Strain distribution of metal nanoparticles embedded in Lu2O3 film

被引：0

作者：

Liu, Xiao-Shan ^{[1
,2
]}

Yuan, Cai-Lei ^{[1
]}

Liu, Gui-Qiang ^{[1
]}

Fu, Guo-Lan ^{[1
]}

Luo, Xing-Fang ^{[1
]}

机构：

[1] College of Physics and Communication Electronics, Jiangxi Normal University

[2] Key Laboratory of Optoelectronic and Telecommunication of Jiangxi

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2014年 / 43卷 / 06期

关键词：

Compressive stress; Finite-element method; Nanoparticles; Strain; Thin films;

D O I：

10.3788/gzxb20144306.0616004

中图分类号：

学科分类号：

摘要：

The strain distributions of Au, Cu, Pt and Co nanoparticles embedded in Lu2O3 matrix were investigated by the finite-element calculations. The simulation results indicated that all of metal nanoparticles incure compressive stress by the Lu2O3 matrix, which thus result in the corresponding strain in the center and at the surface of nanoparticles. The strain distributions are closely related to the Young's modulus and poisson's ratio of metal nanoparticles and matrix. For the metal nanoparticle with bigger Young's modulus, the difference between the strain in the center and that at the surface of the nanoparticles is largerer. While, for the metal nanoparticle with smaller Young's modulus, the difference between the strainat the surface and that in the center of the nanoparticles is smaller. Meanwhile, with the growth of metal nanoparticles, the deviator strain also increase. This net deviatoric strain distribution may also have a significant influence on the morphology and microstructure of metalnanoparticles, and thus the physical properties of metal nanoparticles.

引用

共 26 条

[1]

Ibach H., The role of surface stress in reconstruction, epitaxialgrowth and stabilization of mesoscopic structures, Surface Science Reports, 29, 5, pp. 195-263, (1997)

[2]

Roberts M.M., Klein L.J., Savage D.E., Et al., Elastically relaxed free-standing strained-silicon nanomembranes, Nature Materials, 5, 5, pp. 388-393, (2006)

[3]

Johnson C.L., Snoeck E., Ezcurdia M., Et al., Effects of elastic anisotropy on strain distributions in decahedral gold nanoparticles, Nature Materials, 7, 2, pp. 120-124, (2007)

[4]

Shan Z., Adesso G., Cabot A., Et al., Ultrahigh stress and strain in hierarchically structured hollow nanoparticles, Nature Materials, 7, 18, pp. 947-952, (2008)

[5]

Smith A.M., Mohs A.M., Nie S., Tuning the optical and electronic properties of colloidal nanoparticles by lattice strain, Nature Nanotechnology, 4, 1, pp. 56-63, (2008)

[6]

Tseng J.Y., Chen Y.T., Hsu C.H., Et al., Effect of annealing time on structure, composition and electrical characteristics of self- assembled Ptnanoparticles in metal-oxide-semiconductor memory structures, Ecs Journal of Solid State Science and Technology, 1, 3, pp. 47-51, (2012)

[7]

Brus L., Noble metal nanoparticles: Plasmon electron transfer photochemistry and single-molecule Raman spectroscopy, Accounts of Chemical Research, 41, 12, pp. 1742-1749, (2008)

[8]

Tseng J.Y., Cheng C.W., Wang S.Y., Et al., Memory characteristics of Ptnanoparticles self-assembled from reduction of an embedded PtOx ultrathin film in metal-oxide-semiconductor structures, Applied Physics Letters, 85, 13, pp. 2595-2597, (2004)

[9]

Yang X.C., Hou J.W., Liu Y., Et al., OPAA template-directed synthesis and optical properties of metal nanoparticles, Nanoscale Research Letters, 8, 1, pp. 1-8, (2013)

[10]

Sun C., Li C.-H., Shi R.-Y., Et al., A study of influences of metal nanoparticles on absorbing efficiency of organic solar Cells, Acta Photonica Sinica, 41, 11, pp. 1335-1341, (2012)

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