Research Article

Nano Research

, Volume 3, Issue 7, pp 490-495

Open Access This content is freely available online to anyone, anywhere at any time.

Holed nanostructures formed by aluminum droplets on a GaAs substrate

  • Alvason Zhenhua LiAffiliated withInstitute of Nanoscale Science and Engineering, University of Arkansas Email author 
  • , Zhiming M. WangAffiliated withInstitute of Nanoscale Science and Engineering, University of Arkansas Email author 
  • , Jiang WuAffiliated withInstitute of Nanoscale Science and Engineering, University of Arkansas
  • , Gregory J. SalamoAffiliated withInstitute of Nanoscale Science and Engineering, University of Arkansas

Abstract

We have studied the morphology evolution of holed nanostructures formed by aluminum droplet epitaxy on a GaAs surface. Unique outer rings with concentric inner holed rings were observed. Further, an empirical equation to describe the size distribution of the outer rings in the holed nanostructures has been established. The contour line generated by the equation provides physical insights into quantum ring formation by droplets of group III materials on III–V substrates.
http://static-content.springer.com/image/art%3A10.1007%2Fs12274-010-0009-5/MediaObjects/12274_2010_9_Fig1_HTML.jpg

Keywords

Droplet epitaxy aluminum droplets MBE GaAs holed nanostructures