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Title: Mechanical characterization of hotplate synthesized vanadium oxide nanobelts
Authors: Zhu, Y. 
Zhang, Y. 
Dai, L. 
Cheong, F.-C. 
Tan, V. 
Sow, C.-H. 
Lim, C.-T. 
Keywords: Nanobelts
Structure characterization
Vanadium oxide
Young's modulus
Issue Date: Jan-2010
Citation: Zhu, Y., Zhang, Y., Dai, L., Cheong, F.-C., Tan, V., Sow, C.-H., Lim, C.-T. (2010-01). Mechanical characterization of hotplate synthesized vanadium oxide nanobelts. Acta Materialia 58 (2) : 415-420. ScholarBank@NUS Repository.
Abstract: Vanadium oxide nanobelts have been synthesized on Si or SiN substrates by simply heating vanadium foils on a hotplate. As-grown nanobelts were characterized as V2O5·nH2O (0.3 < n < 1.7) layer structures containing water molecular intercalation. Using an electromechanical resonance method, the Young's modulus of the nanobelts was measured in situ in a scanning electron microscope. It was found that the Young's modulus of as-grown nanobelts varied between 5.6 and 98 GPa, with a typical Q-factor of 120. Such scattered values were attributed to the different contents of water molecules in the nanobelts. After annealing at 450 °C in vacuum, the nanobelts were converted to α-V2O5 phase and a polycrystalline structure was observed. The Young's modulus of the annealed nanobelts showed more consistent values at an average of 28.9 GPa, lower than the calculated modulus of bulk α-V2O5 at 68 GPa. © 2009 Acta Materialia Inc.
Source Title: Acta Materialia
ISSN: 13596454
DOI: 10.1016/j.actamat.2009.09.018
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