The molecular dynamics simulation of longitudinal twisting of graphene nanoribbons hanging from the edge of a flat substrate formed by the surface of a hexagonal boron nitride crystal has been performed. It has been shown that rotation of the free end of a nanoribbon causes twisting of the suspended region accompanied by monotonous sliding of the nanoribbon over the substrate. At the beginning, a regular screw-like shape is formed in the suspended section, next a super-twisted section emerges inside it, further growth of which occurs due to pulling of the nanoribbon from the substrate. After separation from the substrate, the twisted nanoribbon folds into a roll, so that further twisting results only in free rotation of the roll.

已经进行了石墨烯纳米带的纵向扭曲的分子动力学模拟，该石墨烯纳米带悬挂在由六方氮化硼晶体表面形成的平坦基板的边缘上。已经显示出纳米带的自由端的旋转引起悬浮区域的扭曲，同时纳米带在基板上单调滑动。首先，在悬吊部分形成规则的螺旋状形状，然后在其内部出现超扭曲部分，这是由于纳米带从基板上拉出而导致其进一步生长。与基材分离后，扭曲的纳米带会折叠成卷，因此进一步扭曲只会导致卷自由旋转。