简介：Photoelectricpropertyofpolyanilinedopedwithdodecyl-benzeneincreasesobviously,whenpolyanilinedopedwithDBSAisirradiatedwithlight,Mixtureofsensitivematerialisadvantageoustotheabsorptionofpolyanilineinvisiblelightspectrum,andtheconductivityisalsoimproved.TheresultsofdielectricmeasurementsonpolyanilinedopedwithDBSAinanAl-PAn-DBSA-Alconfigurationasfunctionoffrequencyandtemperaturearereported.Thespace-chargepolarizationphenomenonisobserved.Carrierlifetimeismicrosecondmagnitudeandmobilityis(0.001-0.1)cm^2/V·s,whichareobtainedbycalculationorexperiment.Theactiveenergyisobtainedfromtherelationbetweenconductivityandtemperature.TheconductingmechanismofPAn-DBSAisanalyzed.

简介：Weproposethatnanomaterialsareusedforfibers.Anovelnano-InPdopedfiberhasbeenfabricatedbythemethodofmodifiedchemicalvapordeposition(MCVD).Ithasbeenmeasuredthatthedopingconcentrationofphosphoruselementis0.1%.TherelationshipbetweenrefractiveindexandthewavelengthisobtainedbyfittingexperimentaldatatoSellmeierequation.Dispersionofthefiberhasbeencalculatedinthewavelengthrangeof1.2-1.6μm.Asthewavelengthvariesfrom1.20μmto1.60μm,dispersionparamete...

简介：Dopedmicro-crystallinesiliconfilmsaredepositedattemperaturesaslowas400℃bythecatalyticchemicalvapordepositionmethodusingasilaneandhydrogengasmixture.ElectricalpropertiessuchasthecarrierconcentrationandtheHallmobilityareinvestigatedforvariousmeasuringtemperatures.Itisfoundthatthegrainsofmicro-crystallinesiliconarepreferentiallyorientedalongthe(220)direction,andthattheHallmobilityislargerthan8cm^2·V^-1·s^-1,thecarrierconcentrationisabout1×10^17cm^-1-1×10^19cm^-3atroomtemperature.

简介：Theeffectsofthevariationsinfiberlength,fibermirrorreflectanceonefficiencyandoutputpowerareexperimentallyinvestigatedforerbium-dopeddoublepassbackwardsuperfluorescentfibersources(SFSs).Theinfluenceoffiberlengthonmeanwavelengthstability(MWS)hasalsobeendemonstrated.Byincorporatingashortsectionofun-pumpederbium-dopedfiber(EDF)attheoutputport,thepumppowerdependentonMWSbecomesindependentofpumpedEDFlength.Thisisanovelphenomenonthathasn'tbeenreporteduptonow,andshouldbehelpfultoSFSfabricationandtheoryanalysis.ByusingafiberMichelsoninterferometerasspectrumslicingcomponent,amulti-wavelengthfibersource(MWFS)with～20channels(from1542nmto1559nm)isgot.TheMWFShasachannelspacingof～0.8nmwhichsatisfiesITU-standard.Theintensityfluctuationamongchannelsislessthan0.5dB,andtheextinctionratioofallchannelsisabove14dB.ThiskindofMWFSshouldbeusefultowavelengthdivisionmultiplexingsystems.

简介：Wedemonstrateanelectric-controlledterahertz(THz)modulatorwhichcanbeusedtorealizeamplitudemodulationofterahertzwaveswithslightphoto-doping.TheTHzpulsetransmissionwasefficientlymodulatedbyelectricallycontrollingthemonolayersilicon-baseddevice.Themodulationdepthreached100%almostwhentheappliedvoltagewas7Vatanexternallaserintensityof0.6W/cm2.Thesaturationvoltagereducedwiththeincreaseofthephoto-excitedintensity.InaTHzcontinuouswave(CW)system,asignificantfallinbothTHztransmissionandreflectionwasalsoobservedwiththeincreaseofappliedvoltage.ThisreductionintheTHztransmissionandreflectionwasinducedbytheabsorptionforelectroninjection.Theresultsshowthatahigh-efficiencyandhighmodulationdepthbroadbandelectric-controlledterahertzmodulatorinapureSistructurehasbeenrealized.

