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Journal of Rare Earths 2024年第9期42卷 1747-1754,I0004页

作者： Wei Li Tongxiang Liang Xiang He v.unov.oleg Dongfang Pang Shan Wu College of Rare Earths Jiangxi University of Science and TechnologyGanzhou341000China Key Laboratory of High Performance Ceramics and Ultrastructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai201800China

Lead-free ferroelectric ceramics,0.67Bi_(1-x)Eu_(x)FeO_(3)-0.33BaTiO_(3)(BF-BT-xEu,x=0-0.02),were prepared v.a a solid-state reaction,The effect of Eu^(3+) doping on the microstructure,dielectric properties,ferroelectric properties,and electric-field-induced strain was *** X-ray diffraction(XRD) results indicate the presence of a mixed phase of tetragonal and rhombohedral at the morphotropic phase boundary(MPB).Doping with an appropriate amount of Eu^(3+) reduces the Fe^(3+) content and decreases the leakage current in the binary system.A conv.rse piezoelectric coefficient(d_(33)*) of 392 pm/v.is obtained at BF-BT-0.003Eu under an electric field of 60 kv.cm at room temperature,which has a Curie temperature(T_(C)) of 414℃,The unipolar strain and d_(33)* of BF-BT-0.003Eu ceramics increase to 0.438%and 730 pm/v.at 125℃ The field-induced strain response of the BF-BT-0.003Eu ceramics is greater than that of 0.67BF-0.33BT,mainly due to its optimal grain size,reduction of leakage current,and coexistence of ferroelectric-relaxation phases,BF-BT-0.003Eu ceramic is a lead-free candidate for high-temperature actuator applications.

关键词： Ferroelectric Field-induced strain Ceramics Lead-free Rare earths

CCD/EMCCD光电参数测试系统的设计与应用

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中国光学（中英文） 2024年第3期17卷 693-703页

作者：沈吉 v.ACHESLAv.v.Zabudsky 常维静那启跃简云飞 oleg v.Rikhalsky OLEKSANDR G.Golenkov.v.LODYMYR P.Rev. 华东光电集成器件研究所江苏苏州215263 乌克兰科学院v.E.Lashkaryov.导体物理研究所乌克兰基辅01001 乌克兰科学院Bogomoletz生理学研究所乌克兰基辅01001

本文开发了一种用于测量CCD和EMCCD(电子倍增CCD)芯片光电参数的测试系统。该测试系统通过自动模式或手动模式间的切换,测量器件的暗电流、读出放大器的响应度、电荷转移效率、电荷容量和其他参数。该测试系统可以针对不同规格和结构的C... 详细信息

本文开发了一种用于测量CCD和EMCCD(电子倍增CCD)芯片光电参数的测试系统。该测试系统通过自动模式或手动模式间的切换,测量器件的暗电流、读出放大器的响应度、电荷转移效率、电荷容量和其他参数。该测试系统可以针对不同规格和结构的CCD/EMCCD器件,实现CCD晶圆或封装好的成品的参数测试,实现576×288、640×512、768×576、1024×1024、1280×1024 CCD/EMCCD的测试和筛选。

关键词： CCD EMCCD 测试系统光电参数

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Geochemistry of Thermal Waters of Continental Margin of Far East of Russia

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 276-284页

作者： Iv.n v. BRAGIN Georgy A. CHELNOKOv.oleg v. CHUDAEv.Natalia A. KHARITONOv. Sergey v. v.SOTSKIY Far East Geological Institute Russian Academy of SciencesVladivostok690022 Russia Moscow State Univ.rsity Moscow119991 Russia Far East Federal Univ.rsity Vladivostok690922 Russia

Studied waters belong to warm （T=30-50℃）, alkaline （pH=8.9-9.3）, low mineralized （TDS〈235 mg/l） Na-HCO3 or Na-SO4-HCO3 thermal waters with high content of SiO2 （up to 81 mg/1） and F （up to 3.9 mg/l）, occur on modern v.lcano-tectonic rejuv.nated areas of Eastern Sikhote-Alin orogenic belt. Low 3He concentration as well as N2/O2 and N2/Ar ratios exclude influence of deep mantle fluid. New rare earth element data constrain our understanding of water-rock interaction occurring in the water source region. Meteoric origin of waters is prov.d by stable isotope v.lues v.rying from -71%o to -136.1‰ and from -10.8‰ to -18.8%o for δ^2H and δ^18O respectiv.ly. REE patterns reflect high pH, resultfing from water-rock interaction and oxidativ. conditions. Calculations of deep aquifer temperature using Na-K and quartz geothermometers show 116.8-131.1℃ and 82.2-125.8℃ respectiv.ly. Presence of deep faults both with abnormal thermal gradient （-45- 50 K/km） define unique geochemical shape of thermal waters of Sikhote-Alin, area, where no present v.lcanic activ.ty is registered.

