简介:Theeffectofannealingconditiononsputteredindiumtinoxide(ITO)filmsonquartzwiththethicknessof200nmischaracterizedtoshowenhancedopticaltransparencyandoptimizedelectricalcontactresistivity.Theas-depositedgrownITOfilmexhibitsonly65%and80%transmittanceat532and632.8nm,respectively.Afterannealingat475°Cfor15min,theITOfilmisrefinedtoshowimprovedtransmittanceatshorterwavelengthregion.Thetransmittancesof88.1%at532nmand90.4%at632.8nmcanbeobtained.The325-nmtransmittanceofthepost-annealedITOfilmisgreatlyincreasedfrom12.7%to41.9%.Optimizedelectricalpropertycanbeobtainedwhenannealingbelow450°C,leadingtoaminimumsheetresistanceof26Ω/square.SuchanITOfilmwithenhancedultraviolet(UV)transmittancehasbecomeanalternativecandidateforapplicationsincurrentUVphotonicdevices.Themorphologyandconductanceoftheas-depositedandannealedITOfilmsaredeterminedbyusinganatomicforcemicroscopy(AFM),showingagreatchangeontheuniformitydistributionwithfiniteimprovementonthesurfaceconductanceoftheITOfilmafterannealing.
简介:ThispaperdiscussesthelateYanshanian-Himalayanigneousrockseriesandminerogeneticseries(Chengetal.,1979,1982)relatedtotinpolymetallicdepositsintheTengchongarea.Themulti-stagedifferentiationandevolutionoftheigneousrockseriesledtotheconcentrationofmetalandore-formingelementsinacupolaofagranitebodyformedinthelatestage.TheminerogeneticseriesshowsazoningofNb-Ta-W-Sn,Sn-FeandSnaroundthecupolainspaceandamulti-stageregularityintime.Finallyaminerogeneticmodelandthreekeyfactorsoftinminerogenesisareputforwardfortinpolymetallicdepositsinthearea.
简介:Sn(OH)4waspreparedbytheconventionalsolutionprecipitatemethod,followedbysupercriticalCO2drying.TheresultantSn(OH)4wasdividedintothreealiquotsandcalcinedat400,600and800°C,respectively,thusSnO2nanoparticleswithaveragecrystallitesizesof5,10and25nmwereobtained.Furthermore,threeSnO2thickfilmgassensors(denotedassensorsS-400,S-600andS-800)werefabricatedfromtheaboveSnO2nanoparticles.Theadhesionofsensingmaterialsonthesurfaceofaluminatubeisgood.ComparedtothesensorsS-600andS-800,sensorS-400showedamuchhighersensitivityto1000μL/Lethanol.Ontheotherhand,sensorS-800showedamuchlowerintrinsicresistanceandimprovedselectivitytoethanolthansensorsS-400andS-600.X-Raydiffraction(XRD),transmissionelectronmicroscopy(TEM)andselectiveareaelectrondiffraction(SAED)measurementswereusedtocharacterizetheSnO2nanoparticlescalcinedatdifferenttemperatures.Thedifferencesinthegassensingperformanceofthesesensorswereanalyzedonthebasisofscanningelectronmicroscopy(SEM).
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简介:【摘要】:方法 对于Simon III级男性乳房发育患者采取垂直单蒂法切除乳房及多余皮肤,同时对乳头乳晕复合体重新定位,观察疗效。目的 探讨联合治疗的方式对腺体和皮肤增生达到Simon III级的男性乳房发育患者的疗效。结果 我院乳腺外科自2019年1至2021年6月使用此方法共治疗Simon III级男性乳房发育患者23例,均取得良好治疗效果,患者对术后外观表示满意。结论 对于Simon III级男性乳房发育患者使用垂直单蒂法手术治疗,效果确切,患者痛苦小,恢复快,美容效果明显,值得推广。