| Original Articles |
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AFM Study on the Formation Mechanism and Microstructure of Ni Atomic Aggregates on Liquid Substrates |
| FANG Zheng-Nong, XIE Jian-Ping, FENG Yuan-Xin, ZHANG Chu-Hang, YANG Bo, YE Gao-Xiang |
| Department of Physics, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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FANG Zheng-Nong, XIE Jian-Ping, FENG Yuan-Xin et al 2008 Chin. Phys. Lett. 25 3338-3341 |
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Abstract We study the formation mechanism and microstructure of nickel (Ni) atomic aggregates on the silicone oil surfaces by atomic force microscopy (AFM). Initially, the deposited atoms nucleate and form the compact clusters on the liquid surfaces. Then they perform Brownian motion and adhere upon impact. Finally the branched aggregates are formed. The Ni aggregates exhibit granular structure. The mean size of the granularities in the aggregates is of the order of 10 nm and it decreases with the nominal film thickness. The experiment shows that the Ni aggregates perform a directional diffusion towards the sample edge. The interpretation for this phenomenon is presented.
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| Keywords:
61.46.Bc
61.46.Df
68.55.-a
68.37.Ps
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Received: 09 April 2008
Published: 29 August 2008
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| PACS: |
61.46.Bc
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(Structure of clusters (e.g., metcars; not fragments of crystals; free or loosely aggregated or loosely attached to a substrate))
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61.46.Df
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(Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots))
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68.55.-a
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(Thin film structure and morphology)
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68.37.Ps
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(Atomic force microscopy (AFM))
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