High directivity optical antenna substrates for surface enhanced Raman scattering.

Wang, Dongxing; Zhu, Wenqi; Chu, Yizhuo; Crozier, Kenneth B · Adv Mater · 2012

basic_science · Level V

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Abstract

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.

Medical subject headings