Figure 3.

a Typical image of Si-based nanostructures prepared by laser plasma-assisted treatment of a Si wafer; b Photoluminescence spectra from laser plasma-treated nanostructured Si spots for different pumping wavelengths (325 and 488 nm)

Kabashin et al. Nanoscale Research Letters 2010 5:454-463   doi:10.1007/s11671-010-9543-z