Collapse of double-walled carbon nanotube bundles under hydrostatic pressure
نویسندگان
چکیده
Vikram Gadagkar,1 Prabal K. Maiti,2,* Yves Lansac,3 A. Jagota,4 and A. K. Sood1,* 1Department of Physics, Indian Institute of Science, Bangalore 560012, India 2Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India 3LEMA, UMR 6157 CNRS-CEA, Université François Rabelais, 37200 Tours, France 4Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, USA Received 28 September 2005; revised manuscript received 28 November 2005; published 2 February 2006
منابع مشابه
Pressure Effects on Single Wall Carbon Nanotube Bundles
We report high pressure Raman studies on single wall carbon nanotube bundles under hydrostatic conditions using two different pressure transmitting media, alcohol mixture and pure water. The radial and tangential modes show a blue shift when SWNT bundle is immersed in the liquids at ambient pressures. The pressure dependence of the radial modes is the same in both liquids. However, the pressure...
متن کاملSmall Scale Effect on the Buckling Analysis of a Double-Walled Carbon Nanotube under External Radial Pressure Using Energy Method
In this paper, using energy method, small scale effects on the buckling analysis of a double-walled carbon nanotube (DWCNT) under external radial pressure is studied. The constitutive equations derived for a DWCNT using the nonlocal theory of elasticity which Eringen are presented for the first time. By minimizing the second variation of the total energy for a DWCNT, hence, the value of the non...
متن کاملPressure-induced transition in magnetoresistance of single-walled carbon nanotubes.
We applied hydrostatic pressure (up to 10 GPa) to single-walled carbon nanotube bundles at low temperature (down to 2 K) to measure their magnetoresistance (MR) in a field up to 12 T. We found a pressure-induced transition in MR from positive to negative in the high-field regime. The onset of the transition occurs at approximately 1.5 GPa, which correlates closely with the tube shape transition...
متن کاملTransport Properties For Carbon Nanotubes Under Hydrostatic Pressure
Multi-wall carbon nanotubes (MWNTs) were mixed with polystyrene (PS) by 20 wt%, which is slightly above the percolation threshold. Temperature (T ) dependencies of Seebeck coefficient (S) and resistance (R) for the sample (MWNT-PS) were measured under hydrostatic pressure upto 1.2 GPa. The resistance at ambient pressure showed power law T -dependence (R ∝ T−α) and agreed well with Luttinger liq...
متن کاملEffective wall thickness of a single-walled carbon nanotube
This paper investigates the effective wall thickness of a single-walled carbon nanotube, a critical quantity for any research in mechanics and property characterization of carbon nanotubes. To this end, the response of a bundle of single-walled carbon nanotubes to external hydrostatic pressure was modeled using the ring theory of continuum mechanics. The model predicted that the equivalent thic...
متن کامل