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1、PaperforANTEC2002AnnualTechnicalConferenceMay05-09,2002,SanFrancisco,CASESSIONT49:JoiningofPlasticsandCompositesIRandLaserSession2(TuesdayAfternoon,May7)LASERASSEMBLYTECHNOLOGYFORPLANARMICROFLUIDICDEVICESJie-WeiChen,LeisterProcessTechnologies,RiedstrasseCH-6060,Switzerlandapp
2、roachofsuchamicrofluidicdeviceinvolvestwopri-andJerryZybko,LeisterTechnologies,LLC,Schaumburg,IL60173/U.S.A.marysteps:(1)formationofmicro-channelsinaplasticbasewaferorlayer,and(2)bondingofthebaselayerwithAbstractacoversheettoformclosedchannels.Thereareseveraljoiningprocedures
3、forplasticpartsincludinggluecuredbyTheassemblyofplasticmicrofluidicdevices,requiringhighheatorUVlight,ultrasonicweldingandhotgaswelding.positioningandweldingaccuracyinthemicrometerrange,However,mostofthesemethodscannot,orcanonlywithwassuccessfullyachievedusinganewtechnologyba
4、sedgreatdifficulty,beadaptedtomicrostructuredplasticpartsonlasertransmissionweldingcombinedwiththemaskduetothedispensingproblems,theuseofadditionalmate-technique.Thispaperreviewsalaserassemblysystemforrialwithdifferentchemicalandsurfaceproperties,andthethejoiningofmicrofluidi
5、cplasticpartswithitsmainrelatedlowerprecisionofenergydeposition.processcharacteristicsanditspotentialforlow-costandhighvolumemanufacturing.Thesystemconsistsofaofdi-Thegoalofthisresearchwastodevelopanassemblytech-odelaserwithamaskandautomatedalignmentfunctiontonologyformicrost
6、ructuredpartsmadefromplasticswithgeneratemicroweldingseamswithfreelydefinablegeome-thegoalofproducingsingle-usefluidicdevicesatantry.Afullyautomatedmaskalignmentsystemwitharesolu-acceptablecostlevel.Theassemblyprocessandthere-tionof2mmandaprecise,non-contactenergyinputallowsl
7、atedequipmentpresentedarebasedonthelaserthroughafastweldingofmicrostructuredplasticpartswithhighre-transmissionwelding(TTIr)principle.Thisreportdescribesproducibilityandexcellentweldingquality.adevicefabricationprocessandpackagingresults.BackgroundMaskassistedlasertransmissio
8、nweldingTheresearchanddevelopmentofmicrofluidicdevice,so-Laserweldin
