Outlook for researchUltrasonicprobesarekeydevicestomonitorcracksinagedbuilding.Butthoseforoperatingpowerplantsandfactoriesathightemperature(T>350)arestilllacking.Wewilldevisedenseandhighly-orientedarraysofpiezoelectricnanowiresornanosheetsforself-poweredhightemperatureultrasonicprobes,whichwouldbeabuildingblockofIoTsensornetworks.Outlook for students after graduationStudentsinourgroupwilllearnhowtoplanresearchprojects,fabricateandcharacterizesamples,andanalyzeandsummarizethedatasetsforacademicpublications.Theseexperienceswouldbebasicskillsintheirfuture,asresearchersorengineersincompaniesorelse.Outlook for researchByreducingthesizeofvarioussystems,wecandothingsthatcouldnotbedoneatthemacroscopicscale.Forexample,acoolingrateof10,000degreespersecondhasbeenachievedbyreducingthedropletsizetoaverysmallamount.Inthisway,wewillcontinuetomeettheworld'schallengesbydevelopingnewtechnologiesmicroscopicscale.thattakeadvantageoftheOutlook for students after graduationGraduatesareemployedbyawiderangeofincludingprecisioninstrumentcompanies,instrumentmanufacturers,manufacturers,relatedmanufacturers,andothers.AssociateProfessorWATANABEKentaroProfessorAKIYAMAYoshitakeDepartment of Machinery and RoboticsFunctional Machineryand MechanicsDepartment of Machinery and RoboticsBioengineeringAftercompletingagraduateprogramatTokyoUniversityofAgricultureandTechnology,ProfessorAkiyamaworkedatJEOLLtd.,atTokyoUniversityofAgricultureandTechnologyasaspeciallyappointedassistantprofessor,andatOsakaUniversityasaseniorassistantprofessor,hiscurrentpositionin2021.specializationincludeHisfieldsofmicromachining,biotechnology,regenerativemedicine,theandintegrationofthesame.ProfessorWatanabeAssociatereceivedhisPh.DfromtheUniv.ofTokyoin2010.HejoinedShinshuUniv.onMarch2020underJSPSLEADERprogram.Hisresearchinterestcoversscienceandengineeringofelectrical,mechanical,andthermalpropertiesofsemiconductornanocristals.SEM-Cathodoluminescence nanospectroscopewith an in-situ nanoproberfor strain-induced electrical & mechanical testing.ZnOnanowireunderbendingstressapplied,exhibitingelasticuniaxialstrainupto4%(100timesgreaterthanbulkZnO).Inkjet-based super flash freezing of cells. (a) Schematic diagram of the apparatus. (b) Droplet ejection captured by a high-speed camera. (c) Frozen droplets deposited on a grid pattern.Recovery of microplastics using ultrasonics. (a) Schematic diagram of the device. (b) Magnified view of the trifurcated branches. (c) High enrichment using four serial separations.Watanabegroupfocusesondenseandhighly-orientedarraysofsemiconductornanocrystals,suchas1D-likeZnOfree-standingnanowirearraysand2D-likeMoS2-basedhetero-nanostructures,asmacroscopicmaterialsexhibitinguniquenanoscaleproperties.Weaimtodevisethemaspotentialmaterialsofnovelsensordevicesandportablepowergenerators,askeycomponentsofsensornetworks.Wealsoenabledin-situelectrical/optoelectronictestingofindividualnanostructuresundernano-mechanicalloadingbasedonSEM-Cathodoluminescence(CL)nanospectroscope,whichrevealsnanoscalepropertiesandtheirpotentialapplications.Ourlaboratoryfocusesonphenomenaandcharacteristicsatthemicroscopicscaleandaimstoapplythemtomedicalandmicrofabricationenvironmentaltechnologies.Wesucceededintheworld'sfirstcryoprotectant-freecryopreservationofanimalcellsusinginkjettechnology.Wearealsoworkingonultrasonicrecoveryofmicroplastics(tinypiecesofplasticsintheenvironment),constructionofsmall3Dtissuesbydiamagneticcellmanipulation,andbio-hybriddevicesactuatedbytissue-engineeredmuscle.medicalautomobileandengineeringthrough℃18Devising dense and highly-oriented arrays of semiconductor nanocrystalsNew technologies through miniaturization, from cell cryopreservation to microplastic recovery
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