美国留学材料科学与工程专业个人陈述范文三篇.docx
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美国留学材料科学与工程专业个人陈述范文三篇.docx
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美国留学材料科学与工程专业个人陈述范文三篇
美国留学材料科学与工程专业个人陈述范文三篇
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美国留学材料科学与工程专业个人陈述范文三篇
范文一
Academicandresearchbackground
Thedesiretoknowmoreaboutthenaturehasmotivatedmetostepintothebroadworldofscience.Ihavecultivatedmygreatinterestinphysics,chemistry,biologyandalotofrelatedfieldssinceIwasveryyoung.Iwasarmedwithstrongfoundationinphysicsduetomythreeyears’timeinTianjinNankaiHighSchool,(oneofthemostfamoushighschoolsinChina).
IntheSeptemberof2000,IenteredUniversityofScienceandTechnologyofChinaandbecameamemberofphysicsdepartmentsincethen.Newenvironmentalwaysbringsunexpecteddifficulties,andgreatefforthasgivenbymetogetadapttothenewlife.Duringtheperiodofhardtrying,bothmyknowledgeandmymaturityhaveremarkablygrownandIfinallygotrankabove12%of140,withoverallGPA3.5/4.0,andmajorGPA3.8/4.0.MyhardworkingfinallyearnedmetheOutstandingStudentScholarshipin2003.
Besidesenhancementofknowledgeinphysics,Ihavealsoaccumulatedagreatdealofknowledgeinchemistryandmaterialscience.Ihavegot95/100in“TheStructureandPropertiesinSolidandSolidStateChemistry”and87/100in“SolidStateOpticsandSpectroscopy”,amongthetopscoresinclass.Moreover,Ihavemadeefforttoimprovemyabilityinmathematicsandcomputersciencecautiously.(附加的段)
Mytwoyears’researchinStructureResearchLaboratoryofUSTChasbroughtmetoamoreextensiveandpracticalfieldofphysics.ServedasanundergraduateresearchassistantinProfessorXianhuiChen’sgroup,Ihavedevotedmostofmytimetotheresearchandmyknowledgeincondensedmatterphysicsanditsrelatedfieldshavegreatlyincreased.Ihaveobtainedallthebasicexperimentalskillsinaveryshorttimeandinordertokeepwiththepaceofthelatestachievementinmyresearchfield,Ihavespentalargeamountoftimeinreadingrelatedjournals,suchasAppl.Phys.Lett.,J.Appl.Phys.,Phys.Rev.B,Phys.Rev.Lett.,J.SolidStateChem.andsoon.
Atthebeginningof2003,Ibeganmysystematicalworkinexploringthegrowingmethodandtransportpropertyinvestigationsinhole-dopedsinglecrystalBSLCO(Bi2Sr2-xLaxCuO4+y)seriesandelectron-dopedNCCO(Nd2-xCexCuO4-y)series.Myworkwasfocusedonthesinglecrystalpreparationandphysicalpropertymeasurement,especiallythetransportpropertyandmagneticproperties.Aftersomanytimesofattemptinthemeltingrangeanddescendingspeed,Isuccessfullygrewagreatdealofsinglecrystalswithhighquality.Moreover,Ihavespentsomanydaysandnightstogetherwithmycolleaguesinlabmeasuringtheresistanceofthesinglecrystalsunderzerofieldandhighfield.Duetothehighqualityofthecrystalsandourhardwork,wefinallyobtainedplentyofmeaningfuldataandbyanalyzingthenormalstateproperty,Ihavesubmittedapapertitled“Field-inducedlog(1/T)divergingresistivitydeviationfromnormalstateinsuperconductingcuprates”toPhys.Rev.Lett.in2003asthethirdauthor.However,myworkwasnotstoppedandwithfurtherinvestigationinthe2Dweaklocalizationsystem,IhavesubmittedanotherpapertoEurophys.Lett.inOctober2003asaco-author.
Besides,throughthework,Iobtainedalmostalltheskillsofmanipulationofthecorrespondinginstrumentsfromphysicalpreparationtocharacterization,suchasM.BraumGlove-Boxsystem(Germany),MORRISHighPressuresystem(Berkeley),RietveldandLebailRefinementofcrystalstructurefromXRDpattern,17TUltra-HighMagneticFieldsystem(OxfordScience),ACAssistanceBridge(LinerResearchInc.)sputteringandsoon.What’smore,Icanskillfullyusesoftware,(GSAS,FullProf,CELLPCPDFWINandetc),toanalyzethestructureofthematerialthroughX-raydiffractiondata.
Beyondtheachievementinresearch,thehappinessIgainedfromthecooperationwithothersandtheapproachofthephysicssciencewasgreater.Timesoffailuremakemebelievethatthepersistenceistheonlythingtomakepeoplegaintheirgoalsandtheresearchworkneedsactiveandcreativethinking.Ioftenhavediscussionwithothermembersinmygroupnotonlyonthecurrentencounteredproblembutalsoonthesomenewideasforresearch.Duringtheweeklygroupmeeting,weoftenexchangedourviewsonourcurrentresearchprojectandIhavelearnedalotthroughthiscommunication.
