Saturday, 11 February 2017

Scientists to engineer dream diodes with a graphene interlayer

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A new study has solved the contact resistance problem of metal-semiconductor, which had remained unsolved for almost 50 years.
via Science Daily

Exploring mysteries on the surface

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Scientists have discovered the unique properties of two-dimensional (2D) materials and metals grown on graphene, graphite, and other carbon coated surfaces.
via Science Daily

Solar System Portrait

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On Valentine's Day in 1990, cruising four billion miles from the Sun, the Voyager 1 spacecraft looked back one last time to make this first ever Solar System family portrait. The complete portrait is a 60 frame mosaic made from a vantage point 32 degrees above the ecliptic plane. In it, Voyager's wide angle camera frames sweep through the inner Solar System at the left, linking up with gas giant Neptune, the Solar System's outermost planet, at the far right. Positions for Venus, Earth, Jupiter, Saturn, Uranus, and Neptune are indicated by letters, while the Sun is the bright spot near the center of the circle of frames. The inset frames for each of the planets are from Voyager's narrow field camera. Unseen in the portrait are Mercury, too close to the Sun to be detected, and Mars, unfortunately hidden by sunlight scattered in the camera's optical system. Closer to the Sun than Neptune at the time, small, faint Pluto's position was not covered.

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'Curiosity' exposes low CO2 level in Mars' primitive atmosphere

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The CO2 level in Mars' primitive atmosphere 3.5 billion years ago was too low for sediments, such as those found by NASA's Curiosity exploration vehicle in areas like the Gale Crater on the planet's equator, to be deposited.
via Science Daily
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