On July 20 and 29, the lecture series of "HUST-NUS Academic Lecture Series"of Materials Science and Engineering were successfully held. Upon the invitation of Professor Lu Xing from the School of Materials Science and Engineering, Associate Professor Lyu Jiong and Goki Eda from the Department of Chemistry, National University of Singapore (NUS) delivered a lecture entitled "Atomic-scale engineering of quantum materials" and "Quantum engineering of 2D materials for novel electronics and photonics" respectively. The lecture was hosted by Prof. Lu Xing and more than 50 students and researchers from School of Materials Science and Engineering and School of Chemistry and Chemical Engineering have attended the event online.

Prof. Lyu Jiong delivers the speech "Atomic-scale engineering of quantum materials"

In the lecture, Prof. Lyu introduced the work progress made by his team in the atomic engineering of quantum materials. First, the development history and working principle of STM and AFM nanotechnologies were described in detail, the significance of these two atomic-scale characterizations was highlighted, and the challenges facing the development of quantum materials were also pointed out. Based on these two technologies, Prof. Lyu's team has carried out atomically precise synthesis of organic quantum materials, such as various macrocyclic molecules in cooperation with other research groups. At the same time, his team has also realized quantum defect control of two-dimensional materials and atomic-level characterization of two-dimensional magnetic materials. Finally, a novel electrochemical exfoliation technique was used to achieve large-scale solution production of 2D superconductors, which creates favorable conditions for the printable fabrication of electronic devices.

Prof. Goki Eda delivers the speech "Quantum engineering of 2D materials for novel electronics and photonics"

Prof. Goki Eda gave a lecture about some progress made by his team in quantum defects of 2D semiconductors. Beginning with the application of atomic defects in optical instruments and quantum technology, he introduced the concept of quantum defects and their unique properties as well as their potential in quantum emitters. Then, some development and researches of atomic vacancies were briefly described. He mainly introduced the work on atomic impurities, that is, the doping of heterogeneous atoms. In addition, his team has also done the work to quantify ultradilute defects, using a combination of conductive AFM and STEM. This can help the researchers achieve accurate visualization of defects and impurities. Finally, the defect creation and defect characterization were summarized, which provide a good reference for the preparation of some high-end quantum devices.

Experts discuss with students and teachers

During the Q&A session, Professor Lyu Jiong and Goki Eda had a thorough exchange with participants like Professor Lu Xing from School of Materials Science and Engineering, HUST, discussing the details like the application of quantum technology in the three-dimensional materials, the means of quantum defect measurement, and how to control the amount of quantum defects, which provided new research ideas and directions for the study of quantum materials.

Introduction to Speakers

Dr. Lyu Jiong is an associate professor at Department of Chemistry and Institute for Functional Intelligent Materials at National University of Singapore (NUS). Dr. Lyu received his bachelor degree from Fudan University (China) in 2007 and Ph.D. degree from NUS in 2011. After that, he worked as a postdoc fellow in Graphene Research Centre at NUS, and then in Department of Physics, UC Berkeley. Dr. Lyu is a recipient of JMCA Emerging Investigators 2019, NUS Faculty of Science Young Scientist Award (2021) and NUS Young Researcher Award (2022). His current research interests include atomic-scale materials design and investigation of nanoscience in low-dimensional materials towards next-generation solid-state devices and atomically precise catalysis.

Before Dr. Eda joining NUS in 2011, he was a Newton International Fellow of the Royal Society of the UK and worked at Imperial College London. Dr. Eda received his M.Sc. in Materials Science and Engineering from Worcester Polytechnic Institute in 2006 and Ph.D. in the same discipline from Rutgers University in 2009. He is a recipient of the Singapore National Research Foundation (NRF) Research Fellowship and many awards including the Singapore National Academy of Science (SNAS) Young Scientist Award and University Young Researcher Award. He is an Associate Editor of npj 2D Materials and Applications. His research focuses on the electronic, photonic, and magnetic device physics of two-dimensional materials.