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Measurements of dihadron correlations relative to the event plane in Au+Au collisions at√^(s)NN=200 GeV

Chinese Physics C 2021年第4期45卷 198-241页

作者： H.Agakishiev M.M.Aggarwal Z.Ahammed A.V.Alakhverdyants I.Alekseev J.Alford B.d.Anderson C.d.Anson d.Arkhipkin G.s.Averichev J.Balewski d.R.Beavis N.K.Behera R.Bellwied M.J.Betancourt R.R.Betts A.Bhasin A.K.Bhat H.Bichsel J.Bieleik J.Bielcikova B.Biritz L.C.Bland W.Borowski J.Bouchet E.Braidot A.V.Brandin A.Bridgeman s.G.Brovko E.Bruna s.Bueltmann I.Bunzarov t.P.Burton X.Z.Cai H.Caines M.Calderon de la Barca sanchez d.Cebra R.Cendejas M.C.Cervantes Z.Chajecki P.Chaloupka s.Chattopadhyay H.F.Chen J.H.Chen J.Y.Chen L.Chen J.Cheng M.Cherney A.Chikanian K.E.Choi W.Christie P.Chung M.J.M.Codrington R.Corliss J.G.Cramer H.J.Crawford s.dash A.davila Leyva L.C.de silvat R.R.debbe t.G.dedovich A.A.derevschikov R.derradi de souza L.didenko P.djawotho s.M.dogra X.dong J.L.drachenberg J.E.draper J.C.dunlop L.G Efimov M.Elnim J.Engelage G Eppley M.Estienne L.Eun O.Evdokimov R.Fatemi J.Fedorisin A.Feng R.G.Fersch P.Filip E.Finch V.Fine Y.Fisyak C.A.Gagliardi d.R.Gangadharan A.Geromitsos F.Geurts P.Ghosh Y.N.Gorbunov A.Gordon O.Grebenyuk d.Grosnick s.M.Guertin A.Gupta W.Guryn B.Haag O.Hajkova A.Hamed L-X.Han J.W.Harris J.P.Hays-Wehle M.Heinz s.Heppelmann A.Hirsch E.Hjort G.W.Hoffmann d.J.Hofiman B.Huang H.Z.Huang t.J.Humanic L.Huo G.Igo P.Jacobs W.W.Jacobs C.Jena F.Jin J.Joseph E.G.Judd s.Kabana K.Kang J.Kapitan K.Kauder H.Ke d.Keane A.Kechechyan d.Kettler d.P.Kikola J.Kiryluk A.Kisiel V.Kizka A.G.Knospe d.d.Koetke t.Kollegger J.Konzer I.Koralt L.Koroleva W.Korsch L.Kotchenda V.Kouchpil P.Kravtsov K.Krueger M.Krus L.Kumar P.Kurnadi M.A.C.Lamont J.M.Landgraf s.LaPointe J.Lauret A.Lebedev R.Lednicky J.H.Lee W.Leight M.J.LeVine C.Lil L.Li N.Li W.Li X.Li X.Li Y.Li Z.M.Li M.A.Lisa F.Liu H.Liu J.Liu t.Ljubicic W.J.Llope R.s.Longacre W.A.Love Y.Lu E.V.Lukashov X.Luo G.L.Ma Y.G.Mai d.P.Mahapatra R.Majka O.I.Mall L.K.Mangotra R.Manweiler s.Margetis C.Markert H.Masui H.s.Matis Yu.A.Matulenko d.Medonald t.s.Mcshane A.Meschanin R.Milner N.G.Minaev s.Mioduszewski A.Mischke M.K.Mitrovski B.Mohanty M.M.Mondal B.Morozov d.A.Morozov M.G.Munhoz M Argonne National Laboratory Argonnellinois 60439USA Brookhaven National Laboratory UptonNew York 11973USA University of Califomia BerkeleyCaliformnia 94720USA University of California DavisCalifornia 95616USA University of Califormnia Los AngelesCalifomia 90095USA Universidade Estadual de Campinas Sao PauloBrazil University of Illinois at Chicago ChicagoIlinois 60607USA Creighton University OmahaNebraska 68178USA Czech technical University in Prague FNSPEPrague11519Czech Republic Nuclear Physics Institute As CR 25068 Rez/PragueCzech Republic University of Frankfurt FrankfurtGermany Institute of Physics Bhubaneswar 751005India Indian Institute of technology MumbaiIndia Indiana University BloomingtonIndiana 47408USA Alikhanov Instiute for theoretical and Experimental Physics MoscowRussia University of Jammu Jammu 180001India Joint Institute for Nuclear Research Dubna141980Russia Kent state University KentOhio 44242USA University of Kentucky LexingtonKentucky40506-0055USA Institute of Modern Physics LanzhouChina Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720USA Massachusetts Institute of technology CambridgeMA 02139-4307USA Mx-Planck-Institut fir Physik MunichGermany Michigan state University East LansingMichigan 48824USA Moscow Engineering Physics Institute Moscow Russia NIKHEF and Utrecht University AmsterdamThe Netherlands Ohio state University ColumbusOhio 43210USA Old dominion University NorfolkVA23529USA Panjab University Chandigarh 160014India PennsyIvania state University University ParkPennsylvania 16802USA Institute of High Energy Physics ProtvinoRussia Purdue University West LafayetteIndiana 47907USA Pusan National University PusanRepublic of Korea University of Rajasthan Jaipur 302004India Rice University HoustonTexas 77251USA Universidade de sao Paulo Sao PauloBrazil University of science&technology of China Hefei 230026.China shandong University JinanShandong 250100China shanghai Institute of Applied Physics Shanghai 201800Chi

