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Wafer‑Scale Ag_(2)S‑Based Memristive Crossbar Arrays with Ultra‑Low Switching‑Energies Reaching Biological Synapses

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Nano-Micro Letters 2025年第3期17卷 328-339页

作者： Yuan Zhu Tomas Nyberg Leif Nyholm Daniel Primetzhofer Xun Shi Zhen Zhang Division of Solid‑State electronics Department of Electrical EngineeringUppsala University75121 UppsalaSweden Department of Chemistry Uppsala UniversityUppsalaSweden Department of Physics and Astronomy Uppsala UniversityUppsalaSweden State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China

Memristive crossbar arrays(MCAs)offer parallel data storage and processing for energy-efficient neuromorphic ***,most wafer-scale MCAs that are compatible with complementary metal-oxide-semiconductor(CMOS)technology still suffer from substantially larger energy consumption than biological synapses,due to the slow kinetics of forming conductive paths inside the memristive *** we report wafer-scale Ag_(2)S-based MCAs realized using CMOS-compatible processes at temperatures below 160℃.Ag_(2)S electrolytes supply highly mobile Ag+ions,and provide the Ag/Ag_(2)S interface with low silver nucleation barrier to form silver filaments at low energy *** further enhancing Ag+migration in Ag_(2)S electrolytes via microstructure modulation,the integrated memristors exhibit a record low threshold of approximately−0.1 V,and demonstrate ultra-low switching-energies reaching femtojoule values as observed in biological *** low-temperature process also enables MCA integration on polyimide substrates for applications in flexible ***,the intrinsic nonidealities of the memristive units for deep learning can be compensated by employing an advanced training *** impressive accuracy of 92.6%in image recognition simulations is demonstrated with the MCAs after the *** demonstrated MCAs provide a promising device option for neuromorphic computing with ultra-high energy-efficiency.

关键词： Wafer-scale Ag_(2)S films Reactive sputter Silver nucleation Ag^(+)migration Energy-efficient neuromorphic computing

Kravchenko atomic transforms in digital signal processing

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Journal of Measurement Science and Instrumentation 2012年第3期3卷 228-234页

作者： V.F.Kravchenko D.V.Churikov kotel'nikov institute of radio engineering and electronics Russian Academy of Sciences

The modified atomic transformations are constructed and proved. On their basis the new complex analytic wavelets are obtained. The proof of the Fourier transforms existence in L~ and L2 on the basis of the theory of atomic functions （AF） are presented. The numerical experiments of digital time series processing and physical analysis of the results confirm the efficiency of the proposed transforms.

关键词： atomic functions(AF) Fourier series space-time transforms digital signal processing(DSP)

Kravchenko probabilityweight functions in problems of radar signals correlation processing

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Journal of Measurement Science and Instrumentation 2013年第3期4卷 231-237页

作者： V F Kravchenko D V Churikov kotel'nikov institute of radio engineering and electronics of russian academy of sciences

In this report the combined method of correlation radar signal(RS)processing based on the theory of atomic functions(AF)is *** of using of new Kravchenko probability weight functions(WF)designs are *** functional to estimate accuracy and efficiency of RS processing for concrete physical models is *** is shown that the proposed approach significantly improves the quality of the coherent analysis of RS.

关键词： radar signal (RS) atomic funtions (AF) weight functions (WF)CLC number:TN911.7 Document code:AArticle ID:1674-8042(2013)03-0231-07

New WA-system of kravchenko functions in digital signal processing

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Journal of Measurement Science and Instrumentation 2012年第4期3卷 345-351页

作者： V F Kravchenko D V Churikov kotel'nikov institute of radio engineering and electronics Russian Academy of Sciences

On the basis of modified atomic transformations the new WA-systems of Kravchenko functions are *** an example the digital processing of time series of the various physical nature processing is *** numerical experiment... 详细信息

关键词： atomic functions WA-systems of functions wavelets digital signal processing(DSP)

Determination of the Lunar Ground Characteristics Using Bistatic Radar

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International Journal of Geosciences 2015年第12期6卷 1267-1276页

作者： Oleg I. Yakovlev Olga V. Yushkova Stanislav S. Matyugov Alexander G. Pavelyev Vladimir M. Smirnov kotel’nikov institute of radio engineering and electronics of the russian academy of sciences Fryazino Russia

At present, an investigation of the lunar ground at great depths is of paramount importance. This investigation can be carried out using decameter and meter waves. This article aims to analyze the variations of the reflectioncoefficient?at?decametric,?meter and decimeteric bands.?A?possibility of determination?of lunar ground characteristics by bistatic radar using powerful ground-based transmitters?at VHF and UHF bands and a receiver aboard a?Moon’s satellite?is analysed. Appropriate algorithms are considered for determinationof the regolith layer thickness,?dielectric permittivity, loss tangent, and density of the regolith and bedrocks. Expected results of measurements have been presented for a two-layer model of lunar ground, consisting of an upper layer with the loose porous rocks (regolith), and the rocks situated more deeply. Revealed regularities are a basis for determining the distribution of the permittivity in subsurface layer.

