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We study the properties of moving breathers in a bent DNA model with short range interaction, due to the stacking of the base pairs, and long range interaction, due to the finite dipole moment of the bonds within each base pair. We show that the movement of a breather is hindered by the bending of the chain analogously to a particle in a potential barrier. [Copyright &y& Elsevier]

• We examine -experimentally and numerically- a two-dimensional nonlinear driven electrical lattice with honeycomb structure. • We identify discrete breathers existing in the bulk and at the boundaries, either along the arm-chair or the zig-zag edges. • Edge-localized breathers near the Dirac-point frequency while driving homogeneously the lattice subharmonically. • This work can represent a starting point towards research of the interplay of nonlinearity and topology in a tractable system. We examine - both experimentally and numerically - a two-dimensional nonlinear driven electrical lattice with honeycomb structure. Drives are considered over a range of frequencies both outside (below and above) and inside the band of linear modes. We identify a number of discrete breathers both existing in the bulk and also (predominantly) ones arising at the domain boundaries, localized either along the arm-chair or along the zig-zag edges. The types of edge-localized breathers observed and computed emerge in distinct frequency bands near the Dirac-point frequency of the dispersion surface while driving the lattice subharmonically (in a spatially homogeneous manner). These observations/computations can represent a starting point towards the exploration of the interplay of nonlinearity and topology in an experimentally tractable system such as the honeycomb electrical lattice. [ABSTRACT FROM AUTHOR]