Engineering-Research-Activity2016｜SHINSHU UNIV.

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Robotarmandimpedanceanalyzerusingthecontactexperiment.Relationshipbetweenthechangeinreciprocalmotionalcapacitancebeforeandafterthesensor’sbasecomesintocontactwithmaterialsandYoung’smodulusofmaterials.InItohLab,weconducttheanalysisofthequalityfactor,themotionalcapacitance,andthefrequency,whicharethemostimportantparametersofaquartzcrystaltuningforkforwristwatchapplication,andthechangeinmotionalcapacitance,whichisappliedtoaquartz-crystaltuning-forktactilesensor.Thechangeinthereciprocalofmotionalcapacitance,beforeandafterthesensor’sbasegettingintocontactwithneoprenerubbers,isintrinsicallyinducedbyboththeirdynamicYoung’smodulusandviscosityofneoprenerubbersat32.5kHz.Ourtactilesensorrespondsinawiderangefrom107to109N/m2ofYoung’smodulus.Todevelopatactilesensorlikeahumanhand,westudythetuningfork’sstructurebeingincontactwithviscoelasticmaterialsbytreatingthemasaviscoelasticfoundationdepictedbytheVoigtbody.WeintendtodevelopatactilesensortodetectviscosityofmaterialsbesidestheirhardnessorsoftnessandtoestimatebothdynamicYoung’smodulusandviscosityofviscoelasticmaterialsbyuseofseveraltactilesensorswithdifferentfrequencies.Aquartzcrystaliswidelyusedasatimingsourcefortheconsumerdigitalequipments.Inmanycompanies,however,itisoftentreatedasablackbox.Graduatesareworkingatmotorcarcompaniesandcompaniesthatmanufactureselectroniccomponents.Hideaki ItohProfessorEngaging in analysis of a quartz crystal tuning fork and its application, and analysis of quantized displacement of silicon MEMS resonator form the viewpoint of elastic model.Analysis of the Electrical Equivalent Circuit of a Quartz-crystal Tuning Forkand its Application to a Tactile SensorItohLabElectrical& ElectronicEngineeringIn the FutureAfter GraduationOrganicHybridSolarcellswillbepreparedbyprintingtechniquesbuttheefficiencywillbecomparabletoSisolarcells(~20%)inthenearfuture.TheorganicLEDwillbeanewtypesofpaper-likelightinganddisplays.Thenano-caobonsandhybridmaterialswillbeanewclassoftransparentelectrodes.Theenvironmentalsensorswillbeusedastheultra-fast,high-sensitivehumidity(orgas)sensors,andhealthcareapplications.Manygraduatesworkinthegeneralelectricdevicesmanufacturingcompany,electricpowercompanies,Chemicalcorporation,etc.Theyhavelearnednotonlyaskilloftheelectricalandelectronicengineeringbutalsoanideaoftheglobalenvironmentandthesavingenergy,andknowledgeofvarioustypesofmaterials.Research of Organic Electronic Materialsand Devices, and related Nano-Hybrid TechnologiesOrganicmaterialsandrelatedelectronicdevicesareconsideredasanpowerfulpotentialcandidateforthenext-generation,environmentalfriendly,flexible,ambientelectronics.Wearenowinvestigatingthenewconceptsanddevicephysicsofhighlyefficientorganicsolarcells,organiclightemittingdiodes,ultra-thincapacitors,gassensors,electrodematerilasandrelatednano-hybridmaterialsandtechnologies.EijiItoh Professor (2015-)He received his Ph.Dfrom Tokyo Institute of Technology in 1998. He joined ShinshuUniv. from 1998. Research fields：・Organic Electronics and Related Materials・Organic and Hybrid Solar Cells・Organic Light Emitting Diodes・Environmental Friendly Sensors・Electronics Applications of Nano-Carbons and Hybrid Materials・Polymer DielecricsBottom electrodeTransparent conductive layerAbsorberBuffer layerTop electrodeSubstrateItoh (E) LabElectrical& ElectronicEngineeringIn the FutureAfter Graduation23

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