Gold nanoparticle mediated graphene plasmon for broadband enhanced infrared spectroscopy

Nanotechnology
Lilan PengKai Zhang

Abstract

Graphene plasmonics, with dynamic tunable resonance wavelength, has been successfully used in broadband plasmon-enhanced infrared spectroscopy. However, the requirement for external voltage loading makes the practical application sophisticated. In this work, the hybrid structure of graphene nanodot array (GNA) and gold nanoparticles (AuNPs) has been proposed as a passive platform for broadband infrared absorption enhancement. Numerical simulations show that the plasmon resonance peak of GNA becomes stiffer and broader when introducing AuNPs, and this is also proved by experimental results that the vibrational modes of polyethylene oxide molecule in a broad spectral range can be simultaneously enhanced. The metal-graphene hybrid plasmonic system has been proved to be a promising candidate for infrared sensing, which is significant for safety and healthy applications.

References

Jun 11, 2011·Science·Ashkan Vakil, Nader Engheta
Jul 20, 2011·Nano Letters·Frank H L KoppensF Javier García de Abajo
Sep 6, 2011·Nature Nanotechnology·Long JuFeng Wang
Apr 24, 2012·Nature Nanotechnology·Hugen YanFengnian Xia
Jun 23, 2012·Nature·Jianing ChenFrank H L Koppens
Feb 18, 2014·Nano Letters·Yilei LiPhaedon Avouris
Jul 15, 2015·Science·Daniel RodrigoHatice Altug
Sep 10, 2015·Advanced Materials·Shuwen ZengKen-Tye Yong

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