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Chemists synthesize 'flat' silicon compounds
Chemists at the University of Bonn (Germany) have synthesized extremely unusual compounds. Their central building block is a silicon atom. Different from usual, however, is the arrangement of the four bonding partners of the atom, which are not in the form of a tetrahedron around it, but flat like a trapezoid. This arrangement is usually energetically extremely unfavorable, yet the molecules are very stable. The results appear in the Journal of the American Chemical Society. (2020-12-22)

Researchers invent method to 'sketch' quantum devices with focused electrons
A technique created by researchers out of the Department of Physics and Astronomy enables them to ''sketch'' patterns of electrons into a programmable quantum material--lanthanum aluminate/strontium titanate or ''LAO/STO''. (2020-12-21)

Novel crystalline oxide may solve the problem of overheating in composite materials
Scientists at Tokyo Institute of Technology recently synthesized a novel material that displays unique thermal expansion properties. The method used by the scientists enables the production of a unique crystalline oxide containing zirconium, sulfur, and phosphorus, that exhibits two distinct mechanisms of negative thermal expansion. This is the first known material to show this property and its application may help avoid damage to composite materials, such as computer chip components, facing unexpected temperature changes. (2020-12-18)

Characterising cold fusion in 2D models
Through a study published in EPJ D, researchers show theoretically how cold fusion driven by muon capture would unfold within 2D systems, without any need for approximations. (2020-12-16)

JILA's bigger and better 'tweezer clock' is super stable
JILA physicists have boosted the signal power of their atomic 'tweezer clock' and measured its performance in part for the first time, demonstrating high stability close to the best of the latest generation of atomic clocks. (2020-12-16)

Ultracold atoms reveal a new type of quantum magnetic behavior
An MIT experiment with ultracold atoms reveals new quantum magnetic behavior that may help in design of spintronic devices and magnetic materials. (2020-12-16)

New type of atomic clock keeps time even more precisely
An MIT-designed atomic clock uses entangled atoms to keep time even more precisely than its state-of-the-art counterparts. The design could help scientists detect dark matter and study gravity's effect on time. (2020-12-16)

SUTD and MIT scientists first to simulate a large-scale virus, M13
Scientists from the Singapore University of Technology and Design and Massachusetts Institute of Technology have developed a procedure that combines various resolution levels in a computer simulation of a biological virus. Their procedure maps a large-scale model that includes features, such as a virus structure, nanoparticles, etc, to its corresponding coarse-grained molecular model. This approach opens the prospects to a whole-length virus simulation at the molecular level. (2020-12-16)

Scientists discover a new complex europium hydride
A team of researchers from Russia, the United States, and China led by Skoltech Professor Artem R. Oganov has discovered an unexpected very complex europium hydride, Eu8H46. Although devoid of superconductivity, europium hydrides are very interesting in view of chemical anomalies that make europium different from other rare-earth atoms. (2020-12-15)

Chemists from RUDN University synthesized chitin-based antibiotics
?hemists from RUDN University discovered previously unknown derivatives of chitin, a biopolymer that forms the exoskeletons of insects and carapaces of crayfish and other arthropods. The new compounds and their nanoparticles have antibacterial properties and are able to catalyze chemical reactions. (2020-12-14)

Chemists from RUDN University used crab shells to improve palladium catalysts
?hemists from RUDN University synthesized soluble biopolymers based on chitin from crab shells. Together with palladium, they form effective catalysts for organic reactions, and their nanoparticles can be re-used over ten times. (2020-12-14)

Two, six, many
Phase transitions describe dramatic changes in properties of a macroscopic system - like the transition from a liquid to a gas. Starting from individual ultracold atoms, Heidelberg University physicists under the direction of Prof. Dr Selim Jochim were able to observe the emergence of such a transition with an increasing number of particles. (2020-12-11)

Researchers find a better way to design metal alloys
A system developed by MIT researchers uses machine learning to analyze boundaries between crystal grains, allowing for the selection of desired properties in a new metal alloy. (2020-12-11)

New JILA tools 'turn on' quantum gases of ultracold molecules
JILA researchers have developed tools to 'turn on' quantum gases of ultracold molecules, gaining control of long-distance molecular interactions for potential applications such as encoding data for quantum computing and simulations. (2020-12-09)

