An international team of scientists led by physicists from the University of York has paved the way for a new class of magnetic materials and devices with improved performance and power efficiency. Magnetic materials are currently used to ...
Graphene, a single layer of carbon atoms, is an attractive electrode material for supercapacitor applications because of its high surface area. However, how the electrolytes interact with carbon material to store energy is still not well ...
Tags: Graphene Electrode, Electronics, Electrical
In our daily lives we tend to think of electrical conductivity as largely static: Copper is a good choice for conduction; clay is not. But heat up that copper wire, and electron conduction slows. Give a flake of that ceramic a good squeeze, ...
How do you build a universal quantum computer? Turns out, this question was addressed by theoretical physicists about 15 years ago. The answer was laid out in a research paper and has become known as the DiVincenzo criteria. The ...
(Phys.org) —You use crystals everyday: sugar in your coffee, the active ingredient in hand warmers, maybe a diamond stud in your ear. A crystal is built of atoms arranged in a repeat pattern in all three dimensions. X-rays are good ...
Tags: Atomic Displacement, Crystal, NSLS-II, CSC
The strongest scientific evidence for D-Wave's claim to have built commercial quantum computers just got weaker. A new paper finds that classical computing can explain the performance patterns of D-Wave's machines just as well as quantum ...
Tags: D-Wave, IEEE Spectrum's, quantum computer, ETH Zurich
Quantum mechanics offers the potential for creating communication technologies with an inherently higher security level than today's classical technologies. Using quantum digital signatures (QDS), for example, messages can be sent to ...
Tags: Consumer Electronics, Electronics
The faint background glow that exists throughout the Universe, called the Cosmic Microwave Background (CMB), is made of photons that have been scattering since the universe was just 400,000 years old. Now in a new paper, physicist Liang Dai ...
Tags: Consumer Electronics, Electronics
Using electrons more like photons could provide the foundation for a new type of electronic device that would capitalize on the ability of graphene to carry electrons with almost no resistance even at room temperature – a property ...
ESO's New Technology Telescope has been used to find the first evidence that asteroids can have a highly varied internal structure. By making measurements astronomers have found that different parts of the asteroid Itokawa have different ...
Tags: density measurements
(Phys.org)—In 2012,a team of physicists from Germany proposed a scheme for realizing a nanoscale heat engine composed of a single ion.Like a macroscale heat engine,the theoretical nanoscale version can convert heat into mechanical ...
Tags: nanoscale heat engine, nanoscale, quantum heat engines
The world of two-dimensional (2-D) materials has just gotten a little more crowded. If graphene, boron nitride, molybendum disulfide and silicene weren’t quite enough, we now may have something to join the mix in the 2-D universe that ...
Tags: Borophene, Nature Communications, Scotch Tape, B36
As smartphones, tablets and other gadgets become smaller and more sophisticated, the heat they generate while in use increases. This is a growing problem because it can cause the electronics inside the gadgets to fail. Conventional wisdom ...
Tags: smartphones, tablets, Consumer Electronics
Living cells are ready for their close-ups, thanks to a new imaging technique that needs no dyes or other chemicals, yet renders high-resolution, three-dimensional, quantitative imagery of cells and their internal structures – all ...
The brain is a reclusive organ. Neurons the cells that make up the brain, nerves, and spinal cord communicate with each other using electrical pulses known as action potentials, but their interactions are complicated and hard to understand. ...
Tags: Consumer Electronics, Electronics