Nanowerk November 3, 2022
By performing measurements on bulk graphite, and on epitaxial graphene films on SiC with different stacking orders and twisting, as well as in the presence of intercalated hydrogen an international team of researchers (USA – New York University, Italy, Czech Republic) found that the interfacial transverse shear modulus was critically controlled by the stacking order and the atomic layer–substrate interaction. They demonstrated that the modulus is a pivotal measurable property to control and predict sliding friction in supported two-dimensional materials. Their experiments demonstrated a reciprocal relationship between friction force per unit contact area and interfacial shear modulus. The study may lead to a deeper understanding of energy dissipation in friction and the design of two-dimensional materials capable of minimizing energy loss…read more. TECHNICAL ARTICLE
Correlation between friction force and interfacial shear modulus. Credit: Nature Nanotechnology (2022)Â