Hyperpolic shear polaritons in low-symmetry crystals
Scientists from the Fritz Haber Institute of the Max Planck Society, Vanderbilt University, City University of New York, University of Nebraska, and University of Iowa have just published new results on asymmetric light-matter waves in the journal Na.....»»
Iron snow ebb and flow may cause magnetic fields to come and go
Just as snow crystals form in the upper atmosphere, then fall to lower, warmer elevations and melt, scientists believe a phenomenon called iron snow happens in the molten iron cores of some planetary bodies. Cooling near the core-mantle boundary crea.....»»
In quest to prevent debilitating traumatic brain injuries, new foam material rises to the top
From falls to football tackles, most blows to the head occur at odd angles. And those impacts trigger simultaneous linear and rotational head motions. The rotating movement in particular causes shear strain, which is especially damaging to the brain......»»
Shedding light on the origin of the photovoltaic effect in organic–inorganic perovskites
A team led by RIKEN researchers has investigated how special crystals convert light into electricity. Their findings will help inform efforts to improve their efficiency, which could lead to the crystals being used in solar cells. The study is publis.....»»
Constraining the dynamics of rotating black holes via the gauge symmetry principle
In 2015, the LIGO/Virgo experiment, a large-scale research effort based at two observatories in the United States, led to the first direct observation of gravitational waves. This important milestone has since prompted physicists worldwide to devise.....»»
Photonic crystals could be exactly what Breakthrough Starshot is looking for
Light sail technology is a fascinating concept and a step change in rocket propulsion. It may not be big and impressive like the Saturn V, the Space Shuttle or the new Starship rocket but when it comes to traveling among the stars, light sails could.....»»
Facial symmetry doesn"t explain "beer goggles" phenomenon, research shows
If you thought blurry eyes were to blame for the "beer goggles" phenomenon, think again......»»
Unlocking the secrets of oobleck—strange stuff that’s both liquid and solid
Scientists tested hypothesis with dense suspensions of piezoelectric nanoparticles. Enlarge / "Oobleck" is a classic kitchen science example of a shear-thickening non-Newtonian fluid. (credit: Screenshot/PBS) Oobleck has.....»»
Generative model unveils secrets of material disorder
National University of Singapore (NUS) scientists have utilized generative machine learning models to explore the different methods in which atoms between adjacent crystals in a piezoelectric material, which are materials that generate a small electr.....»»
Researchers develop first-of-its-kind woven material made entirely from flexible organic crystals
Applying simple, ancient weaving techniques to newly recognized properties of organic crystals, researchers with the Smart Materials Lab (SML) and the Center for Smart Engineering Materials (CSEM) at NYU Abu Dhabi (NYUAD) have, for the first time, de.....»»
First experimental evidence of hopfions in crystals: Research opens up new dimension for future technology
Hopfions, magnetic spin structures predicted decades ago, have become a hot and challenging research topic in recent years. In a study published in Nature, the first experimental evidence is presented by a Swedish-German-Chinese research collaboratio.....»»
OpenAI to name ex-Twitch chief Emmett Shear as new boss
The tech firm will reportedly appoint Emmett Shear while ousted chief Sam Altman is joining Microsoft......»»
OpenAI to name new boss after firing co-founder
The tech firm will reportedly appoint Emmett Shear after the chaotic ousting of former chief Sam Altman......»»
Making high-quality crystals that resonate strongly with infrared light
Combining electronics with infrared light can enable small, fast, and sensitive devices for sensing, imaging, and signaling at the molecular level. However, in the infrared spectrum, materials must meet strict quality requirements for their crystals.....»»
Manipulating nonlinear exciton polaritons in a WS2 monolayer with artificial lattices
Exciton polaritons, hybrid quasiparticles caused by the strong exciton-photon coupling, constitute a unique prototype for studying many-body physics and quantum photonic phenomena traditionally in cryogenic conditions......»»
Phonon engineering for extended lasing beyond the fluorescence spectrum
The electron and phonon are two fundamental particles (quasi-particles) of condensed matter and their interplay in single crystals can create many interesting physical phenomena, such as polaritons, charge density waves and up-conversion fluorescence.....»»
Researchers develop nonlinear optical crystals by unusual cationic substitution strategy
An ideal infrared (IR) nonlinear optical (NLO) crystal must have the advantages of a wide transmittance range, impressive laser-induced damage threshold (LIDT), sufficient birefringence index, bulk single-crystal form, and physicochemical stability......»»
Quantum dots: the tiny "rainbow" crystals behind chemistry Nobel
Quantum dots are tiny crystals that scientists can tune to different colors, giving an extra-vivid pop to next-generation TV screens or illuminating tumors inside bodies so surgeons can hunt them down......»»
Researchers advance effort to turn diamonds into a quantum simulator
Diamonds are often prized for their flawless shine, but Chong Zu, an assistant professor of physics in Arts & Sciences at Washington University in St. Louis, sees a deeper value in these natural crystals. As reported in Physical Review Letters, Zu an.....»»
Revolutionary X-ray microscope unveils sound waves deep within crystals
Researchers at the Department of Energy's SLAC National Accelerator Laboratory. Stanford University, and Denmark Technical University have designed a cutting-edge X-ray microscope capable of directly observing sound waves at the tiniest of scales—t.....»»
Researchers create formula for first synthetic sugarcane molasses with fully reproducible composition
Molasses, a broad term used to describe concentrated sugarcane or sugarbeet juice solutions after removal of sucrose crystals, are an industrial byproduct of the raw sugar production process. Natural molasses have variable compositions that are not e.....»»