Implantable batteries can run on the body's own oxygen

From pacemakers to neurostimulators, implantable medical devices rely on batteries to keep the heart on beat and to dampen pain. But batteries eventually run low and require invasive surgeries to replace.

A novel technique for creating superhydrophobic surfaces

Superhydrophobic surfaces, characterized by their ability to repel water with a contact angle above 150° and a sliding angle below 10°, offer a range of applications from self-cleaning and anti-corrosion to oil/water separation ...

Control over friction, from small to large scales

Friction is hard to predict and control, especially since surfaces that come in contact are rarely perfectly flat. New experiments demonstrate that the amount of friction between two silicon surfaces, even at large scales, ...

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