11 Extraction of Material Parameters文稿

《11 Extraction of Material Parameters文稿》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、FilippoCapolino/TheoryandPhenomenaofMetamaterials_CFinalsPage--#11OntheExtractionofLocalMaterialParametersofMetamaterialsfromExperimentalorSimulatedData.Introduction.........................................-.BlochMaterialParametersImpedance:LorentzMaterialParametersan

2、dWaveImpedance...........-.DirectRetrievalofEffectiveMaterialParameters.....-.BlochLattices........................................-.NonlocalityofBloch’sMaterialParameters...........-.HowtoDistinguishBlochLattices?...................-.ExtractionofLorentz’sMateria

3、lParameters..........-ConstantinR.Simovski.Discussion...........................................-HelsinkiUniversityofTechnologyReferences.................................................-11.1IntroductionCorrectextractionofeffectivematerialparameters(EMP)ofametamaterial(MTM)layer

4、formedbyopticallysmallresonantparticlesembeddedinadielectricmatrixfromtheexperimentaldataornumericalsimulationsisveryimportantforthedesignandoptimizationofMTM.ForMTMperformedasregularlattices∗itisusuallydoneintermsoftheplane-wavereflection(R)andtrans-mission(T)coefficientsofthelayer.Thisisprob

5、ablyanoptimalwaytofindtheEMPofthecompositemediumwithregularinnerstructureifthelayercomprisestheintegernumberofthelatticeunitcells.ToretrieveEMPthroughexactplane-wavesimulationsoftheregularlayerismuchmoreaccu-ratethanthroughapproximateanalyticalcalculationsinvolvingelectricandmagneticpolarizabi

6、litiesofindividualparticles,mixingrules,orotherapproximatealgorithmsofaveraging.ItisnotsimpletocalculateEMPexactlyusingtheirdefinitions,thatis,throughaccuratenumericalaveragingofnumericallysimulatedmicroscopicfieldsandmicroscopicpolarizations.Inspiteofhugecomputa-tioneffortsandtimeexpenses,the

7、researcherencounterstheproblemofartificialmagnetism.Thisphenomenoninlatticesofcomplexscattererscannotbeproperlyrevealedusingsimpleaveragingandrequiresspecialproceduresthatwouldtakeintoaccountthepeculiaritiesofthedistributionofthemicrosc