The fine structure constant, alpha, is undoubtably the most fundamental dimensionless constant in physics, relating electromagnetism, relativity, and quantum physics. Electrons in graphene behave like Dirac fermions, permitting analogous phenomena from high energy physics to be reproduced in a table-top experiment. Theory predicts that the light absorption of graphene is given by the fine structure constant multiplied by pi, yielding an absorption coefficient defined by universal constants independent of any materials properties. This has recently been observed in graphene experiments.
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Негізгі бет Seeing the fine structure constant in graphene with light
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