Abstract：Generationofhotcarriersintransitionmetalcatalyststhroughphotoexcitationhasbeendemonstratedtobeapromisingapproachcapableofsignificantlyloweringactivationtemperatureofthecatalysts,whichcouldhaveawidespreadimpactonsubstantiallyreducingthecurrentenergydemandsandimprovingtheselectivityofheterogeneouscatalysis.PlasmonicnanoparticlesmadeofAu,Ag,Cu,andAlarerecentlyfocusedbecausetheycanactivelyabsorblightatthecorrespondingsurfaceplasmonresonance(SPR)frequencies,whichareusuallyinthevisiblespectralregion.Thehighopticalabsorptionsleadtothegenerationofhotcarriersinplasmonicnanoparticles,onwhichthehotcarrierscandirectlydrivechemicaltransformations.Despitethepromise,plasmonicmetalnanoparticlesarenotusefulcatalystsforawiderangeofimportantreactions.Incontrast,platinum-groupmetals(PGMs)suchasPt,Pd,RuorRhareexcellentcatalyticmaterialsbutexhibitSPRintheultraviolet(UV)spectralregion,whichrepresentsasignificantdisadvantageforphotocatalysisduetothepooroverlapwiththesolarspectrum.AlthoughincreasingsizeofPGMnanoparticlesshiftsSPRabsorptiontothered,itincreasescostandreducessurfaceareaandthuscatalyticactivity.Moreover,increasingthesizeofmetalnanocrystalssignificantlyreducestheyieldofhotelectrongeneration,loweringtheefficiencyofphotochemicalenergyconversion.Inthispresentation,anewlightabsorptionmodelwillbediscussedtodemonstrateatransformativewaytoenhanceopticalabsorptioninsmallPGMnanoparticlesinthevisiblespectralregionbyadjustingtheirdielectricenvironmentinsteadofchangingtheirsize.Inthismodel,the“quantum-sized”metalnanocrystalsareattachedtosurfacesoftransparentsilicaspheres,whichcansupportavarietyofdielectricscatteringresonances(e.g.,Fabry-PerotorWhisperingGallerymodesdependingonthesizeofsilicaspheres)capableofcreatingstrongelectricfieldsnearthesilicasurface.Theintensifiednearfieldscandramaticallyenhancetheabsorptioncross-sectionofthemetalnanocrystals,whichareonthesilicasurface,thusimprovingtheyieldof“hotelectrons”inthemetalnanocrystals.ThisnewmodelprovidesauniqueopportunitytoefficientlygeneratehotcarriersinthePMGmetalnanoparticlesuponexcitationofsolarenergy.Biography：Dr.YugangSunobtainedhisB.SandPh.DdegreefromUniversityofScienceandTechnologyofChina(USTC)in1996and2001,respectively.HethenworkedasapostdoctoralfellowwithProf.YounanXiaattheUniversityofWashingtonandProf.JohnA.RogersattheUniversityofIllinoisatUrbana-Champaign.In2006,Dr.SunjoinedtheCenterforNanoscaleMaterialsatArgonneNationalLaboratory(ANL)tostarthisindependentresearchcareer.HemovedtoChemistryDepartmentofTempleUniversityinJanuary2016.HereceivedthePresidentialEarlyCareerAwardforScientistsandEngineers(PECASE)in2007andDOE’sOfficeofScienceEarlyCareerScientistandEngineeringAwardin2008.Hisworkhasasignificantimpactthefieldofnanomaterials,andhewaslistedinthetop100chemists(#62)andtop100Materialsscientists(#5)analyzedbyThomsonReutersin2011.Hisresearchiscenteredinthedesign/synthesisofhybridnanostructuresaswellasinvestigationofnovelpropertiesofthesynthesizednanostructuresinthecontextofnanophotonics,photocatalysis,sensing,andenergystorage/conversion.

