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High yield production of ultrathin fibroid semiconducting nanowire of Ta2Pd3Se8

Nano Research 2020年第9期13卷 1627-1635页

作者： Xue Liu Sheng Liu Liubov Yu.Antipina Yibo Zhu Jinliang Ning Jinyu Liu Chunlei Yue Abin Joshy Yu Zhu Jianwei Sun Ana M.Sanchez pavel b.sorokin Zhiqiang Mao Qihua Xiong Jiang Wei Department of Physics and Engineering Physics Tulane UniversityNew OrleansLouisiana70118USA Division of Physics and Applied Physics Nanyang Technological UniversitySingapore637371Singapore National University of Science and Technology“MISiS” Moscow119049Russia Department of Polymer Science The University of AkronAkronOhio44325USA Technological Institute for Superhard and Novel Carbon Materials Moscow108840Russia Moscow Institute of Physics and Technology Dolgoprudny141700Russia Department of Mechanical Engineering Columbia UniversityNew YorkNew York10027USA Department of Physics University of WarwickCoventryCV47ALUK

Immediately after the demonstration of the high-quality electronic properties in various two dimensional(2D)van der Waals(vdW)crystals fabricated with mechanical exfoliation,many methods have been reported to explore and control large scale *** with recent advancements in fabricating 2D atomic layered crystals,large scale production of one dimensional(1D)nanowires with thickness approaching molecular or atomic level still remains ***,we demonstrate the high yield production of a 1D vdW material,semiconducting Ta2Pd3Se8 nanowires,by means of liquid-phase *** thinnest nanowire we have readily achieved is around 1 nm,corresponding to a bundle of one or two molecular *** electron microscopy(TEM)and transport measurements reveal the as-fabricated Ta2Pd3Se8 nanowires exhibit unexpected high crystallinity and chemical *** low-frequency Raman spectroscopy reveals clear evidence of the existing of weak inter-ribbon *** fabricated nanowire transistors exhibit high switching performance and promising applications for photodetectors.

关键词： van der Waals nanowire 1D semiconductor liquid exfoliation micro Raman spectroscopy electronic and optoelectronic device

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Patterning Nanoroads and Quantum Dots on Fluorinated Graphene

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Nano Research 2011年第1期4卷 143-152页

作者： Morgana A. Ribas Abhishek K. Singh pavel b. sorokin boris I. Yakobson Department of Mechanical Engineering and Materials Science and Department of Chemistry Rice University Houston Texas 77005 USA Materials Research Centre Indian Institlzte of Science Bangalore 560012 India

Using ab initio methods we have investigated the fluorination of graphene and find that different stoichiometric phases can be formed without a nucleation barrier, with the complete ＂2D-Teflon＂ CF phase being thermody- namically most stable. The fluorinated graphene is an insulator and turns out to be a perfect matrix-host for patterning nanoroads and quantum dots of pristine graphene. The electronic and magnetic properties of the nanoroads can be tuned by varying the edge orientation and width. The energy gaps between the highest occupied and lowest unoccupied molecular orbitals （HOMO-LUMO） of quantum dots are size-dependent and show a confinement typical of Dirac fermions. Furthermore, we study the effect of different basic coverage of F on graphene （with stoichiometries CF and C4F） on the band gaps, and show the suitability of these materials to host quantum dots of graphene with unique electronic properties.

关键词： Graphene fluorinated graphene fluorographene nanoroads quantum dots

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

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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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Hole-doping of mechanically exfoliated graphene by confined hydration layers

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Nano Research 2015年第9期8卷 3020-3026页

作者： Tjeerd R. J. bollmann Liubov Yu. Antipina Matthias Temmen Michael Reichling pavel b. sorokin Inorganic Materials Science MESA+ Institute for Nanotechnology P. O. Box 217 7500AE Enschede The Netherlands Fachbereich Physik Universitat OsnabrClck BarbarastraBe 7 OsnabrClck 49076 Germany Moscow Institute of Physics and Technology Dolgoprudny 141700 Russian Federation Siberian Federal University Krasnoyarsk 660041 Russian Federation National University of Science and Technology MISiS Moscow 119049 Russian Federation

by the use of non-contact atomic force microscopy （NC-AFM） and Kelvin probe force microscopy （KPFM）, we measure the local surface potential of mechanically exfoliated graphene on the prototypical insulating hydrophilic substrate of CAF2（111）. Hydration layers confined between the graphene and the CaF2 substrate, resulting from the graphene＇s preparation under ambient conditions on the hydrophilic substrate surface, are found to electronically modify the graphene as the material＇s electron density transfers from graphene to the hydration layer. Density functional theory （DFT） calculations predict that the first 2 to 3 water layers adjacent to the graphene hole-dope the graphene by several percent of a unit charge per unit cell.