dihadron azimuthal correlations containing a high transverse momentum(pr)trigger particle are sensit-ive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium,*** measurements revealed a strong modification to di-hadron azimuthal correlations in Au+Au collisions with respect to ptp and d+Au *** modification in-creases with the collision centrality,suggesting a path-length or energy density dependence to the je-quenching *** paper reports stAR measurements of dihadron azimuthal correlations in mid-central(20%-60%)Au+Au collisions at√^(s)NN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane,Ф_(s)=|Ф_(t)-ψ_(Ep)|.the azimuthal correlation is studied as a function of both the trigger and associated particle *** subtractions of the combinatorial background and anisotropic flow,assuming Zero Yield At Minimum(ZYAM),are *** correlation results are first discussed with subtraction of the even harmonic(elliptic and quadrangu-lar)flow *** away-side correlation is strongly modifed,and the modification varies withФ_(s),with a double-peak structure for out-of-plane trigger *** near-side ridge(long range pseudo-rapidity△_(η)correla-tion)appears to drop with increasingФ_(s)while the jet-like component remains approximately *** correla-tion functions are further studied with the subtraction of odd harmonic triangular flow background arising from *** is found that the triangular flow,while responsible for the majority of the amplitudes,is not sufficient to explain theφs-dependence of the ridge or the away-side double-peak *** dropping ridge withФ_(s)could be attributed to aФ_(s)-dependent lliptie anisotropy;however,the physics mechanism of the ridge remains an open *** with aФ_(s)-dependent elliptic flow,the away-side correlation structure

关键词： relativistic heavy ion collisions dihadron correlations jet-medium interactions anisotropic flow background event plane

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Methods for a blind analysis of isobar data collected by the stAR collaboration

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Nuclear science and techniques 2021年第5期32卷 43-50页

