Direct synthesis of sp-bonded carbon chains on graphite surface by femtosecond laser irradiation
Hu, Aming, Rybachuk, Maksym, Lu, Q-B., & Duley, W.W. (2007) Direct synthesis of sp-bonded carbon chains on graphite surface by femtosecond laser irradiation. Applied Physics Letters, 91(13).
Microscopic phase transformation from graphite to sp-bonded carbon chains (carbyne) and nanodiamond has been induced by femtosecond laser pulses on graphite surface. UV/surface enhanced Raman scattering spectra and x-ray photoelectron spectra displayed the local synthesis of carbyne in the melt zone while nanocrystalline diamond and trans-polyacetylene chains form in the edge area of gentle ablation. These results evidence possible direct "writing" of variable chemical bonded carbons by femtosecond laser pulses for carbon-based applications.
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|Item Type:||Journal Article|
|Keywords:||diamond, laser beam effects, laser materials processing, Raman spectra, solid, state phase transformations, X, ray photoelectron spectra|
|Subjects:||Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > ATOMIC MOLECULAR NUCLEAR PARTICLE AND PLASMA PHYSICS (020200) > Atomic Molecular Nuclear Particle and Plasma Physics not elsewhere classified (020299)|
Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OPTICAL PHYSICS (020500) > Lasers and Quantum Electronics (020502)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Materials Engineering not elsewhere classified (091299)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2007 American Institute of Physics|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||08 Oct 2008|
|Last Modified:||29 Feb 2012 23:39|
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