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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 14    No. 1    February 2004

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Strain-induced orientation of copper oxide nanoislands
throughdecomposition of pre-organized copper nitrate
GU Li(谷 俐), CHEN Shu-da(陈树大), ZHAO Hui-min(赵惠明)

Department of Chemical Engineering, Jiaxing College, Zhejiang 314000, China

Abstract:By the decomposition of copper nitrate at 400℃, oriented islands of copperoxide crystals were successfully fabricated on the amorphous glass surface. X-ray diffraction (XRD), atom force microscope (AFM), and X-ray photoelectron spectroscopy (XPS) confirm the presence of copper oxide islands. The formation of oriented island structures is attributed to the following reasons: 1) the mismatch between the glass substrate and the copper oxide crystals during the relaxation of thermal expansion leads to the formation of islands; 2) the preorganized copper nitrate particles in the voids of colloidal crystals determine their ordered spatial distribution; 3) the strain of the glass substrate developing during calcination provides the driven energy for the orientation of copper oxide crystals along the same direction.

 

Key words: nanoislands; oriented growth; copper oxide; atom force microscope; colloidal crystals

ISSN 1672-7029
CN 43-1423/U

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