Silicon could be a Photonics Game-Changer

Ben_murdin_photonics

New research from the University of Surrey has shown that silicon could be one of the most powerful materials for photonic informational manipulation — opening up new possibilities for the production of lasers and displays.

While computer chips’ extraordinary success has confirmed silicon as the prime material for electronic information control, silicon has a reputation as a poor choice for photonics; there are no commercially available silicon light-emitting diodes, lasers or displays.

Now, in a paper published by Light: Science and Applications journal, a Surrey-led international team of scientists has shown that silicon is an outstanding candidate for creating a device that can control multiple light beams.

The discovery means that it is now possible to produce silicon pro...

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Astronomers detect Hydroxyl Molecule Signature in an Exoplanet Atmosphere

Artist’s impression of an ultra-hot Jupiter exoplanet, WASP-33b. Image credit Astrobiology Center.
Artist’s impression of an ultra-hot Jupiter exoplanet, WASP-33b. Image credit: Astrobiology Center.

An international collaboration of astronomers led by a researcher from the Astrobiology Center and Queen’s University Belfast, and including researchers from Trinity College Dublin, has detected a new chemical signature in the atmosphere of an extrasolar planet (a planet that orbits a star other than our Sun).

The hydroxyl radical (OH) was found on the dayside of the exoplanet WASP-33b. This planet is a so-called ‘ultra-hot Jupiter’, a gas-giant planet orbiting its host star much closer than Mercury orbits the Sun and therefore reaching atmospheric temperatures of more than 2,500° C (hot enough to melt most metals).

The lead researcher based at the Astrobiology Center and Queen’...

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Skin and Bones Repaired by Bioprinting During Surgery

schematic showing bioprinting of skin and bone, a rat cartoon with a defect on its head is bioprinted with one bone and 4 skin inks creating bone and skin layers.
Schematic of the skin and bone bioprinting process. After scanning, the bone and then skin layers are bioprinted creating a layered repair with bone, a barrier layer, and dermis and epidermis.
 IMAGE: OZBOLAT LABORATORY, PENN STATE

Fixing traumatic injuries to the skin and bones of the face and skull is difficult because of the many layers of different types of tissues involved, but now, researchers have repaired such defects in a rat model using bioprinting during surgery, and their work may lead to faster and better methods of healing skin and bones.

“This work is clinically significant,” said Ibrahim T. Ozbolat, Hartz Family Career Development Associate Professor of Engineering Science and Mechanics, Biomedical Engineering and Neurosurgery, Penn State...

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Fully Recyclable Printed Electronics developed

Recyclable printed electronics
A 3D rendering of the first fully recyclable, printed transistor

New technique reclaims nearly 100% of all-carbon-based transistors while retaining future functionality of the materials. Engineers at Duke University have developed the world’s first fully recyclable printed electronics. By demonstrating a crucial and relatively complex computer component — the transistor — created with three carbon-based inks, the researchers hope to inspire a new generation of recyclable electronics to help fight the growing global epidemic of electronic waste.

The work appears online recently in the journal Nature Electronics.

“Silicon-based computer components are probably never going away, and we don’t expect easily recyclable electronics like ours to replace the technology and devices that ar...

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