作者： J.Adam L.Adamczyk J.R.Adams J.K.Adkins G.Agakishiev M.M.Aggarwal Z.Ahammed I.Alekseev d.M.Anderson A.Aparin E.C.Aschenauer M.U.Ashraf F.G.Atetalla A.Attri G.s.Averichev V.Bairathi K.Barish A.Behera R.Bellwied A.Bhasin J.Bielcik J.Bielcikova L.C.Bland I.G.Bordyuzhin J.d.Brandenburg A.V.Brandin J.Butterworth H.Caines M.Calderon de la Barca sanchez d.Cebra I.Chakaberia P.Chaloupka B.K.Chan F-H.Chang Z.Chang N.Chankova-Bunzarova A.Chatterjee d.Chen J.Chen J.H.Chen X.Chen Z.Chen J.Cheng M.Cherney M.Chevalier s.Choudhury W.Christie X.Chu H.J.Crawford M.Csanad M.daugherity t.G.dedovich I.M.deppner A.A.derevschikov L.didenko X.dong J.L.drachenberg J.C.dunlop t.Edmonds N.Elsey J.Engelage G.Eppley s.Esumi O.Evdokimov A.Ewigleben O.Eyser R.Fatemi s.Fazio P.Federic J.Fedorisin C.J.Feng Y.Feng P.Filip E.Finch Y.Fisyak A.Francisco L.Fulek C.A.Gagliardi t.Galatyuk F.Geurts A.Gibson K.Gopal X.Gou d.Grosnick W.Guryn A.I.Hamad A.Hamed s.Harabasz J.W.Harris s.He W.He X.H.He Y.He s.Heppelmann s.Heppelmann N.Herrmann E.Hoffman L.Holub Y.Hong s.Horvat Y.Hu H.Z.Huang s.L.Huang t.Huang X.Huang t.J.Humanic P.Huo G.Igo d.Isenhower W.W.Jacobs C.Jena A.Jentsch Y.Ji J.Jia K.Jiang s.Jowzaee X.Ju E.G.Judd s.Kabana M.L.Kabir s.Kagamaster d.Kalinkin K.Kang d.Kapukchyan K.Kauder H.W.Ke d.Keane A.Kechechyan M.Kelsey Y.V.Khyzhniak d.P.Kikoła C.Kim B.Kimelman d.Kincses t.A.Kinghorn I.Kisel A.Kiselev M.Kocan L.Kochenda L.K.Kosarzewski L.Kramarik P.Kravtsov K.Krueger N.Kulathunga Mudiyanselage L.Kumar s.Kumar R.Kunnawalkam Elayavalli J.H.Kwasizur R.Lacey s.Lan J.M.Landgraf J.Lauret A.Lebedev R.Lednicky J.H.Lee Y.H.Leung C.Li C.Li W.Li W.Li X.Li Y.Li Y.Liang R.Licenik t.Lin Y.Lin M.A.Lisa F.Liu H.Liu P.Liu P.Liu t.Liu X.Liu Y.Liu Z.Liu t.Ljubicic W.J.Llope R.s.Longacre N.s.Lukow s.Luo X.Luo G.L.Ma L.Ma R.Ma Y.G.Ma N.Magdy R.Majka d.Mallick s.Margetis C.Markert H.s.Matis J.A.Mazer N.G.Minaev s.Mioduszewski B.Mohanty I.Mooney Z.Moravcova d.A.Morozov M.Nagy J.d.Nam Md.Nasim K.Nayak d.Neff J.M.Nelson d.B.Nemes M.Nie G.Nigmatkulov t.Niida L.V.Nogach t.Nonak Christian University AbileneTX 796992 AGH University of science and technology FPACSCracow 30-059Poland Alikhanov Institute for theoretical and Experimental Physics NRC"Kurchatov Institute" MoscowRussia 117218 Argonne National Laboratory ArgonneIL 60439 American University of Cairo New CairoNew Cairo 11835Egypt Brookhaven National Laboratory UptonNY 11973 University of California BerkeleyCA 94720 University of California DavisCA 95616 University of California Los AngelesCA 90095 University of California RiversideCA 92521 Central China Normal University Wuhan 430079 University of Illinois at Chicago ChicagoIL 60607 Creighton University OmahaNE 68178 Czech technical University in Prague FNSPEPrague 11519Czech Republic technische Universitat darmstadt Darmstadt 64289Germany ELtE Eotvos Lorand University Budapest 1117Hungary Frankfurt Institute for Advanced studies FIAs Frankfurt 60438Germany Fudan University Shanghai 200433 University of Heidelberg 69120 HeidelbergGermany University of Houston HoustonTX 77204 Huzhou University Huzhou 313000 Indian Institute of science Education and Research(IIsER) Berhampur 760010India Indian Institute of science Education and Research(IIsER)tirupati Tirupati 517507India Indian Institute technology PatnaBihar 801106India Indiana University BloomingtonIN 47408 Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000 University of Jammu Jammu 180001India Joint Institute for Nuclear Research DubnaRussia 141980 Kent state University KentOH 44242 University of Kentucky LexingtonKY 40506-0055 Lawrence Berkeley National Laboratory BerkeleyCA 94720 Lehigh University BethlehemPA 18015 Max-Planck-Institut fur Physik 80805 MunichGermany Michigan state University East LansingMI 48824 National Research Nuclear University MEPhI MoscowRussia 115409 National Institute of science Education and Research HBNIJatni 752050India National Cheng Kung University Tainan 70101 Nuclear Physics Institute of the CAs Rez 25068Czech Republic Ohio state University

