Taking new angle to enable more efficient, compact fusion power plants

Researchers have demonstrated a new approach for injecting microwaves into a fusion plasma that doubles the efficiency of a critical technique that could have major implications for future fusion reactors. The results show that launching the microwaves into the plasma via a novel geometry delivers substantial improvements in the plasma current drive.

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Double layer of graphene helps to control spin currents

In order to make transistors that operate using the spin of electrons, rather than their charge, it is necessary to find a way of switching spin currents on and off. Furthermore, the lifetime of the spins should at least be equal to the time taken for these electrons to travel through a circuit. Scientists have now taken an important step forward by creating a device that meets both of these requirements.

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How age affects perception of white LED light

Although LEDs are increasingly used in low-energy lighting and displays, consumers sometimes find their light harsh or unpleasant. Findings from a new study point to the need to take age-related perception differences into account when designing white LED lighting that is more pleasing to the eye.

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Scientists reveal mechanism of electron charge exchange in molecules

Through a new scanning transmission electron microscopy method, researchers are able to observe electron distribution between atoms and molecules and uncover clues to the origins of ferroelectricity, the capacity of certain crystals to possess spontaneous electric polarization that can be switched by the application of an electric field. The research also revealed the mechanism of charge transfer between two materials.

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Beyond the 'replication crisis,' does research face an 'inference crisis'?

For the past decade, social scientists have been unpacking a 'replication crisis' that has revealed how findings of an alarming number of scientific studies are difficult or impossible to repeat. Efforts are underway to improve the reliability of findings, but cognitive psychology researchers say that not enough attention has been paid to the validity of theoretical inferences made from research findings.

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Engineers develop thin, lightweight lens that could produce slimmer camera phones, longer-flying drones

Electrical and computer engineering researchers have developed a new kind of optical lens that is much thinner and lighter than conventional camera lenses that also works with night imaging, a future boon for smartphones that could flatten those unsightly 'camera bumps' as well as for drones and night vision cameras for soldiers.

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