Young's modulus of [111] germanium nanowires

M. Maksud; Jinkyoung Yoo; C. T. Harris; N. K.R. Palapati; A. Subramanian

doi:10.1063/1.4935060

Young's modulus of [111] germanium nanowires

M. Maksud
, Jinkyoung Yoo
, C. T. Harris
, N. K.R. Palapati
, A. Subramanian

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

This 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%. 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.

Original language	English
Article number	116101
Journal	APL Materials
Volume	3
Issue number	11
DOIs	https://doi.org/10.1063/1.4935060
State	Published - Nov 1 2015

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abstract = "This 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\%. 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.",

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AU - Maksud, M.

AU - Yoo, Jinkyoung

AU - Harris, C. T.

AU - Palapati, N. K.R.

AU - Subramanian, A.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - This 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%. 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.

AB - This 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%. 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.

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JO - APL Materials

JF - APL Materials

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ER -

Young's modulus of [111] germanium nanowires

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