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Carbon Nanotechnology: Recent Developments in Chemistry, by Liming Dai PhD

By Liming Dai PhD

Nanotechnology isn't any longer a simply social speaking aspect and is starting to impact the lives of every person. Carbon nanotechnology as an important shaper of recent nanotechnologies has developed right into a really interdisciplinary box, which encompasses chemistry, physics, biology, drugs, fabrics technological know-how and engineering. it is a box during which a major volume of literature has been generated inside of fresh years, and the variety of guides continues to be expanding each year. Carbon Nanotechnology goals to supply a well timed insurance of the hot improvement within the box with up to date stories and comments by means of world-renowned specialists. meant to be an exposition of state of the art study and improvement instead of one of those convention continuing, Carbon Nanotechnology should be very worthwhile not just to skilled scientists and engineers, who desire to develop their wisdom of the wide-ranging nanotechnology and/or to strengthen useful units, but in addition to graduate and senior undergraduate scholars who glance to make their mark during this box of the longer term.

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Extra resources for Carbon Nanotechnology: Recent Developments in Chemistry, Physics, Materials Science and Device Applications

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These workers found that the formation of cylinders is favored by both entropy and enthalpy. It is possible that this could serve to nucleate the growth of multilayers by cladding as in the mechanism of lijima et al. AmeUnckx et al. [107] employ the concept of a spatial velocity hodograph to describe the extrusion of a carbon tubule from a catalytic particle. The model is consistent with the observed tubule shapes and explains how spontaneous plastic deformation of a tubule can occur. These workers propose a model in which the graphene sheets can form both concentric cylinders and scroll-type structures.

M. Ajayan, T. W Ebbesen, T Ichihashi, S. lijima, K. Tanigaki and H. Hiura, Nature 362 (1993) 522. S. C. Tsang, P J. F. Harris and M. L. H. Green, Nature, 362 (1993) 520. (a) T W Ebbesen and P M. Ajayan, Nature 358 (1992) 220; (b) Y Ando, X. Zhao, T Sugai and M. Kumar, Mater. Today 7 (2004) 22; and the references therein. N. Hatta and K. Murata, Chem. Phys. Lett. 217 (1994) 398. D. T Colbert, J. Zhang, S. M. McClure, P Nikolaev, Z. Chen, J. H. Hafner, D. W Owens, P. G. Kotula, C. B. Carter, J. H.

Most of the metal nanoparticles get dissolved on acid washing, but the nanotubes are covered with amorphous carbon as seen in the TEM image in Fig. 12b. The amorphous carbon is removed by high-temperature hydrogen treatment and the remaining small metal nanoparticles agglomerate into larger particles. The absence of amorphous carbon is revealed from the TEM image in Fig. 12c. TEM images also suggest that the bundles grow in size and have diameters in the range of 20-50 nm after the hydrogen treatment.

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