Advanced Materials, Vol.16, No.16, 1408-1408, 2004
Second harmonic generation from coupled surface-plasmon resonances in self-assembled gold-nanoparticle monolayers coated with an aminosilane
A uniform, monolayer-thick array of Au nanoparticles are produced on an aminopropylthrimethoxysilane-modified glass substrate by simple immersion of the substrate in the sol for 1 h (see AFM image, Figure). Longer immersion causes the nanoparticles to form colloidal domain structures, which induce a second-order polarization of light.