number of concentric shells; but the normal carbon-arc synthesis10,11yields a range of tube types. In particular, most calculations have been concerned with single-shell tubes, whereas the carbon-arc synthesis produces almost entirely multi-shell tubes. Here we report the synthesis of abundant ...
Carbon has two electron shells, with the first holding two electrons and the second holding four out of a possible eight spaces. When atoms bond, they share electrons in their outermost shell. Carbon has four empty spaces in its outer shell, enabling it to bond to four other atoms. (It ...
Here we report more than 70 wt % of iron-catalyzed wood char is filled with chained carbon shells formed by 3~20 defective stacking layers of carbon hexagonal planes, which look like nanometer-sized worms swarm. We name them "carbon shell chains". The discussion of the ...
P. A critical review of the role of carbon nanotubes in the progress of next-generation electronic applications. J. Electron. Mater. 51, 2786–2800 (2022). Article ADS CAS PubMed PubMed Central Google Scholar Choi, C. et al. Twistable and stretchable sandwich structured fiber for wearable...
Besides, the terahertz imaging system based on CNT has promised the non-destructive detection of industrial products [22]. Hardware true random number generators (TRNGs) are utilized to generate encryption keys for allowing access to sensitive data. The Internet of Things requires flexible true ...
The electromagnetic behavior of multiwall carbon nanotubes (MWCNTs), in the frequency range where only intraband transitions are allowed, depends on the combinations of different aspects: the number of effective conducting channels of each shell, the electron tunneling between adjacent shells, and the ...
Carbon aerogel has a very high number of micropores and shows great promise as an electrode material. In order to be able to use all the micropores the carbon aerogel is dependent on an open structure where there is a small number of closed cavities. • Carbon aerogels have been proved ...
The layer number is of great importance for nanocarbon materials, such as carbon nanotubes (CNTs) and graphene. While simple optical methods exist to evaluate few-layer graphene, equivalent analysis for CNTs is limited to transmission electron microscopy. We present a simple macroscopic method based...
This excellent performance is mainly deriving from the large number of holes of various sizes range distributed in the samples. The presence of micropores and mesopores not only greatly improves the contact surface with air, increasing the space charge polarization, but also reduces the bulk density...
, where n is the number of shells in the CNT, dj is the diameter of the j-th nanotube shell, and δ = 0.335 nm is the interplanar spacing of graphite. For SWCNT, the upper equation reduces to A = πdδ and P = πd. The A of SWCNT also accounts for the cross-sectional area ...