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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Thermodynamics and Kinetics of Alloys IV
Presentation Title Compositionally complex alloy nanoparticles via Nanosecond Laser-Induced Dewetting
Author(s) Ritesh Sachan, Vikas Reddy Paduri, Soumya Mandal, Jordan A. Hachtel, Nozomi Shirato
On-Site Speaker (Planned) Ritesh Sachan
Abstract Scope Compositionally complex alloy nanoparticles (CCA NPs) have recently garnered significant attention due to their promising properties relevant to energy-related applications. However, the development of processing techniques that can fabricate CCA nanoparticles with spatial order and tunable physical characteristics, such as size and microstructure, has been challenging due to achieving homogeneous mixing of the constituent elements. Here, we discuss how pulsed laser melting of ultrathin alloy films can be a powerful yet simple and cost-effective technique for fabricating CCA NPs. Ultrathin metal films (1-30 nm) on inert substrates such as SiO2 are generally unstable, with their free energy resembling that of a spinodal system. Such films can spontaneously evolve into nanomorphologies with well-defined length scales following an ultrafast kinetics. Here, we review this laser-based experimental technique and provide examples of the resulting robust nanostructures, which can have applications in catalysis and optics.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Solidification, Thin Films and Interfaces

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Computational Design of Austenitic TRIP Steels
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Experimental determination and thermodynamic assessment of the phase equilibria in the Co–Si binary system
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