Meanwhile,Inevergiveupsearchingformoreextensiveandchallengingfield.Actually,someofmypresentworkisfrommyownidea.KnownthemisfitlayerofCoO2,Ihavegrownsomesinglecrystalsofhighlyefficientthermoelectricmaterials,suchasBi2Sr2Co2O,Bi2Sr2CoO6+y,Ca3Co4O9.......InordertofindtherelationshipbetweenthemisfitstructureofCoO2layerandthehighthermoelectricity,magneto-resistanceandmagneto-power,Ihaveinvestigatedthelow-temperaturetransport,thermalandmagneticproperties.Byreadinganumberofrelatedpapers,Iplantotakefurtherinvestigationofthesematerialsthroughtheirthermoelectricpotentialandotherrelatedmeasurements.
Withgreatinterestinnanoscience,Ihavepaidextraattentiontotheupdatetechniqueinsynthesizingthenanowiresandnanoparticles.BothfromthecorrespondingbooksinthisfieldandexperienceofthePhDstudentsinmygroup,Igraspedanumberofmethods,suchasmicro-emulsion,hydrothermalmethod,sol-gelandothersoftchemicalwaystosynthesizethenanoscalematerials.Undertheavailablecondition,IamsynthesizingthenanoscalesuperconductingmaterialYBCOandnanowiresofmagneticmaterials,suchasLa0.5Ba0.5MnO3.
MoreandmoredoIrealizetheimportanceofcollaboration,duringmyexploringofthenovelpolycrystallineCo1212andFe1212.Thesampleswerereportedbysomegrouptobesuperconductingonlyifitisannealedundertheextremepressure.Ihavemeasuredthetransportpropertyofthecrystalsandobservedsomeabnormalphasetransitionofsuperconductivity.However,becauseofthelimitationofexperimentalcondition,oursamplescannotbecomesuperconducting.Inordertosolvetheproblem,wecooperatedwithInstituteofPhysicsofChinaAcademicSciencetoobtaintheextremepressure.TwopapersofmyworkonCo1212havebeensubmittedtotheinternationaljournalslatethisyear,andIwasthesecondauthor.Inthiscase,Irealizedthecooperationwithinandwithoutagroupisequallyimportant,andsometimesaccomplishmentisgainedunderseveralgroupsofpeople.WealsohavedonesomeworkinYBCOthinfilmtransportproperty,collaboratedwithprofessorC.L.ChenofSuperconductingCenterTexas,U.S.A.
Inaddition,Ihavealsoattendedsomeofothersub-group’sresearchproject,suchasusingsol-gelmethodtogrowRu1212,NaCoO2transportpropertyinvestigationandcolossalmagnetoresistancematerialspreparation.What’smore,Ihavealsoattendedthe7thNationalSuperconductivityConferenceandNationalAnnualConferenceofPhysicsin2003.Mykenwasgreatlyenlargedbyhearingthereportoftheattendanceandmyconfidenceinmyresearchwasincreasedatthesametime.
Researchinterestandfutureplan
Materialofscienceandengineeringisconcernedwiththestudyofstructure,propertiesandapplicationsofmaterials.Duringmytwoyears’researchinStructureResearchLaboratory,Ihaveaccumulatedplentyofknowledgeintherelatedareaofmaterialscience,andmeanwhilemyabilityindoingresearchisgreatlyproved.Inthepastwork,Ihavedonequitealotinsynthesisaswellascharacterization,andIhavealsodealwithdifferentclassesofmaterials,suchaselectronic,magnetic,superconductingandsoon.Ibelieve,aimedwithstrongfoundationofphysics,theappropriateareaformetotakeresearchworkwillbemoreextensive.
Theareaofinterestisjustasfollowing:
1.Ihavereadalotofcorrespondingpapersinmagneticrecordingresearch,andIhavegreatinterestinthiskindofmaterials.Ibelieveresearchinthisareaisimportantbothforbasicstudiesoftheeffectsofdimensionalityandinteractions,andforthefutureofmagneticrecording.Hence,Iwishtodosomeworkinsynthesisandprocessingofthiskindofmaterials.
2.Becausenanomaterials,suchascarbonnanotubes,nanoparticles,quantumdots,nano-porousstructures,andnano-electronicsdevicematerials,aretheessentialpartofthecurrentandfuturenano-basedtechnologies.Ihopeverymuchtocontinuemyfutureresearchworkinthisarea.
3.Moreover,Iamalsointerestedinthestructuralmaterial,suchasadvancedengineeringmaterials,whichcharactersmaybechangedrespondingtothedifferentmechaniccondition.SoIthinkIalsohopetodotherelatedresearchinanalysisofmaterialsproperty.
MyfutureplanistopursuemyPhDdegreeinmaterialscienceandengineering.Infact,thoughthetechnologyisdevelopingatatremendousspeed,thereisstillalotofprogressremainingtobemade.Forinstance,nanoscaledevices,eitherassembledlithographicallyorchemically,willhaveahighprobabilityoffailure.Therefore,anyarchitecturebuiltfromlargenumbersofnanoscaledeviceswillnecessarilycontainalargenumberofdefects,whichfluctuateontimescalescomparabletothecomputationcycle.Furthermore,deeperinsightshouldbegivenintotheconstraintsimposedbynano-devices,especiallycarbonnanotube-baseddevices,bymodelingthedevicesandcorrespondingarchitectures.Suchaframeworkcancontributetowardsbuildingmorepowerfulnano-probes,nano-computerandefficientpowerfuel-cells.
WhyIChooseUCSD
UCSDisworldfamousforitsoutstandingfacultyandreputation.ThoughtheeconomicconditioninCaliforniaisnotsosatisfyingatthemo
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