期刊
SENSORS
卷 18, 期 7, 页码 -出版社
MDPI
DOI: 10.3390/s18072098
关键词
SPR biosensor; long-range surface plasmon resonance; Ga-doped zinc oxide
资金
- National Natural Science Foundation of China [61505111, 11704259, 11604216]
- China Postdoctoral Science Foundation [2017M622746]
Transparent conducting oxides (TCOs) have appeared in the past few years as potential plasmonic materials for the development of optical devices in the near infrared regime (NIR). However, the performance of biosensors with TCOs has been limited in sensitivity and figure of merit (FOM). To improve the performance of the biosensors with TCOs, a biosensor based on long-range surface plasmon with Ga-doped zinc oxide (GZO) is proposed. It is shown that a larger FOM with a 2 similar to 7 times enhancement compared to the traditional surface plasmon polaritons (SPPs) sensor and higher detection accuracy (DA) can be realized in our proposed sensor compared with the surface plasmon resonance (SPR) sensor with GZO. Therefore, this sensor can be used to detect biological activity or chemical reactions in the near infrared region.
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