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Harnessing Hotspots

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Harnessing Hotspots

Electronic devices often develop ‘hot spots’ that can become detrimental to performance. Much research has focused on developing methods to cool the system, or, even better, convert the excess heat to electricity by exploiting the thermoelectric effect — where a thermal gradient induces the movement of charge carriers.

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New quantum-dot LED design

By nestling quantum dots in an insulating egg-crate structure, researchers at the Harvard School of Engineering and Applied Sciences (SEAS) have demonstrated a robust new architecture for quantum-dot light-emitting devices (QD-LEDs).

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Silicon and graphene for better batteries

Imagine a cellphone battery that stayed charged for more than a week and recharged in just 15 minutes. That dream battery could be closer to reality thanks to Northwestern University research .

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Dye-sensitized solar cells more efficient than silicon cells

Dye-sensitized Grätzel solar cells have just set a new efficiency benchmark. By changing the composition and color of the cells, an EPFL team has increased their efficiency to more than 12%. Their results have just been published in Science.

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Scientists to develop cheap fuel cells

Fuel cells seem like an ideal energy source—they’re clean, efficient, silent and don’t require transmission lines.

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Converting the energy of waste heat occurring in integrated circuits

The heat which occurs in tiny computer processors might soon be no longer useless or even a problem. On the contrary: It could be used to switch these processors more easily or to store data more efficiently!

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Display screens with colored solar cells

A new kind of screen pixel doubles as a solar cell and could boost the energy efficiency of cell phones and e-readers. The technology could also potentially be used in larger displays to make energy-harvesting billboards or decorative solar panels.

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Power source for implants by breathing energy

Each biological implant is coming up with a kind of power source.

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New cheap nanomaterial to convert heat into electricity

Waste heat is a byproduct of nearly all electrical devices and industrial processes, from driving a car to flying an aircraft or operating a power plant.

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The energy efficiency star is the attribute to a quarter of single American homes

According to the Environmental Protection Agency –EPA, the 25% of all single family homes were energy efficiency star certified in the US last year.

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