Open AccessFabrication and optical properties of Au nanoparticle array
Author(s) -
Kai Wang,
Guang Yang,
Hua Long,
Yuhua Li,
Nengli Dai,
Peixiang Lu
Publication year - 2008
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.57.3862
Subject(s) - discrete dipole approximation , materials science , nanosphere lithography , nanoparticle , prism , absorption (acoustics) , surface plasmon resonance , deposition (geology) , fabrication , optics , absorption spectroscopy , quartz , lithography , scanning electron microscope , optoelectronics , nanotechnology , physics , scattering , medicine , paleontology , alternative medicine , pathology , sediment , composite material , biology
Using nanosphere lithography and pulsed laser deposition, Au nanoparticles with different height have been fabricated on quartz substrates. The surface images of Au particles were observed by scanning electron microscopy, and the results showed that the prism-shaped Au particles form a periodical array. In the U-V-visible absorption spectrum, strong absorption peaks due to the surface plasmon resonance of Au nanoparticles were observed. Furthermore, theoretical calculation based on the discrete dipole approximation was performed. The experimental and theoretical results show that the absorption peaks of the Au nanoprism shifted to the blue side as the out-of-plane height increases.