Figure 6
From: Ultrafast lasers—reliable tools for advanced materials processing
(a) Schematic diagram of the concept employed to realize the formation of a narrow channel width far beyond the optical diffraction limit. (b) Cross-sectional SEM micrograph of a nanochannel fabricated in porous glass.37 Reproduced with permission from RSC. ©2013 by the Royal Society of Chemistry. SEM, scanning electron microscopy.
