Research Interests

My research focuses on the development of new processes for the additive manufacturing of metals and ceramics by understanding reactions driven by electron, laser, and ion beams. I have particular interest in the design and implementation of in situ characterization techniques using high-speed optical imaging, electron microscopy, and various synchrotron X-ray capabilities to probe the fundamental mechanisms underlying 3D printing and nanofabrication processes. A significant portion of my scientific research has been in collaboration with industrial partners to understand the science underpinning materials processing techniques and incorporating these findings into new technologies.

News Highlights

• Uranium takes an alternate pathway under extreme conditions
• Researchers measure electron emission to improve understanding of laser-based metal 3D printing
• Lab study of droplet dynamics advances 3D printing
• Additive manufacturing caught on camera
• New multibeam metal 3D printer testbed to understand laser-material interactions
• LLNL researchers use X-ray imaging experiments to probe metal 3D printing process

External Links

• Google Scholar
• Research Gate
• LinkedIn

Ph.D., Physics, University of Technology Sydney, 2015

B.S., Nanotechnology (Honors), University of Technology Sydney, 2006

1. Dynamics of pore formation during laser powder bed fusion additive manufacturing, A. A. Martin, N. P. Calta, S. A. Khairallah, J. Wang, P. J. Depond, A. Y. Fong, V. Thampy, G. M. Guss, A. M. Kiss, K. H. Stone, C. J. Tassone, J. Nelson Weker, M. F. Toney, T. van Buuren and M. J. Matthews, Nature Communications, 10, 1987 (2019).
2. Controlling interdependent meso-nanosecond dynamics and defect generation in metal 3D printing, S. A. Khairallah, A. A. Martin, J. R. I. Lee, G. Guss, N. P. Calta, J. A. Hammons, M. H. Nielsen, K. Chaput, E. Schwalbach, M. N. Shah, M. G. Chapman, T. M. Willey, A. M. Rubenchik, A. T. Anderson, Y. M. Wang, M. J. Matthews, W. E. King, Science, 368 (6491), 660-665 (2020).
3. Formation of high purity uranium via laser induced thermal decomposition of uranium nitride, B. C. Childs, A. A. Martin, A. Perron, E. E. Moore, Y. Idell, T. W. Heo, D. L. Rosas, C. Schaeffer-Cuellar, R. L. Stillwell, P. Söderlind, A. Landa, K. S. Holliday, J. R. Jeffries, Materials & Design, 192, 108706 (2020).
4. Laser-metal interaction dynamics during additive manufacturing resolved by detection of thermally-induced electron emission, P. J. DePond, J. C. Fuller, S. A. Khairallah, J. R. Angus, G. Guss, M. J. Matthews, A. A. Martin, Communications Materials, 1, 92 (2020).
5. Ultrafast dynamics of laser-metal interactions in additive manufacturing alloys captured by in situ X-ray imaging, A. A. Martin, N. P. Calta, J. A. Hammons, S. A. Khairallah, M. H. Nielsen, R. M. Shuttlesworth, N. Sinclair, M. J. Matthews, J. R. Jeffries, T. M. Willey and J. R.I. Lee, Materials Today Advances, 1, 100002 (2019).
6. Unconventional Pathways to Carbide Phase Synthesis via Thermal Decomposition of UI₄(1,4-dioxane)₂, M. G. Ferrier, B. C. Childs, C. M. Silva, M. M. Greenough, E. E. Moore, A. J. Swift, S. A. Di Pietro, A. A. Martin, J. R. Jeffries, K. S. Holliday, Inorganic Chemistry, 61 (44), 17579-17589 (2022).
7. Thermal history and high-speed optical imaging of overhang structures during laser powder bed fusion: A computational and experimental analysis, A. Ashby, G. Guss, R. K. Ganeriwala, A. A. Martin, P. J. DePond, D. J. Deane, M. J. Matthews, C. L. Druzgalski, Additive Manufacturing, 15, 102669 (2022).
8. Dynamic pattern formation in electron-beam-induced etching, A. A. Martin, A. Bahm, J. Bishop, I. Aharonovich and M. Toth, Physical Review Letters, 115 (25), 255501 (2015).
9. Subtractive 3D printing of optically active diamond structures, A. A. Martin, M. Toth, I. Aharonovich, Scientific Reports, 4 (1), 5022 (2014).
10. Role of activated chemisorption in gas-mediated electron beam induced deposition, J. Bishop, C. Lobo, A. A. Martin, M. Ford, M. R. Phillips and M. Toth, Physical Review Letters, 109 (14), 146103 (2012).

• Physical and Life Sciences Directorate Award, Excellence in Publication in Science, 2023

• WCI Bronze Award, Extraordinary Material Testing Support to the W80-4 LEP, 2021

• WCI Bronze Award, Formation of High Purity Uranium via Laser Decomposition, 2021

• Deputy Director for Science and Technology Excellence in Publication Award, 2020

• Physical and Life Sciences Directorate Award, Excellence in Publication in Science, 2020

• Physical and Life Sciences Directorate Award, Excellence in Publication in Science, 2019

• Materials Science Division Spot Award, Implementation of New PFIB Capability, 2019

• Materials Science Division Spot Award, Identifying Security Protocol Problem, 2017

• Chancellor's List for Outstanding PhD Thesis, University of Technology, Sydney, 2016

• M&M 2014 Meeting Scholar, Microscopy and Microanalysis 2014 Meeting, 2014

• Best Student Presentation, Australian Microbeam Analysis Society, 2013

• John Stocker Postgraduate Scholarship, Science and Industry Endowment Fund, 2012

• Undergraduate Vacation Scholarship, CSIRO Australia, 2004