This MOVB Echinos (Greek sea urchin) model is applied to the problem of "angle strain". Contrary to common intuition, it is concluded that cyclopropane is strained relative to cyclohexane because, while overall bonding is stronger in cyclopropane, the amount of atomic excitation needed for bond ...
Square millimeters of free-standing graphene do not exist per se because of thermal fluctuations in two-dimensional crystals and their tendency to collapse during the detachment from the substrate. Here we form millimeter-scale freely suspended graphene