Cheers! Maxwell’s electromagnetism extended to smaller scales

More than one hundred and fifty years have passed since the publication of James Clerk Maxwell’s “A Dynamical Theory of the Electromagnetic Field” (1865). What would our lives be without this publication? It is difficult to imagine, as this treatise revolutionized our fundamental understanding of electric fields, magnetic fields, and light. The twenty original equations … Read more Cheers! Maxwell’s electromagnetism extended to smaller scales

How to induce magnetism in graphene

Graphene, a two-dimensional structure made of carbon, is a material with excellent mechanical, electronic and optical properties. However, it did not seem suitable for magnetic applications. Together with international partners, Empa researchers have now succeeded in synthesizing a unique nanographene predicted in the 1970s, which conclusively demonstrates that carbon in very specific forms has magnetic … Read more How to induce magnetism in graphene

QUB’s scientist leads international team to crack 60-year-old mystery of Sun’s magnetic waves

A Queen’s University Belfast scientist has led an international team to the ground-breaking discovery of why the Sun’s magnetic waves strengthen and grow as they emerge from its surface, which could help to solve the mystery of how the corona of the Sun maintains its multi-million degree temperatures. For more than 60 years observations of … Read more QUB’s scientist leads international team to crack 60-year-old mystery of Sun’s magnetic waves

Injection of magnetizable fluid could extend trauma patients’ survival time

Inspired by their use in mechanical systems, Massachusetts Institute of Technology researchers are testing a magnetically-actuated fluidic valve to use in trauma patients suffering from hemorrhage. Yonatan Tekleab and his colleagues will explain how the valve works at the American Physical Society’s Division of Fluid Dynamics 72nd Annual Meeting on Nov. 25 at the Washington … Read more Injection of magnetizable fluid could extend trauma patients’ survival time

On the way to intelligent microrobots

Researchers at the Paul Scherrer Institute PSI and ETH Zurich have developed a micromachine that can perform different actions. First nanomagnets in the components of the microrobots are magnetically programmed and then the various movements are controlled by magnetic fields. Such machines, which are only a few tens of micrometres across, could be used, for … Read more On the way to intelligent microrobots

Magneto-inertial fusion experiment nears completion

Assembly of the Plasma Liner Experiment (PLX) at Los Alamos National Laboratory is well underway with the installation of 18 of 36 plasma guns in an ambitious approach to achieving controlled nuclear fusion (Figure 1). The plasma guns are mounted on a spherical chamber, and fire supersonic jets of ionized gas inward to compress and … Read more Magneto-inertial fusion experiment nears completion

Fuel injection helps reduce magnetic island instabilities

Fusion is a non-carbon-based process for energy production, where lighter atoms fuse into heavier ones. Fusion reactors operate by confining a “soup” of charged particles, known as a plasma, within powerful magnetic fields. But these magnetic fields must contain the plasma long enough that it can be heated to extreme temperatures – hotter than the … Read more Fuel injection helps reduce magnetic island instabilities

Bringing astrophysical processes down to Earth

Magnetic reconnection, a process in which magnetic field lines tear and come back together, releasing large amounts of kinetic energy, occurs throughout the universe. The process gives rise to auroras, solar flares and geomagnetic storms that can disrupt cell phone service and electric grids on Earth. A major challenge in the study of magnetic reconnection, … Read more Bringing astrophysical processes down to Earth

More energy instead of heat by planting magnetic spins into a quantum dot

Los Alamos scientists have demonstrated that using chemically synthesized, magnetically doped quantum dots a few nanometers (billionths of a meter) across allows them to capture the kinetic energy of electrons created by ultraviolet light before it’s wasted as heat. “This discovery can potentially enable novel, highly-efficient solar cells, light detectors, photocathodes and light-driven chemical reactions,” … Read more More energy instead of heat by planting magnetic spins into a quantum dot

Experimental physicists redefine ultrafast, coherent magnetism

Electronic properties of materials can be directly influenced via light absorption in under a femtosecond (10-15 seconds), which is regarded as the limit of the maximum achievable speed of electronic circuits. In contrast, the magnetic moment of matter has only been able to be influenced up to now by a light and magnetism-linked process and … Read more Experimental physicists redefine ultrafast, coherent magnetism