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Jul 25, 2024

Dark matter flies ahead of normal matter in mega galaxy cluster collision

Posted by in category: cosmology

Such decoupling of dark and normal matter has been seen before, most famously in the Bullet Cluster. In that collision, the hot gas can be seen clearly lagging behind the dark matter after the two galaxy clusters shot through each other. The situation that took place in MACS J0018.5+1626 (referred to subsequently as MACS J0018.5) is similar, but the orientation of the merger is rotated, roughly 90 degrees relative to that of the Bullet Cluster.

In other words, one of the massive clusters in MACS J0018.5 is flying nearly straight toward Earth while the other one is rushing away. That orientation gave researchers a unique vantagepoint from which to, for the first time, map out the velocity of both the dark matter and normal matter and elucidate how they decouple from each other during a galaxy cluster collision.

Continue reading “Dark matter flies ahead of normal matter in mega galaxy cluster collision” »

Jul 25, 2024

Toyota Eyes Perovskite Solar Cells For Solar Car Of The Future

Posted by in categories: energy, space, sustainability

Fans of perovskite solar cell technology have been promising the moon, and stakeholders are increasingly confident that it will deliver. Among them is Toyota, which has just tapped its Woven Capital branch to put down a 5.5 billion yen stake in the perovskite solar startup EneCoat Technologies. If you’re thinking the solar-powered electric car of the future is coming, that’s a good guess, because EneCoat lists mobility applications among its areas of focus.

New Solar Cells For The Solar Car Of The Future

Continue reading “Toyota Eyes Perovskite Solar Cells For Solar Car Of The Future” »

Jul 25, 2024

Study shows elephant trunk dexterity can be mimicked with minimal actuators

Posted by in category: futurism

The trunk of an elephant is among the versatile appendages in the animal kingdom. Now a research team has shown that most of its dexterity can be reproduced with a model using just three “muscles.” And they built a physical model to do just that. The findings are published in the journal Physical Review Letters.

Jul 25, 2024

Synthesis of a new compound with excellent intrinsic magnetic properties using smaller amounts of rare earth elements

Posted by in category: futurism

The National Institute for Materials Science has successfully synthesized a new SmFe-based magnetic compound, SmFe8.8N1.1, which possesses superior intrinsic magnetic properties when compared to those of NdFeB compound used in neodymium magnets. The study is published in the journal Acta Materialia.

Jul 25, 2024

An optical lattice clock based on strontium atoms achieves unprecedented accuracy

Posted by in category: particle physics

Researchers at the Ye Lab at JILA (the National Institute of Standards and Technology and the University of Colorado Boulder) and University of Delaware recently created a highly precise optical lattice clock based on trapped strontium atoms. Their clock, presented in a Physical Review Letters paper, exhibits a total systematic uncertainty of 8.1 × 10–19, which is the lowest uncertainty reported to date.

Jul 25, 2024

Study finds active matter and shear flows share thinning behaviors

Posted by in category: futurism

According to a study published in Proceedings of the National Academy of Sciences, a research team led by Professor Xu Ning from the University of Science and Technology of China (USTC) has found that active matter and shear flows share similar thinning behaviors in self-propulsion and shear forces.

Jul 25, 2024

Physicists control electronic properties of moiré crystals

Posted by in categories: materials, physics

If you make a material thinner and thinner, at a certain point it undergoes a seemingly miraculous transformation: A two-dimensional material that consists of only one or two layers of molecules sometimes has completely different properties than the same material when it is thicker.

Jul 25, 2024

This drone has legs: Watch a flying robot perch on branches, catch a tennis ball in mid-air

Posted by in categories: drones, robotics/AI

Wings aren’t the only things that make birds so successful. If it weren’t for their feet, how would pelicans skimming the tips of waves be able to suddenly land on a pier piling, or owls grab a mouse at 64 kilometers per hour without missing a beat? Robot birds must be able to do the same—something that has been a challenge, until now.

In a new study, researchers analyzed the anatomy and behavior of a tiny American parrot called a parrotlet and peregrine falcons, two species known for their expert footwork. They then designed “SNAG” (Stereotyped Nature-Inspired Aerial Grasper) — a pair of jointed legs attached to feet with jointed talons that automatically close around any object they encounter, be it a dowel, branch, or tennis ball.

Jul 25, 2024

Does heat travel differently in tight spaces? New insights into convection heat and fluid mechanics

Posted by in category: food

A search for “air fryer recipe” on most social media platforms likely returns a flood of food videos touting quick and easy meal ideas. The market touts these devices as a convenient, clean, quick way to heat and crispen food, that offers a typically healthier option to using conventional deep fryers.

Jul 25, 2024

Unlocking the Fourth Dimension: How Synthetic Dimensions Are Redefining Physics

Posted by in categories: innovation, quantum physics

Researchers developed adjustable arrays of waveguides that introduce synthetic modal dimensions, enhancing the management of light within photonic systems. This innovation has potential applications ranging from mode lasing to quantum optics and data transmission.

In the realm of physics, synthetic dimensions (SDs) have emerged as a cutting-edge research frontier, providing a means to investigate phenomena in higher-dimensional spaces beyond our conventional 3D geometry. This concept has gained substantial attention, particularly in topological photonics, due to its potential to reveal complex physics that cannot be accessed within traditional dimensions.

Researchers have proposed various theoretical frameworks to study and implement SDs, aiming at harnessing phenomena like synthetic gauge fields, quantum Hall physics, discrete solitons, and topological phase transitions in four dimensions or higher. Those proposals could lead to new fundamental understandings in physics.

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