Open Access Nano Express

The surface condition effect of Cu2O flower/grass-like nanoarchitectures grown on Cu foil and Cu film

Lijiao Hu, Yang Ju*, Atsushi Hosoi and Yongpeng Tang

Author Affiliations

Department of Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

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Nanoscale Research Letters 2013, 8:445  doi:10.1186/1556-276X-8-445

Published: 28 October 2013

Abstract

Cu2O flower/grass-like nanoarchitectures (FGLNAs) were fabricated directly on two category specimens of Cu foils and Cu film using thermal oxidation method. The FGLNAs are approximately 3.5 to 12 μm in size, and their petals are approximately 50 to 950 nm in width. The high compressive stress caused by a large oxide volume in the Cu2O layer on the specimen surface played an important role in the growth of FGLNAs. The effects of surface conditions, such as the surface stresses, grain size, and surface roughness of Cu foil and Cu film specimens, on the FGLNA growth were discussed in detail.

PACS

81. Materials science; 81.07.-b Nanoscale materials and structures: fabrication and characterization; 81.16.Hc Catalytic methods

Keywords:
Flower/grass-like; Thermal oxidation; Nickel catalyst; Compressive stress