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On August 17, 2017 at 12∶41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation… Expand typically based on n-type metal oxides, our device is solutionprocessed at room temperature, enabling easy processibility over a… Expand This article reviews the basic theoretical aspects of graphene, a one-atom-thick allotrope of carbon, with unusual two… Expand Abstract We review recent work on Raman spectroscopy of graphite and graphene. We focus on the origin of the D and G peaks and… Expand There has been an intensive search for cost-effective photovoltaics since the development of the first solar cells in the 1950s… Expand Metal-insulator transitions are accompanied by huge resistivity changes, even over tens of orders of magnitude, and are widely… Expand Finite graphite systems having a zigzag edge exhibit a special edge state. The corresponding energy bands are almost flat at the… Expand A two-dimensional condensed-matter lattice model is presented which exhibits a nonzero quantization of the Hall conductance… Expand It is pointed out that a global U(1) symmetry, that has been introduced in order to preserve the parity and time-reversal… Expand In a recent note' it was shown that the Goldstone theorem, ' that Lorentz-covaria. nt field theories in which spontaneous… Expand