NSRRC Activity Report 2022

Facts and Figures 123 Workshop II: Advanced Applications of Synchrotron Characterizations on Novel Energy Materials and Low- dimensional Semiconductors Synchrotron radiation-based X-ray techniques have significantly boosted the development of novel energy materials and low-dimensional semiconductors. This workshop was organized by Dr. Heng-Liang Wu, Dr. Yu-Lun Chueh, and Dr. Jan-Chi Yang (National Cheng Kung University, NCKU). State-of-the-art synchrotron technology and the development of novel materials, including halide perovskites, quantum dots, graphene, and the transition-metal dichalcogenide family for energy applications were demonstrated in this workshop. First, Dr. Cheng-Maw Cheng (NSRRC) delivered the opening remarks and introduced the multitechnique strategies of the NSRRC. The main purpose of the strategies is to establish the key technology and the R&D capabilities in many research fields such as biomedicine and energy. Prof. Jeng-Kuei Chang (NYCU) demonstrated transition-metal high-entropy oxides as an attractive class of anode materials in lithium-ion batteries. Furthermore, the reaction mechanism of an anode material was studied using in situ X-ray techniques in the NSRRC. Then, Prof. Di-Yan Wang (Tunghai University) developed new earth-abundant layered-structure 1T-molybdenum disulfide and iron pyrite-based materials as active catalysts for an electrochemical nitrogen-reduction reaction. Prof. Hsing-Yu Tuan (NTHU) presented high-performance potassium ion battery anodes. Prof. Chun-Hong Kuo (NYCU) introduced a rational design for the nanoarchitectures. The development of nanoarchitectonic engineering along with temporal probing by different synchrotron X-ray techniques were discussed. These novel materials were studied in detail using in situ X-ray techniques. Two speakers were invited to talk about low-dimensional semiconductors. Prof. Jung-Chun Andrew Huang (NCKU) introduced the development of 2D topological insulators including bismuthene/Bi 2 Se 3 . Prof. Yen-Lin Huang (NYCU) talked about the magnetoelectric switching mechanism in lanthanum-doped BiFeO 3 thin films. In the last session, Prof. Chang- Yang Kuo (NYCU) introduced a new computational code that can analyze soft X-ray absorption spectroscopy at the L-edge and Prof. Chao-Yao Yang (NYCU) reported an interesting spin-orbit torque ratchet involving the exchange spring effect in an IrMn/CoFeB bilayer device. In this workshop, users exchanged their experiences and suggestions for future research in cutting-edge science and industrial applications. The Annual Open House The annual Open House of the NSRRC was held on October 1. In total, 642 children and adults participated in the NSRRC Open House Day. This year, the Open House activities incorporated a facility tour with a scientific garden party. NSRRC scientists designed ten interactive game stations for the facility tour and hoped to overturn the stereotype of science being difficult to comprehend and to connect our daily life to science. Participants were able to catch a glimpse of the TPS’s vast experimental and accelerator facilities by walking inside its storage ring. Additionally, there was a scientific garden party on the campus of the NSRRC. “Chemistry on the Go” was provided by the Tamkang University Center for Science Education (TKUCSE). The Chemistry Van was transformed into an outdoor stage with the appearance of a chemistry laboratory on which a chemistry performance was presented. The Analytical Van was a chemistry laboratory in miniature. Students with fundamental knowledge in chemistry could learn to perform chemical experiments and analyze them. There was also a 3D Low-carbon Mobile Cinema, which was the first 3D mobile cinema in Taiwan, provided by the National Taiwan Science Education Center.