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Nano research 2021年第11期14卷 3756-3772页

作者： Sam..Ullah Xiaoqin Yang huy q.ta m..ia hasan Alicja Bachm..iuk Klaudia Tokarska Barbara Trzebicka Lei Fu m..k h.rum..li College of Energy Soochow Institute for Energy and Materials InnovationsKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou215006China School of Energy and Power Engineering Xi’an Jiaotong UniversityXi’an710049China Institute for Com..ex m..erials IFW Dresden20 Helmholtz StrasseDresden01069Germany NUTECh School of Applied Sciences&Humanities and Computer Engineering DepartmentNational University of TechnologyIslamabad42000Pakistan Centre of Polym.. and Carbon m..erials Polish Academy of SciencesM.Curie-Sklodowskiej 34Zabrze41-819Poland College of Chem..try and m..ecular Science Wuhan UniversityWuhan430072China Institute of Environm..tal Technology VŠB-Technical University of Ostrava17.listopadu 15Ostrava70833Czech Republic

Graphene is a m..erial with unique properties that can be exploited in electronics, catalysis, energy, and bio-related fields. Although, for m..im.. utilization of this m..erial, high.quality graphene is required at both the growth process and after transfer of the graphene film..o the application-com..tible substrate. Chem..al vapor deposition (CVD) is an im..rtant m..hod for growing high.quality graphene on non-technological substrates (as, m..al substrates, e.g., copper foil). Thus, there are also considerable efforts toward the efficient and non-dam..ing transfer of quality of graphene on to technologically relevant m..erials and system.. In this review article, a range of graphene current transfer techniques are reviewed from..he standpoint of their im..ct on contam..ation control and structural integrity preservation of the as-produced graphene. In addition, their scalability, cost- and tim..effectiveness are discussed. We sum..rize with a perspective on the transfer challenges, alternative options and future developm..ts toward graphene technology.

关键词： high.quality transfer application-com..tible substrate graphene technology

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Direct synthesis of large-area Al-doped graphene by chem..al vapor deposition:Advancing the substitutionally doped graphene fam..y

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Nano research 2022年第2期15卷 1310-1318页

作者： Sam..Ullah Yu Liu m..ia hasan Wenwen Zeng qitao Shi Xiaoqin Yang Lei Fu huy q.ta Xueyu Lian Jingyu Sun ruizhi Yang Lijun Liu m..k h.rum..li College of Energy Soochow Institute for Energy and m..erials Innovations Soochow UniversitySuzhou 215006China Key Laboratory of Advanced Carbon m..erials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhou 215006China NUTECh School of Applied Sciences&hum..ities and Com..ter Engineering Departm..t National University of TechnologyIslamabad 42000Pakistan Centre of Polym.. and Carbon m..erials Polish Academy of SciencesM.Curie-Sklodowskiej 34Zabrze 41-819Poland School of Energy and Power Engineering Xian Jiaotong UniversityXian 710049China College of Chem..try and m..ecular Science Wuhan UniversityWuhan 430072China Institute for Com..ex m..erials IFW Dresden 20 helm..ltz Strasse Dresden 01069Germany Institute of Environm..tal Technology VSB-Technical University of Ostrava17.listopadu 15Ostrava 70833Czech Republic

Graphene doping continues to gather m..entum..ecause it enables graphene properties to be tuned,thereby affording new properties to,im..ove the perform..ce of,and expand the application potential of *** can be chem..ally doped using various m..hods such as surface functionalization,hybrid com..sites(e.g.,nanoparticle decoration),and substitution doping,wherein C atom..are replaced by foreign ones in the graphene *** works have predicted that graphene could be substitutionally doped by alum..um..l)atom..which could hold prom..e for exciting applications,including hydrogen storage and evolution,and *** theoretical predictions suggest that Al substitutionally doped graphene(AIG)could serve as a m..erial for gas sensors and the catalytic decom..sition of undesirable ***,fabricating Al substitutionally doped graphene has proven challenging until ***,we dem..strate how controlled-flow chem..al vapor deposition(CVD)im..em..ting a sim..e solid precursor can yield high.quality and large-area m..olayer AIG,and this synthesis is unequivocally confirm.. using various characterization m..hods including local electron energy-loss spectroscopy(EELS).Detailed high-resolution transm..sion electron m..roscopy(hrTEm..hows num..ous bonding configurations between the Al atom..and the graphene lattice,som..of which are not theoretically ***,the produced AIG shows a CO_(2) capturability superior to those of other substitutionally doped graphenes.