简介：剩余紧张和损坏由Si培植导致了在轧了样品被学习了，以及电子特征。这些成长得当的样品与Si的不同剂量被植入(1

简介：ThemethodtopumptheFBGwrittenintoanEr3+-dopedopticalfiberisproposedtoincreasethegroupvelocityofaprobingpulsebasedonthefactsthatpump-inducedprocesschangestherefractiveindexanddispersionassociatedwiththe4I15/2-4I13/2transitioninEr3+-dopedopticalfiber.Thesystemequationsarederived.Theeffectsofpumppoweranddopingconcentrationonthegroupvelocityarediscussed.

简介：Nitrogen-dopedamorphouscarbonthinfilmsaredepositedontheceramicsubstratescoatedwithTifilmbyusingdirectcurrentmagnetronsputteringtechniqueatN2andArgasmixtureatmosphereduringdeposition.Thefieldemissionpropertiesofthedepositedfilmshavebeeninvestigated.Thethresholdfieldaslowas5.93V/μmisobtainedandthemaximumcurrentdensityincreasesfrom4μA/cm2to20.67μA/cm2at10.67V/μmcomparingwithundopedamorphousfilm.Theresultsshowthatnitrogendopingplaysanimportantroleinfieldemissionofamorphouscarbonthinfilms.

简介：日前,亚洲知名的卫星与数字传媒服务提供商-Speedcast公司牵手印度尼西亚最大的电信运营商PT公司,准备在不久的将来,为印尼超过30万的电信宽带用户提供20个频道的视频内容服务。在新加坡举行的亚洲通信

简介：ThepreparationofPT/PEK-cfilmsisreportedaswellastheirdielectricandopticalproperties.Thec-axisorientationratioofthefilmsis68%.Dielectricconstantandlossfactorat10kHzisabout4.023F/mand0.003,respectively.Therefractiveindicesofthefilms,neandno,are1.6573and1.6278at0.63μmwavelength,respectively.Theopticalband-gapofthefilmwithathicknessof2.33μmisfoundtobe3.06eV

简介：Thedielectricpropertiesofceramicswithcompositionof(Sr1-xBix)TiO3+x/2(wherex=0.05～0.70)weremeasuredatfrequencyof1MHz.Theexperimentalresultsindicatethatthedielectricpropertiesof(Sr1-xBix)TiO3+x/2systemaregreatlyvariedwithanincreaseofthestoichiometricamountsofBi2O3.Therelativepermittivityofthesolidsolutionsishigh,andthedissipationfactorislow.Thepositronannihilationtechnique(PAT)wasadoptedtostudythedefectstructure.AnexplanationofthedielectricpropertiesofBi-dopedSrTiO3ceramicshasbeensuggestedintermsofelectron-compensationandvacancyordefect-compensationmechanismsandspace-chargepolarizationmechanism.

简介：一光谱在波长部门multiplexing分析嗯做波导放大器(EDWA)的数值分析法被介绍。这个模型基于道格拉斯计划修改的有限差分横梁繁殖方法，它能高效地减少截断误差和时间消费。由迭加为试验性的曲线的Lorentzian功能，EDWA的光谱特性能被调查。结果证明在980nm抽的EDWA的泵效率在1480nm比那高。由讲道理地增加泵长度和耳集中，同时，更大的信号获得能被获得。考虑theup变换和合作的跨松驰的效果，频谱分析高度，dopedEDWA在一条更宽的频带上被执行。

简介：用极化的做镱的锁模式的纤维激光敏感隔离乾和极化控制器(PC)被报导。在正常分散，纤维激光能由调整PC的位置以多脉搏状态震荡。在极化状态isn鈥檛改变了的条件上，从单身者的做镱的锁模式的纤维激光变化的产量由增加泵力量搏动到多脉搏。纤维激光能由小心地调整PC1和PC2完成不同多脉搏输出。CLC数字TN253这个工作被中国(栅栏号码60577019和号码60137010)的国家科学基金支持了。

简介：一个方向联系了polarizer(DRP)在一个激光洞被使用消除空间洞在双向嗯做纤维戒指激光烧获得媒介。单个纵的模式的稳定的操作与可比较的紧张被完成为顺时针方向并且逆时针方向方向。在噪音上的30dB的一个敲击信号被观察。用作一个回转仪的这激光被表明，在敲击频率移动和洞旋转率之间的一种好线性关系被获得。CLC数字TN253