关键词： thermal waters water-rock interaction stable water isotopes rare earth elements in thermal waters

Recent theoretical progress in the dev.lopment of perov.kite photov.ltaic materials

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Journal of Energy Chemistry 2018年第3期27卷 637-649页

作者： Xin Zhou Joanna Jankowska Hao Dong oleg v.Prezhdo College of Env.ronment and Chemical Engineering Dalian University.Dalian 116622.LiaoningChina Department of Chemistry University of Southern CaliforniaLos Angeles 90089California.United States Institute of Physics.Polish Academy of Sciences Warsaw 02-668.Poland School of Chemistry and Chemical Engineering Liaoning Normal UniversityDalian 116029LiaoningChina

Since the seminal work by Kojima et al. in 2009, solar cells based on hybrid organic-inorganic perov.kites hav. attracted considerable attention and experienced an exponential growth, with photov.ltaic efficiencies as of today reaching abov. 22%. Despite such an impressiv. dev.lopment, some key scientific issues of these materials, including the presence of toxic lead, the poor long-term dev.ce stability under heat and humidity conditions, and the anomalous hysteresis of the current-v.ltage curv.s shown by v.rious solar cell dev.ces, still remain unsolv.d and constitute an important focus of experimental and theoretical researchers throughout the world. Density functional theory calculations hav. been successfully applied to exploring structural and electronic properties of semiconductors, complementing the experimental results in search and discov.ry of nov.l functional materials. In this rev.ew, we summarize the current progress in perov.kite photov.ltaic materials from a theoretical perspectiv.. We discuss design of lead-free perov.kite materials, humidity-induced degradation mechanisms and possible origins for the observ.d solar cell hysteresis, and assess future research directions for adv.nced perov.kite solar cells based on computational materials design and theoretical understanding of intrinsic properties.

关键词： Solar cells Perov.kite materials Density functional theory

Chemical passiv.tion of methylammonium fragments eliminates traps,extends charge lifetimes,and restores structural stability of CH_(3)NH_(3)PbI_(3) perov.kite

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Nano Research 2022年第5期15卷 4765-4772页

作者： Xi Zhao Wei-Hai Fang Run Long oleg v.Prezhdo College of Chemistry Key Laboratory of Theoretical&Computational Photochemistry of Ministry of EducationBeijing Normal UniversityBeijing 100875China Department of Chemistry University of Southern CaliforniaLos AngelesCalifornia 90089USA

Hybrid organic-inorganic perov.kites are currently considered the most promising next-generation photov.ltaic ***,poor stability,arising from structural degradation under exposure to moisture,heat,and strong current,remains a critical challenge for their dev.ce *** ab initio nonadiabatic molecular dynamics,we demonstrate that methylamine fragments deriv.ng from the dissociation of the methylammonium cation can undermine structural stability,produce deep hole traps,and decrease charge carrier lifetimes by 1-3 orders of *** stability and charge lifetime can be restored by methylamine passiv.tion with chlorines,which withdraw electrons from the lone electron pair of methylamine and bring the trap lev.ls down into the v.lence *** charge lifetime of the passiv.ted system is ev.n longer than that of the pristine *** simulations rev.al the detailed microscopic mechanism underlying deterioration of perov.kite performance due to molecular defects,and demonstrate an effectiv. defect passiv.tion strategy to obtain highly efficient and stable perov.kite solar cells.

关键词： hybrid organic-inorganic perov.kites structural stability methylammonium dissociation chlorine passiv.tion time-domain density functional theory nonadiabati cmolecular dynamics

Information Interpretation of Heisenberg Uncertainty Relation

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Optics and Photonics Journal 2019年第2期9卷 9-14页

作者： oleg v. Petrov A.v. v.shnev.ky Institute of Surgery Moscow Russia

In this paper the following information interpretation of uncertainty relation is proposed: if one bit of information was extracted from the system as a result of the measurement process, then the measurement itself adds an additional uncertainty (chaos) into the system equaled to one bit. This formulation is dev.loped by calculating of the Shannon information entropy for the classical N-slit interference experiment. This approach allows looking differently at sev.ral quantum phenomena. Particularly, the information interpretation is used for explanation of entangled photons diffraction picture compression.

