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Raman signature to ...
Raman signature to identify the structural transition of single-wall carbon nanotubes under high pressure
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- Yao, Mingguang (författare)
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
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Wang, Zhigang (författare)
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Liu, Bingbing (författare)
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Zou, Yonggang (författare)
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Yu, Shidan (författare)
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Lin, Wang (författare)
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Hou, Yuanyuan (författare)
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Pan, Shoufu (författare)
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Jin, Mingxing (författare)
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Zou, Bo (författare)
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Cui, Tian (författare)
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Zou, Guangtian (författare)
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- Sundqvist, Bertil (författare)
- Umeå universitet,Institutionen för fysik
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(creator_code:org_t)
- American Physical Society, 2008
- 2008
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - : American Physical Society. - 1098-0121 .- 1550-235X. ; 78:20
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Raman spectra of single-walled carbon nanotubes (SWNTs) with diameters of 0.6–1.3 nm have been studied under high pressure. A “plateau” in the pressure dependence of the G-band frequencies was observed in all experiments, both with and without pressure transmission medium. Near the onset of the G-band plateau, the corresponding radial breathing mode (RBM) lines become very weak. A strong broadening of the full width at half maximum of the RBMs just before the onset of the G-band plateau suggests that a structural transition starts in the SWNTs. Raman spectra from SWNTs released from different pressures also indicate that a significant structural transition occurs during the G-band plateau process. Simulations of the structural changes and the corresponding Raman modes of a nanotube under compression show a behavior similar to the experimental observations. Based on the experimental results and the theoretical simulation, a detailed model is suggested for the structural transition of SWNTs, corresponding to the experimentally obtained Raman results in the high-pressure domain.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- carbon nanotubes
- high-pressure effects
- Raman spectra
- solid-state phase transformations
- Condensed matter physics
- Kondenserade materiens fysik
- fysik
- Physics
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- art (ämneskategori)
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Yao, Mingguang
-
Wang, Zhigang
-
Liu, Bingbing
-
Zou, Yonggang
-
Yu, Shidan
-
Lin, Wang
-
visa fler...
-
Hou, Yuanyuan
-
Pan, Shoufu
-
Jin, Mingxing
-
Zou, Bo
-
Cui, Tian
-
Zou, Guangtian
-
Sundqvist, Berti ...
-
visa färre...
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Umeå universitet