Young's Modulus of Wurtzite and Zinc Blende InP Nanowires.
basic_science · Level V
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- Record sourced from PubMed, PMID 28534623.
- Also identified by DOI 10.1021/acs.nanolett.7b00312.
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Abstract
The Young's modulus of thin conical InP nanowires with either wurtzite or mixed "zinc blende/wurtzite" structures was measured. It has been shown that the value of Young's modulus obtained for wurtzite InP nanowires (E<sub>[0001]</sub> = 130 ± 30 GPa) was similar to the theoretically predicted value for the wurtzite InP material (E<sub>[0001]</sub> = 120 ± 10 GPa). The Young's modulus of mixed "zinc blende/wurtzite" InP nanowires (E<sub>[111]</sub> = 65 ± 10 GPa) appeared to be 40% less than the theoretically predicted value for the zinc blende InP material (E<sub>[111]</sub> = 110 GPa). An advanced method for measuring the Young's modulus of thin and flexible nanostructures is proposed. It consists of measuring the flexibility (the inverse of stiffness) profiles 1/k(x) by the scanning probe microscopy with precise control of loading force in nanonewton range followed by simulations.