A centimeter-scale sub-10 nm gap plasmonic nanorod array film as a versatile platform for enhancing light-matter interactions

Nanoscale
Zhang-Kai ZhouXuehua Wang

Abstract

Strongly coupled plasmonic nanostructures with sub-10 nm gaps can enable intense electric field enhancements which greatly benefit the various light-matter interactions. From the point view of practical applications, such nanostructures should be of low-cost, facile fabrication and processing, large-scale with high-yield of the ultrasmall gaps, and easy for integration with other functional components. However, nowadays techniques for reliable fabrication of these nanostructures usually involve complex, time-consuming, and expensive lithography procedures, which are limited either by their low-throughput or the small areas obtained. On the other hand, so far most of the studies on the sub-10 nm gap nanostructures mainly focused on the surface-enhanced Raman scattering and high-harmonic generations, while leaving other nonlinear optical properties unexplored. In this work, using a scalable process without any lithography procedures, we demonstrated a centimeter-scale ordered plasmonic nanorod array film (PNRAF) with well-defined sub-10 nm interparticle gaps as a versatile platform for strongly enhanced light-matter interactions. Specifically, we showed that due to its plasmon-induced localized electromagnetic field enhancements,...Continue Reading

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Citations

Apr 2, 2016·Nanoscale Research Letters·Lingwei MaZhengjun Zhang
Apr 19, 2016·Biosensors & Bioelectronics·Xiaofan JiJunxue Fu
Dec 15, 2016·Advanced Materials·Jon W StewartMaiken H Mikkelsen
Sep 28, 2021·Chemical Reviews·Jiapeng ZhengJianfang Wang

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