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Size effect of the surface energy density of nanoparticles
Yao Y (姚寅); Wei YC (魏遥驰); Chen SH(陈少华)
Source PublicationSurface Science
The surface energy density of nanoparticles exhibits an obviously size-dependent behavior. However, how the surface energy density changes with the diameter of nanoparticles is still ambiguous. Based on a recently developed continuum theory considering the size effect in nanomaterials, theoretical analysis is carried out for various fcc metallic nanoparticles. Surface lattice contractions of nanoparticles are predicted and compared with the existing experimental data. As a result, the surface energy density decreases with the increase of nanoparticle diameter. Such a variation trend of surface energy density is contrary to the prediction of existing theoretical models but well consistent with the previously atomistic simulations and density functional calculations. The results in this paper provide a further understanding of the surface effect of nanoparticles, which should be helpful for the design of nanoscale devices or nanomaterials related to nanoparticles, such as NEMs and nanoparticle-reinforced composites.
KeywordMetallic Nanoparticles Size Effect Lattice Contraction Surface Energy Density
Subject Area新型材料的力学问题
Indexed BySCI ; EI
WOS IDWOS:000351798100004
Citation statistics
Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChen SH(陈少华)
Recommended Citation
GB/T 7714
Yao Y ,Wei YC ,Chen SH. Size effect of the surface energy density of nanoparticles[J]. Surface Science,2015,636:19-24.
APA Yao Y ,Wei YC ,&Chen SH.(2015).Size effect of the surface energy density of nanoparticles.Surface Science,636,19-24.
MLA Yao Y ,et al."Size effect of the surface energy density of nanoparticles".Surface Science 636(2015):19-24.
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