关键词： Bistatic Radar Lunar Ground Regolith Reflection Coefficient Permittivity

Effects of an attached functionally graded layer on the electromechanical behaviors of piezoelectric semiconductor fibers

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Applied Mathematics and Mechanics(English Edition) 2022年第9期43卷 1367-1380页

作者： Kai FANG Nian LI Peng LI Zhenghua QIAN V.KOLESOV I.KUZNETSOVA State Key Laboratory of Mechanics and Control of Mechanical Structures College of Aerospace EngineeringNanjing University of Aeronautics and AstronauticsNanjing 210016China Nanjing University of Aeronautics and Astronautics Shenzhen Research institute Shenzhen 518057Guangdong ProvinceChina kotel’nikov institute of radio engineering and electronics of russian academy of sciences Moscow 125009Russia

In this paper,we propose a specific two-layer model consisting of a functionally graded(FG)layer and a piezoelectric semiconductor(PS)*** on the macroscopic theory of PS materials,the effects brought about by the attached FG layer on the piezotronic behaviors of homogeneous n-type PS fibers and PN junctions are *** semi-analytical solutions of the electromechanical fields are obtained by expanding the displacement and carrier concentration variation into power *** show that the antisymmetry of the potential and electron concentration distributions in homogeneous n-type PS fibers is destroyed due to the material inhomogeneity of the attached FG *** addition,by creating jump discontinuities in the material properties of the FG layer,potential barriers/wells can be produced in the middle of the ***,the potential barrier configuration near the interface of a homogeneous PS PN junction can also be manipulated in this way,which offers a new choice for the design of PN junction based devices.

关键词： piezoelectric semiconductor(PS) functionally graded(FG)material composite structure PN junction

Atmosphere, ocean and lithosphere interaction as a possible drive of earthquake triggering

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Geodesy and Geodynamics 2020年第6期11卷 442-454页

作者： Victor Volkov Jan Mrlina Mstislav Dubrov Vladimir Smirnov Sergey Golovachev Vaclav Polak Schmidt institute of Physics of the Earth of the russian academy of sciences MoscowRussian Federation institute of Geophysics of the Czech academy of sciences PrahaCzech Republic kotel'nikov institute of radioengineering and electronics of the russian academy of sciences FryazinoRussian Federation

The comparison of tiltmeter and strainmeter data in the periods of the strongest earthquakes with tropical cyclone activities in the World Ocean during Januarye April 2014 is *** features of the observed co-seismic tilt and strain processes are consistent with the results obtained for the strongest events during *** time-frequency data analysis and the comparison of the analysis results with the anomalous geomagnetic and ionospheric activity come to an agreement with the observed *** obtained results have allowed the triggering mechanism of seismicity to be *** process begins as spatial and temporal swings of the regions of tropical cyclone origins and the basins of their *** powerful cyclone development accompanies a wide range of earthquake precursory phenomena,including abnormal behavior of ultra-wideband(0.002 m Hz-3 Hz)Earth’s oscillations,which can be recorded at far distances up to 1000-10,000 *** daily dissipation energy of the most powerful tropical cyclone(hurricane,typhoon)is estimated to have same order of magnitude as the energy released by an event of Mw 7-9,as well,atmospheric depressions are big enough to trigger a forthcoming strong *** triggering mechanism could be caused by quasi-static and timedependent surface loading that produces vertical tension and shear *** loading affects the seafloor and coastline where they fall close to the adjacent tectonic plate boundaries.

关键词： Tilt and strain Tropical cyclone Earthquake Hurricane

Evolution of ionization waves in a multi-pulsed plasma jet:the role of memory charges

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Plasma Science and Technology 2023年第3期25卷 95-103页

作者： N Yu BABAEVA G V NAIDIS V F TARASENKO D A SOROKIN Cheng ZHANG Tao SHAO Joint institute for High Temperatures Russian Academy of Sciences institute of High Current electronics Siberian BranchRussian Academy of Sciences institute of Electrical engineering Chinese Academy of Sciences University of Chinese academy of sciences

In this paper,we discuss the properties of ionization waves(IWs)in a multi-pulsed plasma jet while using the two-dimensional computational *** IWs are generated by application of three short negative pulses with a repetition frequency 12.5 *** simulations are performed continuously during a single run while accounting for charges accumulated inside(surface charges)and outside(space charges)the *** plasma forming gas mixture(He/O2=99.8%/0.2%)is injected through the discharge tube into the surrounding humid *** show that an IW can emerge from the tube exit at a pulse rising edge(as a negative IW)and at a falling edge of the same pulse(as a positive IW).It is demonstrated that remnants of the negative and positive charges play an essential role in the discharge *** first pulse travels the shortest distance as it propagates through the initially non-ionized *** IWs developing during the second pulse essentially enlarge the plasma plume *** the same time,the IWs generated by the third pulse eventually decay due to the remnants of charges accumulated during the previous *** memory charges can lead to the IW extinction.

关键词： helium plasma jet multiple pulses positive and negative ionization waves

Usage of global navigation systems for detection of dangerous meteorological phenomena

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Journal of Measurement Science and Instrumentation 2015年第1期6卷 68-74页

作者： V F Kravchenko O V Kravchenko V I Lutsenko I V Lutsenko D O Popov kotel'nikov institute of radio engineering and electronics Russian Academy of Sciences Usikov institute of radiophysics and electronics National Academy of Sciences of Ukraine

The method of dangerous meteorological phenomenon detection using the data of coordinate measurement by receivers of global navigation satellite system （GLONASS） and global positioning system （GPS） is proposed. The possibility of thunderstorm courses and strong clouds detection on data of pseudo-distances and altitudes is shown theoretically and confirmed experimentally.

关键词： dangerous meteorological phenomenon radio-raying global navigation system pseudo-range altitude