Results 61 - 80 of 680.

Physics - Electroengineering - 20.01.2022
Quantum tech: Semiconductor 'flipped' to insulator above room temp
Quantum tech: Semiconductor ’flipped’ to insulator above room temp
A semiconducting material that performed a quantum "flip” from a conductor to an insulator above room temperature has been developed at the University of Michigan. It potentially brings the world closer to a new generation of quantum devices and ultra-efficient electronics. Observed in two-dimensional layers of tantalum sulfide only a single atom thick, the exotic electronic structure that supported this quantum flip was previously only stable at ultra-cold temperatures of -100 degrees Fahrenheit.

Physics - Electroengineering - 30.11.2021
Quantum physics across dimensions: Unidirectional Kondo Scattering
Quantum physics across dimensions: Unidirectional Kondo Scattering
An international team led by scientists, has unveiled a unique quantum-mechanical interaction between electrons and topological defects in layered materials that has only been observed in engineered atomic thin layers. The phenomenon can be reproduced by the native defects of lab grown large crystals, making future investigation of Kondo systems and quantum electronic devices more accessible.

Physics - Electroengineering - 08.11.2021
Doppler effect and sonic boom in graphene devices opens new direction in quantum electronics research
A team including researchers from The University of Manchester's National Graphene Institute (NGI) has revealed that sonic boom and Doppler-shifted sound waves can be created in a graphene transistor, giving new insights into this advanced material and its potential for use in nanoscale electronic technologies.

Physics - Electroengineering - 13.10.2021
How to force photons to never bounce back
How to force photons to never bounce back
Scientists have developed a topology-based method that forces microwave photons to travel along a one way path, despite unprecedented levels of disorder and obstacles on their way. This discovery paves the way to a new generation of high-frequency circuits and extremely robust, compact communication devices.

Materials Science - Electroengineering - 28.09.2021
Scientists create material that can both move and block heat
Unusual material could improve the reliability of electronics and other devices Moving heat around where you want it to go-adding it to houses and hairdryers, removing it from car engines and refrigerators-is one of the great challenges of engineering. All activity generates heat, because energy escapes from everything we do.

Physics - Electroengineering - 01.09.2021
Rice physicists find ’magnon’ origins in 2D magnet
Topological feature could prove useful for encoding information in electron spins Rice physicists have confirmed the topological origins of magnons, magnetic features they discovered three years ago in a 2D material that could prove useful for encoding information in the spins of electrons. Rice University graduate student Lebing Chen used a high-temperature furnace to make chromium triiodide crystals that yielded the 2D materials for experiments at Oak Ridge National Laboratory's Spallation Neutron Source.

Electroengineering - Economics - 30.08.2021
New Report Shows Technology Advancement and Value of Wind Energy
New Report Shows Technology Advancement and Value of Wind Energy
Berkeley Lab research finds that societal value of wind is far in excess of costs Wind energy continues to see strong growth, solid performance, and low prices in the U.S., according to a report released by the U.S. Department of Energy (DOE) and prepared by Lawrence Berkeley National Laboratory ▄Berkeley Lab).

Electroengineering - Health - 30.08.2021
'Charging room' system powers lights, phones, laptops without wires
’Charging room’ system powers lights, phones, laptops without wires
In a move that could one day free the world's countertops from their snarl of charging cords, researchers at the University of Michigan and University of Tokyo have developed a system to safely deliver electricity over the air, potentially turning entire buildings into wireless charging zones. Detailed in a new study published in Nature Electronics, the technology can deliver 50 watts of power using magnetic fields.

Materials Science - Electroengineering - 17.08.2021
Perovskite: the material that allows a greener fabrication of transistors
Perovskite: the material that allows a greener fabrication of transistors
Physicists find a way to make components for low-cost electronics using a material that's highly rated for its performance in next-gen solar cells and LEDs. Last updated on Tuesday 17 August 2021 Physicists have found a way to make transistors using materials that are highly rated for their performance in next-generation solar cells and light-emitting diodes (LEDs).

Chemistry - Electroengineering - 10.08.2021
New strategy for developing human-integrated electronics
Polymer semiconductors - materials that have been made soft and stretchy but still able to conduct electricity - hold promise for future electronics that can be integrated within the body, including disease detectors and health monitors. Yet until now, scientists and engineers have been unable to give these polymers certain advanced features, like the ability to sense biochemicals, without disrupting their functionality altogether.

