Alternative Energy

Highlights

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Power

Not a Joke: Harvest Energy from the Cold Night Sky

Applying the physics principle of radiative sky cooling, a team was able to harvest a small but useful amount of energy from the cool night sky using a simple, low-cost, non-critical...
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Power

Semi-Liquid Metal Anode Yields Higher-Capacity, Safer Lithium Batteries

This lithium battery, developed by Carnegie Mellon researchers, uses a semi-liquid, metal-based lithium anode that prevents hazardous dendrite formation found on anodes using ...
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Automotive

High-Voltage Plasma Succeeds in Aircraft-Wing Deicing

By using a plasma created by high voltage moving across a wing’s surface, researchers devised and tested a technique for deicing aircraft wings that doesn’t rely on diverted engine...
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Power

Hybrid Cathode Synergy Yields Sharply Improved Li-S Battery Metrics

A new cathode implementation for lithium-sulfur batteries uses a hybrid of materials and fabrication techniques, greatly improving weight and energy density specifications versus...
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Power

Componentized Direct-Drive Electric Generator Targets New and Refurbished Wind Turbines

Now becoming available for large wind-turbine systems are less expensive, lightweight, and higher-performing alternatives to the low-speed, rare-earth permanent-magnet direct-...
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Power

Liquid-Metal Triboelectric Nanogenerator Harvests Body Motion

Researchers developed a friction-based transducer comprised of liquid metal and a polymer-layer sandwich that can harvest energy of low-frequency motion, such as from a body.
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Power

Lightest Vehicle Ever Achieves Fully Untethered Flight

After six years of work, a team at Harvard has built an insect-like solar-powered aerial vehicle that flies untethered and weighs under 260 mg.
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Power

A Low-Cost Alternative to Rare-Earth Permanent-Magnet Electric Motors

This brushless synchronous doubly-fed electric machine system is less expensive but more robust and higher performing than its rare-earth permanent-magnet counterpart.
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Power

A Peek Inside the KSU Nuclear Reactor

Paul Rako had the opportunity to tour Kansas State University’s “TRIGA” nuclear reactor, which serves an educational facility for students and researchers alike.
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Automotive

Portland’s New Electric Buses Recharge Using Renewable Wind Energy

Pilot project buses will reduce greenhouse gas emissions by about 100 to 140 tons per year compared to a standard 40-ft. diesel bus.