Latest science news in Physics & Chemistry
Printed perovskite LEDs
Microelectronics utilize various functional materials whose properties make them suitable for specific applications. For example, transistors and data storage devices are made of silicon, and most photovoltaic cells used for...
Minimizing thermal conductivity of crystalline material with optimal nanostructure
Professor Junichiro Shiomi et al. from the University of Tokyo aimed to reduce the thermal conductivity of semiconductor materials by reducing the internal nanostructure. The researchers successfully minimized thermal conductivity...
Precise magnets 3-D printed from special stainless steel
It looks quite inconspicuous to the casual beholder, hardly like groundbreaking innovation: a small metallic chessboard, four millimeters long on either side. At first glance, it shines like polished steel;...
Quantum effect observed in 'large' metal
In the world of materials science, sometimes main discoveries can be found in unexpected places. While working on the resistivity of a type of delafossite—PdCoO2—researchers at EPFL's Laboratory of Quantum...
Coronavirus makes locker rooms potential danger zones
Sweaty bodies, clothes in confined space make sports locker rooms 'a giant Petri dish' for coronavirus.
Adding noise for completely secure communication
How can we protect communications against eavesdropping if we don't trust the devices used in the process? This is one of the main questions in quantum cryptography research. Researchers at...
Scientists propose data encoding method for the 6G standard
Researchers around the world are working on methods to transfer data in the terahertz (THz) range, which would make it possible to send and receive information more quickly than today's...
Physicists publish worldwide consensus of muon magnetic moment calculation
For decades, scientists studying the muon have been puzzled by a strange pattern in the way muons rotate in magnetic fields, one that left physicists wondering if it can be...
Scientists carry out first space-based measurement of neutron lifetime
Scientists have found a way of measuring neutron lifetime from space for the first time -- a discovery that could teach us more about the early universe.
Ultra-thin camera lenses of the future could see the light of day
In the future, camera lenses could be thousands of times thinner and significantly less resource-intensive to manufacture. Researchers now present a new technology for making the artificial materials known as...
Cascade sets the stage for superconductivity in magic-angle twisted bilayer graphene
The researchers used scanning tunneling microscopy to observe what happens when they add additional electrons to magic-angle twisted bilayer graphene. They observed a cascade of transitions in the electronic properties,...
Scientists apply 'twistronics' to light propagation and make a breakthrough discovery
A research team has employed ''twistronics'' concepts (the science of layering and twisting two-dimensional materials to control their electrical properties) to manipulate the flow of light in extreme ways. The...
Stiffer roadways could improve truck fuel efficiency
A theoretical study suggests that small changes in roadway paving practices could reduce that efficiency loss, potentially eliminating a half-percent of the total greenhouse gas emissions from the transportation sector,...
General Dynamics nabs $2.5B for Stryker Double-V vehicles
General Dynamics received a $2.5 billion contract this week for production of Stryker Double V-Hull A1 engineering change proposal vehicles, according to the Pentagon.
A layered approach to safety
In 2011 the nuclear energy industry faced one of its greatest challenges. The disabling of three Fukushima Daiichi nuclear reactors in the wake of an earthquake-triggered tsunami sparked a global race for solutions...
Scientists carry out first space-based measurement of neutron lifetime
Scientists have found a way of measuring neutron lifetime from space for the first time—a discovery that could teach us more about the early universe.
Stiffer roadways could improve truck fuel efficiency
Every time you hear a deep rumble and feel your house shake when a big truck roars by, that’s partly because the weight of heavy vehicles causes a slight deflection in the...
Electrochemistry cuts CO₂ footprint of synthesizing ethylene oxide
Strategy adds to toolkit for greening the chemical industry
Sound waves transport droplets for rewritable lab-on-a-chip devices
Engineers have demonstrated a versatile microfluidic lab-on-a-chip that uses sound waves to create tunnels in oil to digitally manipulate and transport droplets. The technology could form the basis of a...
How to make a molecular string of rings
By tethering 2 molecular pumps together, chemists can build polyrotaxanes with exquisite precision
Researchers mimic nature for fast, colorful 3D printing
Brilliantly colored chameleons, butterflies, opals - and now some 3D-printed materials -- reflect color by using nanoscale structures called photonic crystals. A new study demonstrates how a modified 3D-printing process...
Ava DuVernay, Whoopi Goldberg elected to Academy's Board of Governors
The Academy of Motion Picture Arts and Sciences announced the new additions to the 2020-2021 Board of Governors.
Tiny pump builds polyrotaxanes with precision
Northwestern University researchers have developed the most precise way to build polyrotaxanes, a mechanically locked polymer for slide-ring gels, battery electrode materials and drug-delivery platforms.
Smallest cavity for light realized by graphene plasmons
Miniaturization has enabled technology like smartphones, health watches, medical probes and nano-satellites, all unthinkable a couple decades ago. Just imagine that in the course of 60 years, the transistor has...
Disordered proteins follow diverse transition paths as they fold and bind to a partner
Transition paths of macromolecular conformational changes such as protein folding are predicted to be heterogeneous. However, experimental characterization of the diversity of transition paths is extremely challenging because it requires...
A precise polyrotaxane synthesizer
Mechanically interlocked molecules are likely candidates for the design and synthesis of artificial molecular machines. Although polyrotaxanes have already found niche applications in exotic materials with specialized mechanical properties, efficient...
h/e oscillations in interlayer transport of delafossites
Microstructures can be carefully designed to reveal the quantum phase of the wave-like nature of electrons in a metal. Here, we report phase-coherent oscillations of out-of-plane magnetoresistance in the layered...
Chloride-mediated selective electrosynthesis of ethylene and propylene oxides at high current density
Chemicals manufacturing consumes large amounts of energy and is responsible for a substantial portion of global carbon emissions. Electrochemical systems that produce the desired compounds by using renewable electricity offer...