Magnesium as novel material for active plasmonics in the visible wavelength range

Publikationstyp
Journal Article
Date Issued
2015-08-27
Sprache
English
Author(s)
Sterl, Florian
Strohfeldt, Nikolai
Walter, Ramon
Griessen, Ronald
Tittl, Andreas  
Giessen, Harald
TORE-URI
https://hdl.handle.net/11420/62401
Journal
Nano letters  
Volume
15
Issue
12
Start Page
7949
End Page
7955
Citation
Nano Letters 15 (12): 7949-7955 (2015)
Publisher DOI
10.1021/acs.nanolett.5b03029
Scopus ID
2-s2.0-84947741325
Publisher
American Chemical Society
Investigating new materials plays an important role for advancing the field of nanoplasmonics. In this work, we fabricate nanodisks from magnesium and demonstrate tuning of their plasmon resonance throughout the whole visible wavelength range by changing the disk diameter. Furthermore, we employ a catalytic palladium cap layer to transform the metallic Mg particles into dielectric MgH₂ particles when exposed to hydrogen gas. We prove that this transition can be reversed in the presence of oxygen. This yields plasmonic nanostructures with an extinction spectrum that can be repeatedly switched on or off or kept at any intermediate state, offering new perspectives for active plasmonic metamaterials.
Subjects
active plasmonics
chemical reaction sensing
hydrogen loading
Magnesium
nanochemistry
nanofabrication
nanooptics
DDC Class
600: Technology