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Search results for electromagnetic fields

Optics & Photonics Dec 21, 2023

Probing for THz radiation directly at the source

The search for and development of efficient terahertz (THz) sources is one of the major scientific goals of the 21st century. The THz region of the electromagnetic spectrum is composed of light frequencies in between the ...

Astronomy Dec 4, 2023

Tracking undetectable space junk

Satellite and spacecraft operators may finally be able to detect small pieces of debris orbiting Earth using an approach proposed by researchers from the University of Michigan.

Nanophysics Dec 4, 2023

On/off in trillionths of a second: Optically controlled magnetic fields

Âé¶¹ÒùÔºicists at the University of Duisburg-Essen and their cooperating partners have discovered that tiny graphene sheets can become electromagnets under infrared radiation. The study is published in the journal Nature Communications.

Astronomy Nov 23, 2023

Telescope Array detects second-highest-energy cosmic ray ever

In 1991, the University of Utah Fly's Eye experiment detected the highest-energy cosmic ray ever observed. Later dubbed the Oh-My-God particle, the cosmic ray's energy shocked astrophysicists. Nothing in our galaxy had the ...

Astronomy Nov 14, 2023

Answering longstanding questions about jets from black holes

The one thing everyone knows about black holes is that absolutely everything nearby gets sucked into them. Almost everything, it turns out.

Optics & Photonics Nov 7, 2023

An optical and electrically driven single-molecule Raman switch

The role of molecular junctions in nanoelectronics is most often associated with electronic transport; however, their precise characterization hinders their widespread development. Recently, most research has focused on investigating ...

Optics & Photonics Nov 7, 2023

'Hot' new form of microscopy examines materials using evanescent waves

Microscopes usually use backscattered radiation to create images, but a research group from the Institute of Industrial Science at the University of Tokyo is developing a new method to study materials using the faint light ...

Nanophysics Nov 6, 2023

Single nanoscale hybrid system for studying the vacuum fluctuation field

When you think of empty space, you almost certainly imagine a vacuum in which nothing interesting can ever happen. However, if we zoom in to tiny length scales where quantum effects start to become important, it turns out ...

General Âé¶¹ÒùÔºics Nov 3, 2023

Âé¶¹ÒùÔºicists ask: Can we make a particle collider more energy efficient?

Ever since the discovery of the Higgs boson in 2012, physicists have wanted to build new particle colliders to better understand the properties of that elusive particle and probe elementary particle physics at ever-higher ...

Condensed Matter Nov 3, 2023

Vacuum in optical cavity can change material's magnetic state without laser excitation

Researchers in Germany and the U.S. have produced the first theoretical demonstration that the magnetic state of an atomically thin material, α-RuCl3, can be controlled solely by placing it into an optical cavity. Crucially, ...

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