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Aug 3, 2022

MIT scientists create color-shifting films inspired by 19th-century holography

Posted by in categories: materials, physics

Potential applications include pressure-monitoring bandages, shade-shifting fabrics.


The bright iridescent colors in butterfly wings or beetle shells don’t come from any pigment molecules but from how the wings are structured—a naturally occurring example of what physicists call photonic crystals. Scientists can make their own structural colored materials in the lab, but it can be challenging to scale up the process for commercial applications without sacrificing optical precision.

Aug 3, 2022

A crab-inspired artificial vision system for both terrestrial and aquatic environments

Posted by in category: robotics/AI

To efficiently navigate real-world environments, robots typically analyze images collected by imaging devices that are integrated within their body. To enhance the performance of robots, engineers have thus been trying to develop different types of highly performing cameras, sensors and artificial vision systems.

Many artificial systems developed so far draw inspiration from the eyes of humans, animals, insects and fish. These systems have different features and characteristics, depending on the in which they are designed to operate in.

Most existing sensors and cameras are designed to work either in on the ground (i.e., in terrestrial environments) or in (i.e., in ). Bio-inspired artificial vision systems that can operate in both terrestrial and aquatic environments, on the other hand, remain scarce.

Aug 3, 2022

Wolf in sheep’s clothing: how malware tricks users and antivirus

Posted by in category: cybercrime/malcode

One of the primary methods used by malware distributors to infect devices is by deceiving people into downloading and running malicious files, and to achieve this deception, malware authors are using a variety of tricks.

Some of these tricks include masquerading malware executables as legitimate applications, signing them with valid certificates, or compromising trustworthy sites to use them as distribution points.

According to VirusTotal, a security platform for scanning uploaded files for malware, some of these tricks are happening on a much larger scale than initially thought.

Aug 3, 2022

MIT’s New Hardware Focusing on Analog Synapse is 1M Faster than the Human Brain—For Deep Learning

Posted by in category: robotics/AI

Its process is faster than the human brain, and it is ready for deep learning.

Aug 3, 2022

Developing a new approach for building quantum computers

Posted by in categories: encryption, engineering, quantum physics, supercomputing

Quantum computing, though still in its early days, has the potential to dramatically increase processing power by harnessing the strange behavior of particles at the smallest scales. Some research groups have already reported performing calculations that would take a traditional supercomputer thousands of years. In the long term, quantum computers could provide unbreakable encryption and simulations of nature beyond today’s capabilities.

A UCLA-led interdisciplinary research team including collaborators at Harvard University has now developed a fundamentally new strategy for building these computers. While the current state of the art employs circuits, semiconductors and other tools of electrical engineering, the team has produced a game plan based in chemists’ ability to custom-design atomic building blocks that control the properties of larger molecular structures when they’re put together.

The findings, published last week in Nature Chemistry, could ultimately lead to a leap in quantum processing power.

Aug 3, 2022

Visualising sigma orbitals opens path to new understanding of surface chemistry

Posted by in categories: chemistry, mapping

Photoemisssion orbital tomography extended beyond pi orbitals.


Figure

Experimentally-generated map of copper surface using photoemission orbital tomography (top left) and the projected densities of states of σ and π orbitals (top right). The bianthracene investigated in the study (bottom left) and maps of its σ orbitals (bottom middle, right)

Continue reading “Visualising sigma orbitals opens path to new understanding of surface chemistry” »

Aug 3, 2022

World could install 250 GW of solar this year, claims Bloomberg analyst

Posted by in categories: energy, sustainability

Rob Barnett, a senior clean energy analyst for Bloomberg, forecasts a 30% increase in global PV deployment this year, and double-digit growth through 2025.


Demand is pushing solar growth across the world to new heights, as Bloomberg senior analyst Rob Barnett forecasts deployment to increase by 30% this year. Total global solar deployment is closing in on 1 TW installed – an impressive milestone for the energy transition.

“The global solar picture is just staggering at this point,” Barnett told Yahoo Finance. “We are on track to install something like 250 GW of solar capacity this year.”

Continue reading “World could install 250 GW of solar this year, claims Bloomberg analyst” »

Aug 3, 2022

Why The High Plains Turns Off Its turbines To Limit Wind Production While The Texas Power Grid Is Stressed

Posted by in category: energy

While wind farms in the region could help power and lower energy costs for at least 9 million homes, significant infrastructure upgrades would be needed to supply electricity from the region to other parts of the state.

Aug 3, 2022

Indianapolis Transit Design Prioritizes People Over Parking

Posted by in category: transportation

Leadership in Indianapolis has taken strides toward lifting parking minimums, and making their city less car dependent and more transit friendly—all while keeping their fiscal house in order.

Aug 3, 2022

Seeing the light: Researchers develop new AI system using light to learn associatively

Posted by in categories: information science, robotics/AI

Researchers at Oxford University’s Department of Materials, working in collaboration with colleagues from Exeter and Munster, have developed an on-chip optical processor capable of detecting similarities in datasets up to 1,000 times faster than conventional machine learning algorithms running on electronic processors.

The new research published in Optica took its inspiration from Nobel Prize laureate Ivan Pavlov’s discovery of classical conditioning. In his experiments, Pavlov found that by providing another stimulus during feeding, such as the sound of a bell or metronome, his dogs began to link the two experiences and would salivate at the sound alone. The repeated associations of two unrelated events paired together could produce a learned response—a conditional reflex.

Co-first author Dr. James Tan You Sian, who did this work as part of his DPhil in the Department of Materials, University of Oxford, said, “Pavlovian associative learning is regarded as a basic form of learning that shapes the behavior of humans and animals—but adoption in AI systems is largely unheard of. Our research on Pavlovian learning in tandem with optical parallel processing demonstrates the exciting potential for a variety of AI tasks.”