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The makings of a Hund's metal

In atomic physics, Hund's rules refers to a set of guidelines which are used to determine the term symbol that corresponds to the ground state of a multi-electron atom.

Posted: Nov 10th, 2015

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Clay makes better high-temp batteries

A unique combination of materials, including a clay-based electrolyte, may solve a problem for rechargeable lithium-ion batteries destined for harsh environments.

Posted: Nov 10th, 2015

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Ultra-thin, tunable, broadband microwave absorber may advance radar cloaking

Researchers have developed an ultra-thin, tunable broadband microwave absorber for ultra-high frequency applications. This ultra-thin absorbing surface, called an active frequency-selective surface absorber, consists of arrays of patterned conductors loaded with two common types of circuit elements known as resistors and varactors.

Posted: Nov 10th, 2015

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Sea urchin spurs new ideas for lightweight materials

Materials researchers love sea creatures. Mother-of-pearl provokes ideas for smooth surfaces, clams inspire gluey substances, shark's skin is used to develop materials that reduce drag in water, and so on. Researchers have now found a model for strong, lightweight materials by diving below the sea surface to investigate a sea urchin cousin known as the heart urchin.

Posted: Nov 10th, 2015

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Hydrogel superglue is 90 percent water

Engineers have developed a method to make synthetic, sticky hydrogel that is more than 90 percent water. The hydrogel, which is a transparent, rubber-like material, can adhere to surfaces such as glass, silicon, ceramics, aluminum, and titanium with a toughness comparable to the bond between tendon and cartilage on bone.

Posted: Nov 10th, 2015

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