期刊
OPTICS EXPRESS
卷 21, 期 13, 页码 15308-15313出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.015308
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资金
- National Science Foundation (NSF) through the Emerging Frontiers in Research and Innovation (EFRI) program [1240488]
- School of Electrical Engineering and Computer Science at Oregon State University
- Directorate For Engineering
- Emerging Frontiers & Multidisciplinary Activities [1240488] Funding Source: National Science Foundation
Diatoms are single-celled algaes that make photonic-crystal-like silica shells or frustules with hierarchical micro- & nano-scale features consisting of two-dimensional periodic pores. This article reports the use of diatom frustules as an integration platform to enhance localized surface plasmon resonances of self-assembled silver nanoparticles (NPs) on the surface of diatom frustules. Theoretical and experimental results show enhanced localized surface plasmons due to the coupling with the guided-mode resonances of the frustules. We observed 2 x stronger optical extinction and over 4 x higher sensitivity of surface-enhanced Raman scattering of Rhodmine 6G from the NPs-on-diatom than the NPs-on-glass structure. (C) 2013 Optical Society of America
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