Plasmonic activity of large-area gold nanodot arrays on arbitrary substrates.
Highly efficient fabrication of well-ordered, embedded gold nanodot matrices using diffraction mask projection laser ablation is demonstrated. These gold nanodot arrays are ideally generated onto sapphire substrates but do also form onto AlO(x) thin films, enabling the application to arbitrary bulk substrates. Well-ordered gold dots become embedded into the Al(2)O(3) substrate during the process, thus improving their mechanical stability, chemical inertness, and technological compliance. Such substrates may be useful, for example, to enhance solar-cell efficiency by surface plasmons or as convenient, biocompatible focusing elements in nearfield optical tweezers.
Mäder
Marisa
M
Leibniz Institute of Surface Modification, Permoserstrasse 15, Leipzig, Germany.
Höche
Thomas
T
Gerlach
Jürgen W
JW
Perlt
Susanne
S
Dorfmüller
Jens
J
Saliba
Michael
M
Vogelgesang
Ralf
R
Kern
Klaus
K
Rauschenbach
Bernd
B
D000537:Aluminum Oxide / Q000737:chemistry; D001672:Biocompatible Materials / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods; D006046:Gold / Q000737:chemistry*; D007834:Lasers; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission / Q000379:methods; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D052898:Optical Tweezers; D013314:Stress, Mechanical; D013499:Surface Properties
D001672:Biocompatible Materials; D006046:Gold; D000537:Aluminum Oxide