Surface plasmon resonance (SPR) yog tshwm sim qhov twg cov electrons nyob rau hauv cov hlau txheej txheej zoo siab los ntawm photons ntawm teeb pom kev zoo nrog qee lub kaum sab xis ntawm qhov xwm txheej, thiab tom qab ntawd nthuav tawm mus rau qhov sib npaug. rau saum npoo hlau (Fig. 10.17; Zeng li al., 2017).
Dab tsi yog qhov plasmon txoj kev xav?
Nto plasmons yog nto electromagnetic nthwv dej uas nthuav tawm nyob rau hauv ib qho kev taw qhia thaum uas tig mus rau cov hlau / dielectric (los yog hlau / nqus tsev vacuum) interface. Los ntawm: Comprehensive Nanoscience thiab Technology, 2011.
Qhov cuam tshuam plasmon yog dab tsi?
Nto plasmon resonance (SPR) yog qhov tshwm sim ntawm cov nyhuv resonance vim yog kev cuam tshuam ntawm cov hluav taws xob hluav taws xob ntawm cov hlau nanoparticles nrog cov xwm txheej photonsKev sib cuam tshuam yog nyob ntawm qhov loj thiab cov duab ntawm cov hlau nanoparticles thiab ntawm qhov xwm thiab muaj pes tsawg leeg ntawm qhov nruab nrab dispersion.
nto plasmon ua haujlwm li cas?
SPR tshwm sim thaum lub teeb polarized ntaus ib qho hluav taws xob ua hluav taws xob ntawm qhov sib txuas ntawm ob qhov xov xwm. Qhov no generates electron charge density waves hu ua plasmons, txo qhov kev siv ntawm lub teeb pom kev ntawmib lub kaum ntse ntse hu ua lub resonance lub kaum ntse ntse, nyob rau hauv kev faib ua feem rau qhov loj ntawm lub sensor nto..
Plasmons tsim li cas?
Localize nto plasmons arise rau hauv me me metallic khoom, nrog rau nanoparticles Txij li thaum lub translational invariance ntawm lub system ploj lawm, ib tug piav qhia nyob rau hauv cov nqe lus ntawm wavevector, raws li nyob rau hauv SPPs, yuav tsis tau. ua. Tsis tas li ntawd tsis zoo li qhov kev sib txuas tsis tu ncua hauv SPPs, hom electromagnetic ntawm cov khoom yog discretized.
