Electrical& Computer Electrical& Computer23In the FutureAfter GraduationIn the FutureAfter GraduationProfessorHis main research fields are growth of bulk crystals and evaluation of crystal-line defects. He was born in Nagano.ProfessorPh. D.From 2004 to 2005, he was visiting scholar in the School of Electrical and Information Engineering, University of Sydney. His research topics are wireless communication technology.EngineeringEngineeringofficeMorningrestaurantstationMaininterestofourlaboratoryisthegrowthandevaluationofsemiconductingandfunctionaloxidesinglecrystalssuchassilicon(Si),siliconcarbide(SiC)andbetagalliumoxide(β-Ga2O3),etc.Singlecrystalsareelectricallyandopticallyhomogeneousmaterials.Forexample,high-qualitySisinglecrystalsarewidelyusedforLSIdevicesandpowerdevices.WeareconductingvariouscooperativeresearcheswithcompaniesasoneoftheleadingresearchgroupsrelatedtobulkcrystalgrowthinJapan.ToshinoriTaishiRecently,smartphoneachievestheexciting,enjoyable,andconvenientlife.Thisisbecausewirelesscommunicationcansupporttheexchangingofmessagethroughtheinternetanytimeandanywhere.However,thescarcityoffrequencyspectrum,whichisaradioresource,becomesmoreseriousproblem.Forsolvingthescarcityoffrequencyspectrum,thecognitiveradioandthewirelesssensornetworksarepowerfultechnique.Thetakyulaboratoryproposestheresourceallocationwiththeradioenvironmentalawarenessandthusthesensornetworksforrecognizingtheradioenvironmentalareconsidered.Osamu TakyuWearecurrentlyworkingonthegrowthofvarioussinglecrystalscalled“GreenMaterials”thatcontributetoenvironmentalpreservation.β-Ga2O3,oneofthekeymaterialsforourlaboratory,willbeusedasasubstrateforthenextgenerationpowerdeviceswithlowconsumption.Westudythegrowthoflarge-scaleandhigh-qualitybulkcrystalsbyverticalBridgmantechnique,whichisoneofthemeltgrowthmethods.Studentsinourlaboratoryacquiremanyskillsandtechniquesrelatedtothecrystalgrowthandtheylearnhowtoapplythem.Aftergraduation,wehopethatourskillfulstudentsactivelyworkinvariouscompaniesoracademicinstitutions.Recently,thewirelessmoduleisappliedtothevariousobjects,suchaselectricalpowermeter,electricalappliances,andvendermachines.Suchcommunicationshasrecentlyattractedmuchattention,andtheyarecalledmachine-tomachine(M2M)anddevice-to-device(D2D)communications.isspreadingoverourlife,howtousefrequencyspectrumforhighefficientisimportantproblem.Thealumnusofourlaboratoryplayactiverolesasresearchersindevelopingthewirelesscommunicationsinthemanufacturingandwirelesscommunicationvendors.communicationsAswirelessindustriesSeveral typical single crystals, such as silicon and sapphire, grown in our laboratory or cooperative companies.Operators are observing the inside of the Czochralski growth furnace. Inset: A silicon single crystal grown from the melt. Antennabeamformingcancontroltheemittingwaveconcentratingtoalotofmobileterminalsaswellasconstructingthewhitespaceoffrequencyspectrumforexploiting.ExperimentationofWirelessSensorNetworksforremotemonitoringthewaterlevelintheriverandthelake.ThisisoneoftoMachineCommunications(M2M)orInternetofThings(IoT).thesystemmodelsforMachineThe Growth of Functional Single Crystals leads to the Future, Innovative Society!Cognitive Radio and Wireless Sensor Network for Internet of Things
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