关键词： graphene,non-contact atomic forcemicroscopy (NC-AFM,KPFM),liquid-solid interfacestructure,electronic transport innanoscale materials andstructuresgraphene,non-contact atomic forcemicroscopy (NC-AFM,KPFM),liquid-solid interfacestructure,electronic transport innanoscale materials andstructures

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Contracted interlayer distance in graphene/sapphire heterostructure

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Nano Research 2015年第5期8卷 1535-1545页

作者： Shiro Entani Liubov Yu. Antipina pavel V. Avramov Manabu Ohtomo Yoshihiro Matsumoto Norie Hirao Iwao Shimoyama Hiroshi Naramoto Yuji baba pavel b. sorokin Seiji Sakai Advanced Science Research Center Japan Atomic Energy Agency Tokai Ibaraki 319-1195 Japan Technological Institute for Superhard and Novel Carbon Materials Troitsk Moscow 142190 Russia Moscow Institute of Physics and Technology Dolgoprudny Moscow 141700 Russia Siberian Federal University 79 Svobodniy pr. Krasnoyarsk 660041 Russia Ouantum beam Science Directorate Japan Atomic Energy Agency Tokai Ibaraki 319-1195 Japan National University of Science and Technology MISiS Moscow 119049 Russia

Direct growth of graphene on insulators is expected to yield significant improvements in performance of graphene-based electronic and spintronic devices. In this study, we successfully reveal the atomic arrangement and electronic properties of a coherent heterostructure of single-layer graphene and α-Al2O3（0001）. The analysis of the atomic arrangement of single-layer graphene on α-Al2O3（0001） revealed an apparentcontradiction. The in-plane analysis shows that single-layer graphene grows not in a single-crystalline epitaxial manner, but rather in polycrystalline form, with two strongly pronounced preferred orientations. This suggests relatively weak interfacial interactions are operative. However, we demonstrate that unusually strong physical interactions between graphene and α-Al2O3（0001） exist, as evidenced by the small separation between the graphene and the α-Al2O3（0001） surface. The interfacial interaction is shown to be dominated by the electrostatic forces involved in the graphene n-system and the unsaturated electrons of the topmost O layer of α-Al2O3（0001）, rather than the van der Waals interactions. Such features causes graphene hole doping and enable the graphene to slide on the α-Al2O3（0001） surface with only a small energy barrier despite the strong interfacial interactions.

关键词： graphene sapphire chemical vapor deposition graphene/insulator interface

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The modern state of the European saiga population(Saiga tatarica tatarica):mtDNA,DRb3 MHC gene,and microsatellite diversity

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Integrative Zoology 2023年第4期18卷 661-676页

作者： Nadezhda Vladimirovna KASHININA Anna Anatolievna LUSHCHEKINA pavel Alexandrovich sorokin Karina Karenovna TARASYAN Marina Vladimirovna KHOLODOVA A.N.Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences MoscowRussia

INTRODUCTION The saiga antelope[Saiga tatarica(Linnaeus,1766)]is an extant representative of the large herbivorous mammals’complex of Pleistocene steppe-tundra ecosystem(bannikov et al.1961;baryshnikov et al.1998).In the course of its evolutionary history,under the influence of global climate changes and later anthropogenic factors,the species experienced multiple changes in number and *** the last Ice Age,the saiga range in Eurasia was integral and achieved its maximum in the entire species history:In the west,it reached the Pyrenees and the Alps,and in the east inhabited Yakutia and Chukotka(Kahlke 2014).The disintegration of the range is directly related and correlates well with the destruction of tundra ecosystems(baryshnikov et al.1998).Currently,there are two subspecies of the saiga:the Mongolian saiga,***(=***),and nominative subspecies,*** Mongolian subspecies is represented by a single saiga population in *** are four populations of the nominative subspecies in the arid ecosystems of Kazakhstan(Ural,betpakdala,Ustyurt populations)and Russia(Northwest Pre-Caspian population).

关键词： ecosystems Northwest subspecies

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bilayered semiconductor graphene nanostructures with periodically arranged hexagonal holes

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Nano Research 2015年第4期8卷 1250-1258页

作者： Dmitry G. Kvashnin Peter Vancso Liubov Yu. Antipina Geza I. Mark Laszlo P. biro pavel b. sorokin Leonid A. Chernozatonskii Emanuel Institute of biochemical Physics 4 Kosigina Street Moscow 119334 Russia Institute of Technical Physics and Materials Science Research Centre for Natural Sciences H- 1525 Budapest P.O. Box 49 Hungary Technological Institute of Superhard and Novel Carbon Materials 7a Centralnaya Street Troitsk Moscow 142190 Russia

We present a theoretical study of new nanostructures based on bilayered graphene with periodically arranged hexagonal holes （bilayered graphene antidots）. Our ab initio calculations show that fabrication of hexagonal holes in bigraphene leads to connection of the neighboring edges of the two graphene layers with formation of a hollow carbon nanostructure sheet which displays a wide range of electronic properties （from semiconductor to metallic）, depending on the size of the holes and the distance between them. The results were additionally supported by wave packet dynamical transport calculations based on the numerical solution of the time-dependent Schr/Sdinger equation.

