We have assembled molecular arrays of C60 inside double-walled carbon nanotubes (DWNTs) with internal diameters of 11-26 A and directly observed the existence of different crystalline phases of C60 previously predicted theoretically. The structure of the encapsulated C60 crystal is defined by the internal diameter of the DWNT, as the molecules adjust their packing arrangement in order to maximi...

Submitted for the MAR10 Meeting of The American Physical Society A hybrid density functional study of double walled armchair SiC nanotubes1 KAPIL ADHIKARI, ASOK RAY, Department of Physics, University of Texas Arlington — As a continuation of our studies of single walled SiC nanotubes,2 we report here a systematic study of double walled armchair type1 SiC nanotubes using the finite cluster appro...

The wafer scale integration of carbon nanotubes (CNT) remains a challenge for electronic and electromechanical applications. We propose a novel CNT integration process relying on the combination of controlled capillary assembly and buried electrode dielectrophoresis (DEP). This process enables us to monitor the precise spatial localization of a high density of CNTs and their alignment in a pre-...

This paper is concerned with the buckling of double-walled carbon nanotubes (DWCNTs) under axial load. The DWCNTs are modelled as two cylindrical shells, one shell nested in the other and Winkler springs are introduced to connect them in order to simulate the van der Waals forces between the two nanotubes. By using the Donnell thin shell theory, we derive the governing equations for the bucklin...

The resistance standard described by James L. Thomas [1] was the result of his extensive effort to develop a new standard by systematically investigating every factor affecting the stability of resistance— time, surface effects, temperature, power, pressure— detectable at the time. The result was a unique standard which was used as part of the National Reference Group of resistors beginning in ...

In a sample produced by catalytic chemical vapor deposition (CCVD), the structure of the carbon nanotubes (diameter and helicity) which governs their electronic properties, is determined by electron diffraction. We found that most of the smallest bundles are constituted of identical double-walled carbon nanotubes.

Weld type between parts will make a difference on structural performance, which is especially important for daouble-walled shell. To get clear this problem, numerical simulation conducted to investigate the influence of weld plans frame and out shell stress stability. Numerical results show that change plan small in case 15MPa external pressure, below critical value, ultimate bearing capacity c...

the present report describes a male newborn with a pulsatile structure beneath the sternum. echocardiography showed common atrium, a single ventricle, mitral atresia, double outlet right ventricle, subpulmonary stenosis, small pulmonary artery branches, and a thin walled ventricular diverticulum suggestive of cantrell's syndrome. the diverticulum was resected to prevent life threatening events ...