Physics

2-D spintronics has already transformed computing – now we're making it work in three dimensions

Spintronics might not be the sort of word that comes up in everyday discussions, but it has been revolutionising computer technology for years. It's the branch of physics that involves manipulating the spin of a flow of electrons, which first reached consumers in the late 1990s in the form of magnetic computer hard drives with several hundreds of times the storage capacity of their predecessors.

Electron bunches keep ions cool at RHIC

Accelerator physicists have demonstrated a groundbreaking technique using bunches of electrons to keep beams of particles cool at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy Office of Science user facility for nuclear physics research at Brookhaven National Laboratory. This "bunched-beam" electron cooling technique will enable higher particle collision rates at RHIC, where scientists study the collision debris to learn about the building blocks of matter as they existed just after the Big Bang.

Using physics to print living tissue

Bioprinting is a relatively new technology that has advanced mostly by trial and error. Scientists are now using the laws of physics and predictive computer modeling to improve these techniques and optimize the bioprinting process.

Researchers develop superconducting quantum refrigerator

Researchers have harnessed superconductivity to conceive of a quantum refrigerator that could cool atoms to nearly absolute zero temperatures.

Dowsing for electric fields in liquid crystals

You may not know it, but you probably spend several hours a day looking at nematic liquid crystals; they are used in virtually every smartphone, computer and TV screen. They are liquids composed of elongated molecules, which in some situations can be oriented in a curious way termed the 'dowser texture', which is sensitive to external conditions.

Laws of physics replace trial and error in new approaches to bioprinting

3-D printers can be used to make a variety of useful objects by building up a shape, layer by layer. Scientists have used this same technique to "bioprint" living tissues, including muscle and bone.

3-D magnetic interactions could lead to new forms of computing

A new form of magnetic interaction which pushes a formerly two-dimensional phenomenon into the third dimension could open up a host of exciting new possibilities for data storage and advanced computing, scientists say.

Can we model heavy nuclei from first principles? 

Modelling the properties of atomic nuclei is a demanding task. It requires a theory that we can apply to a large variety of nuclear species regardless of their masses. M.Sc. Gianluca Salvioni's doctoral dissertation on theoretical nuclear physics attempts formulating such a theory by using inputs from accurate first-principle calculations available for light nuclei.

Researchers demonstrate continuous lasing action in devices made from perovskite materials

Lead-halide perovskites are considered one of the most promising materials for the production of the lasers of the future. A new joint Tel Aviv University (TAU) and Karlsruhe Institute of Technology (KIT) study published in Nature Communications on February 28 demonstrates remarkable continuous lasing action in devices made from perovskites.

2D crystals conforming to 3D curves create strain for engineering quantum devices

Scientists have explored how atomically thin two-dimensional crystals can grow over three-dimensional objects and how the curvature of those objects can stretch and strain the crystals. The findings point to a strategy for engineering strain directly during the growth of atomically thin crystals to fabricate single photon emitters for quantum information processing.

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