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1、MaterialsScienceandEngineeringB147(2008)5762ShortcommunicationControlledsynthesisanddiameter-dependentopticalpropertiesofCunanowirearraysJing-LaiDuana,b,∗,JieLiua,Hui-JunYaoa,b,DanMoa,b,Ming-DongHoua,You-MeiSuna,Yan-FengChena,b,LingZhangaaInstituteofModernPhysics,ChineseAcademyofSciences,Lan
2、zhou730000,PRChinabTheGraduateUniversityofChineseAcademyofSciences,Beijing100049,PRChinaReceived17July2007;receivedinrevisedform12October2007;accepted3November2007AbstractUsingelectrochemicaldeposition,Cunanowirearrayshavebeensuccessfullyfabricatedbyhome-madepolycarbonateion-tracktemplates.T
3、hediameterswerewellcontrolledbyetchingtimeoftemplates.Theminimumdiameteris15nm.Themorphologiesandstructureswereanalyzedbyscanningelectronmicroscopy,transmissionelectronmicroscopyandX-raydiffraction.Thewiresprefer[110]growthdirectionduetoHionsabsorption.TheopticalpropertiesofCunanowirearraysa
4、restudiedbyanultraviolet/visible/near-infraredspectrophotometer.Twoextinctionpeakswereobservedinspectra.Theopticalmechanismisdiscussedbasedonsurfaceplasmonresonance.©2007ElsevierB.V.Allrightsreserved.Keywords:Electrochemicaldeposition;Cunanowirearrays;Growthorientation;Surfaceplasmonresonanc
5、e1.Introductionricatetemplatesofdifferentmaterials(polymers,SiO2andmica,amongothers)withporesofcontrolleddensity(fromsingletoHighaspectratiometalnanostructuressuchasnanorods,109pores/cm2),shapes(e.g.cylindrical,conicalorbiconical),nanotubesandnanowireshaveattractedconsiderableattentiondiamet
6、ersfromafewnmtoseveralmandaspectratios(length[15]duetotheirnovelpropertiesandpotentialapplicationsinoverdiameter)evenmorethan103.Ontheotherhand,bycon-electronics,magnetics,photonics,optoelectronicsandbiologi-trollingofdepositionparameters,nanowireswithwell-definedcalsensors.Copperisofpeculia
7、rinterestthankstoitsimportantcrystallinityandcrystallographicorientationcanbeobtainedroleintheelectronicindustrybasedonitsexcellentelectrical[35].andthermalconductivity.Inadditiontodevelopingfabricationmethods,overthepastThephysicalaswellaschemical
