Metal nano-honeycomb fabricated by colloidal assembly and femtosecond-laser annealing

Tuo Qu; Fang Liu; Yuechai Lin; Yidong Huang

doi:10.1117/12.2508593

30 January 2019 Metal nano-honeycomb fabricated by colloidal assembly and femtosecond-laser annealing

Tuo Qu, Fang Liu, Yuechai Lin, Yidong Huang

Author Affiliations +

Proceedings Volume 10841, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Meta-Surface-Wave and Planar Optics; 108410A (2019) https://doi.org/10.1117/12.2508593
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

Bioinspired nanostructures have attracted increasing attentions and found widespread applications in various fields including material, chemical, mechanical and optical engineering because of their unparalleled physical advantages¹. Honeycomb, a kind of porous structure, owns unique structure features, which enable its properties of low density, high mechanical strength, and high-energy-storage capacity². The high quality of metal honeycomb structure with high uniformity, smooth metal surface, high-aspect-ratio sidewall and sharp corners of the triple junction is useful for plasmonic functional devices. Inspired by the building process of natural honeybee combs, we proposed an unconventional nanofabrication technique to produce high-quality gold nano-honeycombs with high-aspect-ratio (>10:1) and thin (<20 nm) sidewalls. As one of the important applications, the refractive index (RI) sensing behavior of the gold nano-honeycomb arrays was modeled and investigated numerically based on the surface plasmon polariton effect. The simulation results show that, in near-infrared region, the RI sensitivity is about 850 nm/RIU, which is approaching the theoretical limit³.

Citation Download Citation

Tuo Qu, Fang Liu, Yuechai Lin, and Yidong Huang "Metal nano-honeycomb fabricated by colloidal assembly and femtosecond-laser annealing", Proc. SPIE 10841, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Meta-Surface-Wave and Planar Optics, 108410A (30 January 2019); https://doi.org/10.1117/12.2508593

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