Near zero carrier density graphene exhibits positive photoconductivity and negative photoconductivity at high carrier density.
2.
Despite zero carrier density near the Dirac points, graphene exhibits a minimum conductivity on the order of 4e ^ 2 / h.
3.
However, the 1st Air Fleet at that time only had 40 aircraft : 34 Mitsubishi A6M Zero carrier-based fighters, three Nakajima B6N " Tenzan " ( " Jill " ) torpedo bombers, one Mitsubishi G4M ( " Betty " ) and two Yokosuka P1Y " Ginga " ( " Frances " ) land-based bombers, and one additional reconnaissance aircraft . The task facing the Japanese air forces seemed impossible.
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