工学部_研究紹介_2019_英語版

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Piezoelectricmaterialisusedasanultrasonictransducerandanignitionelementoflighter.Thematerialgenerateselectricity(electriccharges)whenpressureisapplied,anditdeforms(expandsandcontracts)whenavoltageisappliedonthecontrary.Sincemanyofpiezoelectricceramicsusednowcontainharmfullead,thereisanincreasingdemandforlead-freepiezoelectricmaterials.Thereforeweconductresearchonsuchlead-freepiezoelectricceramics.Furthermore,weareapplyingpiezoelectricceramicstodevelopultrasonicmotors.Piezoelectricmaterialcanconvertkineticenergy(pressure,displacement)andelectricalenergy,thusisappliednotonlytoasensorbuttoavibratorandanactuator.Sincetheirperformancesdependonthecharacteristicsofthematerial,itisimportanttodoresearchonthematerialdevelopment.Besides,thedevelopmentofpiezoelectricmaterialrequiresanewdevice.Ourstudentsworkhardtoexploreanewmaterialanditsapplication.NorikoBambaAssociateProfessorI worked at ShinshuUniversity after received the Ph.D. (Engineering) in Materials Chemistry atOsakaUniversityin1998.Researchfield:･electronicmaterialsMakepiezoelectricceramics.Powderwaspressedintoapelletusingthispressingmachineandfiredatabove1000oC,thenceramicswasobtained.Piezoelectric Material ～Material development and application～Characterizationoftheceramics.Thedielectricconstantorresonancepropertyaremeasuredwithchangingtemperatureorfrequency.Ourgraduatesareworkingatelectricpowdercompaniesandhomeelectricsmakersoraspublicofficials.Iamteachinghowtocarryouttheresearchandsolveproblemsthroughtheresearch,sothatthestudentswillsucceedinplayinanyfields.BambaLabIn the FutureAfter GraduationElectrical& Computer EngineeringWehavetostudysemiconductormaterialsanddevices.Andmanufacturalequipmenthastobeoperatedandmaintainbyyourself.Youcanbeactiveinvariousfieldofelectricalmanufacturer,materialsandequipment.Integratedcircuits(ICs)technologyarewidelyusedfortoday’sinformationsociety.However,highspeedcalculationandprocessinghavebeendemandedyearafteryear.Asthemoment,consistingdevices(LSIs)fortheICchipsisminiaturizationandtheincreaseofthedevicenumber.Essentialsolutionisnecessaryfortheissuebecauseminiaturizationisreachedatomicsize.Inordertosolvetheproblem,theintroductionofhighmobilitymaterials,opticalcommunicationand/orspinhavebeenproposed.Layeredmaterialsincludinggrapheneandtransitionmetaldichalcogenidehavereceivedmuchattentionfornoveloptoelectronicspinmaterials.Layeredmaterialshavebeenreceivedmuchattentionbecauseofgraphenestudy.Forlayeredmaterials,theformationofhighqualitycrystalsareoneofimportantissue,andtheissueisdifficult.Inaddition,Iamstudyingnovelmaterialswithlarge-scaleformation,whichareimportantforlayeredmaterials.Inthislaboratory,researchresultshavebeendisseminatedtotheworld.NoriyukiUrakamiAssistant ProfessorPh.D.(Engineering) Toyohashi University of technology. Research topics ･Semiconductor･Crystal growth･Functional materialsResearch for Novel Functional Materialsand Device : Layered MaterialsUrakamiLab.In the FutureAfter GraduationElectrical& Computer EngineeringStructureofgraphiticcarbonnitrideasacarbonbasedcompoundsemiconductor.Molybdenumdisulfide(MoS2)thin-filmonc-planesapphiresubstrate.TransmissionelectronmicroscopyimageforMoS2sample.24