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Dr Yi-Sheng (Eason) Chen

Position
Sydney Research Fellow

Contact
Email:
Ph: + 61 2 8627 6898
Fax: + 61 2 9351 7682

Qualifications
DPhil in Materials Science, 2018, University of Oxford, UK
MSc in Materials Science, 2009, National Tsing Hua University, Taiwan
BSc in Materials Science, 2007, National Tsing Hua University, Taiwan

Background
After finishing his master study in ceramic powder processing for electronic capacitor application with Prof. Jau-Ho Jean, Eason worked in consulting business for many years before going back to pursue his research career in Academia Sinica Taiwan with Prof. Ing-Shouh Hwang in 2013. He learned the fundamental of field emission science there and then moved on to his doctoral research at University of Oxford with Prof. Michael Moody in 2014. He is now a postdoctoral research associate in both Australian Centre for Microscopy and Microanalysis (ACMM) and School of Aerospace, Mechanical and Mechatronic Engineering (AMME) of the University of Sydney since 2018.

Research Project
Eason has specialty in using atom probe tomography (APT) to observe hydrogen in materials, particularly steels which are suffered from the catastrophic consequence of hydrogen attack known as hydrogen embrittlement. Through his PhD project, he (co-)developed the cryogenic APT sample transfer facilities that critically enable the hydrogen observation which used to be difficult due to the signal loss of the highly mobile hydrogen in room-temperature transfer process. As an extension of PhD research, he is now applying this technique in industrial high-strength alloys for further understanding of the effect and mitigation strategy of hydrogen embrittlement in practical applications, whilst establishing a transferable protocol to combine this specialty with other material topics such as catalyst.


Publications

  • Y-S Chen, D Haley, SSA Gerstl, AJ London, F Sweeney, RA Wepf, WM Rainforth, PAJ Bagot, MP Moody (2018) 'Direct observation of individual hydrogen atoms at trapping sites in a ferritic steel' Science, 355(6330), 1196-1199
  • O Barrera, D Bombac, Y-S Chen, TD Daff, E Galindo-Nava, P Gong, D Haley, R Horton, I Katzarov, JR Kermode, C Liverani, M Stopher, F Sweeney (2018) ‘Understanding and mitigating hydrogen embrittlement of steels: a review of experimental, modelling and design progress from atomistic to continuum’ Journal of Materials Science, 53(9), 6251–6290
  • Y-S Chen, H Lambert (2017) ‘Hydrogen transport and trapping: from quantum effects to alloy design: discussion’ Philosophical Transactions A, 357(2098), 20170031
  • H Lambert, Y-S Chen (2017) ‘Hydrogen embrittlement: future directions-discussion’ Philosophical Transactions A, 357(2098), 20170029
  • Y-S Chen, D Haley, PAJ Bagot, MP Moody (2017) ‘Simplifying observation of hydrogen trapping in atom probe tomography’
  • SSA Gerstl, S Tacke, Y-S Chen, J Wagner, RA Wepf (2017) ‘Enabling Atom Probe Analyses of New Materials Classes with Vacuum-Cryo-Transfer Capabilities’ Microscopy and Microanalysis, 23(S1), 612-613
  • C-Y Lin, W-T Chang, Y-S Chen, E-T Hwu, C-S Chang, I-S Hwang, W-H Hsu (2016) ‘Low-kilovolt coherent electron diffractive imaging instrument based on a single-atom electron source’ Journal of Vacuum Science & Technology A, 34(2), 021602
  • C-Y Lin, I-S Hwang, W-T Chang, W-H Hsu, M-T Chang, Y-S Chen, T-T Tsong (2013) ‘Low-Energy Electron Diffractive Imaging Based on a Single-Atom Electron Source’ Microscopy and Microanalysis, 19(S2), 376-377
  • Y-S Chen (2009) ‘Activated Sintering of CuO-Doped TiO2’ Master Thesis, National Tsing Hua University

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