摘要
Self-assembled single-crystalline Si1−xGex nanorings (NRs), as small as 10 nm with narrow distributions of height and diameter, have been fabricated without any specific equipment. Compared to other approaches for nanofabricating the ring-like structures, the smallest Si1−xGexNRs with the highest density were obtained by the mediation of Au nanodots. The process promises the availability of Si1−xGex NRs with a wide range of Ge concentration and size, and can serve as a useful platform for the fundamental understanding and future practical applications of NR devices.