Textile scientists provide new insights into why some garments become smellier

Credit: Unsplash/CC0 Public Domain Ever notice that a polyester T-shirt stinks more than a cotton one after you work out? New research from the University of Alberta now shows why. Analysis of various fibers soaked in a solution of simulated sweat showed that cotton and viscose, cellulose fibers or vegetable fibers absorbed and then released … Read more

Researchers achieve time reversal through input-output indeterminacy

Experimental setup of the superposition of quantum evolution and its inverse evolution. Credit: Prof. Li Chuanfeng’s team A research team has constructed a coherent superposition of quantum evolution with two opposite directions in a photonic system and confirmed its advantage in characterizing input-output indeterminacy. The study was published in Physical assessment letters. The idea that … Read more

Researchers predict new phase in neutron stars that favors ‘nuclear pasta’

Phase diagram as a function of the total density 𝑛 and the proton fraction 𝑥 at N3⁢LO. The neutron droplet and proton droplet phases are given by the regions enclosed by the blue and red lines. Credit: Physical assessment letters (2024). DOI: 10.1103/PhysRevLett.132.232701 Neutron stars are extreme and mysterious objects that astrophysicists cannot see inside. … Read more

New forms of photons open doors to advanced optical technologies

Multiple photonic orbitals emerge within a photonic crystal superlattice. Credit: Physical assessment B (2024). DOI: 10.1103/PhysRevB.109.235141 Researchers from the University of Twente in the Netherlands have gained important insights into photons, the elementary particles that make up light. They ‘behave’ in an astonishingly greater variety than electrons that surround atoms, while also being much easier … Read more

Brain size mystery solved as humans outpace evolutionary trend

Rate of relative evolution of brain mass. Credit: Nature Ecology & Evolution (2024). DOI file: 10.1038/s41559-024-02451-3 The largest animals don’t have proportionally larger brains, and humans are an exception to this trend, according to a study published in Nature Ecology & Evolution has revealed. Researchers from the University of Reading and the University of Durham … Read more

A new approach to realizing quantum mechanical compression

Scheme of nonclassical mechanical states of a resonator-qubit combination. A transmon qubit capacitively couples to acoustic mechanical modes of a separate sapphire slab, one of which is shown as a series of blue and red antinodes. Nonclassical mechanical states emerge from this interaction. Three vignettes reproduce Wigner functions of i) a squeezed vibrational state, ii) … Read more

NASA astronauts unexpectedly spend July 4 at the International Space Station

Source: Pixabay/CC0 Public Domain Astronauts Suni Williams and Butch Wilmore spent an unexpected Fourth of July aboard the International Space Station, but it was hardly a patriotic display of technical prowess. The two NASA astronauts arrived at the space station on June 6 for what was supposed to be an eight-day mission. But their return … Read more

Crew of NASA’s simulated Mars habitat surfaces on Earth after a year

by Brian PD Hannon In this image taken from NASA video, Kelly Haston, a crew member of the first CHAPEA mission, speaks before other members, from left, Ross Brockwell, Nathan Jones and Anca Selariu, Saturday, July 6, 2024, at the Johnson Space Center in Houston, Texas. The crew of a NASA mission to Mars emerged … Read more

Alaska’s top-heavy glaciers approach irreversible tipping point

Credit: CC0 Public Domain The melting of one of North America’s largest ice fields has accelerated and could soon reach an irreversible tipping point. That’s the conclusion of new research colleagues and I who have published on the Juneau Ice Field, which straddles the Alaska-Canada border near Alaska’s capital, Juneau. In the summer of 2022, … Read more

Exploring the possibility of probing fundamental space-time symmetries via gravitational wave memory

Model selection between the original BMS symmetries (dashed lines) and the extended BMS symmetries (solid lines) with Einstein Telescope (ET) and Cosmic Explorer (CE). Evidence for the simulated symmetry group (log Bayes factor) is shown against observation time. Credit: Physical assessment letters (2024). DOI: 10.1103/PhysRevLett.132.241401 As predicted by general relativity, the passage of gravitational waves … Read more