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Tag: SUPERCONDUCTORS/SEMICONDUCTORS
Pristine quantum criticality found
Study: Quantum fluctuations may give rise to topological phases of matter
A new form of carbon
Not graphene: researchers in Germany and Finland discover new type of atomically thin carbon material
Scientists take a bite out of solar efficiency challenge with sandwich model
The design of next-generation solar panels can now be improved thanks to a greater fundamental understanding of the structure within a key component
Scientists debut most efficient ‘optical rectennas,’ devices that harvest power from heat
Scientists at the University of Colorado Boulder have tapped into a poltergeist-like property of electrons to design devices that can capture excess heat from their environment–and turn it into usable electricity. The researchers have described their new “optical rectennas” in…
Scientists debut most efficient ‘optical rectennas,’ devices that harvest power from heat
Scientists at the University of Colorado Boulder have tapped into a poltergeist-like property of electrons to design devices that can capture excess heat from their environment–and turn it into usable electricity. The researchers have described their new “optical rectennas” in…
‘Bite’ defects revealed in bottom-up graphene nanoribbons
Graphene nanoribbons (GNRs), narrow strips of single-layer graphene, have interesting physical, electrical, thermal, and optical properties because of the interplay between their crystal and electronic structures. These novel characteristics have pushed them to the forefront in the search for ways…
New material could create ‘neurons’ and ‘synapses’ for new computers
Classic computers use binary values (0/1) to perform. By contrast, our brain cells can use more values to operate, making them more energy-efficient than computers. This is why scientists are interested in neuromorphic (brain-like) computing. Physicists from the University of…
New algorithm uses a hologram to control trapped ions
Researchers have discovered the most precise way to control individual ions using holographic optical engineering technology. The new technology uses the first known holographic optical engineering device to control trapped ion qubits. This technology promises to help create more precise…
Closing in on state-of-the-art semiconductor solar cells
A synthetic approach that improves absorber layers in perovskite solar cells could help them achieve their full potential and draw closer to the performance of leading gallium arsenide devices. Solar cells that rely on perovskite thin films to capture sunlight…
A path to graphene topological qubits
Researchers demonstrate that magnetism and superconductivity can coexist in graphene, opening a pathway towards graphene-based topological qubits
Researchers demonstrate fully recyclable printed electronics
New technique reclaims nearly 100% of all-carbon-based transistors while retaining future functionality of the materials
Study could lead to production of more efficient optoelectronic devices
Resonant-tunneling diodes are used in high-frequency oscillators, wave emitters and detectors, logic gates, photodetectors, and optoelectronic circuits. The study was a collaboration between Brazilian and German researchers.
Combining light, superconductors could boost AI capabilities
Optoelectronic integration at low temperatures using superconductors may be easier than at room temperatures using semiconductors.
Thermoelectric material discovery sets stage for new forms of electric power in the future
Clemson physicist joins forces with collaborators from China and Denmark to create hybrid compound
Scientists watch 2D puddles of electrons emerge in a 3D superconducting material
It’s an example of how surprising properties can spontaneously emerge in complex materials — a phenomenon scientists hope to harness for novel technologies
X-ray study recasts role of battery material from cathode to catalyst
Newly clarified reactions point to novel applications for a long-studied lithium-rich battery material
Finnish Quantum Institute announced
InstituteQ will coordinate research, education and innovation across Finland
A new, positive approach could be the key to next-generation, transparent electronics
Filling a crucial gap in the materials spectrum
This hydrogen fuel machine could be the ultimate guide to self-improvement
Study co-led by Berkeley Lab uncovers secret behind humble material’s surprise performance as an artificial photosynthesis device
3D design leads to first stable and strong self-assembling 1D nanographene wires
Nanographene is flexible, yet stronger than steel. With unique physical and electronic properties, the material consists of carbon molecules only one atom thick arranged in a honeycomb shape. Still early in technological development, current fabrication methods require the addition of…
Researchers develop third and final ‘made-to-order’ nanotube synthesis technique
The current method of manufacturing carbon nanotubes–in essence rolled up sheets of graphene–is unable to allow complete control over their diameter, length and type. This problem has recently been solved for two of the three different types of nanotubes, but…
A new technique to synthesize superconducting materials
University of Rochester researchers reduce the pressure required by separating hydrogen atoms from yttrium with a thin film of palladium
Breaking records like baking bread
Alloying, the process of mixing metals in different ratios, has been a known method for creating materials with enhanced properties for thousands of years, ever since copper and tin were combined to form the much harder bronze. Despite its age,…
Sussex scientists develop ultra-thin terahertz source
Physicists from the University of Sussex have developed an extremely thin, large-area semiconductor surface source of terahertz, composed of just a few atomic layers and compatible with existing electronic platforms. Terahertz sources emit brief light pulses oscillating at ‘trillion of…
Deciphering the secrets of printed electronics
We live in a world where we want our electronics to be flexible, bendable and stretchable apart from being intelligent. Printed electronics technology has emerged as the main route to enable this vision.
