Nanoindentation: Toward the sensing of atomic interactions

被引:65
作者
Fraxedas, J
Garcia-Manyes, S
Gorostiza, P
Sanz, F
机构
[1] Univ Barcelona, Ctr Bioelect & Nanobiosci, Barcelona 08028, Spain
[2] Univ Barcelona, Dept Quim Fis, Barcelona 08028, Spain
[3] Univ Autonoma Barcelona, Inst Ciencia Mat Barcelona, E-08193 Bellaterra, Spain
关键词
D O I
10.1073/pnas.042106699
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The mechanical properties of surfaces of layered materials (highly oriented pyrolytic graphite, InSe, and GaSe) and single-crystal ionic materials (NaCl, KBr, and KCl) have been investigated at the nanometer scale by using nanoindentations produced with an atomic force microscope with ultrasharp tips. Special attention has been devoted to the elastic response of the materials before the onset of plastic yield. A new model based on an equivalent spring constant that takes into account the changes in in-plane interactions on nanoindentation is proposed. The results of this model are well correlated with those obtained by using the Debye model of solid vibrations.
引用
收藏
页码:5228 / 5232
页数:5
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