Physics - Electroengineering - 09.08.2021
Qubits Under Pressure
Qubits Under Pressure
A new type of atomic sensor made of boron nitride is presented by researchers in "Nature Communications". The sensor is based on a qubit in the crystal lattice and is superior to comparable sensors. An artificially created spin defect (qubit) in a crystal lattice of boron nitride is suitable as a sensor enabling the measurement of different changes in its local environment.

Electroengineering - 21.07.2021
How Managing Building Energy Demand Can Aid the Clean Energy Transition
New Berkeley Lab study finds that more energy efficient and flexible buildings could be a substantial resource for the electric grid Since buildings consume 75% of electricity in the U.S., they offer great potential for saving energy and reducing the demands on our rapidly changing electric grid. But how much, where, and through which strategies could better management of building energy use actually impact the electricity system?

Physics - Electroengineering - 13.07.2021
Opening the gates to the next generation of information processing
New technology paves the way for improved information transfer in emerging 'magnonics' field Many of us swing through gates every day-points of entry and exit to a space like a garden, park or subway. Electronics have gates too. These control the flow of information from one place to another by means of an electrical signal.

Electroengineering - Physics - 29.06.2021
Stretching changes the electronic properties of graphene
Stretching changes the electronic properties of graphene
The electronic properties of graphene can be specifically modified by stretching the material evenly, say researchers at the University of Basel. These results open the door to the development of new types of electronic components. Graphene consists of a single layer of carbon atoms arranged in a hexagonal lattice.

Environment - Electroengineering - 15.06.2021
One Thing Leads to Another
Carnegie Mellon University Novel methods for making ceramics could abate environmental problems Last year, as the pandemic roiled through academia, B. Reeja Jayan quietly contemplated how to manufacture new ceramic materials that could mitigate environmental problems. Jayan is an associate mechanical engineering professor at Carnegie Mellon University, and her novel approaches to ceramics research has made her contemporaries take note.

Physics - Electroengineering - 04.06.2021
Magnetism Drives Metals to Insulators in New Experiment
Like all metals, silver, copper, and gold are conductors. Electrons flow across them, carrying heat and electricity. While gold is a good conductor under any conditions, some materials have the property of behaving like metal conductors only if temperatures are high enough; at low temperatures, they act like insulators and do not do a good job of carrying electricity.

Physics - Electroengineering - 27.05.2021
Thin, Large-Area Device Converts Infrared Light into Images
Seeing through smog and fog. Mapping out a person's blood vessels while monitoring heart rate at the same time—without touching the person's skin. Seeing through silicon wafers to inspect the quality and composition of electronic boards. These are just some of the capabilities of a new infrared imager developed by a team of researchers led by electrical engineers at the University of California San Diego.

Physics - Electroengineering - 25.05.2021
'Bite' defects in bottom-up graphene nanoribbons
’Bite’ defects in bottom-up graphene nanoribbons
Scientists at Empa and EPFL have identified a new type of defect as the most common source of disorder in on-surface synthesized graphene nanoribbons, a novel class of carbon-based materials that may prove extremely useful in next-generation electronic devices. The researchers identified the atomic structure of these so-called "bite" defects and investigated their effect on quantum electronic transport.

Chemistry - Electroengineering - 20.05.2021
New system to control electronic states of bidimensional organic materials
A collaborative theoretical study involving three groups from the Institute of Theoretical and Computational Chemistry of the University dofe Barcelona (IQTCUB), published , shows how to reversibly switch between electronic states in organic materials. The paper was also featured as an Editor's Highlight and as a Behind the paper article signed by Stefan Bromley, ICREA Research Professor at IQTCUB and principal researcher in this study.

Electroengineering - 11.05.2021
Computer designs magnonic devices
Computer designs magnonic devices
Magnonic devices have the potential to revolutionize the electronics industry. Qi Wang, Andrii Chumak from University of Vienna and Philipp Pirro from TU Kaiserslautern have largely accelerated the design of more versatile magnonic devices via a feedback-based computational algorithm. Their "inverse-design" of magnonic devices has now been published.