|Filed Under:||Academics / Physics|
|Posts on Regator:||1854|
|Posts / Week:||34.2|
|Archived Since:||September 5, 2016|
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a phenomenon similar to an effect observed in circular galleries, such as in some...Show More Summary
Devices that allow to route microwave signals are essential engineering tools. In particular, isolators, which let signals flow in one direction but block them in the other, are needed to protect sensitive equipment from harm. Now, scientists...Show More Summary
Fluorescence microscopy gives researchers incredible power to illuminate the tiniest structures and capture the real-time activities of live cells by tagging biological molecules with a veritable rainbow of fluorescent dyes. This power comes at a cost: The technology can be expensive and time-consuming and, so far, has resisted attempts at automation.
The beautiful sound of birdsongs emerging from the trees is a wonderful example of how much nature can still teach us, even as much about their origins are still mysterious to us. About 40 percent of bird species learn to vocalize when they are exposed to a tutor, a behavior of interest to many neurologists and neurobiologists. Show More Summary
Canadian and US researchers have taken an important step towards enabling quantum networks to be cost-effective and truly secure from attack.
Light travels fast – sometimes a little too fast when it comes to data processing.
Researchers from the Moscow Institute of Physics and Technology and the University of Siegen have explained the mechanism of single-photon generation in diamond diodes. Their findings, published in Physical Review Applied, offer new avenues for the development of high-speed single-photon sources for quantum communication networks and quantum computers of the future.
Today, electrical bistable devices are the foundation of digital electronics, serving as building blocks of switches, logic gates and memories in computer systems. However, the bandwidth of these electronic computers is limited by the signal delay of time constants important to electronic logic operations. Show More Summary
Thermoelectric materials are considered a key resource for the future - able to produce electricity from sources of heat that would otherwise go to waste, from power plants, vehicle tailpipes and elsewhere, without generating additional greenhouse gases. Show More Summary
Two-dimensional materials called molecular aggregates are very effective light emitters that work on a different principle than typical organic light-emitting diodes (OLEDs) or quantum dots. But their potential as components for new kinds of optoelectronic devices has been limited by their relatively slow response time. Show More Summary
When investigating atoms, scientists face a challenge: At room temperature, individual atoms in a gas have kinetic energy, and fly around at large velocities. Temperature is, in essence, the relative movement between atoms; thus the goal of getting the atoms to have small relative velocities involves freezing them to extremely cold temperatures. Show More Summary
Decades ago, the Moore's law predicted that the number of transistors in a dense integrated circuit doubles approximately every two years. This prediction was proved to be right in the past few decades, and the quest for ever smaller and more efficient semiconductor devices have been a driving force in breakthroughs in the technology.
(Phys.org)—Physicists have demonstrated a new mode of electromagnetic wave called a "line wave," which travels along an infinitely thin line along the interface between two adjacent surfaces with different electromagnetic properties....Show More Summary
The 2016 Nobel Prize in Physics celebrated the rich behaviour of two-dimensional (2-D) materials, like atoms, molecules, or electrons that are confined to move on a flat surface.
A new microscope can capture 3-D images of live organisms in real time. It's called the QIs-scope, an innovation from a spinoff of Universidad Carlos III de Madrid (UC3M), 4D Nature. The microscope can be used in biomedical research or to improve clinical diagnosis procedures.
Particles emerging from even the lowest energy collisions of small deuterons with large heavy nuclei at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy Office of Science User Facility for nuclear physics research...Show More Summary
Ames Laboratory scientists have found new insight to the "rules" of how magnetic states emerge and are suppressed, creating a guide for discovery of other materials with superconducting capabilities. The discovery was made through the study of the transition metal compound LaCrGe3 under temperature, pressure, and magnetic field changes.
The rise of big data and advances in information technology has serious implications for our ability to deliver sufficient bandwidth to meet the growing demand.
Photonics is a rapidly growing field in which some of the most sci-fi ideas of the not-so-distant past, are taking form. Now EU-funded research is bringing the notion of an invisibility cloak closer by using microscopic structures that can bend light.
Researchers at the University of Sydney have dramatically slowed digital information carried as light waves by transferring the data into sound waves in an integrated circuit, or microchip.