简介：Confinementcaninduceunusualbehaviorsofwater.Inspiredbythefabricationofcarbonnanotubeswithnoneircularcrosssections,weperformedmoleculardynamicssimulationstoinvestigatethemo-bilitiesofwaterconfinedincarbonnanochannelswithcircular,square,andequilateraltriangularcrosssectionsoveravarietyofdimensions.Wefindthatwaterexhibitsdisparatemobilitiesacrossdifferenttypesofchannelsbelow0.796nm^2.Notably,comparedwiththeothertwochannels,waterinequi-lateraltriangularchannelsdisplaysthegreatestmobilities.Moreover,at0.425nm^2,differentorderedstructuresarefoundinthethreechannels,andwaterinsidethesquarechannelexhibitsanextremelylowInobility.Itisalsofoundthatabove0.796nm^2,themobilitiesalongthetubeaxisofwatercon-vergetothatofthebulk.Thesephenomenaareunderstoodbyanalyzingthestructure,dynamics,andhydrogenbondingofwater.Ourworkexploresthemobilitiesofwateracrossnoncireularcarbonnanoehannels,whichmayexpandtheprospectofnoneireularnanochannelsinscientificstudiesandpracticalapplications,suchasdesalinationanddrugdelivery.