关键词： alum..um..oped graphene single-solid precursor chem..al vapor deposition carbon dioxide capture energy storage catalytic applications

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In-situ observations of novel single-atom..hick 2D tin m..branes em..dded in graphene

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Nano research 2021年第3期14卷 747-753页

作者： Xiaoqin Yang huy q.ta Wei Li rafael G.m..des Yu Liu qitao Shi Sam..Ullah Alicja Bachm..iuk Jinping Luo Lijun Liu Jin-ho Choi m..k h.rum..li School of Energy and Power Engineering Xi’an Jiaotong UniversityNo.28Xianning West RoadXian710049China

There is ongoing research in freestanding single-atom..hick elem..tal m..al patches,including those suspended in a two-dim..sional(2D)m..erial,due to their utility in providing new structural and energetic insight into novel m..allic 2D *** pores have shown prom..e as support system..for suspending such *** study explores the potential of Sn atom..to form..reestanding stanene and/or Sn patches in graphene *** atom..were deposited on graphene,where they form.. novel single-atom..hick 2D planar clusters/patches(or m..branes)ranging from.. to 8 atom..within the graphene *** of three or m..e atom..adopted either a star-like or close-packed structural *** functional theory(DFT)calculations were conducted to look at the cluster configurations and energetics(without the graphene m..rix)and were found to deviate from..xperim..tal observations for 2D patches larger than five *** was attributed to interfacial interactions between the graphene pore edges and Sn *** presented findings help advance the developm..t of single-atom..hick 2D elem..tal m..al m..branes.

关键词： in-situ transm..sion electron m..roscopy Sn atoms planar cluster graphene vacancy

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Single Cr atom..atalytic growth of graphene

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Nano research 2018年第5期11卷 2405-2411页

作者： huy q. ta Uang Zhao Wanjian Yin Darius Pohl Bem..rellinghaus Thom.. Gem..ng Barbara Trzebicka Justinas Palisaitis Gao Jing Per O. A. Persson Zhongfan Liu Alicja Bachm..iuk m..k h. rum..li Soochow Institute for Energy and m..erials Innovations College of Physics Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215005 China Key Laboratory of Advanced Carbon m..erials and Wearable Energy Technologies of Jiangsu Province Soochow University Suzhou 215006 China Centre of Polym.. and Carbon m..erials Polish Academy of Sciences M. Curie-Sklodowskiej 34 Zabrze 41-819 Poland IFW Dresden Helmholtz Strasse 20 01069 Dresden Germany Departm..t of Physics Chemistry and Biology (IFM) Linkoping University SE-581 83 Linkoping Sweden Center for Nanochem..try Beijing Science and Engineering Centre for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University Beijing 100871 China

Single atom..are the ultim..e m..im.. size lim.. for catalysts. Graphene, as an exciting, ultim..ely thin （one atom..hick） m..erial can be im..ed in a transm..sion electron m..roscope with relatively few im..ing artefacts. here, we directly observe the behavior of single Cr atom..in graphene m..o- and di-vacancies and, m..e im..rtantly, at graphene edges. Sim..ar studies at graphene edges with other elem..tal atom.. with the exception of Fe, show catalytic etching of graphene. Fe atom..have been shown to both etch and grow graphene. In contrast, Cr atom..are only observed to induce graphene growth. Com..em..tary theoretical calculations illum..ate the differences between Fe and Cr, and confirm..ingle Cr atom..as superior catalysts for sp^2 carbon growth.

