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简介：Wepresentanovelandsimplemethodtoobtainanultrawidefreespectralrange(FSR)siliconringresonatortogetherwithatuningrangecoveringtheentirespectrumfrom1500to1600nm.AringresonatorwithalargeFSRtogetherwithahighQfactor,hightuningefficiency,andlowfabricationcostandcomplexityisdesiredformanyapplications.Inthispaper,weintroduceanovelwaytomakesucharingresonator,whichtakesadvantageofthewell-knownresonance-splittingphenomenon.ItisasingleringresonatorwithanFSRofmorethan150nmaround1550nmandwhichhasaneasythermo-optictunabilitythatcanproduceatuningrangearound90nmorevenmore.Moreover,thedeviceissimpletoimplementandcanbefabricatedinstandardcomplementarymetal-oxidesemiconductortechnologywithoutrequiringanykindofcomplicatedprocessingorextramaterials.Thepotentialapplicationsincludesinglemodelasercavities,wavelengthdivisionmultiplexingfilters,(de)multiplexers,opticalsensors,andintegratedreflectors.

简介：Weproposeanddemonstrateamultifunctionallocation-dependentmetamaterialintheterahertz(THz)rangeinwhichtheunitcellconsistsoftwopairsofcoupledresonators.Experimentalandsimulationresultsofourdevicesrevealthatbothpairsofthecoupledresonatorswillkeeptheirindividualresonancemodeswhentheyjointogether.Thus,theoveralltransmissionspectrumisacombinationoffrequencyresponsespectraofitscorrespondingconstituentparts.Whilechangingthelocationsoftheinnerresonatorsinourstructure,controllablewidthoftransmissionwindowandchangeablenumberoftransmissiondipscanberealized.Ourdesignprovidesafeasiblestructureformultifunctionalmicroelectromechanicaldevices.

简介：Tostudytheroom-temperaturestabledefectsinducedbyelectronirradiation,commercialborosilicateglasseswereirradiatedby1.2MeVelectronsandthenultraviolet(UV)opticalabsorption(OA)spectraweremeasured.Twocharacteristicbandswererevealedbeforeirradiation,andtheywereattributedtosilicondanglingbond(E’-center)andFe3+species,respectively.TheexistenceofFe3+wasconfirmedbyelectronparamagneticresonance(EPR)measurements.Afterirradiation,theabsorptionspectrarevealedirradiation-inducedchanges,whilethecontentofE’-centerdidnotchangeinthedeepultraviolet(DUV)region.TheslightlyreducedOAspectraat4.9eVwassupposedtotransformFe3+speciestoFe2+speciesandthistransformationleadstotheappearanceof4.3eVOAband.Bycalculatingintensityvariation,thetransformationofFewasestimatedtobeabout5%andtheopticalabsorptioncrosssectionofFe2+speciesiscalculatedtobe2.2timeslargerthanthatofFe3+species.Peroxylinkage(POL,≡Si–O–O–Si≡),whichresultsina3.7eVOAband,isspeculatednottobefromSi–ObondbreakbutfromSi–O–Bbond,Si–O–Albond,orSi–O–Nabondbreak.Theco-presencedefectwithPOLisprobablyresponsiblefor2.9-eVOAband.

简介：Inthiswork,westudythephotonicbandofcumulativeFibonaccilattices,ofwhichthestructureiscomposedofallgeneratedunitsinaFibonaccisequence.TheresultsarecomparedwithdistributedBraggreflector(DBR)structureswiththesamenumbersoflayers.Photonicbandgapsarefoundattwocharacteristicfrequencies,symmetricallyseparatedfromthecentralbandgapintheDBRcounterpart.FieldamplitudeandphasedistributionintheFibonaccilatticeindicatesaninterferentialoriginofthebandgaps.Fouriertransformontherefractiveindexprofileiscarriedout,andtheresultconfirmsadeterminatelong-rangeperiodicitythatagreeswellwiththephotonicbandstructure.

