Using principle of minimum total potential energy approach in conjunction with Rayleigh-Ritz method, the electro-thermo-mechanical axial buckling behavior of piezoelectric polymeric cylindrical shell reinforced with double-walled boron-nitride nanotube (DWBNNT) is investigated. Coupling between electrical and mechanical fields are considered according to a representative volume element (RVE)-ba...

this paper investigates axial compression process of multi-layered tubes with circular cross-section under the axial loading in the quasi-static condition using experimental method. some specimens are prepared in seven different groups, namely; empty carbon/epoxy composite tubes, solid carbon/epoxy composite rods, empty copper tubes, composite tubes with silicon sealant filler, concentrically s...

1School of Polymer Science and Engineering, Chonnam National University, Gwangju 500-757, Korea 2Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan 3Faculty of Engineering, Shinshu University, Nagano 380-8553, Japan 4Department of Physics, Department of Materials Science and Engineering and Materials Research Institute, The Pennsyl...

Electrical transport properties of individual metallic double-walled carbon nanotubes (DWCNTs) were measured down to liquid helium temperature, and multi-stable conductance states were found in DWCNTs. At a certain temperature, DWCNTs can switch continuously between two or more electronic states, but below certain temperature, DWCNTs are stable only at one of them. The temperature for switching...

The objective of this PhD thesis was the study of friction in carbon nanotubes by analytical methods and molecular dynamics simulations. The goal of this research was to characterize the properties of friction in nanotubes and from a more general point of view the understanding of the microscopic origin of friction. Indeed, the relative simplicity of the system allows us to interpret more easil...

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 Unive...

The low-frequency electronic excitations in double-walled armchair carbon nanotubes are studied within the random-phase approximation. The intertube atomic overlaps significantly affect the low-energy bands and thus enrich the low-frequency single-particle excitations and collective excitations. They induce more plasmon modes, reduce the plasmon strength, and change acoustic plasmons into optic...