Kucherik A, Kutrovskaya S, Osipov A, Gerke M, Chestnov I, Arakelian S, Shalin A S, Evlyukhin A B, Kavokin A V
Department of Physics and applied mathematics, Stoletov Vladimir State University, 600000, Gor'kii street 87, Vladimir, Russia.
Westlake University, 18 Shilongshan Road, 310000, Cloud Town, Xihu District, Hangzhou, China.
Sci Rep. 2019 Jan 23;9(1):338. doi: 10.1038/s41598-018-36851-w.
We experimentally realize nano-antennas based on hybrid silicon-gold nanoparticles (NPs). The silicon particles covered by clusters of small metal NPs are fabricated from a liquid phase under the effect of the laser irradiation. The complex nanoclusters containing both Si and Au components provide the enhancement of the near-field intensity and the resonant light scattering associated with excitation of multipole resonances in NPs. A strong sensitivity of the resonant light absorption to the hybrid particle size and material parameters is experimentally documented and theoretically discussed. The results demonstrate a high potentiality of the hybrid NPs for the realization of functional optical devices and metasurfaces.
我们通过实验实现了基于硅-金混合纳米颗粒（NPs）的纳米天线。被小金属纳米颗粒簇覆盖的硅颗粒是在激光辐照作用下从液相中制备出来的。同时包含硅和金成分的复合纳米簇增强了与纳米颗粒中多极共振激发相关的近场强度和共振光散射。实验记录并从理论上讨论了共振光吸收对混合颗粒尺寸和材料参数的强烈敏感性。结果表明混合纳米颗粒在实现功能性光学器件和超表面方面具有很高的潜力。