关键词： gaphene antidots electronic properties DFT

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Interaction of water droplets with pyrolyzing coal particles and tablets

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Defence Technology（防务技术） 2023年第12期30卷 1-12页

作者： Anastasia Islamova pavel Tkachenko pavel Strizhak National Research Tomsk Polytechnic University Heat and Mass Transfer Laboratory30 Lenin AvenueTomsk634050Russia

The paper presents the experimental research findings for the patterns of collisions of water droplets with pressed tableted samples used as substrates and with small particles of a pyrolyzing solid *** coal samples were ***-substrate interactions were studied when varying the droplet diameter in the range from 1 to 4 mm and velocity from 0.5 to 4 m/*** corresponded to the Weber number range of *** coal tablet surface temperature was varied from 20 to 700℃.In the interactions of water droplets(0.7-1.5 mm in diameter,pre-collision velocity from 1 to 3 m/s)with coal particles(with a size of 0.2-1 mm,pre-collision velocity 0.7-2 m/s),the temperature of the latter was varied in the range of 330-480℃.The following regimes of the interaction of droplets with solid particles during chemical reactions and phase transformations were distinguished:spreading/agglomeration and break-up/*** in the characteristics of the interaction of water droplets with coal particles at varying temperatures were ***-particle interaction regime maps for b(We),We(Oh)and We(Ca)were *** collision regime boundaries were described using fitted curves that can be utilized to develop the existing mathematical models of droplet-particle collisions in *** was established that the gaseous volatile production in coal pyrolysis has a modest effect on the regimes and characteristics of the droplet destruction in the temperature range under consideration(20-700℃).

关键词： Droplet Particle Solid substrate Collision Agglomeration Separation

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Genetic structure of the Amur tiger(Panthera tigris altaica)population:Are tigers in Sikhote-Alin and southwest Primorye truly isolated?

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Integrative Zoology 2016年第1期11卷 25-32页

作者： pavel A.sorokin Vyatcheslav V.ROZHNOV Anna U.KRASNENKO Victor S.LUKAREVSKIY Sergey V.NAIDENKO Jose A.HERNANDEZ-bLANCO A.N.Severtsov Institute of Ecology and Evolution Russian Academy of SciencesMoscowRussia

We used molecular genetic analyses to noninvasively identify individual Amur tigers and define subpopulations of tigers in the Russian Far *** identified 63 individuals after genotyping 256 feces,7 hair and 11 blood samples collected within southern,central and northern Sikhote-Alin,as well as Southwest *** of nuclear DNA at 9 microsatellite loci demonstrated greater genetic similarity between animals from southern and northern Sikhote-Alin(some 500 km apart)than between animals from Ussuriskii State Nature Reserve and Southwest Primorye(less than 10 km apart at their nearest point),suggesting that a true barrier exists preventing movements of tigers between Southwest Primorye and the southern Sikhote-Alin Mountains.

关键词： Amur tiger fecal DNA noninvasive genetic sampling Panthera tigris altaica

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E-beam generation in discharges initiated by voltage pulses with a rise time of 200 ns at an air pressure of 12.5-100 kPa

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Plasma Science and Technology 2019年第4期21卷 52-60页

作者： Victor TARASENKO Dmitry bELOPLOTOV Mikhail LOMAEV Dmitry sorokin Institute of High Current Electronics Siberian Bran ch.Russian Academy of Sciences.Tomsk&34055.Russia National Research Tomsk State University.Tomsk 634050 Russia

The effect of air pressure(12.5,25,50,and 100 kPa)on the gen eration of runaway electron beams in a non-uniform electric field when applying voltage pulses(~35 kV)with a rise time of?200 ns has been *** results show that the discharge has various stages:streamer,diffuse,and ***,a wide streamer develops in the gap and a diffuse discharge is formed.A spark is formed u 100 ns after the *** current pulse of a supershort avalanche electron beam(SAEb)was measured with a collector at various pressures of *** show that there are two modes of generation of run away *** an air pressure of 25-100 kPa,a single SAEb current pulse with a full width at half-maximum(FWHM)of 120-140 ps is *** the air pressure of 12.5 kPa,two current pulses of the electron beam are *** of the first and second current pulses are ul40ps and u300 ps,*** current pulse amplitude of the second electron beam is higher than that of the first one,but the electron energy is less.

关键词： diffuse discharge runaway electrons streamer breakdown displacement current

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