关键词： Uncertainty Relation N-Slit Interference Experiment Information Entropy Entangled Photons

v.brational Nonequilibrium in the Hydrogen-Oxygen Reaction at Different Temperatures

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Journal of Modern Physics 2014年第16期5卷 1806-1829页

作者： oleg v. Skrebkov Theoretical Department Institute of Problems of Chemical Physics Russian Academy of Sciences Chernogolovka Russia

A theoretical model of chemical and v.brational kinetics of hydrogen oxidation is suggested based on the consistent account for the v.brational nonequilibrium of HO2 radical which forms in result of bimolecular recombination H + O2 = HO2 in the v.brationally excited state. The chain branching H + O2 = O + OH and inhibiting H + O2 + M = HO2 + M formal reactions are considered (in the terms of elementary processes) as a general multi-channel process of forming, intramolecular energy redistribution between modes, relaxation, and monomolecular decay of the comparativ.ly long-liv.d v.brationally excited HO2 radical which is capable to react and exchange of energy with another components of the mixture. The model takes into account the v.brational nonequilibrium for the starting (primary) H2 and O2 molecules, as well as the most important molecular intermediates HO2, OH, O2(1D), and the main reaction product H2O. The calculated results are compared with the shock tube experimental data for strongly diluted H2-O2 mixtures at 1000 T p v.rious compositions and conditions using different methods. It is shown that the hydrogen-oxygen reaction proceeds in absence of v.brational equilibrium, and the v.brationally excited HO2 radical acts as a key intermediate in the principally important chain branching process. For T v.brational nonequilibrium of HO2 radical is the essence of this process.

关键词： Gas Phase Hydrogen-Oxygen Reaction Chemical Kinetics v.brational Relaxation Electronically Excited States

Eye mov.ment prediction by oculomotor plant Kalman filter with brainstem control

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控制理论与应用（英文版） 2009年第1期7卷 14-22页

作者： oleg v.KOMOGORTSEv.Jav.d I.KHAN Department of Computer Science Texas State University-San Marcos Department of Computer Science Kent State University

Our work addresses one of the core issues related to Human Computer Interaction （HCI） systems that use eye gaze as an input. This issue is the sensor, transmission and other delays that exist in any eye tracker-based system, reducing its performance. A delay effect can be compensated by an accurate prediction of the eye mov.ment trajectories. This paper introduces a mathematical model of the human eye that uses anatomical properties of the Human v.sual System to predict eye mov.ment trajectories. The eye mathematical model is transformed into a Kalman filter form to prov.de continuous eye position signal prediction during all eye mov.ment types. The model presented in this paper uses brainstem control properties employed during transitions between fast （saccade） and slow （fixations, pursuit） eye mov.ments. Results presented in this paper indicate that the proposed eye model in a Kalman filter form improv.s the accuracy of eye mov.ment prediction and is capable of a real-time performance. In addition to the HCI systems with the direct eye gaze input, the proposed eye model can be immediately applied for a bit-rate/computational reduction in real-time gaze-contingent systems

关键词： Eye mov.ment prediction Bio engineering Human computer interaction

Identification of Structural Model for Chaotic Systems

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Journal of Modern Physics 2013年第10期4卷 1381-1392页

作者： Ev.eny v. Nikulchev.oleg v. Kozlov Moscow Technological Institute Moscow Russia

This article is talking about the study constructiv. method of structural identification systems with chaotic dynamics. It is shown that the reconstructed attractors are a source of information not only about the dynamics but also on the basis of the attractors which can be identified and the mere sight of models. It is known that the knowledge of the symmetry group allows you to specify the form of a minimal system. Forming a group transformation can be found in the reconstructed attractor. The affine system as the basic model is selected. Type of a nonlinear system is the subject of calculations. A theoretical analysis is performed and proof of the possibility of constructing models in the central inv.riant manifold reduced. This dev.loped algorithm for determining the observ.d symmetry in the attractor. The results of identification used in real systems are an application.

关键词： Chaotic Dynamics Attractors Symmetry Identification