Light meets superconductivity.
Researchers at Ecole Polytechnique Fédérale de Lausanne have developed a novel approach using light to read data from low temperature superconducting devices. Using light avoids the problems caused by heat transfer through conventional cables.
The work is published in the journal Nature Electronics: https://www.nature.com/articles/s41928-021-00570-4
#sciencenews #supercondactivity #light #physics
Researchers at Ecole Polytechnique Fédérale de Lausanne have developed a novel approach using light to read data from low temperature superconducting devices. Using light avoids the problems caused by heat transfer through conventional cables.
The work is published in the journal Nature Electronics: https://www.nature.com/articles/s41928-021-00570-4
#sciencenews #supercondactivity #light #physics
Nature
A cryogenic electro-optic interconnect for superconducting devices
Nature Electronics - A commercial titanium-doped lithium niobate phase modulator can be employed at temperatures as low as 800 mK for the electro-optical readout of a superconducting...
Cold solar cells.
The economic value of solar panels depends upon their lifespan and power conversion efficiency. University of New South Wales researchers have developed new and improved solar panels that improve the device lifetime by operating at lower temperatures.
Their results are reported in Progress in Photovoltaics: Research and Applications: https://onlinelibrary.wiley.com/doi/10.1002/pip.3405
#sciencenews #physics #solarenergy #energy
The economic value of solar panels depends upon their lifespan and power conversion efficiency. University of New South Wales researchers have developed new and improved solar panels that improve the device lifetime by operating at lower temperatures.
Their results are reported in Progress in Photovoltaics: Research and Applications: https://onlinelibrary.wiley.com/doi/10.1002/pip.3405
#sciencenews #physics #solarenergy #energy
Wiley Online Library
Singlet fission and tandem solar cells reduce thermal degradation and enhance lifespan
The operating temperature of PV modules affects the rate of degradation. We show the extent to which module operating temperature can be reduced by increasing the efficiency of the PV module via a ta...
The future of LED displays?
Small and efficient micro-LEDs are a promising technology for the next generation of displays. A new red light micro-LED developed at KAUST promises to boost the future of full-colour displays based on just a single semiconductor.
Details of their device can be found in Optics Letters: https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-46-8-1912&id=450025
#sciencenews #physics #light #optics
Small and efficient micro-LEDs are a promising technology for the next generation of displays. A new red light micro-LED developed at KAUST promises to boost the future of full-colour displays based on just a single semiconductor.
Details of their device can be found in Optics Letters: https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-46-8-1912&id=450025
#sciencenews #physics #light #optics
www.osapublishing.org
Investigation of InGaN-based red/green micro-light-emitting diodes
We investigated the performance of InGaN-based red/green micro-light-emitting diodes (µLEDs) ranging from 98×98µm2 to 17×17µm2. The average forward voltage at 10A/cm2 was independent of the dimension of µLEDs. Red µLEDs exhibited a larger blueshift of the…
Improving optical fiberss.
Distortions in the signals passed through optical fibers are a massive challenge for modern communications infrastructure. University of Rochester researchers have devised a novel technique where pre-shaping the wave front and polarization of the optical signal reduces distortions during transmission.
The results can be viewed in Nature Communications: https://www.nature.com/articles/s41467-021-22071-w
#sciencenews #optics #physics #smartmaterials
Distortions in the signals passed through optical fibers are a massive challenge for modern communications infrastructure. University of Rochester researchers have devised a novel technique where pre-shaping the wave front and polarization of the optical signal reduces distortions during transmission.
The results can be viewed in Nature Communications: https://www.nature.com/articles/s41467-021-22071-w
#sciencenews #optics #physics #smartmaterials
Nature
High-fidelity spatial mode transmission through a 1-km-long multimode fiber via vectorial time reversal
Nature Communications - The use of long multimode fibers for multiplexed quantum communication is hindered by modal crosstalk and polarisation mixing. Here, the authors use an auxiliary laser beam...
Liquid light.
Researchers at St. Petersburg State University have experimentally observed the formation of a Bose-Einstein condensate in molybdenum diselenide. The condensate contains thousands of exciton polaritons, or ‘liquid light’ quanta, which can be used to carry information in quantum computing applications.
The work has recently been published in Nature Materials: https://www.nature.com/articles/s41563-021-01000-8
#sciencenews #physics #light #Quantum
Researchers at St. Petersburg State University have experimentally observed the formation of a Bose-Einstein condensate in molybdenum diselenide. The condensate contains thousands of exciton polaritons, or ‘liquid light’ quanta, which can be used to carry information in quantum computing applications.
