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| 題名: | Layer-dependent morphologies of silver on n-layer graphene |
| 作者: | 黃貞翰;Huang, Cheng-wen;Lin, Hsing-Ying;Huang, Chen-Han;Shiue, Ren-Jye;Wang, Wei-Hua;Liu, Chih-Yi;Chui, Hsiang-Chen |
| 貢獻者: | 生醫理工學院生醫科學與工程學系 |
| 關鍵詞: | Bilayers;Chemistry and Materials Science;Density;Deposition;Diffusion;Diffusion barriers;Diffusion layers;Free energy;Graphene;Light microscopy;Materials Science;Microscopy;Molecular Medicine;Morphology;Nano Express;Nanochemistry;Nanoparticles;Nanoscale Science and Technology;Nanotechnology;Nanotechnology and Microengineering;Optical microscopy;Raman spectroscopy;Scanning electron microscopy;Silicon dioxide;Silicon substrates;Silver;Surface diffusion |
| 日期: | 2012-01-01 |
| 上傳時間: | 2026-04-23 11:16:48 (UTC+8) |
| 出版者: | Springer New York;New York: Springer New York |
| 摘要: | 摘要： The distributions of sizes of silver nanoparticles that were deposited on monolayer, bilayer, and trilayer graphene films were observed. Deposition was carried out by thermal evaporation and the graphene films, placed on SiO 2 /Si substrates, were obtained by the mechanical splitting of graphite. Before the deposition, optical microscopy and Raman spectroscopy were utilized to identify the number of the graphene layers. After the deposition, scanning electron microscopy was used to observe the morphologies of the particles. Systematic analysis revealed that the average sizes of the nanoparticles increased with the number of graphene layers. The density of nanoparticles decreased as the number of graphene layers increased, revealing a large variation in the surface diffusion strength of nanoparticles on the different substrates. The mechanisms of formation of these layer-dependent morphologies of silver on n-layer graphene are related to the surface free energy and surface diffusion of the n-layer graphene. The effect of the substrate such as SiO 2 /Si was investigated by fabricating suspended graphene, and the size and density were similar to those of supported graphene. Based on a comparison of the results, the different morphologies of the silver nanoparticles on different graphene layers were theorized to be caused only by the variation of the diffusion barriers with the number of layers of graphene.
其他題名： Nanoscale Res Lett
出版者： New York: Springer New York
出版日期： 2012-11-09
出處： Nanoscale research letters, 2012-11, Vol.7 (1), p.618-618, Article 618
資源來源： Publicly available content database
版權： Huang et al.; licensee Springer. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
版權： Copyright Springer Nature B.V. Dec 2012
版權： Copyright © 2012 Huang et al.; licensee Springer. 2012 Huang et al.; licensee Springer.
識別號： ISSN: 1556-276X
識別號： ISSN: 1931-7573
識別號： EISSN: 1556-276X
識別號： DOI: 10.1186/1556-276X-7-618
識別號： PMID: 23140587 |
| 顯示於類別: | [生醫科學與工程學系] 期刊論文
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