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Physics - Electroengineering - 22.09.2022
Ultracold circuits
Ultracold circuits
Cooling materials to extremely low temperatures is important for basic physics research as well as for technological applications. By improving a special refrigerator and a low-temperature thermometer, Basel scientists have now managed to cool an electric circuit on a chip down to 220 microkelvin - close to absolute zero.

Electroengineering - Materials Science - 30.08.2022
Green electronics made from wood
Green electronics made from wood
Sustainable electronic components can be made from wood with the help of a novel process that uses a laser to engrave electrically conductive structures on veneers. A research team at Empa and at ETH's Institute for Building Materials has developed a practical and versatile method for making wooden surfaces electrically conductive.

Physics - Electroengineering - 17.06.2022
Boosting light power revolutionizes communications and autopilot
Boosting light power revolutionizes communications and autopilot
Scientists have built a compact waveguide amplifier by successfully incorporating rare-earth ions into integrated photonic circuits. The device produces record output power compared to commercial fiber amplifiers, a first in the development of integrated photonics over the last decades. Erbium-doped fiber amplifiers (EDFAs) are devices that can provide gain to the optical signal power in optical fibers, often used in long-distance communication fiber optic cables and fiber-based lasers.

Materials Science - Electroengineering - 14.03.2022
Scientists create new lead-free piezoelectric materials
Scientists create new lead-free piezoelectric materials
Researchers have discovered that gadolinium-doped cerium oxide, a compound they created in the lab, could be a promising alternative to certain piezoelectric materials: it has the same proprieties yet may be 100 times more effective. It's also lead-free, unlike the best piezoelectric materials, which means that it could be employed in bio-compatible medical applications.

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 - 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.

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.

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.

Electroengineering - Physics - 26.03.2021
New nanotransistors keep their cool at high voltages
New nanotransistors keep their cool at high voltages
Power converters play an essential role in electric vehicles and solar panels, for example, but tend to lose a lot of power in the form of heat in the electricity conversion process. Thanks to a new type of transistor developed at EPFL, these converters can perform at substantially improved efficiencies, especially in high-power applications.

Physics - Electroengineering - 18.03.2021
Nano-mapping phase transitions in electronic materials
Nano-mapping phase transitions in electronic materials
Scientists at EPFL and the University of Geneva have combined two powerful, cutting-edge techniques to uncover the physics behind an exotic phase transition that turns a metal into an insulator. The materials they looked at are rare-earth nickelates, which are of great interest for innovating new approaches in electronics.

Physics - Electroengineering - 09.03.2021
Nano-mapping phase transitions in electronic materials
Nano-mapping phase transitions in electronic materials
Scientists at EPFL and the University of Geneva have combined two powerful, cutting-edge techniques to uncover the physics behind an exotic phase transition that turns a metal into an insulator. The materials they looked at are rare-earth nickelates, which are of great interest for innovating new approaches in electronics.

Physics - Electroengineering - 15.02.2021
Kagome graphene promises exciting properties
Kagome graphene promises exciting properties
For the first time, physicists from the University of Basel have produced a graphene compound consisting of carbon atoms and a small number of nitrogen atoms in a regular grid of hexagons and triangles. This honeycomb-structured -kagome lattice- behaves as a semiconductor and may also have unusual electrical properties.

Physics - Electroengineering - 11.01.2021
Electrically switchable qubit can tune between storage and fast calculation modes
Electrically switchable qubit can tune between storage and fast calculation modes
To perform calculations, quantum computers need qubits to act as elementary building blocks that process and store information. Now, physicists have produced a new type of qubit that can be switched from a stable idle mode to a fast calculation mode. The concept would also allow a large number of qubits to be combined into a powerful quantum computer, as researchers from the University of Basel and TU Eindhoven have reported in the journal -Nature Nanotechnology-.

Physics - Electroengineering - 09.11.2020
A new candidate material for Quantum Spin Liquids
A new candidate material for Quantum Spin Liquids
Using a unique material, EPFL scientists have been able to design and study an unusual state of matter, the Quantum Spin Liquid. The work has significant implications for future technologies, from quantum computing to superconductivity and spintronics. In 1973, physicist and later Nobel laureate Philip W. Anderson proposed a bizarre state of matter: the quantum spin liquid (QSL).

Electroengineering - Life Sciences - 24.09.2020
Microelectronics shed light on neural behaviour
Microelectronics shed light on neural behaviour
Researchers at ETH Zurich - in collaboration with colleagues from EPFL in Lausanne and Harvard Medical School - have developed a system that allows them to optically stimulate individual nerve fibres in living mice. Through this process, they have demonstrated that the nervous system has a direct influence on the immune system.

Physics - Electroengineering - 22.09.2020
Customising an electronic material
Customising an electronic material
Scientists have gained a fundamental understanding of a highly promising material that could be suited to future data storage applications. Their experiments with strontium-iridium oxide, Sr2IrO 4 , investigated both the magnetic and electronic properties of the material as a thin film. They also analysed how these properties can be systematically controlled by manipulating the films.

Electroengineering - Environment - 10.09.2020
Transistor-integrated cooling for a more powerful chip
Transistor-integrated cooling for a more powerful chip
Researchers have created a single chip that combines a transistor and micro-fluidic cooling system. Managing the heat generated in electronics is a huge problem, especially with the constant push to reduce the size and pack as many transistors as possible in the same chip. The whole problem is how to manage such high heat fluxes efficiently.

Physics - Electroengineering - 07.09.2020
A tiny instrument to measure the faintest magnetic fields
A tiny instrument to measure the faintest magnetic fields
Physicists at the University of Basel have developed a minuscule instrument able to detect extremely faint magnetic fields. At the heart of the superconducting quantum interference device are two atomically thin layers of graphene, which the researchers combined with boron nitride. Instruments like this one have applications in areas such as medicine, besides being used to research new materials.

Physics - Electroengineering - 07.09.2020
Reconfiguring microwave photonic filters without an external device
Reconfiguring microwave photonic filters without an external device
Researchers from EPFL's Photonics Systems Lab have come up with a way of reconfiguring microwave photonic filters without the need for an external device. This paves the way for more compact, environmentally friendly filters that will be more practical and cheaper to use. Potential applications include detection and communications systems.

Physics - Electroengineering - 18.08.2020
Artificial materials for more efficient electronics
Artificial materials for more efficient electronics
The discovery of an unprecedented physical effect in a new artificial material marks a significant milestone in the lengthy process of developing "made-to-order" materials and more energy-efficient electronics. We are surrounded by electronic devices. Transistors are used to power telephones, computers, televisions, hi-fi systems and game consoles as well as cars, airplanes and the like.
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