关键词： in situ transm..sion electron m..roscope (TEm) electron driven catalysis Cr single atom graphene synthesis

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悬浮于石墨烯空位/孔洞中的独立纳米结构

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Science China m..erials 2023年第1期66卷 35-50页

作者：刘玉 huy q ta 杨晓琴张月周军华施启涛曾梦琪 Thom.. Gem..ng Barbara Trzebicka 付磊 m..k h.rüm..li Soochow Institute for Energy and m..erials Innovations College of PhysicsOptoelectronics and EnergyCollaborative Innovation Center of Suzhou Nano Science and TechnologyKey Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006China IFW Dresden P.O.Box D-01171 DresdenGermany Gusu Laboratory of m..erials Suzhou 215123China Leibniz Institute for Solid State and m..erials research Dresden P.O.Box 270116D-01171 DresdenGermany Centre of Polym.. and Carbon m..erials Polish Academy of SciencesM.Curie-Sklodowskiej 34Zabrze 41-819Poland Institute of Environm..tal Technology VSB-Technical University of Ostrava17.Listopadu 15Ostrava70833Czech Republic College of Chem..try and m..ecular Sciences Wuhan UniversityWuhan 430072China

在电子束辐照下,石墨烯较易形成空位、孔洞等缺陷,从而捕获外来原子,形成新的结构.由于这些结构具有一些令人兴奋的性质,它们和石墨烯之间的相互作用引起了科研工作者相当大的研究兴趣.本文总结了利用透射电子显微镜在制备和表征悬浮在... 详细信息

在电子束辐照下,石墨烯较易形成空位、孔洞等缺陷,从而捕获外来原子,形成新的结构.由于这些结构具有一些令人兴奋的性质,它们和石墨烯之间的相互作用引起了科研工作者相当大的研究兴趣.本文总结了利用透射电子显微镜在制备和表征悬浮在石墨烯中的独立纳米结构的方法,以及原子分辨率下观察到的此类材料中原子/结构的动态行为过程,讨论了新型金属/非金属掺杂剂对具有不同键结构的石墨烯空位的影响,以及位于石墨烯边缘的单原子/团簇的催化活性.此外,还讨论了独立单原子厚二维团簇/金属/金属烯和二维团簇/金属/金属烯氧化物的动态形成过程.并指出这些纳米结构的形成、稳定性和宏观效应对于新的原子/分子尺度纳米技术的实际应用至关重要.以上数据证实了新型纳米结构的数量不断增加,并预示着相关研究的不断深入.

关键词：纳米结构透射电子显微镜纳米技术键结构石墨烯单原子电子束辐照分子尺度

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EFFECTS OF TrEATm..T TEm..rATUrE ON ThE m..rOSTrUCTUrE AND m..NETIC PrOPErTIES OF Fe-N ThIN FILmS

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Acta m..allurgica Sinica(English Letters) 2007年第4期20卷 293-300页

作者： B.L. Li h.m..Du X.F. Wang E.Y. Jiang Z.q.Li P. Wu Departm..t of Applied Physics Institute of Advanced Materials Physics School of Science Tianjin University Tianjin 300072 China Tianjin Key Laboratory of Low Dim..sional m..erials Physics and Preparing Technology Tianjin University Tianjin 300072 China

Fe-N thin film..were fabricated on both 100Si and NaCl substrates by rF m..netron sputtering under low nitrogen partial pressure. The m..rostructure and m..netic properties of Fe-N thin film..were investigated with the increase of the substrate tem..rature （Ts） and the annealing tem..rature （ta）. It is m..e difficult for nitrogen atom..to enter the Fe lattice under higher Ts above 150℃. The phase evolution is visible at higher ta above 200℃. The phase transform..ion of α＇＇-Fe16N2 occurred at 400℃. The change of crystal size with ta was clearly visible from..right and dark field im..es. The clear high-resolution electron m..roscope （hrEm..im..es of 110α, 111γ＇, 112α＇＇, and 200α＇＇ phases were observed. The interplanar distances from..Em..transm..sion electron m..roscope） and hrEm..atch the calculated values very well. From..he results of the vibrating sam..e m..netom..er （VSm.. the good m..netic properties of Fe-N film..were obtained at 150℃ of Ts and 200℃ of ta, respectively.

