https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. MXene is a lightweight two-dimensional (2D) material capable of protecting everything—including spacecraft, mechanical components, and maybe even people—from harmful radiation. Because traditional synthesis requires multi-step processes that can take up to 40 hours, MXene is difficult to produce. https://phys.org/news/2025-03-microwave-synthesis-mxene-faster-traditional.html Nanomaterials Mon, 10 Mar 2025 15:09:03 EDT news660838141 An international team of researchers has developed a way to create non-radiating sources of electromagnetism. In their paper published in the journal Physical Review Letters, the group describes their technique and how well it worked when they tested a model based on their ideas. https://phys.org/news/2021-09-non-radiating-source-electromagnetism.html General Physics Tue, 07 Sep 2021 08:50:01 EDT news550221254 According to theoretical predictions, axion dark matter could be converted into radio frequency electromagnetic radiation when it approaches the strong magnetic fields that surround neutron stars. This radio signature, which would be characterized by an ultranarrow spectral peak at a frequency that depends on the mass of the axion dark matter particle in question, could be detected using high-precision astronomical instruments. https://phys.org/news/2020-11-axion-dark-conversion-magnetic-fields.html General Physics Fri, 20 Nov 2020 09:30:02 EST news525078479 Particle accelerators generate high-energy beams of electrons, protons and ions for a wide range of applications, including particle colliders that shed light on nature's subatomic components, X-ray lasers that film atoms and molecules during chemical reactions and medical devices for treating cancer. https://phys.org/news/2020-09-slac-particle-smaller.html General Physics Thu, 24 Sep 2020 04:12:36 EDT news520139547 A wireless, battery-less pacemaker that can be implanted directly into a patient's heart is being introduced by researchers from Rice University and their colleagues at the Texas Heart Institute (THI) at the IEEE's International Microwave Symposium (IMS) in Honolulu June 4-9. https://phys.org/news/2017-06-debut-battery-less-pacemaker.html Engineering Mon, 05 Jun 2017 16:04:37 EDT news415897464 The terahertz waves span frequency ranges between the infrared spectrum (used, for example, for night vision) and gigahertz waves (which find their application, among other, in Wi-Fi connections). Terahertz waves allow for the detection of materials that are undetectable at other frequencies. However, the use of these waves is severely limited by the absence of suitable devices and materials allowing to control them. Researchers at the University of Geneva (UNIGE), working with the Federal Polytechnic School in Zurich (ETHZ) and two Spanish research teams, have developed a technique based on the use of graphene, which allows for the potentially very quick control of both the intensity and the polarization of terahertz light. This discovery, presented in Nature Communications, paves the way for a practical use of terahertz waves, in particular for imaging and telecommunications. https://phys.org/news/2017-03-mastering-terahertz.html Optics & Photonics Tue, 07 Mar 2017 08:20:05 EST news408095029 Light can come in many frequencies, only a small fraction of which can be seen by humans. Between the invisible low-frequency radio waves used by cell phones and the high frequencies associated with infrared light lies a fairly wide swath of the electromagnetic spectrum occupied by what are called terahertz, or sometimes submillimeter, waves. Exploitation of these waves could lead to many new applications in fields ranging from medical imaging to astronomy, but terahertz waves have proven tricky to produce and study in the laboratory. Now, Caltech chemists have created a device that generates and detects terahertz waves over a wide spectral range with extreme precision, allowing it to be used as an unparalleled tool for measuring terahertz waves. https://phys.org/news/2015-04-chemists-terahertz-extreme-precision.html General Physics Wed, 22 Apr 2015 07:18:22 EDT news348905869 (Phys.org)—Researchers at the University of Southampton have developed a model which explains how the spin of a pulsar slows down as the star gets older. https://phys.org/news/2012-10-pulsars-age.html Astronomy Tue, 09 Oct 2012 09:09:26 EDT news268992559 Nobody ever said anything about singing, though. A NASA spacecraft has just beamed back a beautiful song sung by our own planet. https://phys.org/news/2012-10-nasa-spacecraft-earthsong.html Space Exploration Mon, 01 Oct 2012 08:14:28 EDT news268298053 Described in the March 10 issue of Nature, the NIST experiments created strong interactions between microwave light oscillating 7.5 billion times per second and a "micro drum" vibrating at radio frequencies 11 million times per second. Compared to previously reported experiments combining microscopic machines and electromagnetic radiation, the rate of energy exchange in the NIST device -- the "coupling" that reflects the strength of the connection -- is much stronger, the mechanical vibrations last longer, and the apparatus is much easier to make. https://phys.org/news/2011-03-electromechanical-circuit-microscopic.html General Physics Wed, 09 Mar 2011 13:20:16 EST news218899179 (PhysOrg.com) -- Investigating mysterious data in ultracold gases of rubidium atoms, scientists at the Joint Quantum Institute of the National Institute of Standards and Technology and the University of Maryland and their collaborators have found that properly tuned radio-frequency waves can influence how much the atoms attract or repel one another, opening up new ways to control their interactions. https://phys.org/news/2009-10-physicists-radio-dial-finer-atomic.html General Physics Tue, 20 Oct 2009 18:24:24 EDT news175281818