Standing out: Unusual magnetic transition in perovskite oxide can help boost spintronics
Transition metal perovskites oxides exhibit several desirable properties, including high-temperature superconductivity and electrocatalysis. Now, scientists at Tokyo Institute of Technology explore the structure and properties of a perovskite oxide, PbFeO3, in anticipation of the unusual charge distribution and exotic magnetic…
Renewable energy, new perspectives for photovoltaic cells
In a study published in Nature Communications, scientists from the Politecnico di Milano and IFN-CNR reveal a critical mechanism for organic photovoltaic cell efficiency
New nanotransistors keep their cool at high voltages
Power converters are the little-known systems that make electricity so magical. They are what allow us to plug in our computers, lamps and televisions and turn them on in a snap. Converters transform the alternating current (AC) that comes out…
Optical fiber could boost power of superconducting quantum computers
The secret to building superconducting quantum computers with massive processing power may be an ordinary telecommunications technology – optical fiber. Physicists at the National Institute of Standards and Technology (NIST) have measured and controlled a superconducting quantum bit (qubit) using…
Novel thermometer can accelerate quantum computer development
Researchers at Chalmers University of Technology, Gothenburg, Sweden, have developed a novel type of thermometer that can simply and quickly measure temperatures during quantum calculations with extremely high accuracy.
Virtual lab finds the right AI tool for each chemistry problem
Having the right tool for the job makes the job a lot easier, less expensive and faster. Chemical engineering researchers have now developed a virtual laboratory that can be used to determine the artificial intelligence (AI) tools best suited for…
Focusing on the unhealthy brain to speed drug discovery
University of Houston collaboration with National Institutes of Health delivers toolkit to accelerate process
Pretty gameful!
DFG funds mobile game on quantum physics with 100.000 euros
Size matters when it comes to atomic properties
A study from Chalmers University of Technology, Sweden, has yielded new answers to fundamental questions about the relationship between the size of an atom and its other properties, such as electronegativity and energy. The results pave the way for advances…
Scientists take step towards quantum supremacy
A Russian-German research team has created a quantum sensor that grants access to measurement and manipulation of individual two-level defects in qubits. The study by NUST MISIS, Russian Quantum Center and the Karlsruhe Institute of Technology, published in npj Quantum…
Understanding how electrons ‘dance’ in topological semimetals
UH physicist earns NSF CAREER Award to investigate materials’ fundamental aspects
https://discovery.kaust.edu.sa/en/article/1098/the-right-ring-count-to-harness-waste-heat
Electronic organic materials offer promise to support alternative and green energy sources to meet escalating global energy demands and strict environmental regulations. A KAUST-led team has now developed electron-transporting, so-called n-type, organic semiconductors that could help generate electricity from waste…
Magnetism meets topology on a superconductor’s surface
This unusual electronic energy structure could be harnessed for technologies of interest in quantum information science and electronics
A promising breakthrough for a better design of electronic materials
A deeper understanding of molecular vibrations can increase electron velocity in semiconductor materials
Spontaneous superconducting currents in Sr2RuO4
Superconductivity is a complete loss of electrical resistance. Superconductors are not merely very good metals: it is a fundamentally different electronic state. In normal metals, electrons move individually, and they collide with defects and vibrations in the lattice. In superconductors,…
Keeping it cool: New approach to thermal protection in outdoor wearable electronics
Scientists develop a radiative cooler that keeps wearable devices cool even under direct sunlight
Distinguished Lehigh researcher Zakya Kafafi elected to National Academy of Engineering
Kafafi’s ‘contributions to materials technologies for organic optoelectronics’ recognized with one of the highest honors given to engineers in the United States
Sweden’s quantum computer project shifts up a gear
Knut and Alice Wallenberg Foundation is almost doubling the annual budget of the research initiative Wallenberg Centre for Quantum Technology, based at Chalmers University of Technology, Sweden.
Dean Sam H. Noh named 2020 ACM fellow
Sam H. Noh, Professor of Electrical and Computer Engineering and Dean of the Graduate School of Artificial Intelligence at UNIST, has been elected as a 2020 fellow of the Association for Computing Machinery (ACM), the world’s largest scientific and educational…
New perovskite LED emits a circularly polarized glow
Light-emitting diodes (LEDs) have revolutionized the displays industry. LEDs use electric current to produce visible light without the excess heat found in traditional light bulbs, a glow called electroluminescence. This breakthrough led to the eye-popping, high-definition viewing experience we’ve come…
Use of perovskite will be a key feature of the next generation of electronic appliances
Nanomaterials of perovskite dispersed in hexane and irradiated by laser; light emission by these materials is intense thanks to resistance to surface defects
Contactless high performance power transmission
Superconducting coils for contactless power transmission in the kilowatt range
Scientists have synthesized a new high-temperature superconductor
An international team led by Artem R. Oganov, a Professor at Skoltech and MISIS, and Dr. Ivan Troyan from the Institute of Crystallography of RAS performed theoretical and experimental research on a new high-temperature superconductor, yttrium hydride (YH6). Their findings…
Producing highly efficient LEDs based on 2D perovskite films
Energy-efficient light-emitting diodes (LEDs) have been used in our everyday life for many decades. But the quest for better LEDs, offering both lower costs and brighter colours, has recently drawn scientists to a material called perovskite. A recent joint-research project…