Nanotrenches are induced by thermal annealing Au droplets on ZnSe surfaces. High-resolution scanning electron microscopy studies of the nanotrench structures reveal that the preferred migration directions of the catalyst droplets are along the \( {\left\langle {{\hbox{110}}} \right\rangle } \) direction family. On a ZnSe(111)B surface, each of the trenches is along one of the six \( {\left\langle {{\hbox{110}}} \right\rangle } \) directions while on a nonvicinal ZnSe(100) surface, the trenches are along a pair of antiparallel \( {\left\langle {{\hbox{110}}} \right\rangle } \) directions. Based on the results obtained from atomic force microscopy surface profiling and electron energy-loss spectroscopy chemical analysis techniques, a model is proposed to describe the possible formation mechanisms of the␣observed nanotrenches. The highly parallel nanotrenches induced on the Au/ZnSe(100) structure as revealed in this study are potentially useful as a template for in situ fabrication of ordered one-dimensional nanostructures (such as nanowires) of many materials.
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Acknowledgements
The MBE growth was performed in the Zheng Ge Ru Thin Film Physics Laboratory at HKUST. The authors are grateful to the staff of the Materials Characterization and Preparation Facilities at HKUST for technical assistance. The authors would also like to thank Dr Y.J. Wang for his assistance in carrying out the AFM measurements. The work described here was substantially supported by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Nos. 603804 and N_HKUST615/06).
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Chan, S., Lok, S., Wang, G. et al. Nanotrenches Induced by Catalyst Particles on ZnSe Surfaces. J. Electron. Mater. 37, 1344–1348 (2008). https://doi.org/10.1007/s11664-008-0437-0
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DOI: https://doi.org/10.1007/s11664-008-0437-0