期刊
NANOTECHNOLOGY
卷 28, 期 26, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa7453
关键词
plasmonics; graphene; gold nanoparticals; infrared absorption
资金
- Hundred Talent Program of Chinese Academy of Sciences
- National Natural Science Foundation of China [11574349]
- Natural Science Foundation of Jiangsu province [BK20150365]
- Opened Fund of the State Key Laboratory of Optoelectronic Materials and Technologies
- Southwest University [SWU111010]
- A*STAR SERC Pharos grant [152700014]
- Young Talent Recruiting Plans of Xi'an Jiaotong University
- [R-263-000-B91-305]
Graphene plasmonics, with dynamic tunable resonance wavelength, has been successfully used in broadband plasmon-enhanced infrared spectroscopy. However, the requirement for external voltage loading makes the practical application sophisticated. In this work, the hybrid structure of graphene nanodot array (GNA) and gold nanoparticles (AuNPs) has been proposed as a passive platform for broadband infrared absorption enhancement. Numerical simulations show that the plasmon resonance peak of GNA becomes stiffer and broader when introducing AuNPs, and this is also proved by experimental results that the vibrational modes of polyethylene oxide molecule in a broad spectral range can be simultaneously enhanced. The metal-graphene hybrid plasmonic system has been proved to be a promising candidate for infrared sensing, which is significant for safety and healthy applications.
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