A comparative study of microstructure of RuO2 nanorods via Raman scattering and field emission scanning electron microscopy

R. S. Chen; C. C. Chen; Y. S. Huang; C. T. Chia; H. P. Chen; D. S. Tsai; K. K. Tiong

doi:10.1016/j.ssc.2004.06.002

A comparative study of microstructure of RuO₂ nanorods via Raman scattering and field emission scanning electron microscopy

R. S. Chen, C. C. Chen, Y. S. Huang^*, C. T. Chia, H. P. Chen, D. S. Tsai, K. K. Tiong

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Raman scattering (RS) and field emission scanning electron microscopy (FESEM) have been used to extract microstructural information of RuO₂ nanorods (NRs) and a two-phase system comprising NRs embedded in polycrystalline matrix deposited on different substrates by the metal-organic chemical vapor deposition method. The red shifts and asymmetric broadening of the Raman line shape for the NRs are analyzed by the spatial correlation model. The deduced spatial correlation length l is found to be much smaller than that of the average size L₀ estimated from the FESEM images. The Raman features for the two-phase system can be resolved into two parts: a Lorentzian line shape feature corresponding to the polycrystallite at higher frequency side and an asymmetrically broadened NRs' signature located at lower frequency end. The volume fraction of NRs in the two-phase system can be determined from the analysis. These results demonstrate the significance of RS as a structural characterization method when used in conjunction with FESEM.

Original language	English
Pages (from-to)	349-353
Number of pages	5
Journal	Solid State Communications
Volume	131
Issue number	6
DOIs	https://doi.org/10.1016/j.ssc.2004.06.002
Publication status	Published - 2004 Aug

Keywords

A. Nanostructures
C. Field emission scanning electron microscopy
E. Raman scattering

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

Access to Document

10.1016/j.ssc.2004.06.002

Cite this

@article{c2cfeba54a1f4c109d144284914a0bc3,

title = "A comparative study of microstructure of RuO2 nanorods via Raman scattering and field emission scanning electron microscopy",

abstract = "Raman scattering (RS) and field emission scanning electron microscopy (FESEM) have been used to extract microstructural information of RuO2 nanorods (NRs) and a two-phase system comprising NRs embedded in polycrystalline matrix deposited on different substrates by the metal-organic chemical vapor deposition method. The red shifts and asymmetric broadening of the Raman line shape for the NRs are analyzed by the spatial correlation model. The deduced spatial correlation length l is found to be much smaller than that of the average size L0 estimated from the FESEM images. The Raman features for the two-phase system can be resolved into two parts: a Lorentzian line shape feature corresponding to the polycrystallite at higher frequency side and an asymmetrically broadened NRs' signature located at lower frequency end. The volume fraction of NRs in the two-phase system can be determined from the analysis. These results demonstrate the significance of RS as a structural characterization method when used in conjunction with FESEM.",

keywords = "A. Nanostructures, C. Field emission scanning electron microscopy, E. Raman scattering",

author = "Chen, {R. S.} and Chen, {C. C.} and Huang, {Y. S.} and Chia, {C. T.} and Chen, {H. P.} and Tsai, {D. S.} and Tiong, {K. K.}",

note = "Funding Information: The authors would like to thank the financial supports of the National Science Council of Taiwan.",

year = "2004",

month = aug,

doi = "10.1016/j.ssc.2004.06.002",

language = "English",

volume = "131",

pages = "349--353",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

number = "6",

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T1 - A comparative study of microstructure of RuO2 nanorods via Raman scattering and field emission scanning electron microscopy

AU - Chen, R. S.

AU - Chen, C. C.

AU - Huang, Y. S.

AU - Chia, C. T.

AU - Chen, H. P.

AU - Tsai, D. S.

AU - Tiong, K. K.

N1 - Funding Information: The authors would like to thank the financial supports of the National Science Council of Taiwan.

PY - 2004/8

Y1 - 2004/8

N2 - Raman scattering (RS) and field emission scanning electron microscopy (FESEM) have been used to extract microstructural information of RuO2 nanorods (NRs) and a two-phase system comprising NRs embedded in polycrystalline matrix deposited on different substrates by the metal-organic chemical vapor deposition method. The red shifts and asymmetric broadening of the Raman line shape for the NRs are analyzed by the spatial correlation model. The deduced spatial correlation length l is found to be much smaller than that of the average size L0 estimated from the FESEM images. The Raman features for the two-phase system can be resolved into two parts: a Lorentzian line shape feature corresponding to the polycrystallite at higher frequency side and an asymmetrically broadened NRs' signature located at lower frequency end. The volume fraction of NRs in the two-phase system can be determined from the analysis. These results demonstrate the significance of RS as a structural characterization method when used in conjunction with FESEM.

AB - Raman scattering (RS) and field emission scanning electron microscopy (FESEM) have been used to extract microstructural information of RuO2 nanorods (NRs) and a two-phase system comprising NRs embedded in polycrystalline matrix deposited on different substrates by the metal-organic chemical vapor deposition method. The red shifts and asymmetric broadening of the Raman line shape for the NRs are analyzed by the spatial correlation model. The deduced spatial correlation length l is found to be much smaller than that of the average size L0 estimated from the FESEM images. The Raman features for the two-phase system can be resolved into two parts: a Lorentzian line shape feature corresponding to the polycrystallite at higher frequency side and an asymmetrically broadened NRs' signature located at lower frequency end. The volume fraction of NRs in the two-phase system can be determined from the analysis. These results demonstrate the significance of RS as a structural characterization method when used in conjunction with FESEM.

KW - A. Nanostructures

KW - C. Field emission scanning electron microscopy

KW - E. Raman scattering

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