He started electron microscopy in early 1990s. While he was conducting his PhD thesis work on rare earths-containing magnesium alloys, he encountered with fine complex intermetallic phases, so he used TEM as a major research method. From 1996 to 1997 he was at Okayama University of Science, Japan as a postdoctoral researcher to study electron microscopy with Professor H. Hashimoto. In 1998, he moved to materials science division, Argonne National Laboratory, as a visiting scholar and became the assistant scientist in 2001. Between 2001 and 2012, he worked as a TEM instrumental scientist at the Microscopy and Imaging Center at Texas A&M University, where he taught TEM courses and trained many TEM users. Dr. Luo has authored over 200 articles in peer-reviewed journals, and most of them involved TEM investigations.