenerator and the fans and uses of a principle of negative feedback is shown. The results of laboratory experiment confirming idea, taken as a principle struggle against an arising air whirlwind, by transformation of a laminar stream in chaotic, turbulent are resulted. For fuller check offered a wind-energetic method of struggle against a cyclone carrying out of more scale experiment is necessary.

关键词： Tropical Cyclone Model Self-Oscillations Wind Electrogenerator The Fan Negative Feedback

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Nonlocal Theory of High-Temperature Superconductivity

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Journal of Modern Physics 2021年第5期12卷 552-593页

作者： Boris V. Alexeev mirea—Russian State Technological University Moscow Russia

The Boltzmann local physical kinetics forecasts the destruction of SC regime because of the heat movement of particles. Then, the most fundamental distinction between a strange metal and a conventional metal is the absence of well-defined quasi-particles. Here, we show that the mentioned “quasi-particles” are solitons, which are formed as a result of self-organization of ionized matter. Shortcomings of the Boltzmann physical kinetics consist in the local description of the transport processes on the level of infinitely small physical volumes as elements of diagnostics. The non-local physics leads to the theory superconductivity including the high temperature diapason. The generalized non-local non-stationary London’s formula is derived.

关键词： High Temperature Superconductivity Generalized London’s Formula Nonlocal Physics Transport Processes in Superconductors Longitudinal Electromagnetic Waves Solitons in Superconductors

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Surface bioactivation of PEEK by neutral atom beam technology

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Bioactive Materials 2019年第1期4卷 132-141页

作者： Joseph Khoury Irina Selezneva Sergei Pestov Vadim Tarassov Artem Ermakov Andrey Mikheev Mikhail Lazov Sean R.Kirkpatrick Dmitry Shashkov Alexandre Smolkov Exogenesis Corporation BillericaMAUSA Institute of Theoretical and Experimental Biophysics Russian Academy of SciencesPushchinoMoscow RegionRussia mirea–Russian Technological University MoscowRussia OAO Technotransservice Engineering MoscowRussia

Polyetheretherketone(PEEK)is an alternative to metallic implants and a material of choice in many applications,including orthopedic,spinal,trauma,and *** titanium(Ti)and Ti-alloys are widely used in many intraosseous implants due to its biocompatibility and ability to osseointegrate,negatives include stiffness which contributes to shear stress,radio-opacity,and *** surgeons prefer to use PEEK due to its biocompatibility,similar elasticity to bone,and radiolucency,however,due to its inert properties,it fails to fully integrate with *** Neutral Atom Beam(ANAB)technology has been successfully employed to demonstrate enhanced bioactivity of PEEK both in vitro and in *** this study,we further characterize surfaces of PEEK modified by ANAB as well as elucidate attachment and genetic effects of dental pulp stem cells(DPSC)exposed to these *** modification resulted in decreased contact angle at 72.9±4.5°as compared to 92.4±8.5°for control(p<0.01)and a decreased average surface roughness,however with a nano-textured surface *** treatment also increased the ability of DPSC attachment and proliferation with considerable genetic differences showing earlier progression towards osteogenic *** surface modification is achieved without adding a coating or changing the chemical composition of the PEEK *** together,we show that ANAB processing of PEEK surface enhances the bioactivity of implantable medical devices without an additive or a coating.

关键词： PEEK neutral activation

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Geometrical Frameworks in Identification Problem

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Intelligent Control and Automation 2021年第2期12卷 17-43页

作者： Nikolay Karabutov Department of Control Problems MIREA—Russian Technological University Moscow Russia

The purpose of this review is to apply geometric frameworks in identification problems. In contrast to the qualitative theory of dynamical systems (DSQT), the chaos and catastrophes, researches on the application of geometric frameworks have not been performed in identification problems. The direct transfer of DSQT ideas is inefficient through the peculiarities of identification systems. In this paper, the attempt is made based on the latest researches in this field. A methodology for the synthesis of geometric frameworks (GF) is proposed, which reflects features of nonlinear systems. Methods based on GF analysis are developed for the decision-making on properties and structure of nonlinear systems. The problem solution of structural identifiability is obtained for nonlinear systems under uncertainty.

关键词： Framework Nonlinear Dynamic System Phase Portrait Structural Identifi-cation Nonlinearity Structural Identifiability Synchronizability Lag Lya-punov Exponent

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Multidimensional Laplace Transforms over Quaternions, Octonions and Cayley-Dickson Algebras, Their Applications to PDE

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Advances in Pure Mathematics 2012年第2期2卷 63-103页

作者： Sergey Victor Ludkovsky Department of Applied Mathematics Moscow State Technical University MIREA Moscow Russia

Multidimensional noncommutative Laplace transforms over octonions are studied. Theorems about direct and inverse transforms and other properties of the Laplace transforms over the Cayley-Dickson algebras are proved. Applications to partial differential equations including that of elliptic, parabolic and hyperbolic type are investigated. Moreover, partial differential equations of higher order with real and complex coefficients and with variable coefficients with or without boundary conditions are considered.

关键词： Laplace Transform Quaternion Skew Field Octonion Algebra Cayley-Dickson Algebra Partial Differential Equation Non-Commutative Integration

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High-pressure torsion deformation process of bronze/niobium composite

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Transactions of Nonferrous Metals Society of China 2019年第8期29卷 1689-1695页

作者： S. O. ROGACHEV S. A. NIKULIN V. M. KHATKEVICH R. V. SUNDEEV D. A. KOZLOV National University of Science and Technology “MISIS” Leninsky pr. 4 Moscow 119049 Russia Russian Technological University “mirea” pr. Vernadskogo 78 Moscow 119454 Russia

The deformation process in the material volume under high-pressure torsion(HPT)was *** a model object for the observation of deformation process,we used a composite comprising a bronze matrix and niobium *** arrangements of the niobium filaments in the bronze matrix and their size have regular *** allows us to monitor and measure the displacement of the niobium filaments in the sample volume,which results from *** bronze/niobium composite samples were subjected to HPT at room temperature and 6 GPa,and the number of revolutions N=1/4,1/2,1,2,3 and *** was shown that HPT with revolution number of 1 leads to the 360° rotation of entire sample volume without sample *** deformational behavior during HPT can be expected for high-ductility metallic *** increase in the number of revolutions more than 2 leads to twisting the niobium filaments in the sample volume and the formation of 'vortex' multilayer *** mechanisms for the formation of such structures were discussed.

关键词： high-pressure torsion severe plastic deformation metal matrix composite vortex structure

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