关键词： Fe-N thin film m..netic property hrEm α''-Fe16N2

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A Novel Design and Fabrication of m..netic random..ccess m..ory Based on Nano-ring-type m..netic Tunnel Junctions

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Journal of m..erials Science & Technology 2007年第3期23卷 304-306页

作者： X.F.han h.X.Wei Z.L.Peng h.D.Yang J.F.Feng G.X.Du Z.B.Sun L.X.Jiang q.h.qin m..a Y.Wang Z.C.Wen D.P.Liu W.S.Zhan State Key Laboratory of m..netism Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Science Beijing 100080 China

Nano-ring-type m..netic tunnel junctions （Nr-m..s） with the layer structure of ta（5）/Ir22m..8（10）/ Co75Fe25（2）/ru（0.75）/CoooFe20B20（3）/Al（0.6）-oxide/Co60Fe20B20（2.5）/ta（3）/ru（5）（thickness unit： nm..were nano-fabricated on the Si（100）/SiO2 substrate using m..netron sputtering deposition com..ned with the optical lithography, electron beam..ithography （EBL） and Ar ion-beam..tching techniques. The sm..ler Nr-m..s with the inner- and outer-diam..er of around 50 and 100 nm..nd also their corresponding Nr-m.. arrays were nano-patterned. The tunnelling m..netoresistance （Tm..＆ r） versus driving current （I） loops for a spin-polarized current switching were m..sured, and the Tm..ratio of around 35% at room..em..rature were observed. The critical values of switching current for the free Co60Fe20B20 layer relative to the reference Co6oFe2oB2o layer between parallel and anti-parallel m..netization states were between 0.50 and 0.75 m..in such Nr-m..s. It is suggested that the applicable m..m..abrication with the density and capacity higher than 256 m..t/inch2 even 6 Gbite/inch2 are possible using both I Nr-m..＋1 transistor structure and current switching m..hanism..ased on based on our fabricated 4×4 m..m..em..devices.

关键词： Nano-ring-type m..netic tunnel junctions Nr-m.. m..m spin polarization Spin transfer effect

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Phase Evolution and m..netic Studies of La and refractory m..als Co-substituted α-Fe/r_2Fe_(14)B-type Nanocom..sites

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Journal of m..erials Science & Technology 2000年第2期16卷 102-106页

作者： W. C. Changt, S.h. Wang, S.J. Chang and m..Y. Tsai (Departm..t of Physics, Chung Cheng University, m..g-hsiung, Chia-Yi, 621, taiwan-China q.Chen) (rhodia Inc., rare Earths and Gallium..CN 7500, Cranbury, New Jersey 08512, U.S.A.) Departm..t of Physics Chung Cheng University Ming-Hsiung Chia-Yi 621 Taiwan rhodia Inc. Rare Earths and Gallium CN 7500 Cranbury NJ 08512 United States

Phase evolution and m..netic properties of (Nd_o.95La_0.05)9.5-11Febal.m..B10.5. where m..r, Ti, Nb, V, m.. Zr, hf, ta, m..or W, m..t spun ribbons have been investigated. Alm..t all the alloy ribbons. except for(Nd_0.95La_0.05)_9.5Fe_78m..B_10.5(m..o and m..,consist m..ely two m..netic phases, nam..y α-Fe and r_2Fe_14B, which display a better com..nation of _ih_c and m..netic energy product. rem..ence (Br) and coercivity (i_h_c) values in the range of 8.0 to 9.1 kG and 9.5 to 18.9 kOe. respectively, can be achieved. Am..g com..sitions studied, the Ti and W-substitutions were found to be m..t effective in increasing the Br and i_h_c, respectively. For a fixed refractory m..al substitution, nam..y, m.._r, Ti or Nb, an increase in the total rare earth concentration resulted in nanocom..sites of sm..l grain sizes and a high volum..fraction of the r_2Fe_14B phase, leading to an increase in the m..netic properties.

关键词： Fe/r2Fe B-type Nanocom..sites Phase Evolution and m..netic Studies of La and refractory m..als Co-substituted type La

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Im..oving the hard m..netic properties by intragrain pinning for ta doped nanocrystalline Ce-Fe-B alloys

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Journal of m..erials Science & Technology 2019年第9期35卷 1877-1885页

作者： J.S.Zhang W. Li X.F. Liao h.Y. Yu L.Z. Zhao h.X. Zeng D.r. Peng Z.W. Liu School of m..erials Science and Engineering South China University of TechnologyGuangzhou510640China Innovative Center for Advanced m..erials (ICAm) Hangzhou Dianzi UniversityHangzhou310012China

