Critical size of iron nanoparticles on liquid substrates

doi:10.1088/1674-1056/22/11/116103

Abstract We study the iron atomic aggregates deposited on silicone oil surfaces by using atomic force microscopy. The aggregates are composed of disk-shaped nanoparticles with the mean diameter Φ_c≈31.7 nm and height H_c≈4.5 nm, which are nearly independent of the nominal film thickness. The experiment shows that a material condensation process must occur in the nanoparticles during the growth period. The anomalous phenomenon is explained.

Keywords: critical size nanoparticle condensation behavior liquid substrate

Received: 29 January 2013
Revised: 08 June 2013
Accepted manuscript online:

PACS:	61.46.-w	(Structure of nanoscale materials)
	81.07.-b	(Nanoscale materials and structures: fabrication and characterization)
	68.37.Ps	(Atomic force microscopy (AFM))
	68.55.J-	(Morphology of films)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074215) and the Fundamental Research Funds for Central Universities of Ministry of Education of China (Grant No. 2012QNA3010).

Corresponding Authors: Ye Gao-Xiang
E-mail: gxye@mail.hz.zj.cn

Cite this article:

Lü Neng (吕能), Pan Qi-Fa (潘启发), Cheng Yi (程毅), Yang Bo (杨波), Ye Gao-Xiang (叶高翔) Critical size of iron nanoparticles on liquid substrates 2013 Chin. Phys. B 22 116103

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