In 2018,the stAR collaboration collected data from^(96)_(44)Ru+^(96)_(44)Ru and^(96)_(40)Zr+^(96)_(40)Zr at√^(s)NN=200 Ge V to search for the presence of the chiral magnetic effect in collisions of *** isobar collision species alternated frequently between 9644 Ru+^(96)_(44)Ru and^(96)_(40)Zr+^(96)_(40)*** order to conduct blind analyses of studies related to the chiral magnetic effect in these isobar data,stAR developed a three-step blind analysis *** are initially provided a"reference sample"of data,comprised of a mix of events from the two species,the order of which respects time-dependent changes in run *** tuning analysis codes and performing time-dependent quality assurance on the reference sample,analysts are provided a species-blind sample suitable for calculating efficiencies and corrections for individual≈30-min data-taking *** this sample,species-specific information is disguised,but individual output files contain data from a single isobar *** run-by-run corrections and code alteration subsequent to these corrections are allowed at this *** these modifications,the"frozen"code is passed over the fully un-blind data,completing the blind *** a check of the feasibility of the blind analysis procedure,analysts completed a"mock data challenge,"analyzing data from Au+Au collisions at√^(s)NN=27 Ge V,collected in *** Au+Au data were prepared in the same manner intended for the isobar blind *** details of the blind analysis procedure and results from the mock data challenge are presented.

关键词： Blind analysis Chiral magnetic effect Heavy-ion collisions

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Measurement of away-side broadening with self-subtraction of flow in Au+Au collisions at √sNN=200 GeV

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Chinese Physics C 2020年第10期44卷 59-67页

