期刊
JOURNAL OF APPLIED PHYSICS
卷 106, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3211326
关键词
aluminium; brass; chromium; copper; metallic thin films; nanofabrication; nanoparticles; sputter deposition
资金
- American Chemical Society Petroleum Research Fund
A new method is reported to form metal nanoparticles by sputter deposition inside a reactive ion etching chamber with a very short target-substrate distance. The distribution and morphology of nanoparticles are found to be affected by the distance, the ion concentration, and the sputtering time. Densely distributed nanoparticles of various compositions were fabricated on the substrates that were kept at a distance of 130 mu m or smaller from the target. When the distance was increased to 510 mu m, island structures were formed, indicating the tendency to form continuous thin film with longer distance. The observed trend for nanoparticle formation is opposite to the previously reported mechanism for the formation of nanoparticles by sputtering. A new mechanism based on the seeding effect of the substrate is proposed to interpret the experimental results.
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