Precision experiments reveal gaps in van der Waals theory

Science Daily  February 16, 2018
An international team of researchers (Denmark, Japan) measured a single TiS2 crystal to show that the interlayer interactions are in fact stronger than theory indicates, and involve significant electron sharing. The outstanding agreement of the synchrotron diffraction data with theoretical calculations in describing the intralayer Ti-S interactions, supports the validity of these new-found differences for the long-range interactions across the interlayer gaps. The research contributes to the fundamental understanding of weak chemical bonding in 2D layered materials in general, and to the development of TMD materials… read more. TECHNICAL ARTICLE