The work has recently been published in Nature Materials: https://www.nature.com/articles/s41563-021-01000-8
#sciencenews #physics #light #Quantum
Nature
Bosonic condensation of exciton–polaritons in an atomically thin crystal
Nature Materials - A coherent condensate of exciton–polaritons, extending spatially up to 4 µm and spin-polarizable with an external magnetic field, is observed at cryogenic...
Writing with graphene.
A Rice University laboratory can fabricate high resolution conductive patterns at the micron-scale using a laser-induced graphene synthesis process. The graphene patterns can be formed on surfaces including wood, paper, and even food.
Their work has been published in ACS Nano: https://pubs.acs.org/doi/10.1021/acsnano.1c01843
#sciencenews #graphene #physics
A Rice University laboratory can fabricate high resolution conductive patterns at the micron-scale using a laser-induced graphene synthesis process. The graphene patterns can be formed on surfaces including wood, paper, and even food.
Their work has been published in ACS Nano: https://pubs.acs.org/doi/10.1021/acsnano.1c01843
#sciencenews #graphene #physics
ACS Publications
High-Resolution Laser-Induced Graphene from Photoresist
The fabrication of patterned graphene electronics at high resolution is an important challenge for many applications in microelectronics. Here, we demonstrate the conversion of positive photoresist (PR), commonly employed in the commercial manufacture of…
A new spintronic phenomenon.
Researchers at Tohoku University have discovered a new spintronic phenomenon in the form of a persistent rotation of the chiral spin structure. They studied the properties of an antiferromagnetic thin film and found that the chiral spin structure shows rotation even with no applied magnetic field.
The phenomenon is described in Nature Materials: http://dx.doi.org/10.1038/s41563-021-01005-3
#sciencenews #physics
Researchers at Tohoku University have discovered a new spintronic phenomenon in the form of a persistent rotation of the chiral spin structure. They studied the properties of an antiferromagnetic thin film and found that the chiral spin structure shows rotation even with no applied magnetic field.
The phenomenon is described in Nature Materials: http://dx.doi.org/10.1038/s41563-021-01005-3
#sciencenews #physics
Nature
Chiral-spin rotation of non-collinear antiferromagnet by spin–orbit torque
Nature Materials - Current-induced rotation in epitaxial films of the non-collinear antiferromagnet Mn3Sn is investigated.
Controlled ionisation.
Ionization energy is one of the most important physicochemical parameters. Kazan Federal University physicists have described how the ionisation energy of atoms contained in photonic crystals can be tuned, allowing the synthesis of new compounds to be accessed.
The work has recently been published in Physics Letters A: https://www.sciencedirect.com/science/article/abs/pii/S0375960121002711?via%3Dihub
#sciencenews #physics #science
Ionization energy is one of the most important physicochemical parameters. Kazan Federal University physicists have described how the ionisation energy of atoms contained in photonic crystals can be tuned, allowing the synthesis of new compounds to be accessed.
The work has recently been published in Physics Letters A: https://www.sciencedirect.com/science/article/abs/pii/S0375960121002711?via%3Dihub
#sciencenews #physics #science
Sciencedirect
Quantum electrodynamics in photonic crystals and controllability of ionization energy of atoms
The periodic changes in the physical and chemical properties of the chemical elements are caused by the periodic change of the ionization energies, wh…
Light out of thin air.
Most commercial chemicals require catalysts to produce, which normally take the form of metal nanoparticles. A team at Vienna University of Technology have shown how the atomic scale surface structures of such catalysts can critically influence their reactive properties. They visualise the oxidation of hydrogen on a single rhodium nanoparticle in real time.
Their insights are published in Science: https://science.sciencemag.org/content/early/2021/05/19/science.abf8107
#sciencenews #nano #physics
Most commercial chemicals require catalysts to produce, which normally take the form of metal nanoparticles. A team at Vienna University of Technology have shown how the atomic scale surface structures of such catalysts can critically influence their reactive properties. They visualise the oxidation of hydrogen on a single rhodium nanoparticle in real time.
Their insights are published in Science: https://science.sciencemag.org/content/early/2021/05/19/science.abf8107
#sciencenews #nano #physics
Science
Resolving multifrequential oscillations and nanoscale interfacet communication in single-particle catalysis
In heterogeneous catalysis research, the reactivity of the individual nanofacets of single particle is typically not resolved. We applied in situ field electron microscopy (FEM) to the apex of a curved rhodium crystal (radius of 650 nanometers), providing…
Kirigami cameras.
University of Houston researchers have developed a kirigami-inspired camera with a curvy, adaptable imaging sensor that could improve image quality in endoscopes, night-vision goggles, artificial compound eyes and fish-eye cameras.
