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1、pubs.acs.org/Langmuir?2010AmericanChemicalSocietyLow-TemperatureLarge-ScaleSynthesisandElectricalTesting?ofUltralongCopperNanowiresMelindaMohl,PeterPusztai,AkosKukovecz,andZoltanKonya*DepartmentofAppliedandEnvironmentalChemistry,UniversityofSzeged,RerrichB.ter1.,6720Szeged,HungaryJ
2、armoKukkolaandKrisztianKordasMicroelectronicsandMaterialsPhysicsLaboratories,UniversityofOulu,PL4500FIN-90014Oulu,FinlandRobertVajtaiandPulickelM.AjayanDepartmentofMechanicalEngineeringandMaterialsScience,RiceUniversity,Houston,Texas77251ReceivedApril7,2010.RevisedManuscriptReceived
3、May21,2010Coppernanowires(NWs)withuniformdiametersandlengthsrangingfromseveralhundredsofnanometerstoseveralmicrometershavebeenpreparedwithhighyieldbyasimplehydrothermalprocedure.TheX-raydiffraction(XRD)andenergydispersiveX-rayspectroscopy(EDS)analysisdataindicatethatthecoppernanowir
4、esarefreeofanycontamination,whiletheelectrondiffraction(ED)analysishasrevealedthenanowirestobesinglecrystals.Thenanowiregrowthmechanismhasalsobeendiscussed.Hexadecylamineisthesurfacestabilizingagentinourmethod,whileglucosefacilitatesformationofsingle-crystallineseedsonwhichthecopper
5、nanowiresgrow.Theelectricalpropertiesoftheas-synthesizedcopperNWshavealsobeeninvestigated.7Introductionvapordeposition,etc.),thecontrollednanowiresynthesisisgene-rallyperformedbygrowingcrystalsinthepresenceofphysicalCopperisprobablythemostfrequentlyusedmetallicnano-templatesorcappin
6、gagentsselectivelyadheringtocrystallinewire.Lately,one-dimensional(1D)nanocopperreceivedout-facetssuchassurfactantsand/ororganicpolymers.Applicationsstandingattentionbecauseofitshighelectricalconductance.requirethenanowirestohaveuniformsizedistributionandtobeThispropertymakesitespec
7、iallysoughtafterbythemicroelec-1freeofdefects.Therefore,afacilesynthesisapproachcapableoftronicsindustry.Beingusedinabroadrangeofapplicationsproducinglargequantitiesofnanowireswithtunableaspectratiostartingfromelectriccircuitstoelectricpowerleads,1Dnano-1isingreatdemand.copperoffers
8、trulyuniqueelectric