Uniform goethite nanotubes were synthesized from the reaction of hydrazine with Fe(III)-oleate complex immobilized in reverse micelles. The nanotubes have interesting parallelogram cross section with uniform edge dimension of as small as 7 nm. The edge dimensions and lengths of the nanotubes were easily controlled by varying the reaction conditions.

The multi-scale finite element method is used to study the vibrational characteristics of polymer matrix reinforced by single-walled silicon carbide nanotubes. For this purpose, the nanoscale finite element method is employed to simulate the nanotubes at the nanoscale. While, the polymer is considered as a continuum at the larger scale. The polymer nanotube interphase is simulated by spring ele...

With the advent of nanotechnology in the last decades, there has been an increased number of researches related to the development and application of nanostructures, in special, nanotube. The inorganic nanotubes, such as GaN, AlN and InN, have been studied due to their interesting characteristics, for instance good dielectric properties, good thermal conductivity [1], low displacement density, ...

This topical review summarizes scanning tunneling microscopy investigations of the electronic properties of single-walled carbon nanotubes (SWNTs). First, the unique relationship between the atomic structure and electronic properties of SWNTs is reviewed. Second, the one-dimensional electronic band structure of SWNTs is introduced, and a comparison of tunneling spectroscopy to tightbinding calc...

An effective and versatile method for tube-length-specific functionalization of carbon nanotubes through a controllable embedment of vertically-aligned carbon nanotubes into polymer matrices is reported, which allows not only asymmetric functionalization of nanotube sidewalls, but also facile introduction of new properties (e.g. magnetic) onto the region-selectively functionalized carbon nanotu...

Self-assembling naphthalenediimide (NDI)-based helical organic nanotubes display sergeants-and-soldiers behaviour, chiral monomers imposing a supramolecular structure upon achiral monomers. Several achiral NDI monomers were synthesised and their ability to incorporate into supramolecular nanotubes was studied. Nanotubes containing predominantly the most effective soldier, derived from 1-aminocy...

An L- or D-glutamic acid based bolaamphiphile was found to form uniform helical nanotubes in water, which were used as the template to generate silica nanotubes. The formed silica nanotubes have supramolecular chirality in the inner walls, and were further used to load photoactive azobenzene moieties to realize a chiroptical switch.

Single-wall carbon nanotubes grow along self-assembled nanosteps of annealed miscut C-plane sapphire. Depending on the miscut orientation and annealing conditions, graphoepitaxy leads to the formation of either unprecedentedly straight and parallel nanotubes, with angular deviations as small as +/-0.5 degrees , or to wavy nanotubes loosely conformal to sawtooth-shaped faceted nanosteps.

Nanotubes are formed by self-assembly of α-lactalbumin milk protein following a different route than established for the hydrolysis which involves V8 enzyme, phosphate buffer and appropriate amounts of calcium at neutral pH. The resulting nanotubes are used as templates for the growth of conductive silver nanotubes. TEM, SEM-EDS, AFM and FTIR are used for characterization.

The mechanism of surfactant-assisted dispersion of single-walled carbon nanotubes in water is studied by small-angle neutron scattering. The previously hypothesized formation of cylindrical micelles with the nanotubes forming the core of cylinders is inconsistent with the data presented. The scattering data favor a random structureless adsorption model for the dispersion of the nanotubes.