Water is one of the most sustainable resources in the world, offering an abundance of hydro
energy. Getting a large amount of electricity through conventional water energy harvesting is …

Polymer electrets have revealed great potential application in electromechanical devices
because of the low weight, large quasi‐piezoelectric sensitivity, and excellent flexibility. For …

Conventional nanogenerators typically employ displacement current as the driving force to
output alternating current (AC). It is thus inevitable to face a series of complex power …

Directional droplet transport on smart surfaces with superwettabilities arouse extensive
attentions from both the scientific community and industry due to the exciting applications in …

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 …

Triboelectric nanogenerators (TENGs) have received growing attention to efficiently harvest
waste micromechanical energy from ambient atmosphere such as hydrodynamic energy …

Liquid marbles are droplets with volume typically on the order of microliters coated with
hydrophobic powder. Their versatility, ease of use and low cost make liquid marbles an …

A liquid marble is a liquid droplet coated with hydrophobic powder which enables the
marble to be manipulated like a soft solid. Recently, liquid marbles have been used in …

We investigate the contact electrification occurring when a small water droplet resting on a
metal electrode is brought periodically in contact with a hydrophobic film of fluorinated …

Numerous energy harvesting wireless devices that will serve as building blocks for the
Internet of Things (IoT) are currently under development. However, there is still only limited …