Reentrant feature widely exists in natural structures ranging from mushroom, overhang,
undercut, trapezoid, sphere, spatula and taper to sharp edge, and has triggered a …

Nature is a school for scientists and engineers. After four and a half billion years of stringent
evolution, some creatures in nature exhibit fascinating surface wettability. Biomimetics …

Multiple biological structures have demonstrated fog collection abilities, such as beetle
backs with bumps and spider silks with periodic spindle-knots and joints. Many Cactaceae …

We discuss in this review how the roughness of a solid impacts its wettability. We see in
particular that both the apparent contact angle and the contact angle hysteresis can be …

We showed directional adhesion on the superhydrophobic wings of the butterfly Morpho
aega. A droplet easily rolls off the surface of the wings along the radial outward (RO) …

The illumination of azobenzene molecules with UV/visible light efficiently converts the
molecules between trans and cis isomerization states. Isomerization is accompanied by a …

While the behaviour of large amounts of liquid is dictated by gravity, surface forces become
dominant at small scales. They have for example the remarkable ability to make droplets …

Fog harvesting is a useful technique for obtaining fresh water in arid climates. The wire
meshes currently utilized for fog harvesting suffer from dual constraints: coarse meshes …

The surface wettability control of solid materials has been considered as an essential aspect
of surface chemistry. In the past decade, superhydrophobic surfaces have revealed a …

The Cassie–Baxter model is widely used to predict the apparent contact angles obtained on
composite (solid–liquid–air) superhydrophobic interfaces. However, the validity of this model …