简介：Apreliminaryinvestigationonshort-wavelengthablationmechanismsofpoly(methylmethacrylate)(PMMA)andpoly(1,4-phenyleneetherether-sulfone)(PPEES)byextremeultraviolet(EUV)radiationat13.5nmusingatable-toplaserproducedplasmafromagas-pufftargetatLLG(Gttingen)andat46.9nmbya10HzdesktopcapillarydischargelaseroperatedattheInstituteofPhysics(Prague)ispresented.Ablationofpolymermaterialsisinitiatedbyphotoinducedpolymerchainscissions.TheablationoccursduetotheformationofvolatileproductsbytheEUVradiolysisremovedasanablationplumefromtheirradiatedmaterialintothevacuum.Ingeneral,cross-linkingofpolymermoleculescancompetewiththechaindecomposition.Bothprocessesmayinfluencetheefficiencyandqualityofmicro(nano)structuringinpolymermaterials.WavelengthisacriticalparametertobetakenintoaccountwhenanEUVablationprocessoccurs,becausedifferentwavelengthsresultindifferentenergydensitiesinthenear-surfaceregionofthepolymerexposedtonanosecondpulsesofintenseEUVradiation.

简介：<正>Fluence全长4.6米,其简洁、有组织的线条形成了概念车修长的coupe车身结构。这是用现代的手法来表达所有coupe的特色,即是运动的乐趣。运动的乐趣被倾斜的车前端以及垂直的尾端的对比表现得淋漓尽致。前端的设计非常的流线,

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