简介：Wereportthedirectfabricationofamicrofluidicchipcomposedoftwohigh-aspectratiomicrofluidicchannelswithlengthsof3.5cmand8mminaglasssubstratebyfemtosecondlasermicromachining.Thefabricationmainlyconsistsoftwosteps:1)writingmicrochannelsandmicrochambersinaporousglassbyscanningatightlyfocusedlaserbeam;2)high-temperatureannealingoftheglasssampletocollapseallthenanoporesintheglass.Migrationofderivatizedaminoacidsisobservedinthemicrofluidicchannelbyapplyingelectricvoltageacrossthelong-migrationmicrochannel.
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