Patent ID: 8557622

Claim:
A method for forming a nanowire device comprising: providing a crystalline growth platform comprising at least an aluminum (Al)-containing epitaxial layer on a substrate; providing a protection layer on the crystalline growth platform; forming one or more nanoscale slit-shaped openings in a selective growth mask formed on the protection layer; locally removing the protection layer in an epitaxial growth apparatus in a vicinity of each nanoscale slit-shaped opening to expose a surface of the underlying crystalline growth platform; forming an in-plane nanowire by epitaxially growing a material from the exposed surface of the crystalline growth platform through each nanoscale slit-shaped opening, wherein a length of the nanowire is along a crystal direction of the underlying crystalline growth platform; epitaxially growing a core-shell structure from the formed in-plane nanowire using the in-plane nanowire as a core material; and oxidizing the Al-containing epitaxial layer of the crystalline growth platform to provide electrical isolation after the epitaxial growth.