Plenary Speakers for OGC 2022

Min Gu
University of Shanghai for Science & Technology, China

Professor Gu is Executive Chancellor and Distinguished Professor of University of Shanghai for Science and Technology. He was Distinguished Professor and Associate Deputy Vice-Chancellor at RMIT University, and a Laureate Fellow of the Australian Research Council, Pro Vice-Chancellor, and a University Distinguished Professor at Swinburne University of Technology. He is an author of four standard reference books and has over 550 publications in nano/biophotonics. He is an elected Fellow of the Australian Academy of Science and the Australian Academy of Technological Sciences and Engineering as well as Foreign Fellow of the Chinese Academy of Engineering. He is also an elected fellow of SPIE, Optica, IEEE, AIP, InstP and COS. He was President of the International Society of Optics within Life Sciences, Vice President of the Board of the International Commission for Optics (ICO) (Chair of the ICO Prize Committee) and a Director of the Board of Optica (formerly OSA) (Chair of the International Council). He was awarded the Einstein Professorship, the W. H. (Beattie) Steel Medal, the Ian Wark Medal, the Boas Medal and the Victoria Prize. Professor Gu is a winner of the 2019 Dennis Gabor Award (SPIE) and the 2022 Emmett Norman Leith Medal (Optica)

Speech Title: Optoelectronics for Artificial Intelligence

Abstract: Research in optoelectronics has transformed the society in every sector of our life due to the emerging capability of the nanoscale manipulation of light in multiple physical dimensions. On the other hand, artificial intelligence based on ever-increasing computing power including neuromorphic computing has heralded a disruptive horizon in many ways of our life. Further, nano-optoelectronics including superresolution optics has provided various tools that can access the nanoscale sub-cellular studies, leading to an opportunity for the understanding of brain functionality. Thus a cross-dispensary field that integrates those exciting advancement for artificial intelligence photonics has come to age. In this talk, we will present two focused areas, superresolution nanolithography and optically digitalised holography for the development of optical artificial neural networks.

Henry Chapman

The University of Hamburg, Germany

Henry Chapman FRS is a director of the Center for Free-Electron Laser Science at the Deutsches Elektronen-Synchrotron and the University of Hamburg in Germany. He carried out his PhD in X-ray optics at The University of Melbourne, Australia, work for which he was awarded the Bragg Gold Medal from the Australian Institute of Physics. Henry develops methods in coherent X-ray imaging and in exploiting the short pulse durations and extreme intensities of free-electron lasers to obtain room-temperature macromolecular structures. He is currently developing serial femtosecond crystallography using FEL and synchrotron radiation and extending it to the smallest possible crystals: that is, single molecules. For this work he was awarded the Leibniz Prize of the German Research Foundation (DFG), the Roentgen Medal, an honorary doctorate of Uppsala University, and the Aminoff Prize for crystallography from the Royal Swedish Academy of Sciences.

Speech Title: Imaging Macromolecules with X-ray Laser Pulses

Abstract: Free-electron lasers produce spatially coherent X-ray pulses with a peak brightness more than a billion times that of beams at modern synchrotron radiation facilities. This has provided a disruptive new technology, in several senses of the word. A single focused X-ray FEL pulse completely destroys a small protein crystal placed in the beam, but not before that pulse has passed through the sample and given rise to a diffraction pattern. This principle of diffraction before destruction has given the methodology of serial femtosecond crystallography for the determination of macromolecular structures from tiny crystals without the need for cryogenic cooling. Consequently, it is possible to carry out high-resolution diffraction studies of dynamic protein systems with time resolutions ranging from below 1 ps to milliseconds, from samples under physiological temperatures and other conditions. The high intensity and coherence of the X-ray beam can also be exploited for novel phasing approaches, ranging from preferential ionisation of elements to the use of intensity measurements between Bragg peaks. Even now, a decade after the first experiments at X-ray free-electron laseres we have not fully explored the limits of the technique.