Science

Tags:

Dusty Surprise Around Giant Black Hole

eso1327a_0.jpg
ESO’s Very Large Telescope Interferometer has gathered the most detailed observations ever of the dust around the huge black hole at the centre of an active galaxy. Rather than finding all of the glowing dust in a doughnut-shaped torus around the black hole, as expected, the astronomers find that much of it is located above and below the torus. These observations show that dust is being pushed away from the black hole as a cool wind — a surprising finding that challenges current theories and tells us how supermassive black holes evolve and interact with their surroundings.

Tags:

Ten Thousandth Near-Earth Object Unearthed in Space

neo20130624-640_0_0.gif
Asteroid 2013 MZ5 as seen by the University of Hawaii's PanSTARR-1 telescope. In this animated gif, the asteroid moves relative to a fixed background of stars. Asteroid 2013 MZ5 is in the right of the first image, towards the top, moving diagonally left/down.

Tags:

Accelerating Proliferation of Human Bone-Marrow Stem Cells by Nanobioceramics

A group of Iranian researchers carried out studies on 63S bioactive glass nanobioceramics and hydroxyapatite derived from animal bone and increased the bioactivity and proliferation of human bone-marrow stem cells.

47695.jpg

Tags:

Beyond Silicon: Transistors without Semiconductors

For decades, electronic devices have been getting smaller, and smaller, and smaller. It's now possible—even routine—to place millions of transistors on a single silicon chip.

47696.jpg
Electrons flash across a series of gold quantum dots on boron nitride nanotubes. Michigan Tech scientists made the quantum-tunneling device, which acts like a transistor at room temperature, without using semiconducting materials.

Tags:

Hubble spots galaxies in close encounter

heic1311a_0.jpg

Tags:

Light and nanoprobes detect early signs of infection

Duke University biomedical engineers and genome researchers have developed a proof-of-principle approach using light to detect infections before patients show symptoms.

Tags:

Two-Dimensional Atomically-Flat Transistors Show Promise for Next Generation Green Electronics

UC Santa Barbara researchers demonstrate first n-type field effect transistors on monolayer tungsten diselenide with record performance

47694.jpg

Tags:

Sound waves precisely position nanowires

The smaller components become, the more difficult it is to create patterns in an economical and reproducible way, according to an interdisciplinary team of Penn State researchers who, using sound waves, can place nanowires in repeatable patterns for potential use in a variety of sensors, optoelectronics and nanoscale circuits.

47676.jpg
This image shows a simulation of the electric field distribution in a two-dimensional standing surface wave field.

Tags:

A Battery Made of Wood? Wood fibers help nano-scale batteries keep their structure

A sliver of wood coated with tin could make a tiny, long-lasting, efficient and environmentally friendly battery.

47679.jpg

Tags:

Billion-Pixel View of Mars Comes From Curiosity Rover

pia16918-640_0_0.jpg
This is a reduced version of panorama from NASA's Mars rover Curiosity with 1.3 billion pixels in the full-resolution version. It shows Curiosity at the "Rocknest" site where the rover scooped up samples of windblown dust and sand. Curiosity used three cameras to take the component images on several different days between Oct. 5 and Nov. 16, 2012.