Vertical split-ring resonator based nanoplasmonic sensor
作者： Pin Chieh Wu , Greg Sun , Wei Ting Chen , Kuang-Yu Yang , Yao-Wei Huang
DOI: 10.1063/1.4891234
关键词: Surface plasmon resonance 、 Plasmon 、 Refractive index 、 Localized surface plasmon 、 Materials science 、 Optoelectronics 、 Optics 、 Nanosensor 、 Planar 、 Split-ring resonator 、 Resonator
摘要: Split-ring resonators (SRRs) have been the subject of investigation as plasmonic sensors that operate by sensing plasmon resonance shift δλ when exposed to a medium with refractive index change δn. However, conventional planar SRRs their fields spread into substrates, reducing accessible volume and its performance. Such limitation can be eradicated vertical in which localized SRR gaps are lifted off from substrate, allowing for greatly enhanced sensitivity. Here, we demonstrate highest sensitivity among reported SRR-based optical frequencies.
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