Friction is a phenomenon that exists extensively in nature and industry; it has proven
necessary in daily life and beneficial in energy scavenging but is also alleged to be the main …

The topic of superlubricity is attracting considerable interest around the world while
humanity is facing an energy crisis. Since various liquid superlubricity systems can be …

The strength origin of CSH matrix is a key question in cement and concrete research, which
remains largely unclear despite a century of study. Here we present a novel approach to …

Macromolecules, which adsorb or intrinsically form boundary layers at surfaces sliding past
each other in aqueous media, are ubiquitous both in technology and in biological systems …

Current models for lubrication of synovial joints, and the nature of the cartilage surface, are
briefly recalled. Direct friction studies between polymers attached to surfaces are then …

Zwitterionic polymers constitute a unique class of polyelectrolytes which have not been
studied systematically because of the difficulty in their controlled synthesis and precise …

The lubrication of synovial joints is extremely efficient, allowing smooth motion to be
performed between relatively soft and vulnerable cartilage surfaces for close to 100 years. A …

Thin film lubrication (TFL), a lubrication regime that fills the gap between boundary
lubrication (BL) and elastohydrodynamic lubrication (EHL) regimes, was proposed 20 years …

The distribution and dynamics of water molecules and monovalent cations (Li+, Na+, K+,
Cs+, and H3O+) on muscovite surfaces were investigated by molecular dynamics (MD) …

Friction drag is a nonnegligible matter when relative motion happens between solid and
liquid phase, which brings many inconveniences in ship navigation, fluid transportation …