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Archive for the ‘mobile phones’ category: Page 2

Nov 1, 2022

Smart windows that can polarize sunlight could offer a low energy alternative to Wi-Fi

Posted by in categories: electronics, mobile phones

Sunshine streaming through a window could be directly harnessed for wireless data transmission to electronic devices. KAUST researchers have designed a smart glass system that can modulate the sunlight passing through it, encoding data into the light that can be detected and decoded by devices in the room. The use of sunlight to send data would offer a greener mode of communication compared to conventional Wi-Fi or cellular data transmission.

Basem Shihada had been exploring data encoding into an artificial light source when he had the lightbulb moment to use sunshine. “I was simply hoping to use a to record a video of the encoded light stream to try to decode the video to retrieve the data; that’s when I thought, why not do the same with the ?” Shihada recalls. “This would be much easier and can be done over the cell phone camera too. So we began to explore sunlight as an information carrier,” he says.

The team has now designed a sunlight communication system comprised of two parts. “There is a light modulator that can be embedded in a glass surface and an in-room receiver,” says Osama Amin, a research scientist in Shihada’s labs.

Oct 31, 2022

Hark back to the late 1990s with this re-creation of the dialup Internet experience

Posted by in categories: biotech/medical, computing, mobile phones

We all found our coping strategies for riding out the pandemic in 2020. Biomedical engineer Gough Lui likes to tinker with tech—particularly vintage tech—and decided he’d try to recreate what it was like to connect to the Internet via dialup back in the late 1990s. He recorded the entire process in agonizing real time, dotted with occasional commentary.

Those of a certain age (ahem) well remember what it used to be like: even just booting up the computer required patience, particularly in the earlier part of the decade, when one could shower and make coffee in the time it took to boot up one’s computer from a floppy disk. One needed a dedicated phone line for the Internet connection, because otherwise an incoming call could disrupt the connection, forcing one to repeat the whole dialup process.

Continue reading “Hark back to the late 1990s with this re-creation of the dialup Internet experience” »

Oct 30, 2022

Solar panels: How new materials can make them cheaper and better than ever

Posted by in categories: mobile phones, solar power, sustainability

Transitioning away from fossil fuels.

The cost of turning sunlight into electricity has fallen more than 90 percent over the last decade. Solar is now the cheapest form of newly built energy generation. Job done? Not quite. Right now, solar works well at cost-competitive prices and can help us cut emissions significantly. But with less than five percent of the world’s electricity delivered by solar, we are just at the start.

The solar panels of 2022 are like the chunky mobile phones of the 1990s. Much more is possible with the same underlying technology.

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Oct 30, 2022

‘Lab on a chip’: Scientists invent new and improved tool to measure light

Posted by in categories: mobile phones, robotics/AI

Scientists and materials researchers have invented a new and improved tool, “lab on a chip,” to measure light, according to a press release by Oregon State University (OSU) published on October 20.

An ultra-tiny device

The new tool consists of an ultra-tiny spectrometer that fits on a microchip and is operated using artificial intelligence. It now may lead to upgrades in everything from smartphone cameras to environmental monitoring.

Oct 30, 2022

Russian spies hacked former UK Prime Minister Liz Truss’ mobile phone | Latest News | WION

Posted by in categories: cybercrime/malcode, mobile phones

UK and Russia are once again at loggerheads, this is after a report emerged that former Prime Minister Liz Truss cell phone was hacked when se was the Foreign Minister. UK Opposition politicians are now calling for an investigation after Daily Mail reported that suspected Kremlin agents were behind the hawk.

#UK #Russia #liztruss.

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Oct 30, 2022

Simple machine may pave the way for more powerful cell phones and WiFi

Posted by in category: mobile phones

The next generation of phones and wireless devices will need new antennae to access higher and higher frequency ranges. One way to make antennae that work at tens of gigahertz—the frequencies needed for 5G and higher devices—is to braid filaments about 1 micrometer in diameter. But today’s industrial fabrication techniques won’t work on fibers that small.

Now a team of researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) has developed a simple machine that uses the surface tension of water to grab and manipulate microscopic objects, offering a potentially powerful tool for nanoscopic manufacturing.

