[2009] Adv. Mat. - Carbon Nanotubes and Nanofluidic Transport

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1、www.advmat.deCarbonNanotubesandNanofluidicTransportByJasonKnowlesHolt*wasnotuniquetoCNTs,however,withRecentstrideshavebeenmadeinboththemodelingandmeasurementofsimilareffectsseeninzeolitematerialsandPROGRESSREPORTbiologicalsystemssuchasionchannelsandfluidflowonthenanoscale.Carbonnanotubes

2、,withtheiratomicdimensions[3][4]aquaporins.Alaterstudybythisgroupandatomicsmoothness,areidealmaterialsforstudyingsuchflows.ThisinvestigatedthetransportofwaterthroughProgressReportdescribesrecentmodelingandexperimentaladvancesamodel0.8nmdiametersinglewallCNTconcerningfluidtransportincarb

3、onnanotubes.Thevariedflowcharacter-(SWCNT)membraneundertheinfluenceisticspredictedbymoleculardynamicsaredescribed,asaretherolesofofanosmoticgradient.Significantly,theyfoundthattransportrateswereextremelydefectsandchiralityontransport.Analyticalmodelsareincreasinglybeingfastduetomolecular

4、orderingwithintheseusedtodescribenanofluidictransportbyrelaxingmanyoftheassumptionschannels,andwereonparwiththosecommonlyusedtodescribebulkwater.Recentexperimentalstudiesexaminethroughaquaporinbiologicalchannels.thesizedependenceofflowenhancementsthroughcarbonnanotubesandTheresultsrevea

5、ledastarkcontrasttousevariedspectroscopiestoprobewaterstructureanddynamicsinthesemacroscopicflowcharacteristics,withchan-systems.Carbonnanotubesarefindingincreasingapplicationsinbiology,nellength-independentflowandtransportratesmuchfasterthanwhatclassicalfromproteinfilterstoplatformsforce

6、llinterrogation.hydrodynamicswouldpredictifextrapo-latedtothenanometerlengthscale.Thesemodelingstudiesweretheimpetusforresearchersto1.IntroductioninvestigateCNTfluidstructureandtransportexperimentallyanddeterminewhetherthesepredictionswerereal.OneofthefirstCarbonnanotubes(CNTs),theproto

7、typicalone-dimensionalexperimentalstudiesprobingwaterstructureinthesesystems[5]nanomaterial,havelongbeentoutedfortheirexceptionalwasbyKolesnikovetal.Usingneutronscatteringmethods,theyelectrical,thermal,andmechanicalproperties.Amorerecentprobedthestructureofwaterinside1.4nmdiameterSWCN

8、Ts.Ad