工学部 研究紹介_2018_英語版

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NakayaLabNakayaLabstudiesthevisualizationofgroundwaterflowusingchemicaltracers.Forexample,sulfurhexafluoride(SF6)andchlorofluorocarbons(CFCs)gases,whicharefoundinatmospherebyanthropogenicproduction,inwaterarepotentialdatingtracersofyounggroundwater(~50yr).18Oand2Hinwaterarealsopotentialtracerstodetecttheorigins,thesourceareas,andthepathsofgroundwaterflowofspringandwellwaters.Fromtheageandtheflowpathofgroundwater,wecanunderstandsubsurfaceenvironmentinwatercycle.Bymeasuringchemicaltracersingroundwater,wecanclarifywhenandwherethegroundwaterwasrechargedaswellasitsflowpathandresidencetimefromtherechargezonetoasamplingpoint.Suchhydrologicaldatacanbeusedtopreservetheenvironmentofwatersourceareaandtosetuptherulesforsustainablewateruse.SolvingwaterproblemsinAsiathroughourresearchesisimportantforthefutureearth.Shinji Nakaya, Prof. Major : HydrologyRecently, have developed dating system of ground-water.Field Research : Bangladesh, China, Nagano, Okinawa, Miyagi, Osaka, Hyogo etc.Groundwater sampling in Ryukyu-limestone area, Okinawa Island.Collaboration with Univ. of Ryukyu.Dating & Visualization of Ground Water－using chemical tracers－Arsenic polluted groundwater & soil core sampling in a village along old Brahmaputra river, Sonargagon, Bangladesh. (Collab-work)Thegraduatesfromourlabareinvolvedinthemanagementofsurfacewaterandgroundwaterasresearchers,governors,andconsultantsinlocalandinternationalsocieties.Onegraduatewhowasinvestigatinggroundwaterpollutionisemployedinalawyer’soffice.After GraduationIn the FutureNano-carbonssuchascarbonnanotubes,graphenes,andnanoporouscarbonsareconsideredtobethemostimportantmaterialsthatrevolutionizepresenttechnologyrelatedtoenergydevices,waterpurification,biologicalmaterials,andstructuralmaterials.Inourlaboratory,wefabricatenano-carbonmaterials,processthem,andusingtheminnext-genenergydevicestoimprovethecapacitysothatourlifebecomesmorecomfortable.Throughthedevelopmentofhighlycontrolledsynthesismethodforcarbonnanotubes,graphenes,andnanoporouscarbons,westrivetoprovidenovelhighcapacityenergydevicesthatwilllastmuchlongerthanwhatpresenttechnologycanfinallyachieve.YouwillbeabletogomilesawaywithanewEV,usesmartphonesandtabletsforgettingaboutcharging.TakuyaHayashiProfessorGraduated Tokyo University,Main research field in materials science especially structural and physical characterization of nanomaterials Carbon nanotubes and graphene models.New-generation Energy Devicesfrom Nano-carbonsNew generation energy devices will provide much longer life to the electric vehicles, and smart phones.Manygraduatesworkforautomotivecompanies,railwaycompanies,electriccompaniesandelectricpowercompanies.Theyaremainlydoingresearchanddevelopmentatthecompany.HayashiLabIn the FutureAfter GraduationWaterEnvironment & Civil EngineeringWaterEnvironment & Civil Engineering41