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Articles by Z Liao
Total Records ( 2 ) for Z Liao
  J Zhang , C Yu , Z Liao , X Zhang , L You and D. Yu

Mn-doped ZnO nanobelts have been synthesized via the vapor phase evaporation method, which exhibited ferromagnetism at room temperature. Electron energy-loss spectroscopy was used to investigate the chemical state of Mn dopants. It revealed that the Mn species had the chemical valence of +2. Meanwhile, the fine structures of the Mn L23 edges indicated that the Mn dopant was located at the center of an oxygen octahedron but not an oxygen tetrahedron. This suggested that the Mn dopants did not substitute on the Zn sites as expected and sub-nanoscale MnO clusters had been formed in the synthesized ZnO nanobelts.

  P Gao , K Liu , L Liu , Z Wang , Z Liao , Z Xu , W Wang , X Bai , E Wang and Y. Li

The higher-order harmonic resonances, including second and third harmonic modes, were induced by applying alternative current signals inside a high-resolution transmission electron microscope (HRTEM), which have been used to study the mechanical properties of individual cadmium sulphide (CdS) nanowires. Young's moduli (E) and mechanical quality factors (Q) of individual CdS nanowires with diameters in the range of 50–350 nm were measured with the assistance of the mechanical resonances. The results indicate that the smooth nanowires have larger E and Q in comparison with the rough nanowires, and for the rough nanowires, E and Q increase with increasing diameters. The morphology- and size-dependent mechanical properties of CdS nanowires are directly correlated with their structure, as imaged by in situ TEM.

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