Interfaces between a liquid and a solid (L–S) are the most important surface science in
chemistry, catalysis, energy, and even biology. Formation of an electric double layer (EDL) …

Triboelectric properties of materials play an essential role in liquid energy harvesting and
emerging application. The triboelectric properties of materials can be controlled by chemical …

As a well‐known phenomenon, contact electrification (CE) has been studied for decades.
Although recent studies have proven that CE between two solids is primarily due to electron …

Polymers are commonly used to fabricate triboelectric nanogenerators (TENGs). Here,
several polymer films with similar main chains but different functional groups on the side …

Droplet manipulation has gradually drawn worldwide attention through diverse potential
applications such as microfluidics, and medical diagnostic test. Whereas, the high‐precision …

Water as an important renewable resource widely exists in human life in the form of
raindrops, rivers, oceans, and so on. The efficient utilization of water energy has always …

We investigate the charge separation caused by the motion of a water drop across a
hydrophobic, insulating solid surface. Although the phenomenon of liquid charging has …

Water drops on insulating hydrophobic substrates can generate electric potentials of
kilovolts upon sliding for a few centimeters. We show that the drop saturation voltage …

A metal electrode covered by an inert, hydrophobic polymer surface is dipped into water,
and the charge transfer was measured as a function of ion concentration for different …

Liquid–polymer contact electrification between sliding water drops and the surface of
polytetrafluoroethylene (PTFE) was studied as a function of the pH and ionic strength of the …