Vapor-solid-solid radial growth of Ge nanowires

Abstract

The radial growth of Ge nanowire via chemical vapor deposition is discussed in detail. Vapor-solid-solid (VSS) growth mechanism is believed to dominate the nanowire growth in radial direction, which contributes to the increase of the diameter of nanowire. After the Au catalysts on the tip are consumed for a long growth time, the nanowire with a rough surface will be grown due to the selective VSS radial growth.