Scientists have developed the first electrically pumped continuous-wave semiconductor laser composed exclusively of elements from the fourth group of the periodic table—the “silicon group.”
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Scientists have developed the first electrically pumped continuous-wave semiconductor laser composed exclusively of elements from the fourth group of the periodic table—the “silicon group.” Go to Source About 100 years ago, humanity learned to see with the help of electrons. In 1924, Louis de Broglie posited that—like light particles—electrons have wave properties. In 1927, the U.S. physicists Davisson and Germer provided experimental proof of this. Go to Source Quantum error correction that suppresses errors below a critical threshold needed for achieving future practical quantum computing applications is demonstrated on the newest generation quantum chips from Google Quantum AI, reports a paper in Nature this week. The device performance, if scaled, could facilitate the operational requirements of large-scale fault-tolerant quantum computing. Go to Source […] A new study by Rice University physicist Qimiao Si unravels the enigmatic behaviors of quantum critical metals—materials that defy conventional physics at low temperatures. Published in Nature Physics Dec. 9, the research examines quantum critical points (QCPs), where materials teeter on the edge between two distinct phases, such as magnetism and nonmagnetism. The findings illuminate […] Overheating in electronic devices affects how it works and how long it lasts. One of the major challenges is efficiently managing the heat generated by these systems during operation, which involves controlling the thermal conductivity of the materials they comprise. While electric current can be easily manipulated in conventional electronic materials, heat presents a different […] The death of at least 56 people in a stampede at a soccer stadium in Nzérékoré, Guinea, is the latest example of how quickly mass gatherings can turn catastrophic. Go to Source We tie our shoes, we put on neckties, we wrestle with power cords. Yet despite deep familiarity with knots, most people cannot tell a weak knot from a strong one by looking at them, new Johns Hopkins University research finds. Go to Source Researchers have found a way to manipulate special hybrid particles called polaritons—which behave like both light and matter—at room temperature. The breakthrough enables the use of polaritons in high-speed computing and data processing. Go to Source Science often surprises us with its ability to connect seemingly unrelated phenomena. Have you ever stopped to marvel at how nature arranges itself into intricate patterns, like the spirals of a sunflower or the crystals in frost? These patterns are the result of self-organization, a phenomenon that continues to fascinate scientists and drive exploration. Go […] A team of researchers from the University of Cologne, Hasselt University (Belgium) and the University of St Andrews (Scotland) has succeeded in using the quantum mechanical principle of strong light-matter coupling for an optical technology that overcomes the long-standing problem of angular dependence in optical systems. Go to Source Physicists soon will be closer than ever to answering fundamental questions about the origins of the universe by learning more about its tiniest particles. Go to Source A joint research team led by Yuuki Kubo and Shiji Tsuneyuki of the University of Tokyo has developed a new computational method that can efficiently determine the crystal structures of multiphase materials, powders that contain more than one type of crystal structures. The method can predict the structure directly from powder X-ray diffraction patterns, the […] Scientists at the University of California, Irvine have uncovered the atomic-scale mechanics that enhance superconductivity in an iron-based material, a finding published recently in Nature. Go to Source A research team has clarified the mechanism behind the generation of runaway electrons during the startup phase of a tokamak fusion reactor. The paper, “Binary Nature of Collisions Facilitates Runaway Electron Generation in Weakly Ionized Plasmas,” was published in the journal Physical Review Letters. Go to Source Polarization photodetectors (pol-PDs) have widespread applications in geological remote sensing, machine vision, and biological medicine. However, commercial pol-PDs usually require bulky and complicated optical components and are difficult to miniaturize and integrate. Go to Source |
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