| Time：1150304 (Wed.) 14:20~16:20 Speaker：Prof.許紘瑋 (Shiu, Hung-Wei) 國家同步輻射研究中心奈米科學小組/Nano Science Group, National Synchrotron Radiation Research Center Title：Nanoscale Spectromicroscopy at the New TPS 27A1 STXM: A Versatile Platform for Chemical and Magnetic Imaging Abstract： Scanning Transmission X-ray Microscopy (STXM) has become a vital tool for characterizing the physical and chemical properties of functional materials at the nanometer scale. This presentation introduces the newly commissioned STXM endstation at the TPS 27A1 beamline of the National Synchrotron Radiation Research Center (NSRRC). Optimized for the high-brilliance 3 GeV Taiwan Photon Source (TPS), this facility provides an extensive energy range from 90 to 3000 eV with a spectral resolving power exceeding 12,000. A key advantage of the TPS 27A1 STXM is its high mechanical and thermal stability, which ensures exceptional imaging fidelity and precision during complex measurements. The system is designed with a spacious sample region that offers significant physical clearance for experimental expansion. This flexibility makes the station an ideal platform for in-situ and in-operando studies, enabling the integration of auxiliary apparatus, such as environmental gas cells, liquid cells, or magnets, to monitor material evolution under real-world conditions. Unlike conventional X-ray Absorption Spectroscopy (XAS), which provides information averaged over the entire beam spot, STXM enables the visualization of localized chemical and electronic structure distributions. We demonstrate this capability through recent research highlights in electrocatalysis and energy storage materials, where resolving spatial heterogeneity is essential for explaining reaction mechanisms and performance variations. Finally, we showcase the station’s specialized capabilities in magnetism by discussing the imaging of complex magnetic domain textures in the 2D van der Waals ferromagnet Fe3GaTe2. By utilizing X-ray Magnetic Circular Dichroism (XMCD), the TPS 27A1 STXM successfully resolved fine magnetic structures, providing critical insights into the fundamental physics of low-dimensional magnetic systems. These examples underscore the capability of the TPS 27A1 STXM to address complex scientific questions at the intersection of fundamental physics and advanced materials science. Place：S101, Gongguan Campus, NTNU |