简介：在不同温度的非结晶的CuHf合金的结构的因素由使用高温度X光衍射计的redetermined。theshort范围顺序结构而且中等范围的顺序结构在非结晶的CuHfalloys存在，这被发现不仅。合金融化的CuHf的动态粘性被扭力的摆动粘度计测量。脆弱过热CuHf合金融化基于粘性数据被计算。形成CuHf的能力的玻璃是的试验性的结果表演仔细与脆弱有关他们的超级加热融化。在中等范围顺序结构和脆弱之间的关系过热融化也在非结晶的CuHfalloys被建立了。与supercooled液体的脆弱相对照，过热的液体的脆弱答应一条更好的途径到反映形成液体的玻璃的动力学。

简介：Itisimportanttoquantitativelyunderstandthemethaneadsorptionandtransportmechanismincoalforanevaluationofthereservesandforitsproductionforecast.Inthiswork,ablockcoalsamplewaschosentoperformtheCH4adsorptionexperimentsusingthegravimetricmethodattemperaturesof293.60K,311.26K,332.98Kand352.55Kandpressuresupto19MPa.TheexcessadsorptioncapacityofCH4indryblockanthraciteincreased,followedbyasequencedecreasewiththeincreasingpressure.Hightemperaturerestrainedthegrowthoftheexcessadsorptionduetothattheadsorptionisanintrinsicallyphysicalandexothermicprocess.Theexcessadsorptionpeakdecreasedslowlywiththeincreaseoftemperatureandintersectedatapressureofmorethan18MPa;meanwhile,thepressureattheexcessadsorptionpeakincreased.Theexistingcorrelationswereexaminedintermsofdensityratherthanpressure.TheDR+kcorrelation,withanaveragerelativedeviationof±0.51%,fittedourdatabetterthantheothers,withanaveragerelativedeviationofupto2.29%.ThetransportationcharacteristicsofCH4adsorptionwasalsoinvestigatedinthisstudy,includingtheadsorptionrateanddiffusioninblockcoal.Thekineticdatacouldbedescribedbyamodifieduniporemodel.Theadsorptionrateswerefoundtoexhibitdependenceonpressureandtemperatureatlowpressures,whilethecalculateddiffusivitiesexhibitedlittletemperaturedependence.Inaddition,thekineticcharacteristicswerecomparedbetweenCH4andCO2adsorptionontheblockcoal.TheexcessadsorptionratiosofCO2toCH4obtainedfromtheDR+kmodeldecreasedwiththeincreasingpressure.

简介：当branes的二栈是到对方的没放的平行时，我们概括在branes的二平行的栈之间的远程的相互作用的计算到各种各样的案例。我们分类相互作用的性质(排斥或吸引人)为每个专辑，大小写和这个分类能被用来认为在象brane界限状态那样的二个复杂brane系统之间的远程的相互作用的性质正当。我们将在这份报纸提供明确的例子表明这。

简介：Anultrasensitivebiosensorbasedonhybridstructureandcomposedoflong-rangesurfaceplasmonpolariton(LRSPP)anddielectricplanarwaveguide(PWG)modesisproposed.BothPWGandLRSPPmodeshavestrongresonancestoformstrongcouplingbetweenthetwomodes,andthetwomodescancoupletoenhancesensitivityofsensors.Inthehybridstructure,PWGiscomposedofcytop–Si–cytopmultilayersandtheLRSPPconfigurationiscomposedofcytop–metal–sensingmediummultilayerslabs.Thehighestimagingsensitivitiesof2264and3619RIU-1wererealizedintheproposedsensorsbasedonAuandAl-monolayergraphene,respectively,whicharenearly1.2and1.9timeslargerthanthe1910RIU-1sensitivityoftheconventionalLRSPRsensor(LRSPPsensor).Moreover,itisdemonstratedthatthePWG-coupledLRSPPbiosensorisapplicabletothesensingmedium,withrefractiveindexinthevicinityof1.34.

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简介：这篇论文论述一个多模式控制计划为一软开关回扫在全部负担上完成高效率和优秀负担规定的变换器变化。在重负担，有山谷切换的批评传导模式(CCMVS)被采用认识到以便象进行的电磁的干扰(EMI)一样减少刺激电源损耗开关的软切换。在轻负担，变换器与山谷切换和适应离开时间控制(AOT)限制切换的频率值域，频数值域和maintain负担规定在不连续的传导模式(DCM)操作。在极其轻的负担或在待机模式，爆炸模式操作被采用通过减少两个都切换的频率和控制器的静态的力量驱散提供低动力消耗量。多模式控制被其脉搏持续时间被产量反馈调整的一个振荡器实现。切换的控制电路保证力量的最小的刺激电压落下得到的一条精确山谷切换。控制器IC的原型在一个1.5-μmBiCMOS过程被制作并且适用于310V/20V，90W回扫DC/DC变换器电路。试验性的结果证明所有期望的功能成功地被认识到。flyback变换器完成了从完整的负担的超过80%的效率击倒到2.5W的高度，与到达88.8%的最大值，当在待机模式的总功率消费是大约300mW时。

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