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Most studies on moiré superlattices formed from a stack of h-BN (two-dimensional hexagonal boron nitride) and graphene have focused on single layer graphene; graphene with multiple layers is less understood. Here, we show that a moiré superlattice of multilayer graphene shows features arising from the anisotropic Fermi surface affected by the superlattice structure. The moiré superlattice of a h-BN/AB-stacked tetralayer graphene heterostructures exhibited resistivity peaks showing a complicated dependence on the perpendicular electric field. The peaks were not due to secondary Dirac cones forming, but rather opening of the energy gap due to folding of the anisotropic Fermi surface. In addition, superlattice peaks resulted from mixing of light- and heavy-mass bilayer-like bands via the superlattice potential. The gaps did not open on the boundary of the superlattice Brillouin zone, but rather opened inside it, which reflected the anisotropy of the Fermi surface of multilayer graphene.

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: An algorithm to produce handing motion from a robot to a human receiver is proposed in this paper. The algorithm includes three elements to generate cooperative motion of the robot to the human. The first is an introduction of a delay time into the start of robot's motion and its recovery. The second is a control law of the robot which is based on imitation of the motion of the human. The third is a trajectory generation to realize relative positional relation between the robot and the human at the moment of handing an object over. In addition, a system to support positioning of the robot to the desirable target position where handing over an object will be conducted to decrease human load is also introduced.