If solar cells could generate higher voltages when sunlight falls on them, they'd produce more electrical power more efficiently. For over half a century scientists have known that ferroelectrics, materials whose atomic structure allows them to have an overall electrical polarization, can develop very high photovoltages under illumination
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Feed SubscriptionMenu nutrition labels don’t change habits
Letting consumers know exactly how many calories are in their food might do little to change their eating habits, a new study suggests.
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