Proceedings of the Royal Society of London. Series B, Biological Sciences, Vol. 152, No. 948 (Jun. 14, 1960), pp. 397-409 (13 pages) Intraspecific variation may be continuous, or it may be quantized, ...
Quantized conductance — whereby the current through a wire changes in a stepwise, rather than continuous manner — has been seen in very narrow ribbons of graphene for the first time. The discovery was ...
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