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Search results for electromagnetic fields

Optics & Photonics Mar 20, 2023

Direct field-to-pattern monolithic design of holographic metasurface

Metasurfaces, as two-dimensional metamaterials, display fascinating ability in electromagnetic (EM) modulation within a sub-wavelength scale, opening up a new way for manipulating the properties of EM wave in a plane. Owing ...

Optics & Photonics Mar 2, 2023

Scientists push the boundaries of manipulating light at the submicroscopic level

A team of researchers led by the University of Southampton has shown light can be moved within a distance which is smaller than its own wavelength—a level of unprecedented precision.

Plasma Âé¶¹ÒùÔºics Feb 14, 2023

A multi-turn energy recovery accelerator that achieves high beam power with lower power consumption

Particle accelerators are devices that use electromagnetic fields to speed up particles and collide them together or against a specific target. These devices are widely used by physicists to study particles, the forces that ...

General Âé¶¹ÒùÔºics Feb 13, 2023

New analysis shows atoms slow down more within colder blackbody radiation

New analysis shows that atoms will encounter high frictional forces in the presence of blackbody radiation at lower temperatures. Accounting for this effect could help researchers to improve the accuracy of high-precision ...

Optics & Photonics Feb 7, 2023

Understanding laser-accelerated electron radiation through terahertz emissions

The terahertz (THz) gap, a frequency band lying between the microwave and infrared regions of the electromagnetic spectrum where conventional technologies are inefficient in generating and detecting the radiation, is being ...

Optics & Photonics Feb 2, 2023

Efficient calibration of wavelength-dependent transmission through optical multimode fiber

Researchers at the Wellman Center for Photomedicine have demonstrated that wavelength-dependent changes in the spatial distribution of light transmitted through a multimode optical fiber are not random but highly predictable.

Analytical Chemistry Jan 30, 2023

Scientists propose novel NO2 sensor based on static magnetic field Faraday rotation spectroscopy

A low-power Faraday rotation spectroscopy (FRS) nitrogen dioxide (NO2) sensor basing on ring array permanent magnets was proposed by researchers led by Prof. Gao Xiaoming from the Hefei Institutes of Âé¶¹ÒùÔºical Science of the ...

Quantum Âé¶¹ÒùÔºics Jan 26, 2023

Study achieves the coherent manipulation of electron spins in silicon

In recent years, many physicists and computer scientists have been working on the development of quantum computing technologies. These technologies are based on qubits, the basic units of quantum information.

Quantum Âé¶¹ÒùÔºics Jan 18, 2023

Researcher posits that electrons do spin, thanks to their fields

Deep inside all matter in the universe, electrons are buzzing around and behaving as if they are twirling around on their axes like spinning tops. These "spinning" electrons are fundamental to quantum physics and play a central ...

Bio & Medicine Jan 18, 2023

Super-quick COVID test uses new technology

Sticking swabs up our noses and down our throats to confirm or deny whether we are infected with the coronavirus—almost all of us have done it multiple times in the last couple of years.

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