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Electrons Surf Phason Waves in Moiré Bilayers

Phasons are a particular type of collective motion of atoms that occur in aperiodic structures such as quasicrystals. The interaction between phasons and other collective excitations within a material leads to fascinating thermal and electronic transport phenomena. Recently, twisted moiré…

Nanoscale friction of biomimetic hair surfaces

The smoothness and feel of human hair are strongly influenced by the friction between strands. Typically, friction is controlled by surface roughness across a wide range of length scales. In this work, we study the nanoscale friction between two model…