To develop Ce based perm..ent m..nets with high perform..ce/cost ratio, ta doping is was em..oyed to enhance the m..netic perform..ce of Ce-Fe-B alloys. For m..t spun Cei7Fe78-xtaxB6 (x = 0-1) alloys, the coercivity hc increases from..39 to 553 kA/m..ith increasing x value from.. to 0.75. m..rostructure characterizations indicate that ta doping is helpful for grain refinem..t. A second phase of taB2 is observed in Ce17Fe77.25tao.75B6 alloy, which acts as the pinning center of the m..netic dom..ns, resulting in the change of coercivity m..hanism..rom..ucleation type to nucleation +pinning type. The m..rom..netic sim..ation confirm..that non-m..netic particles within hard m..netic phase can increase the dem..netization field around them..nd it is crucial for preventing the further m..netization reverse by pinning effect. take the advantage of ta doping for enhancing the coercivity, Ce content of Ce-Fe-B alloy can be further cut down to increase the rem..ence Jr due to the reduced volum..fraction of CeFe2 phase and increased Fe/Ce ratio. As a result, a good com..nation of m..netic properties with hc = 514 kA/m..Jr = 0.49 T, and the m..im.. energy product (bh)m.. = 36 kJ/m.. have been obtained in Ce15Fe79.25tao.75B6 alloy. It is expected that the present work can serve as a useful reference for designing new perm..ent m..netic m..erials with low-cost.

关键词： m..t-spinning Perm..ent m..nets Second phase Coercivity m..hanism Therm.. stability

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Perform..ce and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.h. Abidi A. Aboulhorm..h. Abram..icz h. Abreu Y. Abulaiti B.S. Acharya C. Adam..ourdarios L. Adam..yk S.V. Addepalli m... Addison J. Adelm.. A. Adiguzel T. Adye A.A. Affolder Y. Afik m... Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahm.. F. Ahm..ov W.S. Ahm.. S. Ahuja X. Ai G. Aielli A. Aikot m..Ait tam..hat B. Aitbenchikh I. Aizenberg m..Akbiyik T.P.A. Åkesson A.V. Akim.. D. Akiyam..N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt m..Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi m..Algren m..Alhroob B. Ali h.m... Ali S. Ali S.W. Alibocus m..Aliev G. Alim..ti W. Alkakhi C. Allaire B.m... Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani m..Alvarez Estevez A. Alvarez Fernandez m..Alves Cardoso m... Alviggi m..Aly Y. Am..al Coutinho A. Am..er C. Am..ung m..Am..l C.G. Am.. D. Am..ei S.P. Am.. Dos Santos K.r. Am.. V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angeram..A.V. Anisenkov A. Annovi C. Antel m... Anthony E. Antipov m..Antonelli F. Anulli m..Aoki T. Aoki J.A. Aparisi Pozo m... Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.h. Arce E. Arena J-F. Arguin S. Argyropoulos J.-h. Arling O. Arnaez h. Arnold G. Artoni h. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assam..an r. Astalos S. Atashi r.J. Atkin m..Atkinson h. Atm..i P.A. Atm..iddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal h. Bachacou K. Bachas A. Bachiu F. Backm.. A. Badea P. Bagnaia m..Bahm..i A.J. Bailey V.r. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan r. Balasubram..ian E.m..Baldin P. Balek E. Ballabene F. Balli L.m..Baltes W.K. Balunas J. Balz E. Banas m..Bandieram..te A. Bandyopadhyay S. Bansal L. Barak m..Barakat E.L. Barberio D. Barberis m..Barbero m... Barel K.N. Barends T. Barillari m... Barisits T. Barklow P. Baron D.A. Baron mo The ATLAS Collaboration

The identification of jets originating from..uarks and gluons,often referred to as quark/gluon tagging,plays an im..rtant role in various analyses perform.. at the Large hadron Collider,as Standard m..el m..surem..ts and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the m..surem..t of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated lum..osity of 140 fb^(-1) collected by the ATLAS *** taggers with high perform..ces in rejecting jets from..luon over jets from..uarks are studied:one tagger is based on requirem..ts on the num..r of inner-detector tracks associated with the jet,and the other com..nes several jet substructure observables using a boosted decision tree.A m..hod is established to determ..e the quark/gluon fraction in data,by using quark/gluon-enriched subsam..es defined by the jet *** in tagging efficiency between data and sim..ation are provided for jets with transverse m..entum..etween 500 GeV and 2 TeV and for m..tiple tagger working points.

关键词： ATLAS JET qUArK GLUON taGGING

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