共振(粒子物理)
生物传感器
表面等离子共振
太赫兹辐射
作者
Yong Jin Zhou,Qiao Yu Li,Hanxi Zhao,Tie Jun Cui
标识
DOI:10.1002/admt.201900767
摘要
Abstract Fano resonance has received much attention in recent years due to its promising applications in surface enhanced phenomena, sensing, and nonlinear optics. However, it is challenging to achieve both high quality ( Q ) factor and high intensity using the Fano resonance. Different from active switching/tuning of plasmonic Fano resonances, gain‐assisted active spoof plasmonic Fano resonance is for the first time proposed to enhance both the Q factor and resonance intensity significantly, in which a subwavelength amplifier chip is incorporated into a passive plasmonic structure composed of two stacked corrugated metal rings. Experimental results show that the Q factor of the Fano resonance is increased from 49 to 2802, and the resonance intensity is improved from 19.89 to 37.42 dB. The high performance of the active plasmonic structure makes the limit of detection reach to 10 mg dL −1 , and thus the minute change of glucose aqueous solutions has been successfully detected.
科研通智能强力驱动
Strongly Powered by AbleSci AI