ToshinoriTaishiThe Growth of Functional Single Crystals leads to the Future, Innovative Society!After GraduationIn the FutureElectrical& Computer EngineeringMaininterestofourlaboratoryisthegrowthandevaluationofsemiconductingandfunctionaloxidesinglecrystalssuchassilicon(Si),Siliconcarbide(SiC)andpotassiumniobate.Singlecrystalsareelectrically,optically,andmechanicallyhomogeneousmaterials.Forexample,SisinglecrystalsarewidelyusedforLSIdevicesorsolarcells.WeareoneoftheleadinggroupsinthefieldofbulkcrystalgrowthinJapan.Weareconductingvariouscooperativeresearchesrelatedto“greenmaterials”withEmeritusProfessorKeigoHoshikawa..Several typical single crystals, such as silicon and sapphire, grown in our laboratory or cooperative companies.Wearecurrentlyworkingonthegrowthofvarioussinglecrystalscalled“greenmaterials”thatcontributetoenvironmentalpreservation.Sapphire,oneofthekeymaterialsforourlaboratoryisusedasasubstrateforGaN-basedLEDdevices.Thuswestudythegrowthoflarge-scaleandhighqualitysapphirecrystalsbyverticalBridgmantechnique,whichisoneofthetypicalmeltgrowthmethods.Operators are observing the inside of the Czochralski growth furnace. Inset: A silicon germanium single crystal grown from the melt. Studentsinourlaboratoryacquiremanyskillsandtechniquesrelatedtothecrystalgrowthandtheylearnhowtoapplythem.Aftergraduation,wehopethatourskillfulstudentsactivelyworkinvariouscompaniesoracademicinstitutions.Associate ProfessorMain research fields are bulk crystal growth and evaluation of crystalline defects. He was born in Nagano.Osamu TakyuIn the FutureAfter GraduationRecently,thewirelessmoduleisappliedtothevariousobjects,suchaselectricalpowermeter,electricalappliances,andvendermachines.Suchcommunicationshasrecentlyattractedmuchattention,andtheyarecalledmachine-tomachine(M2M)anddevice-to-device(D2D)communications.Aswirelesscommunicationsisspreadingoverourlife,securityandsensoraremuchmoreimportant.Wireless Security and Wireless Sensor Network for Secure and Comfort LifeThealumnusofourlaboratoryplayactiverolesasresearchersindevelopingthewirelesscommunicationsinthemanufacturingindustriesandwirelesscommunicationvendors.Electrical& Computer EngineeringAssociate 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.Recently,smartphoneachievestheexciting,enjoyable,andconvenientlife.Thisisbecausewirelesscommunicationcansupporttheexchangingofmessagethroughtheinternetanytimeandanywhere.However,itiseasyforwirelesscommunicationtoleaktheprivatemessagebecausetheelectricalwavespreadsoverthefieldspace.TakyuLabpaysattentiontothewirelesssecuritytechnologies,suchasthepenetrationanalysisofelectricalwaveandartificialnoise.Formonitoringthevariouscondition,suchasbuilding,animal,andhuman,thewirelesssensornetworkispowerful.TakyuLabisstudyingthewirelesssecuritytechnologyandthewirelesssensornetworksforthesecureandcomfortlife.Eavesdroppermaydrawtheprivatemessagethroughtheintermediatenodeinwirelesscommunication.Ajammingorartificialnoisemakesitdifficult.ExperimentationofWirelessSensorNetworks.ThisisoneofthesystemmodelsforMachinetoMachineCommunications(M2M)orInternetofThings(IoT).Alotofsensorscanchecktheconditionoftrainsforsafetytravel.26
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