Abstract：Symmetry,interactionandtopologicaleffects,aswellasenvironmentalscreening,dominatemanyofthequantumpropertiesofreduced-dimensionalsystemsandnanostructures.Theseeffectsoftenleadtomanifestationofcounter-intuitiveconceptsandphenomenathatmaynotbesoprominentorhavenotbeenseeninbulkmaterials.Inthistalk,Ipresentsomefascinatingphysicalphenomenadiscoveredinrecentstudiesofatomicallythinone-dimensional(1D)andtwo-dimensional(2D)materials.Anumberofhighlyinterestingandunexpectedbehaviorshavebeenfound–e.g.,stronglyboundexcitons(electron-holepairs)withunusualenergylevelstructuresandnewtopology-dictatedopticalselectionrules;tunablemagnetismandplasmonicproperties;noveltopologicalphases;correlatedmulti-particleexcitations;etc.–addingtothepromiseof1Dand2Dmaterialsforexplorationofnewscienceandvaluableapplications.　　ThisworkwassupportedbytheU.S.DepartmentofEnergy,NationalScienceFoundation,andOfficeofNavalResearch.Biosketch：　　ProfessorLouiereceivedhisPh.D.inphysicsfromtheUniversityofCaliforniaatBerkeley(UCBerkeley)in1976.AfterhavingworkedattheIBMWatsonResearchCenter,BellLabs,andUofPenn,hejoinedtheUCBerkeleyfacultyin1980,whereheisprofessorofphysicsandconcurrentlyafacultyseniorscientistattheLawrenceBerkeleyNationalLab.HeisamemberoftheNationalAcademyofSciences,theAmericanAcademyofArts&Sciences,andtheAcademiaSinica(Taiwan),aswellasafellowoftheAmericanPhysicalSociety(APS)andtheAmericanAssociationfortheAdvancementofScience.Amonghismanyhonors,heisrecipientoftheAPSAneesurRahmanPrizeforComputationalPhysics,theAPSDavisson-GermerPrizeinSurfacePhysics,theMaterialsTheoryAwardoftheMaterialsResearchSociety,theForesightInstituteRichardP.FeynmanPrizeinNanotechnology,theU.S.DepartmentofEnergyAwardforSustainedOutstandingResearchinSolidStatePhysics,aswellasJubileeProfessoroftheChalmersUniversityofTechnologyinSwedenandH.C.?rstedLectureroftheTechnicalUniversityofDenmark.ProfessorLouie’sresearchspansabroadspectrumoftopicsintheoreticalcondensedmatterphysicsandnanoscience.HeisknownforhisgroundbreakingworkontheabinitioGWmethodandforhisseminalworkonsurfacesandinterfaces,nanostructures,andreduced-dimensionalsystems.

Abstract：Solarenergyconversionandstorageintoahighdensityenergymediume.gH2viawatersplittinghasbeenattractingsubstantialinterestoverthelastdecade,whichcanprovidenotonlyrenewableH2fuelbutalsoacarbon-zeroeconomy.Thekeyinthistechnologyisanefficientphotocatalyst.ThecurrentlowefficiencyinwatersplittingtoH2fuelprocessiscontributedtobothfastchargerecombinationandlargebandgapofaninorganicsemiconductor.1Stimulatedbyourrecentresearchoutcomesonthechargedynamicsininorganicsemiconductorphotocatalysts,wedevelopednovelmaterialsstrategiesforsolardrivenhydrogensynthesisbypolymerphotocatalysts.Oneistomitigatethechargerecombinationbyimprovingthedegreeofpolymerizationofapolymere.g.C3N4.Withrespecttoit,onesuccessfulexampleofpurewatersplittinginasuspensionssolutionundervisiblelighthasbeendemonstratedforthefirsttime.2,3Theotherstrategyistonarrowthebandgapofcarbonnitridesbybandgapengineering.Thematerialpreparedviaanoxygenrichorganicprecursorhasadarkcolor,resultingintoanefficientH2productionfromwaterbyUVandvisible,evenIRlightwithaquantumyield(QY)of10%at420nm,whichisthefirstexampleofapolymerphotocatalystworkinginsuchlongwavelengthforH2fuelproduction.4Thechargedynamicsinthesepolymerphotocatalystswerealsosystematicallyinvestigated,5resultingintoaphotoanodecomposedthislowcostpolymerforsolartoH2fuelsynthesis.6Inparallel,newpolymersforwateroxidation,whichisharderandmorechallengingthanhalfH2productionreaction,hasbeendiscovered,leadingtoacovalenttriazineframeworkpolymerwithefficientactivityforoxygenproductionfromwaterapartfromH2production.7References1.Y.Wang,H.Suzuki,J.Xie,O.Tomita,D.J.Martin,M.Higashi,D.Kong,R.Abe,J.Tang,Chem.Rev.,2018,DOI:10.1021/acs.chemrev.7b002862.D.J.Martin,P.J.T.Reardon,S.J.AMoniz,J.Tang.J.Am.Chem.Soc.,2014,136,12568-12571.3.D.J.Martin,K.Qiu,S.A.Shevlin,A.D.Handoko,X.Chen,Z.Guo,andJ.Tang.AngewandteChemieInternationalEdition2014,53,9240-9245.4.Y.Wang,M.K.Bayazit,S.JMoniz,Q.Ruan,C.Lau,N.Martsinovich,J.Tang,EnergyEnvironSci,2017,10,1643-1651.5.R.Godin,Y.Wang,M.A.Zwijnenburg,J.Tang,J.R.Durrant,J.Am.Chem.Soc.2017,139(14),5216–52246.Q.,Ruan,W.Luo,,J.Xie,,Y.Wang,,X.Liu,,Z.Bai,,CJ.Carmalt,J.Tang,AngewandteChemieInternationalEdition,2017,28,8221-8225.7.J.Xie,S.AShevlin,Q.Ruan,S.Moniz,Y.Liu,X.Liu,Y.Li,C.C.Lau,Z.X.Guo,J.Tang,EnergyEnvironSci,2018,DOI:10.1039/C7EE02981KBiosketch：　　Prof.JunwangTangisaProfessorofChemistryandMaterialsEngineeringintheDepartmentatUCL,DirectoroftheUniversityMaterialsHubandaFellowoftheRSC.HereceivedhisPhDinPhysicalChemistryin2001.HisresearchinterestsencompasssolarH2synthesisfromwater,CO2captureandconversion,photocatalyticmethaneconversionandammoniasynthesisaswellasfunctionalmaterialssynthesisbyamicrowaveintensifiedfluidicsystem.Suchstudiesareundertakeninparallelwiththemechanisticunderstandinganddeviceoptimisationtoaddresstherenewableenergysupplyandenvironmentalpurification.Hisresearchhasledto>120paperswith>8000citations,11patentsandmanyinvitedlectures.HeistheEditor-in-ChiefoftheJournalofAdvancedChemicalEngineering,anAssociateEditorofAsia-PacificJournalofChemicalEngineering,theguestEditor-in-ChiefoftheInternationalJournalofPhotoenergyandAssociateEditorofChinJ.Catalysisapartfromsittingontheeditorialboardofotherinternationaljournals.

