Electrical& Computer Electrical& Computer Electrical& ComputerElectrical& ComputerMaininterestofourlaboratoryisthegrowthandevaluationofsemiconductingandfunctionaloxidesinglecrystalssuchassilicon(Si),siliconcarbide(SiC)andgalliumoxide,andsoon.Singlecrystalsareelectrically,optically,andmechanicallyhomogeneousmaterials.Forexample,SisinglecrystalsarewidelyusedforLSIdevicesorsolarcells.WeareoneoftheleadinggroupsinthefieldofbulkcrystalgrowthinJapan.Weareconductingvariouscooperativeresearchesrelatedto“GreenMaterials”withEmeritusProfessorKeigoHoshikawa.Recently,smartphoneachievestheexciting,enjoyable,andconvenientlife.Thisisbecausewirelesscommunicationcansupporttheexchangingofmessagethroughtheinternetanytimeandanywhere.However,itiseasyforwirelesscommunicationtoleaktheprivatemessagebecausetheelectricalwavespreadsoverthefieldspace.TakyuLabpaysattentiontothewirelesssecuritytechnologies,suchasthepenetrationanalysisofelectricalwaveandartificialnoise.Formonitoringthevariouscondition,suchasbuilding,animal,andhuman,thewirelesssensornetworkispowerful.TakyuLabisstudyingthewirelesssecuritytechnologyandthewirelesssensornetworksforthesecureandcomfortlife.Thealumnusofourlaboratoryplayactiverolesasresearchersindevelopingthewirelesscommunicationsinthemanufacturingwirelesscommunicationvendors.Wearecurrentlyworkingonthegrowthofvarioussinglecrystalscalled“GreenMaterials”thatcontributetoenvironmentalpreservation.Sapphire,oneofthekeymaterialsforourlaboratoryisusedasasubstrateforGaN-basedLEDdevices.Thuswestudythegrowthoflarge-scaleandhigh-qualitysapphirecrystalsbyverticalBridgmantechnique,whichisoneofthetypicalmeltgrowthmethods.Studentsinourlaboratoryacquiremanyskillsandtechniquesrelatedtothecrystalgrowthandtheylearnhowtoapplythem.Aftergraduation,wehopethatourskillfulstudentsactivelyworkinvariouscompaniesoracademicinstitutions.Recently,thewirelessmoduleisappliedtothevariousobjects,suchaselectricalpowermeter,vendermachines.Suchcommunicationshasrecentlyattractedmuchattention,andtheyarecalledmachine-tomachine(M2M)anddevice-to-device(D2D)communications.Aswirelesscommunicationsisspreadingoverourlife,securityandsensoraremuchmoreimportant.electricalappliances,industriesandandSeveral 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 germanium single crystal grown from the melt. Eavesdroppermaydrawtheprivatemessagethroughtheintermediatenodeinwirelesscommunication.Ajammingorartificialnoisemakesitdifficult.ExperimentationofWirelessSensorNetworks.ThisisoneofthesystemmodelsforMachinetoMachineCommunications(M2M)orInternetofThings(IoT).Alotofsensorscanchecktheconditionoftrainsforsafetytravel.ToshinoriTaishiProfessorMain research fields are bulk crystal growth and evaluation of crystalline defects. He was born in Nagano.Osamu TakyuAssociate 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.In the FutureAfter GraduationIn the FutureAfter GraduationEngineeringEngineeringEngineeringEngineeringThe Growth of Functional Single Crystals leads to the Future, Innovative Society!Wireless Security and Wireless Sensor Network for Secure and Comfort Life
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