Institute Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Opt Lett. 2013 Jun 1;38(11):1826-8. doi: 10.1364/OL.38.001826.
We demonstrated a general approach for plasmonic sensing using metal single nanowires based on an evanescent coupling technique, where light was efficiently launched into and picked up from the metal nanowires using silica fiber tapers. A high amplitude sensitivity of ~13 dB to 1.2% hydrogen was obtained using palladium-coated Au nanowires for hydrogen sensing, and a fast response of ~5 ms was obtained using a polyacrylamide film-supported Ag nanowire for relative humidity sensing. Our results may help develop metal nanowire-based plasmonic sensors.
我们展示了一种基于消逝场耦合技术的使用金属单纳米线进行等离子体传感的通用方法，其中使用硅光纤锥形件将光有效地导入和提取出金属纳米线。对于钯涂覆的 Au 纳米线的氢传感，获得了约 13 dB 至 1.2%氢气的高幅度灵敏度，对于相对湿度传感，使用聚丙烯酰胺膜支撑的 Ag 纳米线获得了约 5 ms 的快速响应。我们的结果可能有助于开发基于金属纳米线的等离子体传感器。