关于“合肥大师论坛”之诺贝尔化学奖得主阿里耶·瓦舍尔教授学术报告会的通知　　应学校邀请，美国南加州大学教授、美国国家科学院院士、英国皇家化学学会荣誉会士、诺贝尔化学奖得主阿里耶·瓦舍尔教授将于7月4日来校作《用计算机模拟来研究健康问题的分子基础》学术报告。　　报告时间：7月4日16:00　　报告地点：东区师生活动中心五楼国际会议厅　　欢迎全校感兴趣的师生参加，请提前十分钟入场。　　国际合作与交流部　　2018年6月29日

Abstract：Multi-scalemodelingisanambitiousprogramthataimsatunifyingthedifferentphysicalmodelsatdifferentscalesforthepracticalpurposeofdevelopingaccuratemodelsandsimulationprotocalsforpropertiesofinterest.Althoughtheconceptofmulti-scalemodelingisverypowerfulandveryappealing,practicalsuccessonreallychallengingproblemshasbeenlimited.Onekeydifficultyhasbeenourlimitedabilitytorepresentcomplexmodelsandcomplexfunctions.Inrecentyears,machinelearninghasemergedasapromisingtooltoovercomethedifficultyofrepresentingcomplexfunctionsandcomplexmodels.Inthistalk,wewillreviewsomeofthesuccessesinapplyingmachinelearningtomulti-scalemodeling.Wewillalsodiscussthechallengings,boththeoreticalandpracticalthatwestillface.Biosketch：WeinanEisaprofessorintheDepartmentofMathematicsandPrograminAppliedandComputationalMathematicsatPrincetonUniversity.HeisalsothedirectoroftheCenterforDataHewaselectedasamemberoftheChineseAcademyofSciencesin2011.HebecameaninauguralfellowoftheSocietyofIndustrialandAppliedMathematicsin2009andaninauguralfellowofAmericanMathematicalSocietyin2012.HewasalsoelectedamemberoftheInstituteofPhysicsin2005.

Abstract:Theunderstandingoflow-temperaturereactivityrequiresanaccuratedescriptionoftheunderlyingpotentialenergysurfaceandthecorrespondingdynamics.Atlowtemperatures,quantumeffectssuchaszero-pointenergy,tunneling,andresonancesbecomesparticularlyimportant.Inaddition,manysuchreactionsarenotstatistical,andasaresultdynamicalcorrectionsareimportant.Forthesereasons,accuratetheoreticalpredictionoflow-temperatureratecoefficientsfromthefirstprinciplesisratherchallenging.Inthistalk,wedescribeourrecenteffortsindevelopinghighlyaccurateabinitiobasedpotentialenergysurfacesforbarrierlesscomplex-formingsystemsandincomputinglow-temperatureratecoefficientsandproductbranchingratiosforion-moleculeandneutral-neutralreactions.Biosketch：Prof.HuaGuoreceivedhisMasterdegreefromSichuanUniversityin1985andfinishedPhDprogramatUniversityofSussexin1988.AfterworkingwithProf.G.SchatzasaPostdoctoralFellowfrom1988-1990,hebecameanAssistantProfessoratUniversityofToledofrom1990-1995,andpromotedtoAssociateProfessorsince1995.In1998,hemovetoUniversityofNewMexicobecameafullProfessorin2001.HewashonoredasDistinguishedProfessor(since2015)andelectedtoAmericanPhysicalSociety(APS)Fellow(2013).Since2016,HebecameaSeniorEditorofJ.Phys.Chem.A/B/C.Prof.Guohaspublished~450paperswithover13000citationsandanH-indexof57.Hisinterestsfocuson(1)Theoreticalandcomputationalstudiesofelectronicandvibrationalspectra;(2)Reactiondynamicsofpolyatomicmolecularsystems;(3)Mechanismsanddynamicsofsurfacereactionstoheterogeneouscatalysis.

