By John E. Proctor, Daniel Melendrez Armada, Aravind Vijayaraghavan
"This e-book introduces the reader to the technological know-how of graphene and carbon nanotubes. The reader will achieve the elemental medical wisdom to seriously assessment the claims made within the literature and within the public enviornment concerning the actual homes and power for purposes of graphene and carbon nanotubes. additionally, the booklet makes use of those uncomplicated platforms as first-class versions to illustrate vital techniques in sturdy nation physics and fabrics chemistry to the reader. The e-book is co-authored through one of many leaders in public engagement on the nationwide Graphene Institute at Manchester college, which used to be based in honour of the Nobel Laureate Sir Andre Geim"-- Read more...
summary: "This booklet introduces the reader to the technological know-how of graphene and carbon nanotubes. The reader will achieve the fundamental clinical wisdom to severely overview the claims made within the literature and within the public area in regards to the actual houses and capability for functions of graphene and carbon nanotubes. furthermore, the e-book makes use of those easy platforms as very good types to illustrate vital options in sturdy nation physics and fabrics chemistry to the reader. The booklet is co-authored via one of many leaders in public engagement on the nationwide Graphene Institute at Manchester collage, which used to be based in honour of the Nobel Laureate Sir Andre Geim"
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Extra resources for An introduction to graphene and carbon nanotubes
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Take, for instance, the example of copper. 8 × 105 ms−1. In tungsten, the Fermi velocity is expected to be vF ≈ 4−5 × 105 ms−1 . However, the electron drift velocity in metals such as these is ~1 mms−1 – in this case a factor of 108 lower than the Fermi velocity! This is all due to scattering of electrons from defects and thermal motion of the ions rendering their motion diffusive rather than ballistic. If we wanted to build a miniature electronic circuit using atomically narrow copper wires (say five atomic layers thick), we would expect the drift velocity to decline still further – the extremely large surface area-to-volume ratio would have the same effect as the introduction of many more defects.
Whilst the hypothetical carbyne chain of sp-hybridized carbon is a chain of identical atoms, the primitive unit cell of the graphene lattice consists of two non-identical atoms (A and B): The B atom has the same hybridized orbitals as the A atom, but rotated through 180°. 9) 3 3 = ù 1 2é 3 1 Y ( 2s ) + Y ( 2 px ) - Y ( 2 p y ) ú ê 3ë 2 2 3 û = ù 1 2é 3 1 Y ( 2s ) Y ( 2 px ) + Y ( 2 p y ) ú ê 3ë 2 2 3 û The final (but very important) matter we must discuss relating to sp2 hybridization is the fate of the electron in the Ψ(2pz) orbital, the orbital which does not take part in hybridization.
An introduction to graphene and carbon nanotubes by John E. Proctor, Daniel Melendrez Armada, Aravind Vijayaraghavan