简介:一个理论模型被建议以便在s-SNOM学习配置回声。在样品和探查尖端之间的电磁的联合与伪静电的领域理论被描述。这个方法允许我们分析在探查尖端和样品之间的相互作用直觉地在s-SNOM唤起的configurational回声。为某个系统的反响的条件在一张明确的表格被介绍。在考虑样品偶极子和探查偶极子的实际尺寸的条件上,我们讨论为各种各样的材料样品认识到configurational回声的可能性。,数字结果显示绝缘的探查尖端的polarizability太小,不能引起这回声,表面电浆子回声出现在金属性的nanoparticles上,金属性的探查尖端的提高的polarizability保证完成回声的要求。CLC数字TH742这个工作被中国的国家自然科学基础在资助号码下面支持30170276。
简介:Asurfaceplasmonresonance(SPR)sensorbasedonamulti-corephotoniccrystalfiber(PCF)ispresentedinthispaper.ThereisonlyoneanalytechannelpositionedinthecenterofthePCFcrosssection,ratherthanseveralcloselyarrangedanalytechannelsaroundthecentralcore.Sothedesignofthissensornotonlyreducestheconsumptionofgoldandsamples,butalsoeffectivelyavoidstheinterferencebetweenneighboringanalytechannels.Opticalfielddistributionsofthisfiberatdifferentwavelengthsandthesensingpropertiesofthissensoraretheoreticallyanalyzedanddiscussedusingfiniteelementmethod(FEM).Simulationresultsconfirmthatboththethicknessofmetalliclayerandthefiberstructuralparametershavesignificanteffectonsensingperformance.Theamplitudesensitivityofthesensorisfoundtobe1.74×10-5RIU,andthespectralsensitivityis3300nm/RIU,correspondingtoaresolutionof3.03×10-5RIU.Finally,inordertoachievePCF-SPRsensingcharacteristics,anexperimentdesignschemebasedonspectroscopicdetectionmethodisproposed.
简介:新防护材料成为了一种选择到传统的金属从电磁的干扰防护盒子。这篇文章介绍传播线方法的理论学习用材料的一个新种类做的盾盒子,然后扩展基本公式与任意的角度处理多重洞和极化的诉讼。借助于基因算法在三个维的模拟工具的帮助下,在围场抑制电磁的回声被研究。计算显示在反响的频率下面,电磁的回声导致低、平否定防护系数;而为一样的区域,防护一个单个洞的有效性比多重洞的更坏。当时,防护系数变化极化角度增加,和通过有到薄电线的长方面平行的矩形的孔的联合领域与对薄电线垂直的长方面是比那弱得多的。由在洞的内部表面上使用优化计算的金属性损失的绝缘的层,回声抑制的最好的结果与涂层的一样的厚度被认识到。根据计算结果,最后,为防护的建议被建议。
简介:Inthispaper,aplasmonicsrefractiveindexsensorwiththesemiring-stubsystemcoupledtoabuswaveguideispro-posed.Thestructurecanachievewavelengthbandtunableandultra-sharpFanoresonance.Thecouplingmechanismbetweenthebrightmodeanddarkmodeisinvestigatedindetail,andapparentplasmoninducedtransparency(PIT)isrealizedontheresonancewavelength.Thefullwidthathalfmaximum(FWHM)oftheresonantwavelengthismodulatedbyadjustingthecoupleddistance.Thesensitivityandfigureofmerit(FOM)oftheproposedsensor'canreachupto600nm/RIUand120onthevisibleregion,respectively,andthisperformancecanbehelpfulfordesigningthephotonicintegratedcircuitandopticalcommunication,inaddition,itcanbeappliedforbio-sensing.
简介:Inthispaper,elitistreconstructiongeneticalgorithm(ERGA)basedonMarkovrandomfield(MRF)isintroducedforimagesegmentation.Inthisalgorithm,apopulationofpossiblesolutionsismaintainedateverygeneration,andforeachsolutionafitnessvalueiscalculatedaccordingtoafitnessfunction,whichisconstructedbasedontheMRFpotentialfunctionaccordingtoMetropolisfunctionandBayesianframework.Aftertheimprovedselection,crossoverandmutation,anelitistindividualisrestructuredbasedonthestrategyofrestructuringelitist.ThisprocedureisprocessedtoselectthelocationthatdenotesthelargestMRFpotentialfunctionvalueinthesamelocationofallindividuals.Thealgorithmisstoppedwhenthechangeoffitnessfunctionsbetweentwosequentgenerationsislessthanaspecifiedvalue.Experimentsshowthattheperformanceofthehybridalgorithmisbetterthanthatofsometraditionalalgorithms.
简介:Mesoscopic抑制了联合的相互的电容两倍回声电路被抑制泛音振荡器量子化的方法使量子化。Hamiltonian是由单一的转变的方法的diagonalized。这个电路的精力系列被给。费用的量变化和每个环的电流被thermofield动力学(TFD)的方法处于热刺激状态,热挤压的真空状态,热真空状态和真空状态调查。费用和水流的量变化与不仅电路有关是固有的参数并且联合刺激,挤压的系数,挤压的角度和环境温度的大小,而且量数字,这被显示出。并且量变化与时间随温度和腐烂的增加增加。CLC数字TN401由山东省,中国(No.XY05WL01)和大学的Heze大学的自然科学基础支持了山东省的试验性的技术基础,中国(No.S04W138)