Physics

Articles from Science Daily Physics News

Reaching new heights in laser-accelerated ion energy

A laser-driven ion acceleration scheme could lead to compact ion sources for established and innovative applications in science, medicine and industry.

Laser-ranged satellite measurement now accurately reflects Earth's tidal perturbations

Tides on Earth have a far-reaching influence, including disturbing satellites' measurements by affecting their motion. The LAser RElativity Satellite (LARES), is the best ever relevant test particle to move in the Earth's gravitational field. In a new study, LARES proves its efficiency for high-precision probing of General Relativity and fundamental physics.

Shedding (high-power laser) light on the plasma density limit

Researchers theoretically proposed the existence of density limit for hole boring by laser light on matter. They derived the maximum plasma density as a function of laser intensity, where hole boring stops and plasma blowout occurs. Theory and simulation of an ultra-high-pressure plasma state, wherein plasma's density pushes light back in the direction of the laser source, contribute to fundamental understanding, and provided grounding for applications such as laser-induced nuclear fusion.

Quintillionths of a second in slow motion

Many chemical processes run so fast that they are only roughly understood. To clarify these processes, researchers have now developed a methodology with a resolution of quintillionths of a second. The new technology stands to help better understand processes like photosynthesis and develop faster computer chips.

Computers aid discovery of new, inexpensive material to make LEDs with high color quality

Computers have helped researchers develop a new phosphor that can make LEDs cheaper and render colors more accurately. Researchers predicted the new phosphor using supercomputers and data mining algorithms, then developed a simple recipe to make it in the lab. Unlike many phosphors, this one is made of inexpensive, earth-abundant elements and can easily be made using industrial methods. As computers predicted, the new phosphor performed well in tests and in LED prototypes.

Many colors from a single dot

Physicists have shown how even a separate single nanoparticle can be used to emit different colors of light. Their results show that the particles under consideration may be a very efficient and versatile tool to produce light of all colors at tiny scales.

Unconventional superconductor may be used to create quantum computers of the future

With their insensitivity to decoherence what are known as Majorana particles could become stable building blocks of a quantum computer. The problem is that they only occur under very special circumstances. Now researchers have succeeded in manufacturing a component that is able to host the sought-after particles.

Major discovery in controlling quantum states of single atoms

The scientists identified which mechanisms destroy the quantum properties of individual insulator. Using a Scanning Tunneling Microscope, which utilizes an atomically sharp metal tip, they were able to precisely image individual iron atoms and measure and control the time that the iron atom can maintain its quantum behavior.

Bringing a hidden superconducting state to light

Using high-intensity pulses of infrared light, scientists found evidence of superconductivity associated with charge 'stripes' in a material above the temperature at which it begins to transmit electricity without resistance -- a finding that could help them design better high-temperature superconductors.

Physicists create new form of light

Physicists have created a new form of light that could enable quantum computing with photons.

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