Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Palladium bridged gold nanocylinder dimer: plasmonic properties and hydrogen sensitivity

Not Accessible

Your library or personal account may give you access

Abstract

Plasmonic nanodimers facilitate electromagnetic hotspots at their gap junction. By loading these gap junctions with nanomaterials, the plasmonic properties of nanodimer can be varied. In this study, we bridged the gap junction of gold (Au) nanocylinder dimer with palladium (Pd), and numerically evaluated the plasmonic properties of the designed nanostructure. We simulated the far-field extinction spectra of Pd bridged Au nanocylinder dimer, and identified the dipole and quadrupole plasmon modes at 839 and 578 nm, respectively. By varying the geometrical parameters of the Pd bridge, we revealed the ability to tune the dipolar plasmon resonance of the bridged dimer. Further, we exploited the hydrogen sensitivity of Pd bridge to harness the bridged-Au dimer as nanoplasmonic hydrogen sensor. Such nano-optical detection platforms have minimal spatial footprint and can be further harnessed for chip-based plasmonic sensing.

©2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Sensitivity engineering in direct contact palladium-gold nano-sandwich hydrogen sensors [Invited]

Nikolai Strohfeldt, Jun Zhao, Andreas Tittl, and Harald Giessen
Opt. Mater. Express 5(11) 2525-2535 (2015)

Spectral shifts in optical nanoantenna-enhanced hydrogen sensors

Andreas Tittl, Christian Kremers, Jens Dorfmüller, Dmitry N. Chigrin, and Harald Giessen
Opt. Mater. Express 2(2) 111-118 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved