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Extracting nanobelt mechanical properties from nanoindentation
Zhang Y(张吟); Zhang Y
Source PublicationJournal of Applied Physics
2010
Volume107Issue:12Pages:123518
ISSN0021-8979
AbstractA three-spring-in-series model is proposed for the nanobelt (NB) indentation test. Compared with the previous two-spring-in-series model, which considers the bending stiffness of atomic force microscope cantilever and the indenter/NB contact stiffness, this model adds a third spring of the NB/substrate contact stiffness. NB is highly flexural due to its large aspect ratio of length to thickness. The bending and lift-off of NB form a localized contact with substrate, which makes the Oliver-Pharr method [W. C. Oliver and G. M. Pharr, J. Mater. Res. 7, 1564 (1992)] and Sneddon method [I. N. Sneddon, Int. J. Eng. Sci. 3, 47 (1965)] inappropriate for NB indentation test. Because the NB/substrate deformation may have significant impact on the force-indentation depth data obtained in experiment, the two-spring-in-series model can lead to erroneous predictions on the NB mechanical properties. NB in indentation test can be susceptible to the adhesion influence because of its large surface area to volume ratio. NB/substrate contact and adhesion can have direct and significant impact on the interpretation of experimental data. Through the three-spring-in-series model, the influence of NB/substrate contact and adhesion is analyzed and methods of reducing such influence are also suggested. (C) 2010 American Institute of Physics. [doi:10.1063/1.3432748]
DOI10.1063/1.3432748
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Indexed BySCI
Language英语
WOS IDWOS:000279993900045
WOS KeywordELASTIC HALF-SPACE ; ATOMIC-FORCE-MICROSCOPE ; ZNO NANOBELTS ; TENSIONLESS CONTACT ; UNBONDED CONTACT ; SILVER NANOWIRES ; CARBON NANOTUBES ; FINITE BEAM ; INDENTATION ; MODULUS
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
Funding OrganizationNational Natural Science Foundation of China (NSFC) [10721202] ; LNM initial funding for young investigators ; Ministry of Science and Technology (MOST) [2010CB631004]
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Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43487
Collection非线性力学国家重点实验室
Corresponding AuthorZhang Y
Recommended Citation
GB/T 7714
Zhang Y,Zhang Y. Extracting nanobelt mechanical properties from nanoindentation[J]. Journal of Applied Physics,2010,107(12):123518.
APA 张吟,&Zhang Y.(2010).Extracting nanobelt mechanical properties from nanoindentation.Journal of Applied Physics,107(12),123518.
MLA 张吟,et al."Extracting nanobelt mechanical properties from nanoindentation".Journal of Applied Physics 107.12(2010):123518.
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