Prof. Han Huang, School of Mechanical and Mining Engineering The University of Queensland St. Lucia, QLD 4072, Australia
Email: han.huang@uq.edu.au

Title

Deformation and removal of semiconductor and laser crystals at extremely small scales

Abstract

Semiconductor and laser single crystals often need to be machined into thin substrates with high quality and precision. Grinding is usually used to achieve the material removal and surface integrity, making the substrates ready for further polishing. Thus, improvement of the surface integrity of a ground substrate could shorten the subsequent polishing process, considerably reducing manufacturing cost. The development of cost-effective grinding technologies for those crystals requires in-depth understanding of their deformation and removal mechanisms at extremely small scales. In this keynote, the deformation and removal characteristics of semiconductor and laser single crystals under mechanical loading will be reviewed. The mechanisms associated with mechanical removal will be revealed with the aid of high resolution TEM analysis and the relationship between machining conditions and the removal behaviours will be explored. In particular, the grinding technologies for those single crystals developed based on the fundamental understanding will be suggested.

Biography

Professor Han Huang at The University of Queensland currently leads a group of researchers working on mechanical characterization of nanostructures and advanced manufacturing. He obtained his Bachelor and Master’s Degrees at Huazhong University of Science and Technology and PhD at The University of Western Australia. Prof Huang has published over 200 SCI journal papers, which attracts over 5,400 citations, leading to an h-index of 38. He has received a number of research accolades, including Australia Research Council Future Fellow, Australian Research Fellow and Queensland International Fellow, and won the prestigious Singapore National Technology Award. He has editorial roles in several international journals including Int. J. Machine Tool & Manufacture and is a steering member of several nanotechnology initiatives.