Physics

The new method for measuring nanostructured light fields

September 22, 2019

Structured laser light is already used in many applications: it can cut material more precisely, capture and move smallest particles or cell compartments, or enable a higher data rate in the next computer generation. Focusing on structured light rays through a strong lens, similar to a magnifying glass as a burning glass, creates three-dimensional light […]

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Produces and displays a ring of 18 carbon atoms for the first time

September 18, 2019

Carbon, one of the most abundant elements in the universe, can exist in different forms – called allotropes – giving it completely different properties from color to shape to hardness. For example, in a diamond every carbon atom is bonded to four neighboring carbons, whereas in graphite, every carbon atom is bonded to three neighboring […]

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New method for detecting quantum states of electrons

September 17, 2019

Quantum computing harnesses enigmatic properties of small particles to process complex information. But quantum systems are fragile and error-prone, and useful quantum computers have yet to come to fruition.

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The researchers created a synthetic Hall effect to achieve one-way radio transmissions

September 15, 2019

Researchers at the University of Illinois at Urbana-Champaign have replicated one of the most well-known electromagnetic effects in physics, the Hall effect, using radio waves (photons) instead of electric current (electrons). Their technique could be used to create advanced communication systems that boost signal transmission in one direction while simultaneously absorbing signals going in the […]

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Solving the old mystery of how friction leads to static electricity

September 14, 2019

Most people have experienced the hair-raising effect of rubbing a balloon on their head or the subtle spark caused by dragging socked feet across the carpet. Although these experiences are common, a detailed understanding of how they occur has eluded scientists for more than 2,500 years.

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The graphene layer allows high resolution pre-microscopy

September 8, 2019

Researchers at the University of Göttingen have developed a new method that takes advantage of the unusual properties of graphene to electromagnetically interact with fluorescing (light-emitting) molecules. This method allows scientists to optically measure extremely small distances, in the order of 1 ångström (one ten-billionth of a meter) with high accuracy and reproducibility for the […]

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The laser-based ultrasound approach offers a new direction for undamaged testing

September 7, 2019

Many industrial buildings, including nuclear power plants and chemical plants, rely on ultrasound instruments that continually monitor the structural integrity of their systems without damaging or altering their features. One new technique draws on laser technology and candle soot to generate effective ultrasonic waves for nondestructive testing and evaluation.

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Exotic physics phenomena were observed for the first time

September 7, 2019

An exotic physical phenomenon, involving optical waves synthetic magnetic fields, and time reversal, has been directly observed for the first time, following decades of attempts. The new finding could lead to realizations of what are known as topological phases, and eventually to advances toward fault tolerant quantum computers the researchers say.

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A new type of electromagnetic wave has been discovered

September 7, 2019

Electromagnetic surface waves guided by the planar interface of an isotropic dielectric medium and a uniaxial dielectric medium, both non dissipative, were considered, the optic axis of the uniaxial medium lying in the interface plane.

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Light propagation on a quantum computer

September 5, 2019

Scientists at Linköping University have shown how a quantum computer really works and have managed to simulate quantum computer properties in a classical computer. Our results should be highly significant in determining how to build quantum computers.

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