Aug 1, 2019 · In this work, we report atomic-scale observations of multiwalled CNT (MWCNT) growth and termination at near ambient pressure by in situ transmission electron microscopy.

Dec 7, 2022 · In this study, we directly investigated the growth process and mechanism of CNTs from the Co-W-C alloy catalyst NPs in a windowed environmental cell (E-cell) under atmospheric pressure inside a TEM.

Nov 1, 2020 · We have developed a robust and efficient tool to obtain in a very simple way the CNT chirality from raw HRTEM images. Based on a classification method using CNNs, the determination of the chirality of CNTs is fast enough to provide meaningful statistics on experimentally produced samples.

Nov 2, 2020 · In this work, carbon nanotubes (CNTs)/nitrogen-doped activated carbon (AC) hybrids were designed and fabricated using a facile and one-step synthesis. The synthesis of CNTs is based on the...

... 3 depicts TEM and HRTEM images of the CNTs in a CNT paper. It is evident that the CNTs are presented in a tubular-like structure with a hollow core ( Fig. 3 a). There are Fe...

Mar 1, 2007 · We have successfully resolved and visualized the structure of some chemically functionalized carbon nanotubes (CNTs) using high-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS). To represent the chemically modified CNT, we selected three systems.

Aug 8, 2019 · In this work, we report atomic-scale observations of multiwalled CNT (MWCNT) growth and termination at near ambient pressure by in situ transmission electron microscopy.

SEM and TEM images of the nanocomposites revealed a uniform dispersion of carbon nanotubes throughout the aluminium matrix for 0.75 wt.% of CNT. The CNT are observed through the composite at grain boundary junctions, as expected, but also in the matrix.

Aug 1, 2004 · The as-grown CNTs were bamboo-like in their morphology, and were investigated using SEM and high-resolution transmission electron microscopy (HRTEM). The SEM and HRTEM studies show that the both ends of a CNT contain metallic catalytic particles, which is different from results previously reported.

Mar 25, 2020 · Chiral indices determine important properties of carbon nanotubes (CNTs). Unfortunately, their determination from high-resolution transmission electron microscopy (HRTEM) images, the most accurate method for assigning chirality, is a tedious task. We develop a Convolutional Neural Network that automatizes this process.