报告介绍:Quantumcomputerswillonedayrevolutionizeourtechnologiesandlivesbutrequirecontrolofmanyquantumbits(qubits),whichisstillbeyondthereachofcurrenttechnology.Hereweshowthateventhecontrolofonesinglequbitcanalreadyfacilitateusefulquantumtechnologies.Thecontrolandmeasurementofasinglequbitassociatedwiththenitrogen-vacancycenterindiamondhasbeenexploitedforultrasensitivemagnetometryandsingle-moleculenuclearmagneticresonance(NMR),recentlyhertz-resolutionsingle-spinNMRachieved.Wealsofindthatdecoherenceofaqubitisfundamentallyconnectedtothethermodynamicsoftheenvironmentinthecomplexplaneofphysicalparameters.Basedonthatfinding,weobservedtheLee-Yangzeros,whichwasstudiedintheoriesbyT.D.LeeandC.N.Yangin1952butneverobservedinexperimentsbefore.Anewtypeofphasetransitions,whichoccurinthetimedomain,isassociatedwithsingularityofthermodynamicfunctionsinthecomplexplane.Abitofquantuminformationhasalreadyalotofapplications.Thatmaybejustthetipofaniceberg.Biosketch：Prof.RenbaoLiugothisBScdegreein1995fromNanjingUniversity,DepartmentofPhysicsandPhDdegreein2000fromInstituteofSemiconductors,ChineseAcademyofScience.AfterpostdoctoralresearchesinCenterforAdvancedStudy,TsinghuaUniversityandinDepartmentofPhysics,UniversityofCalifornia–SanDiego,hejoinedTheChineseUniversityofHongKong(CUHK)in2005asafacultymemberofDepartmentofPhysics,wherehasbeenafullprofessorsince2014.Hisresearchinterestsincludecondensedmatterphysics,quantumoptics,nonlinearoptics,quantumcomputing,andquantumsensing.Hewasawarded,amongotherhonors,CUHKYoungResearcherAward(2010),DistinguishedFellowofFacultyofScience,CUHK(2013),HuangKunPrize(2013),andCUHKResearchExcellenceAward(2014).

报告摘要：海洋微生物、动植物在海洋设施表面的粘附、生长形成海洋生物污损，它对海洋工业和海洋活动有深刻的影响。海洋污损会增加舰船的航行阻力，削弱海军的战斗力；增加舰船重量，从而增加能耗和二氧化碳的排放量。海洋污损会堵塞核电站的输水管路，从而降低其冷热交换效率，甚至引发核事故；它还会阻碍潮汐发电、抽海水蓄能电站中发电机的运转。海洋污损会缩小海水养殖网箱的网孔，导致鱼虾的大面积死亡。总之，海洋防污是一个与能源、环境、国防等国家重大战略需求相关的课题，但也是一个国际性的难题。本报告将介绍海洋防污材料的历史、现状和最新进展，特别是报告人有关“动态表面海洋防污”的策略和生物降解高分子基海洋防污材料。报告人简介：张广照，教育部“长江学者”特聘教授，国家杰出青年基金获得者，科技部重大研究计划项目首席科学家。本科毕业于四川大学(1987)，复旦大学博士(1998)，香港中文大学(1999-2001)和美国麻省大学(2001-2002)博士后。2002年任中国科学技术大学化学物理系、合肥微尺度国家实验室（筹）教授。2010年任华南理工大学高分子材料科学与工程系教授。目前担任国际海洋材料保护研究常设委员会(COIPM)委员,中国材料研究学会高分子材料与工程分会副主任,广东省化学会高分子化学专业委员会主任。先后任Macromolecules(2012-2014),ACSMacroLetters(2012-2014),MacromolecularChemistryandPhysics,ChineseJouralofPolymerScience,《高分子材料科学与工程》编委。主要从事高分子物理化学(溶液与界面)方面的工作，包括大分子构象行为与相互作用的基础研究，以及海洋防污材料、岩土工程材料的应用研究。

