Lifeboat Foundation

Holography is a powerful tool that can reconstruct wavefronts of light and combine the fundamental wave properties of amplitude, phase, polarization, wave vector and frequency. Smart multiplexing techniques (multiple signal integration) together with metasurface designs are currently in high demand to explore the capacity to engineer information storage systems and enhance optical encryption security using such metasurface holograms.

Holography based on metasurfaces is a promising candidate for applications in optical displays/storage with enormous information bearing capacity alongside a large field of view compared to traditional methods. To practically realize metasurface holograms, holographic profiles should be encoded on ultrathin nanostructures that possess strong light-matter interactions (plasmonic interactions) in an ultrashort distance. Metasurfaces can control light and acoustic waves in a manner not seen in nature to provide a flexible and compact platform and realize a variety of vectorial holograms, with high dimensional information that surpass the limits of liquid crystals or optical photoresists.

Among the existing techniques employed to achieve highly desired optical properties, polarization multiplexing (multiple signal integration) is an attractive method. The strong cross-talk associated with such platforms can, however, be prevented with birefringent metasurfaces (two-dimensional surfaces with two different refractive indices) composed of a single meta-atom per unit-cell for optimized polarization multiplexing.

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Over the past few years, classical convolutional neural networks (cCNNs) have led to remarkable advances in computer vision. Many of these algorithms can now categorize objects in good quality images with high accuracy.

However, in real-world applications, such as autonomous driving or robotics, imaging data rarely includes pictures taken under ideal lighting conditions. Often, the images that CNNs would need to process feature occluded objects, motion distortion, or low signal to noise ratios (SNRs), either as a result of poor image quality or low light levels.

Although cCNNs have also been successfully used to de-noise images and enhance their quality, these networks cannot combine information from multiple frames or video sequences and are hence easily outperformed by humans on low quality images. Till S. Hartmann, a neuroscience researcher at Harvard Medical School, has recently carried out a study that addresses these limitations, introducing a new CNN approach for analyzing noisy images.

Are we about to see Apple reaching an even newer gold standard in ear buds? Apple has a patent for AirPods with built in biometrics. It’s being called “universal” because the idea calls for ear pods that can be worn in either ear. That would mean no more left-right business.

Much of the tech news coverage is focusing on the “interchangeable” aspect of the patent concept. 9to5Mac’s Alex Allegro said interchangeable earbuds “equipped with ‘at least one’ biometric sensor, which could detect left/right ear placement and accordingly adjust audio.” He assessed the potential advantages as “evolving AirPods from a separate left / right unit to a single component,” which could lower costs and simplify getting a replacement AirPod.

If the ear buds are interchangeable, then it is a big deal in terms of user satisfaction. OK, the product is popular now but The Verge reminds us that the AirPod is not a perfect fit for everyone. Nick Statt: “Due to the shape of some people’s inner ear, the headphones simply don’t fit every possible ear shape well.”

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The curious tale of a ladies hairdresser who invented a potentially world-changing material. Part one of six. Reported by Lee Johnson, produced, filmed and directed by Adam Proctor.

China launched the Chang’e 4 spacecraft atop a Long March 3B rocket on Friday in a milestone mission to land a rover on the far side of the moon.

Many years after, the young dreamer has surpassed his imagination. He is now a lead engineer on InSight — NASA’s spacecraft which recently landed on Mars. He is in charge of the mission’s robotic arm mechanism.

Tesla is upgraded to “buy” at Jeffries as Tesla CEO Elon Musk appears on “60 Minutes” to talk about his erratic behavior this year.

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General Motors recently announced plans to double its investment in electric vehicles and that’s just fine with Elon Musk. 60 Minutes, Sunday. https://cbsn.ws/2L0D2pw&h=AT27OxLLrIvSTagOUUaqQ8rb_hlgmnx14C…svvYFzIR1X

China has launched the first mission to land a robotic craft on the far side of the Moon, Chinese media say.

The Chang’e-4 mission will see a static lander and rover touch down in Von Kármán crater, located on the side of the Moon which never faces Earth.

The payload blasted off atop a Long March 3B rocket from Xichang Satellite Launch Center.