2009/07/15 by Dwayne A. Bobb, D. A. Bobb, Guohua Zhu +8 · 102 citations
Engineering · Materials Science · Physics and Astronomy · #Alloy #Atom (system on chip) #Cadmium #Composite material #Electron #Free electron model #Gold and Silver Nanoparticles Synthesis and Applications #Materials science #Metal #Metallurgy #Metamaterial #Nanotechnology #Noble metal #Optics #Optoelectronics #Photonic Crystals and Applications #Photonic metamaterial #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Range (aeronautics) #Wavelength #physics.flu-dyn #physics.optics
paper · pdf · doi:10.1063/1.3237179
published in Applied Physics Letters 95(15) (American Institute of Physics) · 14 Pages, 4 figures
arxiv created 2009/07/15 · openalex publication_date 2009/10/12 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have shown that alloying a noble metal (gold) with another metal (cadmium), which can contribute two electrons per atom to a free electron gas, can significantly improve the metal’s optical properties in certain wavelength ranges and make them worse in the other parts of the spectrum. In particular, in the gold-cadmium alloy we have demonstrated a significant expansion of the spectral range of metallic reflectance to shorter wavelengths. The experimental results and the predictions of the first principles theory demonstrate an opportunity for the improvement and optimization of low-loss metals for nanoplasmonic and metamaterials applications.