Multicolored vertical silicon nanowires.

Ultrahigh-density silicon nanobridges formed between two vertical silicon surfaces

We report simultaneous lateral growth of a high density of highly oriented, metal-catalyzed silicon nanowires on a patterned silicon substrate and bridging of nanowires between two vertical silicon sidewalls, which can be developed into electrodes of an electronic device. After angled deposition of catalytic metal nanoparticles on one of two opposing vertical silicon surfaces, we used a metal-c...

Fabrication of vertically stacked single-crystalline Si nanowires using self-limiting oxidation.

A simple method for fabricating vertically stacked single-crystal silicon nanowires on standard bulk silicon wafers is presented. The process uses inductively coupled plasma (ICP) etching to create silicon fins with uneven yet controllable vertical profiles. The fins are then thermally oxidized in a self-limiting process, and the narrow regions are completely consumed to create multiple nanowir...

Sub-15 nm gate-all-around field effect transistors on vertical silicon nanowires

Suppression of three dimensional twinning for a 100% yield of vertical GaAs nanowires on silicon.

Multiple seed formation by three-dimensional twinning at the initial stages of growth explains the manifold of orientations found when self-catalyzed GaAs nanowires grow on silicon. This mechanism can be tuned as a function of the growth conditions by changing the relative size between the GaAs seed and the Ga droplet. We demonstrate how growing under high V/III ratio results in a 100% yield of...

Area Effect of Reflectance in Silicon ‎Nanowires Grown by Electroless Etching

This paper shows that the reflectance in silicon nanowires (SiNWs) can be optimized as a function of the area of silicon substrate where the nanostructure growth. SiNWs were fabricated over four different areas of silicon substrates to study the size effects using electroless etching technique. Three different etching solution concentrations of silver nitrate (AgNO3) and hydroflu...