3D images created in liquid with laser-generated bubbles

researchersu
February 23, 2017

A completely new type of display that creates 3D images by using a laser to form tiny bubbles inside a liquid ‘screen’ has been created by researchers. Instead of rendering a 3D scene on a flat surface, the display itself is three-dimensional, a property known as volumetric. This allows viewers to see a 3D image in the columnar display from all angles without any 3D glasses or headsets. In The…

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Moving data with light to save electricity

opticalchipimageee
February 21, 2017

At current rates of increase, computers’ energy requirements will exceed the world’s total power output by 2040, the Semiconductor Industry Association has estimated. Using light rather than electricity to move data would dramatically reduce computer chips’ energy consumption, and the past 20 years have seen remarkable progress in the development of silicon photonics, or optical devices that are made from silicon so they can easily be integrated with electronics on…

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Laser efficiency boosted by ‘lossless’ metamaterial

losslessimageee
February 17, 2017

A material that could reduce signal losses in photonic devices has been developed by engineers at the University of California San Diego. The advance has the potential to boost the efficiency of various light-based technologies including fiber optic communication systems, lasers and photovoltaics. The discovery addresses one of the biggest challenges in the field of photonics: minimizing loss of optical (light-based) signals in devices known as plasmonic metamaterials. Plasmonic metamaterials…

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LED screens to improve with Scotch tape?

scotchtapeimageee
February 16, 2017

A new bilayer material, with each layer measuring less than one nanometer in thickness, that someday could lead to more efficient and versatile light emission was published in a cover story appearing in the peer-reviewed journal Nanoscale Horizons. Researchers working at the Ultrafast Laser Lab at the University of Kansas successfully created the material by combining atomically thin layers of molybdenum disulfide and rhenium disulfide. “Both absorb light very well as…

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Scientists tap into neglected properties of light

lightpropertiesimageee
February 16, 2017

Researchers from the University of Toronto (U of T) have demonstrated a way to increase the resolution of microscopes and telescopes beyond long-accepted limitations by tapping into previously neglected properties of light. The method allows observers to distinguish very small or distant objects that are so close together they normally meld into a single blur. Telescopes and microscopes are great for observing lone subjects. Scientists can precisely detect and measure…

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Conventional methods can’t match high-res biomolecule imaging

February 15, 2017

An important step towards understanding proteins and other complex biological molecules function, is determining the exact configuration, including how they bind with receptors in the body. But such imaging is difficult to do. It usually requires the molecules to be crystallized first so that X-ray diffraction techniques can be applied, and not all such molecules can be crystallized. Now, a new method developed by researchers at MIT could lead to…

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The Einstein effect in optical fibers

February 15, 2017

To guide light in Photonic Crystal Fiber (PCF) a new mechanism has been discovered by the Max Planck Institute for the Science of Light in Erlangen researchers. PCF is a hair-thin glass fiber with a regular array of hollow channels running along its length. When helically twisted, this spiraling array of hollow channels acts on light rays in an analogous manner to the bending of light rays when they travel…

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VR headsets: now you see me, now you don’t!

February 14, 2017

With certain new technologies they can be adapted and tuned to our personal needs and characteristics. For example the voice recognition on smart phones, is trained to recognize how we speak (or try to). However, that isn’t possible with today’s virtual reality headsets. They can’t account for differences in vision, which can make watching VR less enjoyable or even cause headaches or nausea. Now researchers at Stanford’s Computational Imaging Lab,…

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Device designed to detect ultrasound with light

February 14, 2017

With the ability to fit into a contact lens, a tiny, transparent device developed by the scientists at Northwestern University has a bright future, with the potential to help a range of scientific endeavors from biomedicine to geology. The device, called the Micro-ring resonator detector, can determine the speed of the blood flow and the oxygen metabolic rate at the back of the eye. This information could help diagnose such…

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New control of light achieved through flat lens working continuously

February 9, 2017

Last year a new flat lens that could focus light with high efficiency within the visible spectrum was announced from the researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS). The lens used an ultra-thin array of nanopillars to bend and focus light as it passed. The announcement was hailed as a breakthrough in optics and was named among Science Magazine’s top discoveries of 2016….

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