Plasmonic properties of supported Pt and Pd nanostructures.
The plasmonic properties of nanodisk arrays of Pt, Pd, and, for comparison, Ag are studied over a large size and spectral range and analyzed theoretically by an electrostatic model. Pt and Pd nanodisks exhibit broad localized surface plasmons with a higher sensitivity of the plasmon to the disk aspect ratio compared to Ag. Extinction cross-sections are generally about 50% smaller for Pt and Pd. The spectral plasmon positions, line-widths, and extinction cross-sections are well reproduced by the model.
Langhammer
Christoph
C
Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden. christoph.langhammer@fy.chalmers.se
Yuan
Zhe
Z
Zorić
Igor
I
Kasemo
Bengt
B
D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010165:Palladium / Q000032:analysis / Q000737:chemistry*; D010316:Particle Size; D010984:Platinum / Q000032:analysis / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
D010984:Platinum; D010165:Palladium