Surface Plasmons for Gold Nanoparticles (Meaning More Conductivity)
Afshin Rashid
Abstract
Note: The interaction of gold nanoparticles with light is strongly determined by their environment, size and physical dimensions. The oscillating electric fields of a light beam emitted in the vicinity of a colloidal nanoparticle interfere with the free electrons and cause a coordinated oscillation of the electron charge that corresponds to the frequency of visible light. These resonant oscillations are known as surface plasmons. For small (30 nm) monodisperse gold nanoparticles, the phenomenon of surface plasmon resonance causes absorption of light in the blue-spectral part (~450 nm) while red light (~700 nm) is reflected.Gold is a soft and malleable metal with a bright and shiny yellow color that does not rust or darken in the vicinity of air and water. This metal can be found pure in nature in the form of grains or pieces among stones, minerals. Crystallized and alluvial deposits were found. The chemical symbol of this element, Au, is derived from its Latin name, aurum, which means "dawn glow". The value of gold is due to its rarity, easy application, easy purification, resistance to rust. Corrosion, distinctive color, non-reactivity with other elements, characteristics that are seen in few other metals. One gram of this element can be hammered to the size of a sheet with an area of one square meter.