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Mechanical behavior of nanocrystalline NaCl islands on Cu(111)

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Mielke,  Johannes
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Villagómez Ojeda,  Carlos J.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Grill,  Leonhard
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Bombis, C., Ample, F., Mielke, J., Mannsberger, M., Villagómez Ojeda, C. J., Roth, C., et al. (2010). Mechanical behavior of nanocrystalline NaCl islands on Cu(111). Physical Review Letters, 104(18): 185502. doi:10.1103/PhysRevLett.104.185502.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-F5B3-E
Abstract
The mechanical response of ultrathin NaCl crystallites of nanometer dimensions upon manipulation with the tip of a scanning tunneling microscope (STM) is investigated, expanding STM manipulation to various nanostructuring modes of inorganic materials as cutting, moving, and cracking. In the light of theoretical calculations, our results reveal that atomic-scale NaCl islands can behave elastically and follow a classical Hooke’s law. When the elastic limit of the nanocrystallites is reached, the STM tip induces atomic dislocations and consequently the regime of plastic deformation is entered. Our methodology is paving the way to understand the mechanical behavior and properties of other nanoscale materials.