In an advance that could push cheap, ubiquitous solar power closer to reality, University of Michigan researchers have found a way to coax electrons to travel much further than was previously thought possible in the materials often used for organic solar cells and other organic semiconductors.
Excitonium sounds like a made-up substance from a children’s graphic novel. But it is an actual scientific word, coined 50 years ago to describe new a type of matter, which scientists believed should exist, but weren’t able to prove-until now. Physicists at the University of Illinois said that they have now proven that excitonium really …
Physicists at the University of California, Riverside have developed a photodetector – a device that senses light – by combining two distinct inorganic materials and producing quantum mechanical processes that could revolutionize the way solar energy is collected.
Researchers have at last been able to model the behaviour of electrons under extreme densities and temperatures, similar to those found inside stars and planets.
Virginia Commonwealth University researchers have achieved a feat that is a first in the fields of physics and chemistry-one that could have wide-ranging applications.
The “hollow atoms”, which are being produced in the labs of TU Wien (Vienna) are quite exotic objects. Their electrons are in a state of extremely high energy (so called Rydberg states), but when they are shot through another material, they can get rid of this energy in a matter of femtoseconds (millionths of a billionth of a second).
Scientists generally imagine atomic nuclei to be more or less spherical clusters of protons and neutrons, but always relatively chaotic. Experiments at the Argonne National Laboratory, inspired by physicists from the Institute of Nuclear Physics of the Polish Academy of Sciences in Cracow, are trying to verify this simple model. To deploy an astronomical analogy, in as much as the majority of nuclei are similar in outline to rocky objects like moons or asteroids, then the nuclei of lead-208 under certain conditions resemble planets surrounded by a dense atmosphere that can move around a rigid core.
This is the breakthrough we’ve been waiting for.
A new understanding of the physics of conductive materials has been uncovered by scientists observing the unusual movement of electrons in graphene.
“The dream is to have an array of hundreds or thousands of qubits all working together to solve a difficult problem,” said graduate student Joshua Schoenfield. …
A team of scientists has found evidence for a new type of electron pairing that may broaden the search for new high-temperature superconductors. The findings, described in the journal Science, provide the basis for a unifying description of how radically different “parent” materials-insulating copper-based compounds and metallic iron-based compounds-can develop the ability to carry electrical current with no resistance at strikingly high temperatures.
A new finding by physicists at MIT and in Israel shows that under certain specialized conditions, electrons can speed through a narrow opening in a piece of metal more easily than traditional theory says is possible.
An international team of biologists led by Washington State University Professor Haluk Beyenal has discovered a new type of cooperative photosynthesis that could be used in microbial communities for waste treatment and energy production.
The question is more complicated than it seems.
MIT physicists propose that a class of superconducting materials can host Majorana fermions near absolute zero, and that their existence can be verified using nuclear magnetic resonance.
Spintronics, which uses both the electrical and magnetic properties of electrons, has greatly increased the storage capacity of hard drives since the 1990s. Today it opens up new avenues for the future of information technology.
How Messrs Thouless, Haldane and Kosterlitz could hold the key to the future.
Few of us really understand the weird world of quantum physics – but our bodies might take advantage of quantum properties
New findings from an international collaboration led by Canadian scientists may eventually lead to a theory of how superconductivity initiates at the atomic level, a key step in understanding how to harness the potential of materials that could provide lossless energy storage, levitating trains and ultra-fast supercomputers.
Physicists at the University of Southampton have extended the theory of resonance fluorescence, a classic phenomenon in quantum optics, to 2D nanostructures that have novel light emission properties.
Lawrence M. Krauss writes about new research that bolsters the theory of entanglement, a principle of quantum mechanics.
FOR more than 80 years particle physicists have had to think big, even though the things they are paid to think about are the smallest objects that exist. Creating exotic particles means crashing quotidian ones (electrons and protons) into each other. The more exotic the output desired, the faster these collisions must be.
Superconductors and magnetic fields do not usually get along. But a research team led by a Brown University physicist has produced new evidence for an exotic superconducting state, first predicted a half-century ago, that can indeed arise when a superconductor is exposed to a strong magnetic field.
“Neutral currents” could mean lower-power devices
(Phys.org) -How does consciousness work? Few questions if any could be more profound. One thing we do know about it, jokes biophysicist Luca Turin, is that it is soluble in chloroform. When you put the brain into chloroform, the lipids that form nerve cell membranes and the myelin that insulates them will dissolve. On the other hand, when you put chloroform into the brain, by inhaling it, consciousness dissolves. It is hard to imagine a satisfying explanation of consciousness that does not also account for how anesthetics like chloroform can abolish it.
Silicon has become a leading contender in the hunt for a practical, scalable quantum bit
Imagine trying to measure a tennis ball that bounces wildly, every time to a distance a million times its own size. The bouncing obviously creates enormous “background noise” that interferes with the measurement. But if you attach the ball directly to a measuring device, so they bounce together, you can eliminate the noise problem.
A recent study by researchers at the University of Illinois at Urbana-Champaign provides new insights on the physical mechanisms governing the interplay of spin and heat at the nanoscale, and addresses the fundamental limits of ultrafast spintronic devices for data storage and information processing.