Abstract：Ahugerecentprogressinthesamplequalitymakesmany-bodyeffectsinelectronspectrumofgraphenenearneutralitypointobservable.ModelapproachesfortheDiracelectronswithCoulombinteractionwereintensivelydevelopedinthelasttenyears.Iamgoingtofocus,rather,onmaterials-scienceaspectsoftheproblem,includingfirst-principlescalculationsofeffectiveCoulombinteractionanditsfurthermappingontheoptimalHubbardmodel;Iwilldiscussalsoaproblemofsp-electronmagnetismingrapheneandothergraphiticsystems.IwillpresentalsotheresultsofQuantumMonteCarlosimulationsforpristineanddefectedgraphene.Theydemonstrateacrucialimportanceofrealisticinterelectroninteractionpotentialforthephasediagramofisolatedgrapheneandgivethefinalanswerinalongandcontroversialdiscussiononmany-bodyrenormalizationofopticalconductivityingraphene.Itturnsoutthatthisrenormalizationisveryweakorabsent.Asanexampleofunusualmany-bodyeffectsingrapheneIwilldiscussalsotherenormalizationofballisticminimalconductivitybytheelectron-electronCoulombinteraction.Biosketch：　　MikhailKatsnelsonfinishedUralStateUniversity(Sverdlovsk,USSR–nowEkaterinburg)in1977andreceivedPhDin1980;formanyyears(1977-2001)hewasworkingintheInstituteofMetalPhysicsinEkaterinburg(thelastposition–headofthegroupofQuantumTheoryofMetals).Hebecametheyoungestphysicist-DoctorofSciencesintheUSSR(1985)andreceivedLeninKomsomolPrize(StatePrizeforyoungresearchers,1988).AfterworkingforseveralyearsasavisitingprofessorinUppsalaUniversity(Sweden)hebecame(in2004)professoroftheoreticalphysicsandheadofthegroupofTheoryofCondensedMatterinRadboudUniversity(Nijmegen,Netherlands).Heisoneofthemostactiveandmostrecognizedtheoreticalphysicistsnow,withmorethan80,000citationsaccordingtoGoogleScholar(h=98).Prof.Katsnelsonworksinmanyfieldsofphysics,fromfoundationsofquantummechanicstoapplicationsofstatisticalphysicsinbiology.Hisbestknownachievementsareinthetheoryofgraphene,magnetismandstronglycorrelatedsystems.HeisawardedbySpinozaPrize(topscientificawardinNetherlands),HamburgPrizeinTheoreticalPhysicsandbyRoyaldecorationasaKnightoftheOrderoftheNetherlandsLion.Prof.KatsnelsoniselectedmemberofRoyalNetherlandsAcademyofArtsandSciences,AcademiaEuropaeaandRoyalSocietyofSciencesatUppsalaandhonorarydoctorofUppsalaUniversity.

报告摘要:关于测量的科学至关重要。测量的精度决定了我们对自然的认知程度和相关自然规律的准确度。基于单个物理体系多次测量或它的多份(系综)测量，其精度受限于经典极限。利用量子纠缠的系综可以压制噪声超越经典极限。本报告将介绍我们最近利用量子相变制备纠缠的原子玻色-爱因斯坦凝聚体并开展量子测量的研究结果和进展。“Deterministicentanglementgenerationfromdrivingthroughquantumphasetransitions,”Science355,620(2017).“Beatingtheclassicalprecisionlimitwithspin-1Dickestateofmorethan10000atoms,”arXiv:1802.10288.报告人简介:南京大学物理学学士(1983-1987)，CUSPEA(1987)克罗拉多大学JILA物理学博士(1988-1993)哈佛-史密森天体物理中心，理论原分所博士后(1993-1996)美国佐治亚理工助理教授、副教授、教授(1996-2010)美国ONRYIPAward(1997-2000)美国NSFCareerAward(1997-2002)中科院理论物理研究所-NSFC海外杰青(2002-2005)清华高等研究中心教育部第六届长江学者讲座教授(2005-2009)Fellow,AmericanPhysicalSociety(2007-)清华大学物理系教授(2009/12-)中组部第五批千人计划(2010-),国家特聘专家(2011-)科技部重大研究计划“冷原子与偶极量子气体的性质与调控”首席（2013-17）清华-北大-物理所2011协同创新介观光学与冷原子平台主任（2013-）基金委“精密测量物理”重大研究计划专家组副组长（2013-）2013年美国引力研究基金会论文一等奖（GRAVITYRESEARCHFOUNDATION）2017年科技部中国科学十大进展：“利用量子相变确定性制备出多粒子纠缠态”