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Technical Brief

Low-Energy Ion Irradiated Silicon Nanowires: Anomalous Plastic Deformation

[+] Author and Article Information
Chu Rainer Kwang-Hua

Transfer Centre,
4/F, No. 16, Lane 21,
Kwang-Hui Road,
Taipei 116, Taiwan, China;
Distribution Centre,
Golmud Mansion,
33, Road Yingbin,
Golmud 816000, China
e-mail: chuys01@163.com

1Corresponding author.

Manuscript received March 17, 2017; final manuscript received September 11, 2017; published online March 5, 2018. Assoc. Editor: Michal Kostal.

ASME J of Nuclear Rad Sci 4(2), 024502 (Mar 05, 2018) (3 pages) Paper No: NERS-17-1014; doi: 10.1115/1.4038336 History: Received March 17, 2017; Revised September 11, 2017

We adopted the verified transition state theory, which originates from the quantum chemistry approach to explain the anomalous plastic flow or plastic deformation for Si nanowires irradiated with 100 keV (at room temperature regime) Ar+ ions as well as the observed amorphization along the Si nanowire (Johannes, et al. 2015, “Anomalous Plastic Deformation and Sputtering of Ion Irradiated Silicon Nanowires,” Nano Lett., 15, pp. 3800–3807). We shall illustrate some formulations which can help us calculate the temperature-dependent viscosity of flowing Si in nanodomains.

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References

Johannes, A. , Noack, S. , Wesch, W. , Glaser, M. , Lugstein, A. , and Ronning, C. , 2015, “ Anomalous Plastic Deformation and Sputtering of Ion Irradiated Silicon Nanowires,” Nano Lett., 15(6), pp. 3800–3807. [CrossRef] [PubMed]
Trinkaus, H. , and Ryazanov, A. I. , 1995, “ Viscoelastic Model for the Plastic Flow of Amorphous Solids Under Energetic Ion Bombardment,” Phys. Rev. Lett., 74, pp. 5072–5075. [CrossRef] [PubMed]
Eyring, H. , and Ree, T. , 1955, “ A Generalized Theory of Plasticity Involving the Virial Theorem,” Proc. Natl. Acad. Sci. U.S.A., 41, pp. 118–122. [CrossRef] [PubMed]
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Lugstein, A. , Steinmair, M. , Steiger, A. , Kosina, H. , and Bertagnolli, E. , 2010, “ Anomalous Piezoresistance Effect in Ultrastrained Silicon Nanowires,” Nano Lett., 10(8), pp. 3204–3208. [CrossRef] [PubMed]
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Figures

Grahic Jump Location
Fig. 1

Schematic (illustration) of an Eyring's microscopically plastic flow [3]: Flow proceeds by the motion of (composite) particles into holes left open by neighboring ones. Eyring proposed [4] that shear occurs along sets of parallel planes. The distance between these planes is indicated by the symbol k1. The shear force per unit area is indicated by f. A patch of atoms or molecules whose cross-sectional area is k2k3 shift or jump as a unit on either side of the shear plane. The distance the patch moves per jump is k.

Grahic Jump Location
Fig. 2

Schematic of a cross section (mean radius being an) with wavy rough wall. ϵ is the amplitude of the wavy roughness and the wave number of wavy roughness is kr (say, which is 10 here).

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