Sarankamol Athichaikhongphat, a second-year master’s student in the Graduate School of Engineering, has written a paper entitled “Volume-shrinkage-driven curling behavior of dual-composition Al/Ni multilayer thin films for bonding applications,” which has been selected as a Spotlight Article in the Japanese Journal of Applied Physics (JJAP).
Under the supervision of Professor Takahiro Namazu (Faculty of Engineering; Specialization: Nanomechanics, Nanotechnology, Functional Materials), Sarankamol fabricated metal multilayer films by layering aluminum (Al) and nickel (Ni) to thicknesses of several tens of nanometers. These Al/Ni multilayer films are novel functional materials that exhibit exothermic phenomena, alloying in response to external stimuli and releasing excess energy as heat. By layering two types of Al/Ni multilayer films with different atomic ratios, Sarankamol developed a new technology that exploits the difference in volumetric shrinkage to control the shape of the resulting alloy after the reaction. It is expected that the results of this research will be useful in the research and development of direct metal bonding.
If you are interested, please read the summary of Sarankamol’s paper at the link below!
https://iopscience.iop.org/article/10.35848/1347-4065/ae4405
(Hiroshi Kawakami, Faculty of Engineering)