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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.

Neurotoxicological hazard assessment without animal testing

The development of our nervous system in the womb and during the first years of life is a highly complicated process: Nerve cells proliferate by cell division, specialize, change their position in the tissue and interconnect ...

The surprising strength of liquid crystals

Dendrites are the destructive by-products of the cycle of charging and discharging lithium ion batteries. These tiny deposits form between the battery's anode and cathode, building up over time. Inevitably, they diminish ...

Scientists develop a lithium-ion battery that won't catch fire

A flexible lithium-ion battery designed by a team of researchers from the Johns Hopkins Applied Physics Laboratory and built to operate under extreme conditions—including cutting, submersion, and simulated ballistic impact—can ...

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