Learn about their system in Nature Electronics: https://www.nature.com/articles/s41928-021-00600-1
#sciencenews #sensors #physics #optics
University of Houston researchers have developed a kirigami-inspired camera with a curvy, adaptable imaging sensor that could improve image quality in endoscopes, night-vision goggles, artificial compound eyes and fish-eye cameras.
Learn about their system in Nature Electronics: https://www.nature.com/articles/s41928-021-00600-1
#sciencenews #sensors #physics #optics
Nature Electronics
Curvy, shape-adaptive imagers based on printed optoelectronic pixels with a kirigami design
Curvy and shape-adaptive imagers with high pixel fill factors and tunable focusing power can be created by transferring an array of ultrathin silicon optoelectronic pixels with a kirigami design...
Nanoscale thermoplasmonics.
Research from Kazan Federal University demonstrates a new approach using plasmon-assisted optical heating to determine the glass transition temperature in polymers. The optical heating is controllable by adjusting the substrate conformation to probe the temperature in a broad range.
Their results are available in ACS Photonics: https://pubs.acs.org/doi/10.1021/acsphotonics.1c00256
#sciencenews #physics #photonics
Research from Kazan Federal University demonstrates a new approach using plasmon-assisted optical heating to determine the glass transition temperature in polymers. The optical heating is controllable by adjusting the substrate conformation to probe the temperature in a broad range.
Their results are available in ACS Photonics: https://pubs.acs.org/doi/10.1021/acsphotonics.1c00256
#sciencenews #physics #photonics
ACS Publications
Nanoscale Sensing Vitrification of 3D Confined Glassy Polymers Through Refractory Thermoplasmonics
Advances in plasmonics have been fundamentally rooted in minimizing ohmic losses in metallic nanostructures. However, the losses at resonance can play a positive role; for instance, in optical heating, there are two sides to every story. Under laser illumination…
Topological fingerprints.
Scientists at the UNSW have made a breakthrough in the search for the topological magnetic monopole referred to as the Berry curvature. They identified an unconventional Hall effect, driven by an in-plane magnetic field in semiconductor hole systems, stemming from the Berry curvature.
Their insights are published in Physical Review Letters: http://dx.doi.org/10.1103/PhysRevLett.126.256601
#sciencenews #physics
Scientists at the UNSW have made a breakthrough in the search for the topological magnetic monopole referred to as the Berry curvature. They identified an unconventional Hall effect, driven by an in-plane magnetic field in semiconductor hole systems, stemming from the Berry curvature.
Their insights are published in Physical Review Letters: http://dx.doi.org/10.1103/PhysRevLett.126.256601
#sciencenews #physics
Physical Review Letters
Generating a Topological Anomalous Hall Effect in a Nonmagnetic Conductor: An In-Plane Magnetic Field as a Direct Probe of the…
We demonstrate that the Berry curvature monopole of nonmagnetic two-dimensional spin-$3/2$ holes leads to a novel Hall effect linear in an applied in-plane magnetic field ${B}_{\ensuremath{\parallel}}$. Remarkably, all scalar and spin-dependent disorder contributions…
New high-temperature semiconductors.
Skoltech researchers have investigated the properties of novel lanthanum and yttrium ternary hydrides. By alloying the two metals they increased both the stability and the critical temperature for superconductivity.
The properties of the alloys are described in the journal Materials Today: https://www.sciencedirect.com/science/article/abs/pii/S1369702121001309?via%3Dihub
#sciencenews #physics
Skoltech researchers have investigated the properties of novel lanthanum and yttrium ternary hydrides. By alloying the two metals they increased both the stability and the critical temperature for superconductivity.
The properties of the alloys are described in the journal Materials Today: https://www.sciencedirect.com/science/article/abs/pii/S1369702121001309?via%3Dihub
#sciencenews #physics
Integrated frequency combs.
Research from Ecole Polytechnique Fédérale de Lausanne has shown how entire optical frequency comb systems can be integrated in a silicon-based platform. Their process is compatible with standard foundry fabrication methods, allowing its scalable implementation to optical communications devices.
Their method is detailed in Science: https://science.sciencemag.org/content/373/6550/99.abstract
#sciencenews #physics
Research from Ecole Polytechnique Fédérale de Lausanne has shown how entire optical frequency comb systems can be integrated in a silicon-based platform. Their process is compatible with standard foundry fabrication methods, allowing its scalable implementation to optical communications devices.
Their method is detailed in Science: https://science.sciencemag.org/content/373/6550/99.abstract
#sciencenews #physics
Science
Laser soliton microcombs heterogeneously integrated on silicon
The realization of optical frequency combs, light sources with precisely spaced frequencies across a broad spectrum of wavelengths, in dielectric microresonators has affected a range of applications from imaging and ranging to precision time keeping and metrology.…
Long-life lithium batteries.