简介：作为入门级的投影机，松下的PT-AE10E甫一推出即在市场引起轰动。精巧的外形、不俗的品质及相宜的市场价格，很快AE-200、AE-300又相继问世，但总体感觉上只是AE-100E的“补强”版，而且AE-300在市时光可说是昙花一现，随即被AE500E的锋芒所盖，也使得松下AE×××有了一个较完整且对应?西消费群体的产品系列。

简介：做Fe的ZnO(Zn0.99Fe0.01O)粉末被球milling成功地与不同milling时间准备，并且用X光检查衍射(XRD)被调查，扫描电子显微镜(SEM)，紫外可见(紫外力)光谱学，颤动的样品磁强计(VSM)和电子顺磁的回声(EPR)光谱学。用XRD的结构的分析表明在时间能在wurtzite，并且在XRD使结晶的不同milling的做Fe的ZnOmilled组织模式，与有XRD仪器的敏感的Fe簇有关的第二等的阶段不能被发现。为24h的样品milled的SEM图象显示出球形的nanoparticles的存在。从光分析，光乐队差距被发现与增加milling时间减少，它显示Fe2+离子的加入进ZnO格子。用VSM的磁化测量表明nanoparticles在房间温度展出铁磁性的行为，并且磁化与增加milling时间逐渐地增加。结论被nanoparticles的顺磁的回声在房间温度检验了的电子进一步证实，它显示出与Fe离子有关的一个强烈、宽广的铁磁性的回声信号。

简介：Aswitchableandtunableytterbium-dopedfiberringlaser(YDFL)isreportedanddemonstrated.EmployingaSagnacloopmirrorfabricatedbyan85-cm-longpolarization-maintainingfiber(PMF),theproposedYDFLcanoperatewithstabledual-wavelengthlasingortunablesingle-wavelengthlasingaround1064nm.Bothstabledual-wavelengthlasingandtunablesingle-wavelengthlasingareachievedbyadjustingapolarizationcontrollerintheSagnacloopmirror.Theexperimentalresultsshowthattheoutputoftheproposedfiberlaserwithtwodifferentoperationmodesisratherstableatroomtemperature.

简介：Nanocrystallineundoped和镍做了锌氧化物(Zn1?xNixO，x=0.00，0.01)粉末被简单、低温度的鈥渁u燃烧方法鈥成功地综合吗？微结构和光吸收和同样准备的样品的排放性质用X光检查衍射(XRD)被获得，扫描电子显微镜学(SEM)，Fourier变换红外线的分光计(FTIR)，紫外可见并且光致发光(PL)。没有任何第二等的阶段，结构学习在做Ni的样品证实六角形的wurtziteZnO的形成。光吸收大小在镍做之上在吸收乐队边显示红移动。乐队差距精力从3.21eV减少到3.17eV。在房间温度下面的同样准备的样品的光致发光系列出现强壮紫外(紫外)并且蓝排放山峰。PL排放研究强烈表明做的Ni能有效地调整在紫外区域在排放山峰导致红移动的精力水平。

简介：ＭｏｌｅｃｕｌａｒＤｏｐｅｄＰｏｌｙｍｅｒＬｉｇｈｔＥｍｉｔｉｎｇＤｉｏｄｅｓｗｉｔｈＡｉｒ－ｓｔａｂｌｅＡｌｕｍｉｎｕｍａｓＣａｔｈｏｄｅ①②ＣＨＥＮＢａｉｊｕｎ，ＨＯＵＪｉｎｇｙｉｎｇ．ＸＵＥＳｈａｎｈｕａ，ＬＩＵＳｈｉｙｏｎｇ（ＳｔａｔｅＫｅｙ...

简介：威盛电子日前推出的VIAPT890芯片组进一步扩展了威盛支持MicrosoftWindowsVista规格的核心逻辑芯片组产品线。据悉，威盛电子这次推出的VIAPT890芯片组可支持包含1066MHz前端汇流排Intel处理器在内的全系列微处理器，并能提供PCIExpress连接功能，同时可支持DDR2存储器规格。此外，该芯片组还拥有完整的功能特性和绝佳的稳定性，因而具有杰出的系统效能。