Engineering-Research-Activity2015｜SHINSHU UNIV.

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サイズW7.5cm×H4.35cm配置位置横11cm、縦2.5cmサイズW7.5cm×H4.35cm配置位置横11cm、縦7.8cm（写真）サイズW3cm×H2.65cm配置位置横0.5cm、縦7.42cm（QRコード）サイズW1.76cm×H1.76cmNanometer-sizedmaterialsandtheirorganizationonsubstratearestronglyrequiredforrecentdevicefabricationbecauseofthedeviceminiaturization.Furthermore,theimprovementofdeviceperformanceisrequiredfortheconvenienceofourdailylife.TheSakai’sresearchgroupattemptstodevelop“high-puritynano-materials”becausetheyareexpectedtoexhibithigherperformance.Sakai LabSakai’sresearchaimstodevelopthemethodologiesforfabricationofthenanometer-andmicrometer-sizedmaterials(e.g.,metalnanoparticles,mesoporousmaterialsandemulsions)andorganizationofnano-materialsintomulti-dimensional(1D,2Dand3D)structuresinsolutionsand/oratinterfacesinanefficientmannerwithrespecttocost,energyandenvironment.Inparticular,amphiphiliccharacters(dualnatures)ofmoleculesorpolymersareessentialelementsfordesigningthemethodologies.ToshioSakaiAssociateProfessorGenesisResearchInstitute,Inc.,TheStateUniversityofNewYork,TokyoUniversityofScienceandShinshuUniversity.ColloidandInterfaceScience.Ultrasonicators and homogenizers are used for emulsification, dispersion and chemical reaction.Nano-architecture based on colloid and interface scienceOptical micrograph of oil-in-water (O/W) emulsion..Emulsions are used in various fields such as cosmetic, food and medical field.Manyofourtechnologicalprocessessuchaspapermaking,potterymakingandthefabricationofsoaps,cosmeticsandmedicinesinvolvemanipulationofcolloidalsystems.Colloidandinterfacescienceprovidesvariousopportunitiesintheindustriessuchascatalyst,electronics,toiletryandmedicalfields.O/WChemistry& MaterialEngineeringIn the FutureAfter GraduationBacterial Cellulose Nanofiber-Amazing World of Fiber Spinning by Bacteria -MizunoLabCelluloseisproducedbysomekindsofbacteriaaswellasplants.Itiscalledasbacterialcelluloseormicrobialcellulose,andisusedforvariousindustrialpurposes.Inourlaboratory,wefocusonthefunctionoftheproteincomplexparticipatingincellulosebiosynthesis,whichbehaveslikeafiberspinningmachine.Itistoosmalltoobservethestructureofthisproteincomplexbymicroscope.ThuswearetryingtostudyitsstructurebyX-raycrystallographicanalysisattheatomiclevel.Thewidthofcellulosefibrilextrudedfromasingleproteincomplexisabout1.5nm.Innature,thesecellulosefibersarebundledtoformcellulosefibers(10-100nm)basedon?thearrayofproteincomplexonthecellsurfaceandthemovementofbacterium.Ifthearrayofproteincomplexcanbecontrolled,itmightbepossibletomakeacellulosenanofiberwithavarietyofthicknessandlength.MasahiroMizuno2005:Ph.DfromTokyoUniversityofAgricultureandTechnology2006-:AssistantProfessorofFacultyofEngineering,ShinshuUniversityX-raycrystallographyofcarbohydraterelatedenzymes.TEM image of cellulose producing bacterium (left), and SEM image of bacteria cellulose (right).Theteamworkisveryimportanttoovercomearesearchtheme.MoststudentsstayatShinshuUniversityfortheirgraduatestudies.Othersfindjobsinmanufacturingcompaniesinvariousfieldssuchaschemistry,electronics,andfood.Crystals of cellulose biosynthesis related protein.Chemistry& MaterialEngineeringIn the FutureAfter Graduation46

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