Integration of Gold Nanoparticles in Optical Resonators
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- 作者：Alberto Jim茅nez-Solano ; Carmen L贸pez-L贸pez ; Olalla S谩nchez-Sobrado ; Jos茅 Miguel Luque ; Mauricio E. Calvo ; Cristina Fern谩ndez-L贸pez ; Ana S谩nchez-Iglesias ; Luis M. Liz-Marz谩n ; Hern谩n M铆guez
- 刊名：Langmuir
- 出版年：2012
- 出版时间：June 19, 2012
- 年：2012
- 卷：28
- 期：24
- 页码：9161-9167
- 全文大小：436K
- 年卷期：v.28,no.24(June 19, 2012)
- ISSN：1520-5827
文摘
The optical absorption of one-dimensional photonic crystal based resonators containing different types of gold nanoparticles is controllably modified by means of the interplay between planar optical cavity modes and localized surface plasmons. Spin-casting of metal oxide nanoparticle suspensions was used to build multilayered photonic structures that host (silica-coated) gold nanorods and spheres. Strong reinforcement and depletion of the absorptance was observed at designed wavelength ranges, thus proving that our method provides a reliable means to modify the optical absorption originated at plasmonic resonances of particles of arbitrary shape and within a wide range of sizes. These observations are discussed on the basis of calculations of the spatial and spectral dependence of the optical field intensity within the multilayers.