作者： L.Adamczyk J.R.Adams J.K.Adkins G.Agakishiev M.M.Aggarwal Z.Ahammed I.Alekseev d.M.Anderson A.Aparin E.C.Aschenauer M.U.Ashraf F.G.Atetalla A.Attri G.s.Averichev V.Bairathi K.Barish A.Behera R.Bellwied A.Bhasin J.Bielcik J.Bielcikova L.C.Bland I.G.Bordyuzhin J.d.Brandenburg A.V.Brandin J.Butterworth H.Caines M.Calderón de la Barca sánchez d.Cebra I.Chakaberia P.Chaloupka B.K.Chan F-H.Chang Z.Chang N.Chankova-Bunzarova A.Chatterjee d.Chen J.H.Chen X.Chen Z.Chen J.Cheng M.Cherney M.Chevalier s.Choudhury W.Christie X.Chu H.J.Crawford M.Csanád M.daugherity t.G.dedovich I.M.deppner A.A.derevschikov L.didenko X.dong J.L.drachenberg J.C.dunlop t.Edmonds N.Elsey J.Engelage G.Eppley s.Esumi O.Evdokimov A.Ewigleben O.Eyser R.Fatemi s.Fazio P.Federic J.Fedorisin C.J.Feng Y.Feng P.Filip E.Finch Y.Fisyak A.Francisco L.Fulek C.A.Gagliardi t.Galatyuk F.Geurts A.Gibson K.Gopal d.Grosnick W.Guryn A.I.Hamad A.Hamed s.Harabasz J.W.Harris s.He W.He X.H.He s.Heppelmann s.Heppelmann N.Herrmann E.Hoffman L.Holub Y.Hong s.Horvat Y.Hu H.Z.Huang s.L.Huang t.Huang X.Huang t.J.Humanic P.Huo G.Igo d.Isenhower W.W.Jacobs C.Jena A.Jentsch Y.JI J.Jia K.Jiang s.Jowzaee X.Ju E.G.Judd s.Kabana M.L.Kabir s.Kagamaster d.Kalinkin K.Kang d.Kapukchyan K.Kauder H.W.Ke d.Keane A.Kechechyan M.Kelsey Y.V.Khyzhniak d.P.Kikoła C.Kim B.Kimelman d.Kincses t.A.Kinghorn I.Kisel A.Kiselev M.Kocan L.Kochenda L.K.Kosarzewski L.Kramarik P.Kravtsov K.Krueger N.Kulathunga Mudiyanselage L.Kumar s.Kumar R.Kunnawalkam Elayavalli J.H.Kwasizur R.Lacey s.Lan J.M.Landgraf J.Lauret A.Lebedev R.Lednicky J.H.Lee Y.H.Leung C.Li W.Li W.Li X.Li Y.Li Y.Liang R.Licenik t.Lin Y.Lin M.A.Lisa F.Liu H.Liu P.Liu P.Liu t.Liu X.Liu Y.Liu Z.Liu t.Ljubicic W.J.Llope R.s.Longacre N.s.Lukow s.Luo X.Luo G.L.Ma L.Ma R.Ma Y.G.Ma N.Magdy R.Majka d.Mallick s.Margetis C.Markert H.s.Matis J.A.Mazer N.G.Minaev s.Mioduszewski B.Mohanty I.Mooney Z.Moravcova d.A.Morozov M.Nagy J.d.Nam Nasim Md K.Nayak d.Neff J.M.Nelson d.B.Nemes M.Nie G.Nigmatkulov t.Niida L.V.Nogach t.Nonaka A.s.Nunes G.Odyniec A.Ogawa Abilene Christian University AbileneTexas 79699 AGH University of science and technology FPACSCracow 30-059Poland Alikhanov Institute for theoretical and Experimental Physics NRC"Kurchatov Institute" Moscow 117218Russia Argonne National Laboratory ArgonneIllinois 60439 American University of Cairo New Cairo 11835New CairoEgypt Brookhaven National Laboratory UptonNew York 11973 University of California BerkeleyCalifornia 94720 University of California DavisCalifornia 95616 University of California Los AngelesCalifornia 90095 University of California RiversideCalifornia 92521 Central China Normal University WuhanHubei 430079 University of Illinois at Chicago ChicagoIllinois 60607 Creighton University OmahaNebraska 68178 Czech technical University in Prague FNSPEPrague 11519Czech Republic technische Universität darmstadt Darmstadt 64289Germany ELtE Eötvös Loránd University BudapestHungary H-1117 Frankfurt Institute for Advanced studies FIAs Frankfurt 60438Germany Fudan University Shanghai 200433 University of Heidelberg Heidelberg 69120Germany University of Houston HoustonTexas 77204 Huzhou University HuzhouZhejiang 313000 Indian Institute of science Education and Research(IIsER) Berhampur 760010India Indian Institute of science Education and Research(IIsER)tirupati Tirupati 517507India Indian Institute technology PatnaBihar 801106India Indiana University BloomingtonIndiana 47408 Institute of Modern Physics Chinese Academy of SciencesLanzhouGansu 730000 University of Jammu Jammu 180001India Joint Institute for Nuclear Research Dubna 141980Russia Kent state University KentOhio 44242 University of Kentucky LexingtonKentucky 40506-0055 Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Lehigh University BethlehemPennsylvania 18015 Max-Planck-Institut für Physik Munich 80805Germany Michigan state University East LansingMichigan 48824 National Research Nuclear University MEPhI Moscow 115409Russia National Institute of science Education and Research HBNIJatni 752050Indi

