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Title: Young’s modulus of [111] germanium nanowires

Abstract

Our paper reports a diameter-independent Young’s modulus of 91.9 ± 8.2 GPa for [111] Germanium nanowires (Ge NWs). When the surface oxide layer is accounted for using a core-shell NW approximation, the YM of the Ge core approaches a near theoretical value of 147.6 ± 23.4 GPa. The ultimate strength of a NW device was measured at 10.9 GPa, which represents a very high experimental-to-theoretical strength ratio of ~75%. Furthermore, with increasing interest in this material system as a high-capacity lithium-ion battery anode, the presented data provide inputs that are essential in predicting its lithiation-induced stress fields and fracture behavior.

Authors:
 [1];  [2];  [3];  [1];  [1]
  1. Virginia Commonwealth Univ., Richmond, VA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1236212
Report Number(s):
SAND-20157594J
Journal ID: ISSN 2166-532X; AMPADS; 603560
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Accepted Manuscript
Journal Name:
APL Materials
Additional Journal Information:
Journal Volume: 3; Journal Issue: 11; Journal ID: ISSN 2166-532X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; germanium; elemental semiconductors; atomic force microscopy; fracture mechanics; oxide surface

Citation Formats

Maksud, M., Yoo, J., Harris, C. T., Palapati, N. K. R., and Subramanian, A. Young’s modulus of [111] germanium nanowires. United States: N. p., 2015. Web. doi:10.1063/1.4935060.
Maksud, M., Yoo, J., Harris, C. T., Palapati, N. K. R., & Subramanian, A. Young’s modulus of [111] germanium nanowires. United States. doi:10.1063/1.4935060.
Maksud, M., Yoo, J., Harris, C. T., Palapati, N. K. R., and Subramanian, A. Mon . "Young’s modulus of [111] germanium nanowires". United States. doi:10.1063/1.4935060. https://www.osti.gov/servlets/purl/1236212.
@article{osti_1236212,
title = {Young’s modulus of [111] germanium nanowires},
author = {Maksud, M. and Yoo, J. and Harris, C. T. and Palapati, N. K. R. and Subramanian, A.},
abstractNote = {Our paper reports a diameter-independent Young’s modulus of 91.9 ± 8.2 GPa for [111] Germanium nanowires (Ge NWs). When the surface oxide layer is accounted for using a core-shell NW approximation, the YM of the Ge core approaches a near theoretical value of 147.6 ± 23.4 GPa. The ultimate strength of a NW device was measured at 10.9 GPa, which represents a very high experimental-to-theoretical strength ratio of ~75%. Furthermore, with increasing interest in this material system as a high-capacity lithium-ion battery anode, the presented data provide inputs that are essential in predicting its lithiation-induced stress fields and fracture behavior.},
doi = {10.1063/1.4935060},
journal = {APL Materials},
number = 11,
volume = 3,
place = {United States},
year = {2015},
month = {11}
}

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