Determination of the mechanical constants of ZnS nanobelt by combining nanoindentation test and finite element method

Tao, Yao-wu; Zheng, Xuejun; Liu, Wei; Song, S.T.; Zheng, Hui

doi:10.1016/j.ijsolstr.2012.10.013

Cited by 4 publications

(1 citation statement)

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“…Li et al first measured the Young's modulus of ZnS nanoribbons with thicknesses of 50-100 nm by nanoindentation and obtained a relatively low value of 35.9 ± 3.5 GPa [9]. Similar values were also subsequently obtained by both the nanoindentation-based method [10] as well as the in situ scanning electron microscopy (SEM) tensile method [11]. To eliminate the possible substrate effects associated with the nanoindentation methods, Xiong et al developed a new atomic force microscopy (AFM)-based bending approach for modulus measurement [12], and found that ZnS nanobelts with thicknesses ranging from 50 to 200 nm exhibited a Young's modulus of 52 ± 7.0 GPa, which is ∼30% lower than their bulk value of 80-88 GPa [13,14].…”

Section: Introductionmentioning

confidence: 76%

Size- and temperature-dependent Young’s modulus of individual ZnS nanobelts

Li¹,

Jiang²,

Dai³

et al. 2022

J. Phys. D: Appl. Phys.

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The Young’s modulus of individual ZnS nanobelts with thicknesses ranging from 30 – 110 nm is measured by a mechanical resonance method over a temperature range of 300 – 650 K. Nanobelts with thicknesses above ~ 80 nm exhibit a Young’s modulus very close to their corresponding bulk value of 88 GPa, whilst thinner nanobelts with thicknesses down to 30 nm exhibit a Young’s modulus of ~ 70 GPa. Incrementally heating a nanobelt of 110 nm thickness over a temperature range of 300 to 650 K presents a linearly decreasing Young’s modulus. The nanobelt is thus found to possess a temperature coefficient of Young’s modulus of -125.4±2.8 ppm/K, which is comparable to their bulk value of -147 ppm/K. The temperature coefficient of Young’s modulus for nanobelts with thicknesses below 100 nm demonstrates a strong size effect, and is found to dramatically decreases to as low as -201.4±10.2 ppm/K for thickness of 30 nm. A nonlinear temperature dependence of Young’s modulus is experimentally identified for nanobelt with diameters below 100 nm, and the linear-nonlinear transition temperature decreases with the decreasing thickness.

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