Prof. Eason Yi-Sheng ChenSingapore
Nanyang Technological University
| 2024 to present | | Nanyang Assistant Professor (NAP), School of Materials Science and Engineering, Nanyang Technological University (NTU), Singapore |
| 2003 - 2007 | | Bachelor in Materials Science, National Tsing Hua University, Taiwan |
| 2007 - 2009 | | Master in Materials Science, National Tsing Hua University, Taiwan |
| 2014 - 2018 | | PhD in Materials, University of Oxford, United Kingdom |
| 2018 - 2024 | | Research Fellow, The University of Sydney, Australia |
| 2026 | | Early Career Leaders Professional Development Award, The Minerals, Metals, and Materials Society (TMS), USA |
| 2024 | | National Research Foundation (NRF) Fellow, Singapore |
| 2019 | | University of Sydney Fellow, Australia |
Atom probe tomography; Hydrogen embrittlement in metals and alloys; Metallurgy; Materials characterisation; Hydrogen energy
Eason is a Nanyang Assistant Professor and NRF Fellow at NTU Singapore’s School of Materials Science and Engineering. He also serves as a Subject Editor for the International Journal of Hydrogen Energy. His research specializes in hydrogen energy, metallurgy, and materials characterization. Utilizing atom probe tomography and electron microscopy, Eason establishes critical structure-property-processing relationships. He develops innovative workflows for microscopic observation under extreme conditions—including high loading, corrosion, radiation, and temperature fluctuations. These fundamental insights into material behavior are essential for advancing the next generation of high-performance materials and enhancing our understanding of how they function in challenging environments.
Atom probe tomography for observing hydrogen atoms in advanced alloys
TBA TBA
Advanced Analytical Technology/TBA
The presence of hydrogen in metallic materials can cause catastrophic early fracture, known as hydrogen embrittlement. Observing hydrogen and its associated influences in microstructure has been a grand challenge that has hindered the development of a solution to this problem. To this end, our research group has developed a specialised tool, cryogenic atom probe tomography (cryo-APT), for hydrogen mapping and has applied it in combination with a micromechanical approach to investigate hydrogen embrittlement in steels. Our efforts have led to new insights into the mechanisms of hydrogen trapping and embrittlement in steels, facilitating the development of steel microstructures with good resistance to hydrogen embrittlement.
References:
[1] Y.-S. Chen et al. "Hydrogen trapping and embrittlement in metals – A review." International Journal of Hydrogen Energy (2024). https://www.sciencedirect.com/science/article/pii/S0360319924013326
[2] Y.-S. Chen et al. "Observation of hydrogen trapping at dislocations, grain boundaries, and precipitates." Science (2020). https://www.science.org/doi/full/10.1126/science.aaz0122
[3] Y.-S. Chen et al. "Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel." Science (2017). https://www.science.org/doi/full/10.1126/science.aal2418
[4] P.-Y. Liu and Y.-S. Chen et al. "Engineering metal-carbide hydrogen traps in steels." Nature Communications (2024).
https://www.nature.com/articles/s41467-024-45017-4