We present theoretical and experimental studies of Schottky diodes that use aligned arrays of single-walled carbon nanotubes. A simple physical model, taking into account the basic physics of current rectification, can adequately describe the single-tube and array devices. We show that for as-grown array diodes, the rectification ratio, defined by the maximum-to-minimum-current-ratio, is low du...

Abstract The present research introduces a new configuration of thin-walled nested tube structure as possible energy absorber subjected to lateral compression. nested-tube structures were configured in system comprising four tubes arranged different ways. All the systems quasi-statically compressed direction on universal mechanical tester obtain their absorption characteristics. Two modes defor...

The main objective of this research is to improvethe design and performance of the polyurethane foam-filled thin-walled aluminum grooved circular tubes using multi-response optimization (MRO) technique. The tubes are shaped with the inner and the outer circular grooves at different positions along the axis. For this aim, several numerical simulations using ABAQUS finite element explicit code ar...

In this paper, a new hybrid structure of body-centered cubic lattice-filled thin-walled tube is designed, and the specimens one-piece printing split-printing are prepared by laser melting technique. The deformation mode energy absorption characteristics investigated experiments numerical simulations. Under axial compression, printed forms more wrinkles with smaller wavelengths, specific increas...

Herein, we present the fabrication of multiplexed single-walled carbon nanotube (SWCNT) devices, where selected chiralities were separately immobilized on one chip with single-tube precision. Each chirality was subsequently electrically measured individually. Specifically, (6,5) and (7,5) SWCNT species isolated via aqueous two-phase polymer systems, after which dielectrophoresis used to precise...

The method for the evaluation of the distribution of carbon nanotube sizes from the static adsorption measurements and computer simulation of nitrogen at 77 K is developed. We obtain the condensation/evaporation pressure as a function of pore size of a cylindrical carbon tube using Gauge Cell Monte Carlo Simulation (Gauge Cell MC). To obtain the analytical form of the relationships mentioned ab...

In this paper, crashworthiness characteristics of conical steel tubes stiffened by annular rings and rigid polyurethane foam are investigated. For this purpose, wide circumferential rings are created from the outer surface of the conical tube at some determined areas along tube length. In fact, this method divides a long conical tube into several tubes of shorter length. When this structure is ...