High transverse momentum(pt)particle production is suppressed owing to the parton(jet)energy loss in the hot dense medium created in relativistic heavy-ion *** of energy at low-to-modest pt has been difficult to measure,owing to large anisotropic *** report a data-driven method for background evaluation and subtraction,exploiting the away-side pseudorapidity gaps,to measure the jetlike correlation shape in Au+Au collisions at √sNN=200 GeV in the stAR *** correlation shapes,for trigger particles pt>3GeV/c and various associated particle pt ranges within 0.5tsistent with Gaussians,and their widths increase with *** results indicate jet broadening in the medium created in central heavy-ion collisions.

关键词： di-hadron correlations jet heavy-ion

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Polyethylene glycol has immunoprotective effects on sciatic allografts, but behavioral recovery and graft tolerance require neurorrhaphy and axonal fusion

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Neural Regeneration Research 2025年第4期20卷 1192-1206页

作者： tyler A.smith Liwen Zhou Cameron L.Ghergherehchi Michelle Mikesh Cathy Z.Yang Haley O.tucker JuliAnne Allgood Jared s.Bushman George d.Bittner department of Molecular Biosciences University of Texas at AustinAustinTXUSA department of Neuroscience University of Texas at AustinAustinTXUSA division of Pharmaceutical sciences University of WyomingLaramieWYUSA

Behavioral recovery using(viable)peripheral nerve allografts to repair ablation-type(segmental-loss)peripheral nerve injuries is delayed or poor due to slow and inaccurate axonal ***,such peripheral nerve allografts undergo immunological rejection by the host immune *** contrast,peripheral nerve injuries repaired by polyethylene glycol fusion of peripheral nerve allografts exhibit excellent behavioral recovery within weeks,reduced immune responses,and many axons do not undergo Wallerian *** relative contribution of neurorrhaphy and polyethylene glycol-fusion of axons versus the effects of polyethylene glycol per se was unknown prior to this *** hypothesized that polyethylene glycol might have some immune-protective effects,but polyethylene glycol-fusion was necessary to prevent Wallerian degeneration and functional/behavioral *** examined how polyethylene glycol solutions per se affect functional and behavioral recovery and peripheral nerve allograft morphological and immunological responses in the absence of polyethylene glycol-induced axonal ***-type sciatic nerve injuries in outbred sprague–dawley rats were repaired according to a modified protocol using the same solutions as polyethylene glycol-fused peripheral nerve allografts,but peripheral nerve allografts were loose-sutured(loose-sutured polyethylene glycol)with an intentional gap of 1–2 mm to prevent fusion by polyethylene glycol of peripheral nerve allograft axons with host *** to negative control peripheral nerve allografts not treated by polyethylene glycol and in contrast to polyethylene glycol-fused peripheral nerve allografts,animals with loose-sutured polyethylene glycol peripheral nerve allografts exhibited Wallerian degeneration for all axons and myelin degeneration by 7 days postoperatively and did not recover sciatic-mediated behavioral functions by 42 days *** morphological signs of rejection,such as col

关键词： allograft rejection axotomy macrophage myelin nerve repair polyethylene glycol(PEG) sciatic nerve t cell transplantation Wallerian degeneration

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deciphering the mechanobiology of microglia in traumatic brain injury with advanced microsystems

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Neural Regeneration Research 2025年第8期20卷 2304-2306页

作者： Anthony Procès sylvain Gabriele Univ.Grenoble Alpes InsermU1216Grenoble Institut des NeurosciencesGrenobleFrance Mechanobiology&Biomaterials Group CIRMAPResearch Institute for BiosciencesUniversity of MonsMonsBelgium

Advanced microsystems in traumatic brain injury research:traumatic brain injury(tBI)results from a mechanical insult to the brain,leading to neuronal and axonal damage and subsequently causing a secondary *** minutes ... 详细信息

