Secondary Ion Mass Spectrometry Study of Thermal Diffusion of Au Nanoparticles in Porous SiO2 Matrices
- Authors
- Kwon, Oh-Sun; Lee, Yeon-Hee; Hong, Kwangpyo; Kim, Jaeyong; Shin, Kwanwoo
- Issue Date
- May-2011
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Nanoparticles; Low Dielectric Materials; Diffusion Constant; Secondary Ion Mass Spectrometry
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.5, pp.4400 - 4405
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 11
- Number
- 5
- Start Page
- 4400
- End Page
- 4405
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/151303
- DOI
- 10.1166/jnn.2011.3635
- ISSN
- 1533-4880
- Abstract
- Migration of Au nanoparticles by thermal diffusion into porous SiO2 matrix substrates has been studied using secondary ion mass spectroscopy (SIMS). When the samples having four different porosities were annealed at T = 410 K for 1.5 h, no noticeable variations in the thermal diffusion of Au nanoparticles were observed. All the measured diffusion coefficients of Au particles, were an order of 10(-15) cm(2)/s at 300-410 K in a very limited interfacial region. Regardless of their porosities, the pores must be discontinuous, which acts as a diffusion barrier to block the continuous diffusion of Au particles.
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