Solid solution nanoparticles obtained by co-sputter deposition onto liquid polyethylene glycol Mai Thanh Nguyen and Tetsu Yonezawa Faculty of Engineering, Hokkaido University, Japan Bimetallic nanoparticles were prepared by co-sputter deposition of two metal targets onto solid and liquid polyethylene glycol. The structure of the formed nanoparticles were analyzed with XRD, STEM, and other techniques. The results revealed that solid solution alloy nanoparticles below 5 nm were obtained.The case studies were conducted for Au/Cu, Au/Pt, and Pt/Ag. 1-3 The composition of the alloys were varied by adjusting the electricalcurrents applied to the metal targets. The correlation between particle size and composition was observed in Au/Pt but it was not always found in other co-sputtered binary alloy nanoparticles. 1- 4 Comparison between thenanoparticles obtained on solid substrate and in the liquid helped shed light on the formationmechanism of the alloy nanoparticles and the impact of the liquid and metal elements on the particle formation and dispersion. References 1. L. Deng, M. T. Nguyen, J. Shi, Y-t. R. Chau, T. Tokunaga, M. Kudo, S. Matsumura, N. Hashimoto, and T. Yonezawa,Langmuir 2020, 36, 3004–3015. 2. M. T. Nguyen, H. Zhang, L. Deng, T. Tokunaga, and T. Yonezawa, Langmuir 2017, 33, 12389– 12397. 3. M. Zhu, M. T. Nguyen, Y.-t. R. Chau, L. Deng, and T. Yonezawa, Langmuir 2021, 37, 6096-6105. 4. Y.-t. R. Chau, M. T. Nguyen, M. Zhu, A. Romier, T. Tokunaga, T. Yonezawa, New J. Chem, 2020, 44, 4704-4712.
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