Young's Modulus of Wurtzite and Zinc Blende InP Nanowires

Mikhail Dunaevskiy*, Pavel Geydt, Erkki Lähderanta, Prokhor Alekseev, Tuomas Haggrén, Joona Pekko Kakko, Hua Jiang, Harri Lipsanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)

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[0001] = 130 ± 30 GPa) was similar to the theoretically predicted value for the wurtzite InP material (E[0001] = 120 ± 10 GPa). The Young's modulus of mixed "zinc blende/wurtzite" InP nanowires (E[111] = 65 ± 10 GPa) appeared to be 40% less than the theoretically predicted value for the zinc blende InP material (E[111] = 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.

Original languageEnglish
Pages (from-to)3441-3446
Number of pages6
JournalNano Letters
Volume17
Issue number6
DOIs
Publication statusPublished - 14 Jun 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • InP
  • Nanowires
  • scanning probe miscroscopy
  • Wurtzite
  • Young's modulus

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