Intrinsic Si nanowires were synthesized by catalytic vapor
liquidsolid chemical vapor deposition [36] for which a 2 nm
thick gold layer was deposited as catalyst on thermally oxidized Si
wafers. Hydrogen diluted silane gas (H2/SiH4: 170/30 sccm) in a
total pressure of 15 mbar was admitted as the precursor molecule
at 400 C. The diameter and length of asgrown nanowires were
~10e60 nm and ~5 mm, respectively