Stability, size and optical properties of colloidal silver nanoparticles prepared by electrical arc discharge in waterA. A. Ashkarran, A. Iraji zad, M. M. Ahadian and M. R. Hormozi NezhadEur. Phys. J. Appl. Phys., 48 1 (2009) 10601DOI: https://doi.org/10.1051/epjap/2009113