Schematic depiction of metal-assisted patterning of Ge surfaces in water. (a) Metals coated on a cantilever catalytically oxidize a Ge surface, the mechanism of which is the same as that shown in Figure 2a. (b) Surface areas in contact with the metal probe are removed continuously in water during the scans, owing to the soluble nature of GeO2.
Kawase et al. Nanoscale Research Letters 2013 8:151 doi:10.1186/1556-276X-8-151