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News articles about "Light"

Cool electron acceleration: Electron pulses from laser accelerator

Electron, Electron, Electron
Physicists from the Max Planck Institute of Quantum Optics produced electron pulses from a laser accelerator whose individual particles all have nearly the same tuneable energy Electrons with a velocity close to the speed of ... - Read More

Cosmic rays: Galactic knee and extragalactic ankle

Cosmic rays
It is obvious from the data of the KASCADE Grande experiment at the Karlsruhe Institute of Technology KIT that the so called knee of the cosmic rays a bend in the energy spectrum at high ... - Read More

Cool electron acceleration

Electron, Electron, Electron
Physicists from the Max Planck Institute of Quantum Optics produced electron pulses from a laser accelerator whose individual particles all have nearly the same tuneable energy Electrons with a velocity close to the speed of ... - Read More

Elevated carbon dioxide making arid regions greener

Carbon, Carbon dioxide, Carbon dioxide, carbon
Scientists have long suspected that a flourishing of green foliage around the globe observed since the early 1980s in satellite data springs at least in part from the increasing concentration of carbon dioxide in Earth's ... - Read More

Klein tunneling: Coupled particles cross energy wall

Energy, Energy, Energy, energy, energy
Model demonstrates that it is possible for two particles to cross an energy barrier together where a single particle could not For the first time a new kind of so called Klein tunnelling representing the ... - Read More

Brittle material toughened: Tungsten-fiber-reinforced tungsten

Material, Material
Tungsten is particularly suitable as material for highly stressed parts of the vessel enclosing a hot fusion plasma it being the metal with the highest melting point A disadvantage however is its brittleness which under ... - Read More

Shape-shifting nanoparticles flip from sphere to net in response to tumor signal

tumor
Scientists at the University of California San Diego have designed tiny spherical particles to float easily through the bloodstream after injection then assemble into a durable scaffold within diseased tissue An enzyme produced by a ... - Read More

Models from big molecules captured in a flash

molecules, Flash
To learn how biological molecules like proteins function scientists must first understand their structures Almost as important is understanding how the structures change as molecules in the native state do their jobs Existing methods for ... - Read More

New analysis yields improvements in a classic 3-D imaging technique

Analysis
Research conducted at Curtin University in Perth has enabled significant increases in image quality in a widely used 3D printing technique that is more than 100 years old Anaglyph printing think of the red and ... - Read More

Atomic-scale investigations solve key puzzle of LED efficiency

Atomic
From the high resolution glow of flat screen televisions to light bulbs that last for years light emitting diodes LEDs continue to transform technology The celebrated efficiency and versatility of LEDs and other solid state ... - Read More

Spheres can form squares

Surface tension
Everybody who has tried to stack oranges in a box knows that a regular packing of spheres in a flat layer naturally leads to a hexagonal pattern where each sphere is surrounded by six neighbours ... - Read More

Optics: Statistics light the way

A revelation of how photoreceptive cells in the eye distinguish between different light sources could pave the way for a novel class of optical devices Millions of years of evolution have molded our eyes into ... - Read More

Detecting mirror molecules: New technique reliably tells left-handed from right-handed variant of a compound

Harvard physicists have developed a novel technique that can detect molecular variants in chemical mixtures greatly simplifying a process that is one of the most important though time consuming processes in analytical chemistry As described ... - Read More

New method for tailoring optical processors

Optical, Optical
Rice University scientists have unveiled a robust new method for arranging metal nanoparticles in geometric patterns that can act as optical processors that transform incoming light signals into output of a different color The breakthrough ... - Read More

Nanoantennas improve infrared sensing

Light, Light
A team of University of Pennsylvania engineers has used a pattern of nanoantennas to develop a new way of turning infrared light into mechanical action opening the door to more sensitive infrared cameras and more ... - Read More

World's smallest liquid droplets ever made in the lab, experiment suggests

Collisions
Physicists may have created the smallest drops of liquid ever made in the lab That possibility has been raised by the results of a recent experiment conducted by Vanderbilt physicist Julia Velkovska and her colleagues ... - Read More

Team wins Cubesat berth to gather Earth energy imbalance measurements

Earth, earth
A team of scientists has won a berth on a tiny satellite to explore one of NASA's most important frontiers in climate studies the imbalance in Earth's energy budget and the extent to which fast ... - Read More

Artificial forest for solar water-splitting: First fully integrated artificial photosynthesis nanosystem

Photosynthesis
In the wake of the sobering news that atmospheric carbon dioxide is now at its highest level in at least three million years an important advance in the race to develop carbon neutral renewable energy ... - Read More

New insights into how materials transfer heat could lead to improved electronics

U of T Engineering researchers working with colleagues from Carnegie Mellon University have published new insights into how materials transfer heat which could lead eventually to smaller more powerful electronic devices Integrated circuits and other ... - Read More

DNA-guided assembly yields novel ribbon-like nanostructures

Nanostructures
Scientists at the U S Department of Energy's Brookhaven National Laboratory have discovered that DNA linker strands coax nano sized rods to line up in way unlike any other spontaneous arrangement of rod shaped objects ... - Read More
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