Remote Giant Multispectral Plasmonic Shifts of Labile Hinged Nanorod Array via Magnetic Field

Nano Letters
R GeryakVladimir V Tsukruk

Abstract

We report a remotely mediated and fast responsive plasmonic-magnetic nanorod array with extremely large variability in optical appearance (up to 100 nm shifts in scattering maxima) and concurrently for multiple wavelengths in a broad range from UV-vis to near-infrared (at 450, 550, and 670 nm) with an external magnetic field with variable direction. The observed phenomenon demonstrates a rapid, wide-range response controlled via a noninvasive remote stimulus. The remotely controlled system suggested here is a magnetic field-directed assembly of an ordered monolayer array of unipolar oriented magnetic-plasmonic nickel-gold nanorods flexibly hinged to a sticky substrate. The unique geometry of the mobile nanorod array allows for the instant alteration of the surface plasmon polariton modes in the gold segment of the controllably tilting nanorods. This design demonstrates the utility of hybrid bimetallic nanoparticles and gives a novel approach to the design of fast-acting, remotely controlled color-changing nanomaterials for sensing and interfacial transport.

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Citations

Jan 27, 2016·ACS Applied Materials & Interfaces·Limei TianSrikanth Singamaneni
Feb 24, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Mario Zapata HerreraAndrei G Borisov
Sep 10, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Andrew WittmeierJohn G Gibbs
Feb 19, 2019·Advanced Materials·Zhiwei Li, Yadong Yin
Jul 28, 2019·Nano Letters·Duncan T L AlexanderVincenzo Amendola
Sep 30, 2017·Chemical Reviews·Nina JiangJianfang Wang
Sep 28, 2021·Chemical Reviews·Jiapeng ZhengJianfang Wang

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