Engineering

Sound-powered sensors stand to save millions of batteries

Sensors that monitor infrastructure, such as bridges or buildings, or are used in medical devices, such as prostheses for the deaf, require a constant supply of power. The energy for this usually comes from batteries, which ...

Energy & Green Tech

Electromobility: A second life for electric motors

An increasing number of electric cars are being sold, consequently raising the quantity of produced electric motors. At the end of their useful life, these electric motors are shredded and then recycled. The individual components ...

Engineering

Novel process extracts rare earth elements from waste

Rare earth elements (REE), a group of 17 metallic elements, are in nearly every piece of technology, including cell phones, televisions, computers and almost every part of a vehicle. The demand for these elements increases ...

Energy & Green Tech

Greening global economy brings dependence on critical minerals

After nearly a century of geopolitical tension over access to oil, experts worry that the global transition to clean energy is creating new dependencies on the critical minerals needed for solar panels, wind turbines and ...

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