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Aug 16, 2024

Engineers design tiny batteries for powering cell-sized robots

Posted by in categories: biotech/medical, chemistry, robotics/AI

A tiny battery designed by MIT engineers could enable the deployment of cell-sized, autonomous robots for drug delivery within in the human body, as well as other applications such as locating leaks in gas pipelines.

The , which is 0.1 millimeters long and 0.002 millimeters thick—roughly the thickness of a human hair—can capture oxygen from air and use it to oxidize zinc, creating a current of up to 1 volt. That is enough to power a small circuit, sensor, or actuator, the researchers showed.

“We think this is going to be very enabling for robotics,” says Michael Strano, the Carbon P. Dubbs Professor of Chemical Engineering at MIT and the senior author of the study. “We’re building robotic functions onto the battery and starting to put these components together into devices.”

Aug 16, 2024

Photon entanglement could explain the rapid brain signals behind consciousness

Posted by in categories: neuroscience, quantum physics

Understanding the nature of consciousness is one of the hardest problems in science. Some scientists have suggested that quantum mechanics, and in particular quantum entanglement, is the key to unraveling the phenomenon.

Aug 16, 2024

Huge Lake on Mars // Fate of Milkdromeda // Hope for VIPER Rover

Posted by in categories: cosmology, engineering, environmental, existential risks

Vast amounts of water found on Mars, but there’s a catch, Milky Way and Andromeda might not merge after all, a planet found before it gets destroyed, and an easier way to terraform Mars.

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Aug 16, 2024

Breakthrough brain-computer interface allows man with ALS to speak again

Posted by in categories: biotech/medical, computing, neuroscience

“Not being able to communicate is so frustrating and demoralizing. It is like you are trapped,” Harrell said. “Something like this technology will help people back into life and society.”

For the researchers involved, seeing the impact of their work on Harrell’s life has been deeply rewarding. “It has been immensely rewarding to see Casey regain his ability to speak with his family and friends through this technology,” said the study’s lead author, Nicholas Card, a postdoctoral scholar in the UC Davis Department of Neurological Surgery.

Leigh Hochberg, a neurologist and neuroscientist involved in the BrainGate trial, praised Harrell and other participants for their contributions to this groundbreaking research. “Casey and our other BrainGate participants are truly extraordinary. They deserve tremendous credit for joining these early clinical trials,” Hochberg said. “They do this not because they’re hoping to gain any personal benefit, but to help us develop a system that will restore communication and mobility for other people with paralysis.”

Aug 16, 2024

‘Startling Advance’ in Designer Proteins Opens a World of Possibility for Biotech

Posted by in categories: biotech/medical, robotics/AI

This type of molecular collaboration has inspired scientists for nearly a century. Here, oxygen is the effector. It flips a protein switch, helping proteins better carry oxygen through the body. In other words, it may be possible to optimize protein functions with an alternative effector drug.

The problem? The original inspiration is wonky. Sometimes hemoglobin proteins carry oxygen. Other times they don’t. In 1965, a French and American collaboration found out why. Each protein alternates between two three-dimensional shapes—one that carries oxygen and another that doesn’t. The shapes can’t coexist in the assembled protein to carry oxygen: It’s all-or-none, depending on the presence and amount of the effector.

The new study built on these lessons to guide their AI-designed proteins.

Aug 16, 2024

Nano-Semiconductors Poised to Disrupt Quantum Technology with Moiré Excitons as Qubits

Posted by in categories: computing, nanotechnology, quantum physics

Quantum technology relies on qubits, the fundamental units of quantum computers, whose operation is influenced by quantum coherence time. Scientists believe that moiré excitons — electron-hole pairs trapped in overlapping moiré interference fringes — could serve as qubits in future nano-semiconductors. However, previous limitations in focusing light have caused optical interference, making it difficult to measure these excitons accurately.

Kyoto University researchers have developed a new technique to reduce moiré excitons, allowing for accurate measurement of quantum coherence time. Their findings, published in Nature Communications, reveal that the quantum coherence of a single moiré exciton remains stable for over 12 picoseconds at −269°C, significantly longer than that of excitons in traditional two-dimensional semiconductors. The confined moiré excitons in interference fringes help maintain quantum coherence, advancing the potential of quantum technology.

“We combined electron beam microfabrication techniques with reactive ion etching. By utilizing Michelson interferometry on the emission signal from a single moiré exciton, we could directly measure its quantum coherence time,” said Kazunari Matsuda of KyotoU’s Institute Advanced Energy.

Aug 16, 2024

NASA Demonstrates ‘Ultra-Cool’ Quantum Sensor for First Time in Space

Posted by in categories: quantum physics, space

Future space missions could use quantum technology to track water on Earth, explore the composition of moons and other planets, or probe mysterious cosmic phenomena.

Aug 16, 2024

Massive Solar Storm Opens Rare 2-Hour Magnetic Highway Between Sun And Earth

Posted by in category: transportation

The sensational event triggered rare auroras on the Sun and lasted a mere two hours.

Aug 16, 2024

Astrophotographers capture rare Jupiter and Mars encounter (photos)

Posted by in category: cosmology

The two planets came as close as within a quarter-of-a-degree, or about 50% of the angular size of the lunar disk.

Lorenzo Di Cola also captured the conjunction over L’Aquila Italy. Both Jupiter and Mars were visible to the naked eye in the constellation Taurus during the cozy meet-up.

The photographer also took this amazing composition image made up of nine interval timer photos showing the two planets rising through the sky. Mars and Jupiter are visible in conjunction and if you look carefully you can even see some of Jupiter’s moons.

Aug 16, 2024

Coinbase Now Available in Hawaii Following Regulatory Clarity From America’s 50th State

Posted by in categories: cryptocurrencies, finance

Crypto exchange Coinbase just announced that Hawaii residents can now use its platform to buy and sell digital assets.

In a statement, the largest US-based crypto exchange says its products and services are now available in The Aloha State after the Hawaii Department of Commerce and Consumer Affairs (DCCA) Division of Financial Institutions (DFI) made regulatory changes that provided clarity for cryptocurrency firms.

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