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Pressure‐induced phenomena in single‐walled carbon nanotubes
Author(s) -
Kuntscher C. A.,
Thirunavukkuarasu K.,
Pekker Á.,
Kamarás K.,
Hennrich F.,
Kappes M.,
Iwasa Y.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200776169
Subject(s) - carbon nanotube , materials science , transmittance , absorption (acoustics) , phase transition , deformation (meteorology) , carbon fibers , range (aeronautics) , chemical physics , nanotechnology , molecular physics , condensed matter physics , composite material , optoelectronics , chemistry , composite number , physics
Abstract Pressure‐dependent transmittance measurements on films of unoriented and oriented single‐walled carbon nanotubes were carried out at room temperature in the midinfrared up to the visible frequency range. The optical transitions in the SWNTs show anomalies at around 2 GPa, which can be attributed to a structural phase transition. The shift to lower frequencies and broadening of the absorption bands with increasing pressure could be attributed to the structural deformation of the SWNTs. We found no indications for a pressure‐induced dimensional crossover in the oriented SWNTs. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)