Laser wakefield acceleration, a process where electron acceleration is driven by high-powered lasers, is well-known for being able to produce high-energy beams of electrons in tabletop-scale distances. However, in recent experiments, a team of scientists revealed new, never-before-seen electron ring formations in addition to the typically observed beams.
Researchers have solved a key obstacle in creating the underlying technology for miniature optical sensors to detect chemicals and biological compounds, high-precision spectroscopy, ultra-stable microwave sources and optical communications systems that transmit greater volumes of information with better quality.
Once mercury is emitted into the atmosphere from the smokestacks of power plants, the pollutant has a complicated trajectory; even after it settles onto land and sinks into oceans, mercury can be re-emitted back into the atmosphere repeatedly. This so-called “grasshopper effect” keeps the highly toxic substance circulating as “legacy emissions” that, combined with new smokestack emissions, can extend the environmental effects of mercury.
Colossal magnetoresistance is a property with practical applications in a wide array of electronic tools including magnetic sensors and magnetic RAM. New research from a team has successfully used high-pressure conditions to induce colossal magnetoresistance, for the first time, in a pure sample of a compound called lanthanum manganite, LaMnO3.
You’re driving down the highway in your Honda Civic. You press the pedal to the metal and the speedometer flips to 90 as you torque into the fast lane. How much effort have you, and the car, expended? No, this is not a pop quiz in a physics class.
Graphene, an atom-thick material with extraordinary properties, is a promising candidate for the next generation of dramatically faster, more energy-efficient electronics. However, scientists have struggled to fabricate the material into ultra-narrow strips, called nanoribbons, that could enable the use of graphene in high-performance semiconductor electronics.
Since its conception, quantum mechanics has defied our natural way of thinking, and it has forced physicists to come to grips with peculiar ideas. Although they may be difficult to digest, quantum phenomena are real. What's more, in the last decades, scientists have shown that these bizarre quantum effects can be used for many astonishingly powerful applications.
Using an innovative method, EPFL scientists show that the brain is not as compact as we have thought all along. To study the fine structure of the brain, including its connections between neurons, the synapses, scientists must use electron microscopes. However, the tissue must first be fixed to prepare it for this high magnification imaging method.
A comprehensive understanding of complex nanostructures could lead to breakthroughs in some of the most challenging problems in biology and medicine. But because these objects are a thousand times smaller than the width of human hair, scientists can’t directly see into them to determine their shape and function.
A new study provides guidance to health officials and drinking water providers on how to decontaminate plumbing systems. The study is the first step toward science-based flushing protocols that can be applied to recover from a drinking water contamination incident.
Massachusetts Institute of Technology physicists have created a superfluid gas, the so-called Bose-Einstein condensate, for the first time, in an extremely high magnetic field. The magnetic field is a synthetic magnetic field, generated using laser beams, and is 100 times stronger than that of the world’s strongest magnets. Within this magnetic field, the researchers could keep a gas superfluid for a tenth of a second.
A researcher now at the Univ. of Central Florida has developed a new method for identifying materials’ unique chemical “fingerprints” and mapping their chemical properties at a much higher spatial resolution than ever before. It’s a discovery that could have promising implications for fields as varied as biofuel production, solar energy, opto-electronic devices, pharmaceuticals and medical research.
Researchers who have revealed a highly efficient way that bacteria use toxins to interrupt the immune response say that until now, the trickery of these toxins has been underappreciated in science. Bacteria harm the body by releasing toxins. Always targeting essential molecules, toxins typically go after molecules that are either scarce or whose role is to send important signals.
Two Russian crewmembers at the International Space Station have begun a spacewalk to install new equipment and inspect the orbiting outpost's exterior.
Hidden on hillsides in a remote part of western Vermont, a small number of venomous timber rattlesnakes slither among the rocks, but their isolation can't protect them from a mysterious fungus spreading across the eastern half of the country that threatens to wipe them out.