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.

关于“合肥大师论坛”之美国三院院士JohnA.Rogers教授学术报告会的通知　　应学校邀请，美国国家科学院、美国国家工程院、美国艺术与科学学院三院院士JohnA.Rogers教授将于7月18日来校作《SoftElectronicandMicrofluidicSystemsfortheSkin》学术报告。　　报告时间：7月18日上午10:00　　报告地点：东区环境资源楼学术报告厅　　国际合作与交流部　　2018年7月11日

Abstract：Atfirst,Iwillintrocducethebasictheoryabouthyperbolicspaceandhyperbolicmanifolds.ThenIwilldisscusstheaymptoticPlateauproblem(inhyperbolic3-space),theminimalsurfacesinquasi-Fuchsian3-manifolds,theminimalsurfacesinhyperbolic3-manifoldswithfinitevolume,andthereltationbetweentheshortgeodesicsandthenumberof(incompressible)minimalsurfacesinhyperbolic3-manifolds.

摘要：Ricci(里奇)流是RichardHamilton在上世纪八十年代初引入的理论。Hamilton的奠基性工作包括短时间存在性，极大值原理估计的理论，正Ricci曲率紧致三维流形上的Ricci流和正曲率算子四维流形上的Ricci流，以及Ricci流上的Harnack不等式。G.Perelman进一步发展了Ricci流的理论，引入了一系列工具，并使用Ricci流证明了三维拓扑的Poincaré（彭加勒）猜想。他因此获得了菲尔茨奖和Clay数学大奖。此后，Ricci流理论有了新发展，例如B?hme-Wilking用Ricci流证明了关于正曲率算子流形的猜想，Brendle-Schoen用Ricci流证明了微分球面猜想。Ricci流的一般性收敛理论以及弱解理论也有很大进展。在复几何方面，K?hler-Ricci流理论也有重大进展和应用。例如，Yau-Tian-Donaldson猜想获得解决。与Ricci流密切相关的一个几何发展方程是Yamabe流。Ricci流也有sigma模型理论重整化流的物理背景。报告人简介：叶如钢教授1981年12月毕业于中国科学技术大学数学系，1987年在德国波恩大学获得数理博士学位，1987-1990年在斯坦福大学任助理教授，1995-1998年在德国波鸿大学任终身教授（历史上在德国第一个被聘为终身教授的华人）。现在在加州大学圣巴巴拉分校任教授，并在中国科学技术大学任长江客座教授。叶如钢教授的主要研究方向为微分几何、几何分析和数学物理等。

Abstract:Multidentatephosphinesandphenoxidesconnectedbyarenelinkershavebeenemployedtosupportmonoandmultimetalliccomplexes.Thearenelinkeractsasalabileligandandcoordinatesinavarietyofmodesasafunctionofmetalandoxidationstate.Theeffectofliganddesignonreactivitywillbediscussed.BriefCVOriginallyfromBucharest,Romania,AgapiereceivedhisB.S.degreefromMassachusettsInstituteofTechnologyin2001andhisPh.D.fromCaliforniaInstituteofTechnologyin2007.HewasaMillerPostdoctoralFellowatUniversityofCalifornia,Berkeley.AgapiereturnedtoCaltechin2009tostarthisindependentcareerasAssistantProfessorofChemistry.HehasbeenProfessorofChemistrysince2014.Hisresearchfocusesonsyntheticinorganicandorganometallicchemistryontopicsrelatedtoenergyconversion,catalysis,andupgradingreadilyavailablechemicalprecursors.SelectedawardsincludetheSloanFellowship(2012),NSFCAREERAward(2012),ACSAwardinPureChemistry(2013),PresidentialEarlyCareerAwardforScientistsandEngineers(PECASE,2014),andDreyfusTeacher-ScholarAward(2014).

Abstract：ThisisanintroductorylectureoncombinatorialRicci/Calabi/Yamabeflowsandthecharacterizationsonconvex(ideal)polyhedronsinhyperbolic3-space.WewillbeginwithThurston’scirclepatterntheoremandendwithacombinatorialRicciflowproofofRivin’scharacterizationsaboutidealconvexhyperbolicpolyhedrons(Ann.ofMath.1996).Thecoursewillcoverthefollowingtopics:1)ThedefinitionofcombinatorialRicci/Calabi/Yamabeflows.2)Therigidityof(finiteorinfinite)circlepatterns.3)Basichyperbolicgeometry.4)Therigidityofhyperbolic(ideal)convexpolyhedrons.5)Theexistenceofhyperbolic(ideal)convexpolyhedrons.