Researchers at the Pacific Northwest National Laboratory have increased the lifetime of lithium-metal electric vehicle batteries to a record level by using microscale structured anodes. This is an important step towards the goal of lighter, cheaper, and longer-lasting electric vehicle batteries.
Their latest results are published in Nature Energy: http://dx.doi.org/10.1038/s41560-021-00852-3
#sciencenews #physics #chemistry #energy
Researchers at the Pacific Northwest National Laboratory have increased the lifetime of lithium-metal electric vehicle batteries to a record level by using microscale structured anodes. This is an important step towards the goal of lighter, cheaper, and longer-lasting electric vehicle batteries.
Their latest results are published in Nature Energy: http://dx.doi.org/10.1038/s41560-021-00852-3
#sciencenews #physics #chemistry #energy
Nature
Balancing interfacial reactions to achieve long cycle life in high-energy lithium metal batteries
Nature Energy - The development of Li metal batteries requires understanding of cell-level electrochemical processes. Here the authors investigate the interplay between electrode thickness,...
Stretching graphene.
A team of researchers at the Universität Basel have demonstrated the controllable modification of the electronic properties of graphene during stretching processes. The results could lead to the design of new electronic components using the wonder material.
The mechanisms are explained in Communications Physics: http://dx.doi.org/10.1038/s42005-021-00651-y
#sciencenews #graphene #physics
A team of researchers at the Universität Basel have demonstrated the controllable modification of the electronic properties of graphene during stretching processes. The results could lead to the design of new electronic components using the wonder material.
The mechanisms are explained in Communications Physics: http://dx.doi.org/10.1038/s42005-021-00651-y
#sciencenews #graphene #physics
Nature
Global strain-induced scalar potential in graphene devices
Communications Physics - The electrical and optical properties of a material depend strongly on the details of its crystal structure. Here, the authors report a technique to mechanically deform the...
Beetle microstructures.
The interplay between mechanical and optical performance in beetle exoskeletons has been probed by researchers at Virginia Tech. They discovered that the structures providing mechanical support are also contributors to the optical properties such as colour.
Their results can be viewed in PNAS: https://www.pnas.org/content/118/25/e2101017118
#sciencenew #physics
The interplay between mechanical and optical performance in beetle exoskeletons has been probed by researchers at Virginia Tech. They discovered that the structures providing mechanical support are also contributors to the optical properties such as colour.
Their results can be viewed in PNAS: https://www.pnas.org/content/118/25/e2101017118
#sciencenew #physics
PNAS
Microstructural design for mechanical–optical multifunctionality in the exoskeleton of the flower beetle Torynorrhina flammea
In the design of multifunctional materials, harnessing structural and compositional synergies while avoiding unnecessary trade-offs is critical in achieving high performance of all required functions. Biological material systems like the cuticles of many…
Two-photon gates.
Researchers at University of Washington have developed a deterministic, high-fidelity two-bit quantum logic gate that takes advantage of a new form of light. This new logic gate is orders of magnitude more efficient than the current technology.
Their advance is recorded in Physical Review A: http://dx.doi.org/10.1103/PhysRevA.103.052610
#sciencenews #physics
Researchers at University of Washington have developed a deterministic, high-fidelity two-bit quantum logic gate that takes advantage of a new form of light. This new logic gate is orders of magnitude more efficient than the current technology.
Their advance is recorded in Physical Review A: http://dx.doi.org/10.1103/PhysRevA.103.052610
#sciencenews #physics
Physical Review A
Two-photon controlled-phase gates enabled by photonic dimers
Photons are appealing as flying quantum bits due to their low-noise, long coherence times, light-speed transmission, and ease of manipulation at the single-qubit level using standard optical components such as beam splitters and waveguides. The challenge…
A new quasiparticle.
National University of Science and Technology MISIS scientists have experimentally shown the existence of a new type of quasiparticle, formed of the excitations of coupled photon pairs in qubit chains. Their discovery confirms previous theoretical predictions.
Their results are described in Physical Review B: http://dx.doi.org/10.1103/PhysRevB.103.224520
#sciencenews #physics
National University of Science and Technology MISIS scientists have experimentally shown the existence of a new type of quasiparticle, formed of the excitations of coupled photon pairs in qubit chains. Their discovery confirms previous theoretical predictions.
Their results are described in Physical Review B: http://dx.doi.org/10.1103/PhysRevB.103.224520
#sciencenews #physics
Physical Review B
Topological excitations and bound photon pairs in a superconducting quantum metamaterial
Topological photonics enables resilient routing and localization of light. Of special interest are topological states of quantum light promising disorder-robust quantum correlations. Here, the authors design and fabricate a one-dimensional dimerized array…