基于單劈裂環(huán)-雙劈裂盤結(jié)構(gòu)的多重磁Fano共振(英文)
發(fā)布時(shí)間:2023-04-08 00:28
采用有限元方法對(duì)單劈裂環(huán)-雙劈裂盤納米結(jié)構(gòu)的表面等離激元共振進(jìn)行了理論研究.當(dāng)入射光垂直于結(jié)構(gòu)表面時(shí),亮磁模式和暗磁模式相互干涉會(huì)產(chǎn)生磁Fano共振.當(dāng)雙劈裂盤、空腔和單劈裂環(huán)的間隙同時(shí)沿x軸負(fù)方向偏移時(shí),可產(chǎn)生高階磁模式和雙重磁Fano共振.在此結(jié)構(gòu)的基礎(chǔ)上,進(jìn)一步調(diào)節(jié)單劈裂環(huán)的間隙寬度,可以在近紅外區(qū)域增強(qiáng)磁模式的強(qiáng)度,并產(chǎn)生三重磁Fano共振;同樣地,通過(guò)調(diào)節(jié)雙劈裂盤的上劈裂角,在可見(jiàn)光區(qū)域可得到新的高階磁模式,并產(chǎn)生三重磁Fano共振.此外,該結(jié)構(gòu)的最大靈敏度和磁場(chǎng)增強(qiáng)分別達(dá)到1 400nm/RIU和69.7倍.這些光學(xué)特性使得該結(jié)構(gòu)在超靈敏度生物傳感器和多控磁Fano開(kāi)關(guān)領(lǐng)域具有潛在的應(yīng)用價(jià)值.
【文章頁(yè)數(shù)】:9 頁(yè)
【文章目錄】:
0 Introduction
1 Structure model and simulation method
2 Results and discussion
2.1 The spectral properties of the SSR-DSD nanostructure
2.2 Breaking the symmetry of the structure
2.3 Increasing the gap width of the single-split ring
2.4 Increasing the upper split angle of the double-split disk
3 Conclusion
本文編號(hào):3785634
【文章頁(yè)數(shù)】:9 頁(yè)
【文章目錄】:
0 Introduction
1 Structure model and simulation method
2 Results and discussion
2.1 The spectral properties of the SSR-DSD nanostructure
2.2 Breaking the symmetry of the structure
2.3 Increasing the gap width of the single-split ring
2.4 Increasing the upper split angle of the double-split disk
3 Conclusion
本文編號(hào):3785634
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