Abstract:Thermoelectricconversiontechnologyattractsmuchinterestrecentlyduetothedemandontheefficientuseofwasteheatandthepowersupplyforsmallsensors.Thermocell,whichisalsocalledasathermo-electrochemicalcellorthermo-galvaniccell,isanemergingcandidateforthethermoelectricgenerator.Thermocellgenerateselectricpowerbythechangeofequilibriumpotentialofaredoxpairbythetemperaturedifference.Thermocellconsistsofasolutionofaredoxpairandtemperaturegradient.Theredoxpairconstructsanequilibriumpotential,andthepotentialdependsonthetemperature.Thestate-of-the-arttechnologyofthermocellreachesZTvaluetoO.16withCNTelectrodeand[Fe(CN)g]3-l4-.HerewereportthesupramoleculartechnologyforimprovingSeebeckcoefficientofthethermocell.ThisresultprovidesatechnologyforimprovingSeebeckcoefficientaswellasZTofthermocells.Bio:TeppeiYamadaobtainedhisBS.andM.S.degreeatTheUniversityofTokyoin2001and2003respectivelyIn2010,hereceivedhisPh.DdegreeinKyushuUniversity.From2003to2004,hewasemployedinMitsubishiChemicalCo.L.td,whereheworkedonElectrolyteofLithiumlonBattery".In2005,hecametoKyushuUniversity,workingon"Protonconductivityofmetal--organicframeworks.From2010,hejoinedtheDivisionofChemistryofKyotoUniversityasanAssistantProfessor.Since2012.hebecameanAssociateProfessorintheDivisionofAppliedChemistryandBiochemistryofKyushuUniversityresearchingin"Softionics.

摘要:In1996,Bergelsonaskedthefollowingquestion:foranymixingmeasurepreservingsystem$(X,mu,T)$,isthereaset$A$(calledanover-independenceset)suchthat$mu(AcapT^{-n}A)>mu(A)^{2}$forall$n>0$,andisthereaset$A$(calledanunder-independenceset)suchthat$mu(AcapT^{-n}A)0$?Afterstayingdormantforabout20years,thissubjectcametolifeinrecentworksofBoshernitzan-Frantizikinakis-WierdlandAdams.Inthistalk,Iwillintroducerecentadvancesonthissubject,andextendthenotionsofover-andunder-independenceforweaklymixingand(free)ergodicmeasurepreservingactions.ThisisjointworkwithTerryAdamsandVitalyBergelson.

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.

詹林盛，博士，研究员，博士生导师。现任军事科学院军事医学研究院野战输血新技术研究室主任，北京市科技新星，获AMMS优秀人才奖等。兼任中国输血协会输血医学科研工作委员会主任委员，中国输血杂志编委等。主要从事战时血液安全、输血免疫及细胞治疗等方面的研究。作为项目首席和负责人承担军队重大、重点项目2项；参加国家、军队重大、重点课题10多项；作为课题组长带领课题组成员先后承担国家自然科学基金课题22项，北京市自然科学基金课题5项。发表研究论文100多篇，其中以通讯作者发表SCI论文24篇，授权国家发明专利5项。目前主要从事基于小动物分子影像的细胞治疗和输血医学研究，在小动物光学成像研究方面取得一定的进展，形成了局部的特色和优势。主要开展以下方面研究：（1）感染与免疫分子成像研究：基于分子影像技术，针对病原微生物、机体炎症信号分子、天然免疫信号分子等，以荧光素酶和新型发光纳米材料为探针，建立病原体、炎症信号分子、天然免疫信号分子在模型动物体内表达调控及实时监测的新方法，开展病原与宿主相互作用的可视化研究。（2）细胞免疫治疗的分子成像研究：建立细胞治疗多模式体内示踪成像技术，开展细胞免疫治疗临床前研究；重点开展过继性免疫细胞治疗体内细胞迁移、定位及疗效评价研究；设计了多种新型的功能化纳米促进剂，基于活体小动物分子影像平台筛选高效递呈抗原至DCs的方案，为血液病、肿瘤、感染等疾病细胞治疗临床前评价提供基础资料。（3）干细胞体内示踪成像研究：主要开展新移植模式下的造血干细胞植入及GVHD发生发展并探讨相关机制研究，以及通过多模式分子成像监测成分血液输注对干细胞体内迁移归巢模式的影响，阐明移植干细胞和免疫细胞在体迁移、穿膜的分子机制。