关键词： traumatic injury damage

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thermal stress relaxation in shot peened and laser peened nickel-based superalloy

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Journal of Materials science & technology 2020年第24期59卷 100-106页

作者： K.s.Chin s.Idapalapati d.t.Ardi school of Mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore Advanced Remanufacturing and technology Centre 3 CleanTech LoopCleanTech Two#01/01Singapore 637143Singapore

the effects of cold work produced by peening processes in residual stress relaxation under elevated temperatures were *** types of peening processes namely shot peening and laser peening were used to generate different amount of cold work and residual stresses in the *** of residual stress induced by cold working were carried out using X-ray diffraction coupled with electrochemical polishing method to measure the variation of residual stress with *** stresses in shot peened samples were observed to relax more rapidly than that of laser peened ones when subjected to thermal *** data collected from the experimental investigation was then used to build a correlation function to model the effects of cold work on residual stress relaxation.A parameter describing cold work’s contribution to stress relaxation is introduced into the well-known Zener-WertAvrami(ZWA)*** model was validated against experimental measurements and showed good agreement in both shot peened and laser peened samples.

关键词： Residual stress Cold work surface treatment Nickel-based superalloys

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synthesis and electrocatalytic applications of flower-like motifs and associated composites of nitrogen-enriched tungsten nitride(W2N3)

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Nano Research 2020年第5期13卷 1434-1443页

作者： sha tan Brian M.tackett Qun He Ji Hoon Lee Jingguang G.Chen stanislaus s.Wong department of Chemistry State University of New York at Stony BrookStony BrookNY 11794-3400USA department of Chemical Engineering Columbia UniversityNew YorkNY 10027USA Chemistry department Building 555Brookhaven National LaboratoryUptonNY 11973USA

We have sought to improve the electrocatalytic performance of tungsten nitride through synthetic control over chemical composition and *** particular,we have generated a thermodynamically unstable but catalytically promising nitrogen-rich phase of tungsten via a hydrothermal generation of a tungsten oxide intermediate and subsequent annealing in *** net product consisted of three-dimensional(3d)micron-scale flower-like motifs of W2N3;this architecture not only evinced high structural stability but also incorporated the favorable properties of constituent two-dimensional *** a performance perspective,as-prepared 3d W2N3 demonstrated promising hydrogen evolution reaction(HER)activities,especially in an acidic environment with a measured overpotential value of−101 mV at a current density of 10 mA/cm^*** further enhance the electrocatalytic activity,small amounts of precious metal nanoparticles(such as Pt and Au),consisting of variable sizes,were uniformly deposited onto the underlying 3d W2N3 motifs using a facile direct deposition method;these composites were applied towards the CO2 reduction reaction(CO2RR).A highlight of this series of experiments was that Au/W2N3 composites were found to be a much more active HER(as opposed to either a CO2RR or a methanol oxidation reaction(MOR))catalyst.

关键词： tungsten nitride synthesis composite morphology control electrocatalysis

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Phase Formation and Magnetic Properties of Nanocomposite Nd-Fe-B Adjusted by small Amount of dy and Co

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Journal of Rare Earths 2004年第Z2期22卷 89-94页

作者： t s Jang t W Lim H s Aum d H Lee M B Kim division of Materials and Chemical Engineering Sun Moon UniversityKorea Division of Materials and Chemical EngineeringSun Moon UniversityKorea Division of Mechanical EngineeringSun Moon University 100 Kalsan LiTangjung MyonAsan CityChoongnam 336-708Korea Division of Materials and Chemical EngineeringSun Moon UniversityKorea Division of Materials and Chemical EngineeringSun Moon UniversityKorea

