i1tii Iiti&o.Non-destructivemostdeermnaonmagng f ti circuTransmssonure ilti-layer prinedit 18mmnspectionmuboard42Water content isvisualized by the redcontrast.25mmEmbedded circuit layercan bevisualized.1.010.0@0.2THzFrequency10InfraredVisualLightzHT001transmissionimagingforTerahertzwavesshowsbothforFig.1 (a) OCT system, (b) Ultrathin imaging probe.Appl. Sci.2019, 9, 216Fig.2 (a) Imaging probe(SMMF) andinvivoratbrain.Fig.3 (a) 3D sectional images and (b) its expanded area.-wavemm-wave TerahertzWaveT-ray,T-bandTerahertzImageVisualImageGraduate School of Science and Engineering Superconductor Electronics Devices, Electronics Materials Please join us.* N. Tanno, T. Ichimuraand A. Saeki, Japanese Patent, No.2010042 (1990) *N. Tanno, T. Ichimura and A. Saeki, Japanese Patent, No.2010042 (1990)Yamagata University,Graduate School of Science and Engineering Yamagata University Graduate School of Science and Engineering Research Interest ：Optical imagingResearch InterestE-mail ：msato@yz.yamagata-u.ac.jpOptical imagingTel &Fax ：+81-238-26-3187E-mail ・ msato@yz.yamagata-u.ac.jpTel & Fax ・ +81-238-26-3187HP：http://msatolab.yz.yamagata-u.ac.jp/HP・http://msatolab.yz.yamagata-u.ac.jp/ContentContent：Opticalcoherencetomography(OCT)tomeasuresectionalimages Optical coherence tomography (OCT) to measure sectional ofbiologicaltissueshasbeeninventedatYamagataUniversityatimages of biological tissues has been invented at Yamagata 1990*.OCThasadvantagessuchasahighspatialresolutionaroundUniversity at 1990*. OCT has advantages such as a high spatial 10micronandnon-invasions.OCThasbeenalreadyusedintheresolution around 10 micron and non-invasions. OCT has been ophthalmologyanditsapplicationsarespreadingclinicallyincludingalready used in the ophthalmology and its applications are thefieldofgeneralindustries.Atpresentmainoursubjectsareasspreading clinically including the field of general industries. At present main our subjects are as below.below.1. Optical sectional imaging at deeper area1.Opticalsectionalimagingatdeeperarea We are developing ultrathin imaging probe using optical fiber Wearedevelopingultrathinimagingprobeusingopticalfiberforfor optical communications. We have already reported the in vivo opticalcommunications.Wehavealreadyreportedtheinvivoratrat brain sectional images of nerve fibers shown in Fig.1-3. We brainsectionalimagesofnervefibersshowninFig.1-3.Wecallitcall it short multimode fiber(SMMF) of diameter 125μm and length shortmultimodefiber(SMMF)ofdiameter125μmandlength7.4mm.7.4mm.Theinformationofspatialarrangementsanddensitycouldbe The information of spatial arrangements and density could be obtained. This would be useful to study on functions of brain and obtained.Thiswouldbeusefultostudyonfunctionsofbrainandtoto develop new medicines.developnewmedicines.2. New techniques and application of optical measurement.2.Newtechniquesandapplicationofopticalmeasurement. We are interested in developing new techniques and application Weareinterestedindevelopingnewtechniquesandapplicationusing signal processing and optoelectronics devices. usingsignalprocessingandoptoelectronicsdevices.Appealing points: Please join us.Special objectivesOptical Sectional Imaging for Tissues and 3D Scattering MediaTerahertz wave device development and sensing applicationProfessor Manabu SatoOptical Sectional Imaging for Tissues and 3D Scattering MediaProfessor Manabu SatoTerahertz wave devicedevelopment and sensingapplicationProfessor Kensuke NakajimaProfessorKensukeNakajimaContentContent： Electromagnetic waves in the frequency ranging from 0.1 to 10 Electromagneticwavesinthefrequencyrangingfrom0.1to10THz (1THz = 1,000 GHz =1×1012 Hz) referred as Terahertz THz(1THz=1,000GHz=1×1012Hz)referredasTerahertzWaveWave is wide frequency frontier expected to be the back bone of iswidefrequencyfrontierexpectedtobethebackboneofhigh-high-speed board communication. Terahertz waves shows both speedboardcommunication.characteristics of the penetration likely to radio wave and the characteristicsofthepenetrationlikelytoradiowaveandthestraightstraight traveling likely to optical wave because of the frequency travelinglikelytoopticalwavebecauseofthefrequencyrangerange spread between microwave (radio wave) and infrared spreadbetweenmicrowave(radiowave)andinfrared(opticalwave).(optical wave). Moreover, the discoveries of the finger print Moreover,thediscoveriesofthefingerprintspectrumofbio-spectrum of bio-materials, drags, explosive, etc. in the range materials,drags,explosive,etc.intherangeattractsattentionsonattracts attentions on terahertz transmission imaging for variety terahertzvarietyapplicationfieldsapplication fields including medical, security and industrial includingmedical,securityandindustrialinspection.inspection.Iinvestigateterahertzsensitivedetectorsandemittingdevices I investigate terahertz sensitive detectors and emitting devices basedonsuperconductorelectronics.Wealsodevelopaterahertzbased on superconductor electronics. We also develop a imagingsystemandaterahertzspectroscopyfor0.2to1THz.Atterahertz imaging system and a terahertz spectroscopy for 0.2 to present,wecanobtainterahertzimagesshownintheleftcolumnfor1THz. At present, we can obtain terahertz images shown in the theexamples.left column for the examples.Appealingpoint:IcangiveadviceonmeasurementandapplicationSpecial objectiveselectromagneticwavesfromradiowave,lighttoX-ray. I can give advice on measurement and application for electromagnetic waves from radio wave, light to X-ray. Affiliation: Graduate School of Science and Engineering Research interest：SuperconductorElectronicsYamagata University Graduate School of Science and Engineering Devices,ElectronicsMaterialsAffiliationE-mail：nakajima@yz.yamagata-u.ac.jp Research InterestTel：+81-238-26-3291Fax：+81-238-26-3291E-mail ・ nakajima@yz.yamagata-u.ac.jpTel ・ +81-238-26-3291Fax ・ +81-238-26-3291
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