2019 Fiscal Year Annual Research Report
Fine Structure of Bimetallic Solid Solution Nanoparticles Dispersed in Liquid by Double-Head Matrix Sputtering
| Project/Area Number |
17K14072
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| Research Institution | Hokkaido University |
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Principal Investigator |
グエン タンマイ 北海道大学, 工学研究院, 助教 (00730649)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | double target head / nanoparticles / alloy / bimetallic / solid solution / sputtering onto liquid / cosputtering / liquid polymer |
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| Outline of Annual Research Achievements |
Producing solid solution alloy of immiscible metals pairs in the bulk is performed via co-sputtering onto polyethylene glycol, PEG, (Mw=600) and TEM grid. The research successfully created Pt/Au alloy nanoparticles with tunable compositions. The nanoparticle structures were examined with XRD and STEM-EDX mapping to confirm the alloy formation. Further, the relation of the particle composition and particle size and agglomeration state was elucidated and explained theoretically and experimentally.
Understanding of the growth of the alloy nanoparticles such as Pt/Cu in liquid PEG with respected to various sputtering parameters was obtained by studying the relation of the particle sizes and sputtering time, liquid temperature and rotation speed, and sputtering periods. The finding highlights the growth of particles in both the liquid surface and the bulk liquid.
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