In order to improve and stabilize the magnetic properties of nanocomposite Nd2Fe14B/α-Fe magnetic alloys by a compositional adjustment, small amount of dy and/or Co was added to Nd9Fe84B7 alloys. dtA analysis on the amorphous of the alloys took place as the soft magnetic phases were crystallized, and then the hard magnetic Nd2Fe14B was precipitated from them. While α-Fe and a metastable 1:7 (tbCu7-type) phase were formed simultaneously in dy and Co-free alloys, they were crystallized separately at different temperatures after dy or Co was added. this phase separation occurred more clearly in the dy-treated alloys and the other soft magnetic phase Fe3B was also stabilized by dy and/or Co. the 1: 7 phase that was stabilized by dy and/or Co was not eliminated at 700 ℃, decreasing magnetic properties of the alloys. It was eventually disappeared above 725 ℃, but Fe3B was not eliminated even at 750 ℃ when dy was added more than 0.5 at% or Co was added more than 2.0 at%. Amount of Nd2Fe14B in the alloys tended to increase as dy addition increased,whereas Co addition did not lead to any appreciable change in the ratio of α-Fe and Nd2Fe14B. Moreover, dy addition apparently increased coercivity of an alloy while Co addition had a beneficial effect on remanence. the grains in the dytreated alloys were usually finer than those in the Co-treated alloys. the grain size of both α-Fe and Nd2Fe14B in the alloys exhibiting mr ≥ 0.72 was in the range of 20 ～ 40 nm or even larger 50 nm, which is larger than the theoretical optimum size ( ～ 10 nm). typical magnetic properties obtained from a Nd7.5dy1.5Fe82.5Co1.5B7 alloy annealed for 12 min at 725 ℃were iHc=4.85 kOe, Br= 11.32 kG, (BH)max = 15.73 MGOe, and mr=0.73.

关键词： nanocomposite Nd-Fe-B magnetic properties remanence coercivity

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Modelling of nanostructured tiO_2-based memristors

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Journal of semiconductors 2015年第3期36卷 52-54页

作者： s.s.shinde t.d.dongle shivaji University Korea Research Institute of standards and science

the fourth fundamental circuit element memristor completes the missing link between charge and mag- netic flux. It consists of the function of the resistor as well as memory in nonlinear fashion. the property of the memristor depends on the magnitude and direction of applied potential. this unique property makes it the primi- tive building block for many applications such as resistive memories, soft computing, neuromorphic systems and chaotic circuits etc. In this paper we report tiO2-based nanostructured memristor modelling. the present memris- tor model is constructed in MAtLAB environment with consideration of the linear drift model of memristor. the result obtained from the linear drift model is well matched with earlier reported results by other research groups.

关键词： memristor linear drift model tiO2

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dispersion of Axisymmetric Longitudinal Waves in A Bi-Material Compound solid Cylinder Made of Viscoelastic Materials

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Computers, Materials & Continua 2016年第2期51卷 105-143页

作者： s.d.Akbarov t.Kocal t.Kepceler department of Mechanical Engineering Yildiz Technical UniversityYildiz Campus34349BesiktasIstanbulTurkey Institute of Mathematics and Mechanics of the National Academy of sciences of Azerbaijan 37041BakuAzerbaijan department of Marine Engineering Operations Yildiz Campus34349 BesiktasIstanbulTurkey

the paper studies the dispersion of axisymmetric longitudinal waves in the bi-material compound circular cylinder made of linear viscoelastic *** investigations are carried out within the scope of the piecewise homogeneous body model by utilizing the exact equations of linear *** corresponding dispersion equation is derived for an arbitrary type of hereditary operator and the algorithm is developed for its numerical *** numerical results are obtained for the case where the relations of the constituents of the cylinder are described through fractional exponential *** influence of the viscosity of the materials of the compound cylinder on the wave dispersion is studied through the rheological parameters which indicate the characteristic creep time and long-term values of the elastic constants of these *** curves are presented for certain selected dispersive and non-dispersive attenuation cases under various values of the problem parameters and the influence of the aforementioned rheological parameters on these curves is *** a result of the numerical investigations,in particular,it is established that in the case where the rheological parameters of the components of the compound cylinder are the same,the viscosity of the layers’materials causes the axisymmetric wave propagation velocity to decrease.

关键词： Characteristic creep time Viscoelastic material Wave dispersion Bi-material compound solid cylinder Wave attenuation

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