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Oct 29, 2022

Light-analyzing ‘lab on a chip’ opens door to widespread use of portable spectrometers

Posted by in categories: biotech/medical, mobile phones, robotics/AI, security

Scientists including an Oregon State University materials researcher have developed a better tool to measure light, contributing to a field known as optical spectrometry in a way that could improve everything from smartphone cameras to environmental monitoring.

The study, published today in Science, was led by Finland’s Aalto University and resulted in a powerful, ultra-tiny that fits on a microchip and is operated using artificial intelligence.

The research involved a comparatively new class of super-thin materials known as two-dimensional semiconductors, and the upshot is a proof of concept for a spectrometer that could be readily incorporated into a variety of technologies—including quality inspection platforms, security sensors, biomedical analyzers and space telescopes.

Oct 29, 2022

Why “generative AI” is suddenly on everyone’s lips: it’s an “open field”

Posted by in categories: mobile phones, robotics/AI

If you’ve been closely following the progress of Open AI, the company run by Sam Altman whose neural nets can now write original text and create original pictures with astonishing ease and speed, you might just skip this piece.

If, on the other hand, you’ve only been vaguely paying attention to the company’s progress and the increasing traction that other so-called “generative” AI companies are suddenly gaining and want to better understand why, you might benefit from this interview with James Currier, a five-time founder and now venture investor who cofounded the firm NFX five years ago with several of his serial founder friends.

Currier falls into the camp of people following the progress closely — so closely that NFX has made numerous related investments in “generative tech” as he describes it, and it’s garnering more of the team’s attention every month. In fact, Currier doesn’t think the buzz about this new wrinkle on AI isn’t hype so much as a realization that the broader startup world is suddenly facing a very big opportunity for the first time in a long time. “Every 14 years,” says Currier, “we get one of these Cambrian explosions. We had one around the internet in ’94. We had one around mobile phones in 2008. Now we’re having another one in 2022.”

Oct 28, 2022

Brightest-Ever Space Explosion Reveals Possible Hints of Dark Matter

Posted by in categories: cosmology, mobile phones, physics

O.o!!


On Sunday, October 9, Judith Racusin was 35,000 feet in the air, en route to a high-energy astrophysics conference, when the biggest cosmic explosion in history took place. “I landed, looked at my phone, and had dozens of messages,” said Racusin, an astrophysicist at NASA’s Goddard Space Flight Center in Maryland. “It was really exceptional.”

The explosion was a long gamma-ray burst, a cosmic event where a massive dying star unleashes powerful jets of energy as it collapses into a black hole or neutron star. This particular burst was so bright that it oversaturated the Fermi Gamma-ray Space Telescope, an orbiting NASA telescope designed in part to observe such events. “There were so many photons per second that they couldn’t keep up,” said Andrew Levan, an astrophysicist at Radboud University in the Netherlands. The burst even appears to have caused Earth’s ionosphere, the upper layer of Earth’s atmosphere, to swell in size for several hours. “The fact you can change Earth’s ionosphere from an object halfway across the universe is pretty incredible,” said Doug Welch, an astronomer at McMaster University in Canada.

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Oct 27, 2022

Research team proposes unclonable, invisible machine vision markers using cholesteric spherical reflectors

Posted by in categories: augmented reality, blockchains, economics, mobile phones, physics, robotics/AI, wearables

Over the last three decades, the digital world that we access through smartphones and computers has grown so rich and detailed that much of our physical world has a corresponding life in this digital reality. Today, the physical and digital realities are on a steady course to merging, as robots, Augmented Reality (AR) and wearable digital devices enter our physical world, and physical items get their digital twin computer representations in the digital world.

These digital twins can be uniquely identified and protected from manipulation thanks to crypto technologies like blockchains. The trust that these technologies provide is extremely powerful, helping to fight counterfeiting, increase supply chain transparency, and enable the circular economy. However, a weak point is that there is no versatile and generally applicable identifier of physical items that is as trustworthy as a blockchain. This breaks the connection between the physical and digital twins and therefore limits the potential of technical solutions.

In a new paper published in Light: Science & Applications, an interdisciplinary team of scientists led by Professors Jan Lagerwall (physics) and Holger Voos (robotics) from the University of Luxembourg, Luxembourg, and Prof. Mathew Schwartz (architecture, construction of the built environment) from the New Jersey Institute of Technology, U.S., propose an innovative solution to this problem where physical items are given unique and unclonable fingerprints realized using cholesteric spherical reflectors, or CSRs for short.

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