Physics

Carbon fibers electrical measurements pave way for lightning strike protection technologies

Carbon fiber reinforced polymer composite structures are important in several industries, yet the electrical behavior of a composite is challenging to measure or predict because of the electrical conductivity of constituent carbon fibers and the composite's complex hierarchical microstructure. Researchers report a direct measurement of the transverse electrical resistivity of a single carbon fiber. The researchers combined a precise sample preparation with a technique called the van der Pauw method to accomplish this challenging measurement.

Electrons on the edge: The story of an intrinsic magnetic topological insulator

An intrinsic magnetic topological insulator MnBi2Te4 has been discovered with a large band gap, making it a promising material platform for fabricating ultra-low-energy electronics and observing exotic quantum phenomena.

Engineering researchers develop new explanation for formation of vortices in 2D superfluid

Researchers have new insight about the formation of vortices in a type of quantum fluid, work that could help our comprehension of the physics mystery of how vortex clusters form and provide valuable understanding into the atmospheric swirling motion on planets such as Earth and Jupiter.

New technique boosts cryo-electron microscopy clarity, safety

When scientists needed to visualize the structure of the spike protein, which coronaviruses use to infiltrate human cells, they turned to cryo-electron microscopy. One of the most powerful imaging tools in a researcher's arsenal, cryo-electron microscopy (cryo-EM) can visualize proteins, pathogens and sundry cell components almost down to their individual atoms.

Carbon fibers electrical measurements pave way for lightning strike protection technologies

Carbon fiber reinforced polymer composite structures are serving an increasingly important role in aerospace, infrastructure, energy generation, and transportation. Yet, the electrical behavior of a composite is challenging to measure or predict because of the electrical conductivity of constituent carbon fibers and the composite's complex hierarchical microstructure.

Rock shape should be given greater consideration in rockfall risk assessments

The shape of rocks is a key factor in assessing rockfall hazard. This is the conclusion of a new study from the Institute for Snow and Avalanche Research and ETH Zurich.

Scientists develop the next generation of reservoir computing

A relatively new type of computing that mimics the way the human brain works was already transforming how scientists could tackle some of the most difficult information processing problems.

The Cannibalistic Chaos Within Planetary Systems

Planet-eating stars may be far more common than scientists once thought.

Physicists probe light smashups to guide future research

Light has no mass, but Europe's Large Hadron Collider (LHC) can convert light's energy into massive particles. Physicists studied matter-generating collisions of light and showed the departure angle of their debris is subtly distorted by quantum interference patterns in the light prior to collision. Their findings will help physicists accurately interpret future experiments aimed at finding 'new physics' beyond the Standard Model.

A sandblaster at the atomic level

Modifying surfaces by shooting particles at them - this technique, called 'sputtering', is indispensable in surface science. However, if the surface is not perfectly smooth and regular, it is hard to predict the result of the sputtering process. Scientists have now managed to explain the effect of particles on rough surfaces during sputtering - with implications for fusion research and even astrophysics.

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