Surface roughness has a huge impact on many important phenomena. The most important
property of rough surfaces is the surface roughness power spectrum C (q). We present …

The free surface of a thin soft polymer film is often found to become unstable and self-
organizes into various meso-scale structures. In this article we classify the instability of a thin …

Pitcher plants of the genus Nepenthes have highly specialized leaves adapted to attract,
capture, retain, and digest arthropod prey. Several mechanisms have been proposed for the …

This volume chronicles the proceedings of the Third International Symposium on Contact
Angle, Wettability and Adhesion held in Providence, Rhode Island, May 20a 23, 2002. This …

Charge separation behind moving water drops occurs in nature and technology. Yet, the
physical mechanism has remained obscure, as charge deposition is energetically …

Carnivorous pitcher plants of the genus Nepenthes capture prey with a pitfall trap that relies
on a micro-structured, slippery surface. The upper pitcher rim (peristome) is fully wettable …

Strong adhesion between solids with rough surfaces is only possible if at least one of the
solids is elastically very soft. Some lizards and spiders are able to adhere (dry adhesion) …

Many insects possess smooth adhesive pads on their legs, which adhere by thin films of a
two-phasic secretion. To understand the function of such fluid-based adhesive systems, we …

Dispersion forces are present everywhere. Their importance, however, is largely neglected
because directly at a surface or at an interface they are mostly weak compared with specific …

Rubber friction on wet rough substrates at low velocities is typically 20%–30% smaller than
for the corresponding dry surfaces. We show that this cannot be due to hydrodynamics and …