Latest science news in Physics & Chemistry
Study reveals how long COVID-19 remains infectious on cardboard, metal and plastic
The virus that causes COVID-19 remains for several hours to days on surfaces and in aerosols, a new scientific study has found. The study suggests that people may acquire the...
MLS extends moratorium on organized team practices through March 27
Major League Soccer's team practice moratorium was extended through March 27 because of the coronavirus; other soccer leagues also made announcements.
"It's a stake in the back": 'Nonessential' businesses close after stay-home orders
Business operators are sad and confused by coronavirus-fighting stay-home orders that have deemed their life's work not essential. But they're on board.
Drive-through coronavirus testing site to open at stadium in Lake Elsinore
A drive-through facility for coronavirus testing will open at a baseball stadium in Lake Elsinore this weekend.
How to get conductive gels to stick when wet
Polymers that are good conductors of electricity could be useful in biomedical devices, to help with sensing or electrostimulation, for example. But there has been a sticking point preventing their...
On-demand glass is right around the corner
A research group coordinated by physicists of the University of Trento was able to probe internal stress in colloidal glasses, a crucial step to controlling the mechanical properties of glasses....
How to get conductive gels to stick when wet
Polymers that are good conductors of electricity could be useful in biomedical devices, to help with sensing or electrostimulation, for example. But there has been a sticking point preventing their widespread use: their...
Olympic flame arrives in Japan for 2020 Summer Games
The Tokyo 2020 Go plane carrying the Olympic flame landed in Japan on Friday after flying from Greece. The flame will continue its journey throughout the host country until the...
Scientists propose new approach to measuring atoms
Today, when new drugs are designed with the help of supercomputers, and electronic devices operate on a nanoscale, it is very important for scientists to understand how neighboring molecules behave...
Symmetry-enforced three-dimension Dirac phononic crystals
Dirac semimetals are critical states of topologically distinct phases. Such gapless topological states have been accomplished by a band-inversion mechanism, in which the Dirac points can be annihilated pairwise by...
On-chip single-mode CdS nanowire laser
In recent years, increasing attention has been paid to the integration of active nanowires with on-chip planar waveguides for on-chip light sources. Towards this goal, scientists in China demonstrated a...
O-FIB: Far-field-induced near-field breakdown for direct nanowriting in an atmospheric environment
Lasers are becoming one of the dominant tools in current manufacturing industry. Much effort has been devoted to improving processing accuracy, and spatial resolutions as low as micrometers have been achieved in laser...
Heterostructure and Q-factor engineering for low-threshold and persistent nanowire lasing
Semiconductor nanowire lasers are a crucial component for on-chip integrated optoelectronics. However, silicon-integrated, room-temperature, continuously-operating and electrically-pumped nanowire lasers have not yet been demonstrated. In this work, a method to...
Learning to synthesize: Robust phase retrieval at low photon counts
An artifact-free computational approach to extract the phase of light from noisy intensity signals improves imaging of transparent objects, such as biological cells, under low light conditions. The procedure separates...
New mechanism of optical gain in two-dimensional material requires only extremely low input power
Optical gain is a prerequisite for signal amplification in an optical amplifier or laser. It typically requires high levels of current injection in conventional semiconductors. By exploring an intricate balance...
Tiny double accelerator recycles energy
A team of DESY scientists has built a miniature double particle accelerator that can recycle some of the laser energy fed into the system to boost the energy of the...
First ultra-low threshold continuous-wave lasing in GeSn
Transistors in computer chips work electrically, but data can be transmitted more quickly with light. Researchers have therefore been looking for a way to integrate a laser directly into silicon...
One-kilometer breakthrough made in quantum field
A team led by Prof. Guo Guangcan from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) and collaborators first realized distribution of high-dimensional...
Water-balloon physics is high-impact science
Water balloons may seem like a trivial matter. A toy for mischievous kids in summer. But for scientists, the behavior of balls of liquid wrapped in a thin elastic membrane...
Researchers invent method to unlock potential of widely used drug
Sugars like polysaccharides are found everywhere in nature and are believed to be essential for life to arise. In humans, they cover the surface of all cells and the family...
Molecular vibrations reduce the maximum achievable photovoltage in organic solar cells
Scientists at TU Dresden and Hasselt University in Belgium investigated the physical causes that limit the efficiency of novel solar cells based on organic molecular materials. Currently, the voltage of...
Porous material enables autonomous underwater vehicles to travel further
Since most autonomous underwater vehicles must carry their own energy when working under water, variable methods are usually adopted to improve endurance, such as low-power electronic equipment, efficient propulsion method...
The power of attraction: Magnets in particle accelerators
In 1820, Hans Christian Oersted gave a demonstration on electricity to a class of advanced students at the University of Copenhagen in Denmark. Using an early battery prototype, he looked...
Atomic defect lines suppress deactivation of iron oxide catalysts
Catalysts, or substances that accelerate chemical reactions, have various industrial applications. One widely used catalyst in catalytic converters is palladium, which helps turn toxic carbon monoxide and hydrocarbons from vehicle...
Electric jolt to carbon makes better water purifier
Nagoya University scientists have developed a one-step fabrication process that improves the ability of nanocarbons to remove toxic heavy metal ions from water. The findings, published in the journal ACS...
Researchers develop hollow ZSM-5 zeolite catalyst with low silicon to aluminum ratio
ZSM-5 zeolite plays a vital role in petroleum cracking and refining of petrochemical products due to its microporous structure (0.51-0.56 nm) and tunable solid acid characteristics. Since zeolite micropores limit...
Scientists reveal dynamic silver crystallization by in-situ SEM
Different structured materials have different properties and applications. Disclosing the formation mechanism of material structures may help develop routes for the rational synthesis. However, how the materials structures grow and...
The best multi-headphone power amps for studio use
So everyone can hear. (Jan Střecha via Unsplash/)We’ve all shared earbuds and used headphone splitters to share music and listen with others. In studio settings, multiple people often need to hear the same...