Silver nanoclusters formation by using thermal annealing on porous GaAs

Recent advances in nanotechnology that allow metal structures to be built at a nanometer scale have expedited the implementation of the surface-plasmon (SP) resonance effect which effect concentrates and guides light into structures that are smaller than the wavelength of the propagating light. The numerous researchers have successfully shown that the wavelength at which the extinction reaches its maximum can be selectively tuned by adjusting the metal particle size, shape, volume fraction, interparticle distance, and the dielectric properties of the metal as well as that of the surrounding medium [1].