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High Directivity Optical Antenna Substrates for Surface Enhanced Raman Scattering
Author(s) -
Wang Dongxing,
Zhu Wenqi,
Chu Yizhuo,
Crozier Kenneth B.
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201201625
Subject(s) - materials science , directivity , raman scattering , strips , antenna (radio) , scattering , optics , optoelectronics , raman spectroscopy , surface (topology) , nanotechnology , computer science , telecommunications , physics , composite material , geometry , mathematics
A two‐dimensional array of gold optical antennas integrated with a one‐dimensional array of gold strips and mirrors is introduced and fabricated. The experimental results show that this design achieves average surface‐enhanced Raman scattering (SERS) enhancement factors as high as 1.2 × 10 10 , which is more than two orders of magnitude larger than optical antennas without the gold strips and gold mirror.