Observing the ultrafast motion of atoms and electrons
Photo-induced electron transfer is central to numerous physical processes, for instance in the magnetization of materials. The quest to understand and control this ultrafast process has long been pursued in vain, with no answer to the question of whether electrons induce atomic motion, or vice versa. To answer this question, the atomic equivalent of the paradox of the chicken and the egg, a consortium of scientists used an X-ray laser (X-FEL) located in Stanford. (2020-12-07)

Physicists capture the sound of a "perfect" fluid
MIT physicists have observed sound waves moving through a ''perfect'' fluid. The results should help scientists study the viscosity in neutron stars, the plasma of the early universe, and other strongly interacting fluids. (2020-12-03)

Research leads to better modeling of hypersonic flow
Designing a thermal protection system to keep astronauts and cargo safe requires an understanding at the molecular level of the complicated physics going on in the gas that flows around the vehicle. Recent research at the University of Illinois Urbana-Champaign added new knowledge about the physical phenomena that occur as atoms vibrate, rotate, and collide in this extreme environment. (2020-12-03)

A French team has improved the measurement of a fundamental physical constant
A team of French researchers has just conducted the most accurate measurement to date of the fine-structure constant, which characterizes the strength of interaction between light and charged elementary particles, such as electrons. This value has just been determined with an accuracy of 11 significant digits; improving the precision of the previous measurement by a factor of 3. (2020-12-02)

RUDN University physicists described a new type of amorphous solid bodies
Many substances with different chemical and physical properties, from diamonds to graphite, are made up of carbon atoms. Amorphous forms of solid carbon do not have a fixed crystal structure and consist of structural units--nanosized graphene particles. A team of physicists from RUDN University studied the structure of amorphous carbon and suggested classifying it as a separate type of amorphous solid bodies: a molecular amorphic with enforced fragmentation. (2020-12-02)

Curtin collision models impact the future of energy
A new Curtin University-created database of electron-molecule reactions is a major step forward in making nuclear fusion power a reality, by allowing researchers to accurately model plasmas containing molecular hydrogen. (2020-12-01)

Hitting the quantum 'sweet spot': Researchers find best position for atom qubits in silicon
Australian researchers have located the 'sweet spot' for positioning qubits in silicon to scale up atom-based quantum processors. (2020-11-30)

Stable catalysts for new energy
Looking for the perfect catalyst is not only about finding the right material, but also about its orientation. Depending on the direction in which a crystal is cut and which of its atoms it thus presents to the outside world on its surface, its behavior can change dramatically. (2020-11-24)

A chemist from RUDN University synthesized analogs of natural toxins
A chemist from RUDN University suggested a simple and accurate method for the synthesis of analogs of two natural toxins, antofine and septicine. This universal approach can also be used to obtain other biologically active substances for medicinal chemistry. (2020-11-23)

Scientists develop a magnetic switch with lower energy consumption
Joint research conducted by the UAB has shown the ability to switch magnetizacion « on » and « off » using voltage in a new class of easy-to-fabricate materials containing nitrogen. These results, published in Nature Communications, may be used to reduce energy consumption in electronic technologies. (2020-11-18)

Palladium, meet copper: Skoltech researchers use machine learning to improve catalysts
Researchers from Skoltech and their colleagues from Germany and the US have studied the properties and behavior of a palladium-copper alloy under changing temperatures and hydrogen concentrations, with highly relevant implications of this research for catalyst design. The authors hope that their findings can open the door for designing metal alloys with better catalytic properties by taking into account dynamic changes in the composition and structure of materials at realistic operational conditions. (2020-11-17)

Carbyne - an unusual form of carbon
Which photophysical properties does carbyne have? This was the subject of research carried out by scientists at FAU, the University of Alberta, Canada, and the Ecole Polytechnique Fédérale de Lausanne in Switzerland, which has led to a greater understanding of the properties of this unusual form of carbon. (2020-11-17)

Looking inside the glass
Scientists at The University of Tokyo used electron spectroscopy to probe the coordination structures formed by the silicon atoms in aluminosilicate glass. This work may lead to innovations in the touchscreen and solar panel sectors. (2020-11-16)

Scientists discover a new mineral
The research team headed by Stanislav Filatov, Professor at the Department of Crystallography at St Petersburg University, has discovered a new mineral species in Kamchatka - petrovite. The scientists named the find in honour of Tomas Petrov, an outstanding crystallographer and Professor at St Petersburg University. He together with his students Arkady Glikin and Sergei Moshkin, was the first in the world to create a technology for growing jewellery malachite. (2020-11-16)

Boosted signal
First introduced into wide use in the middle of the 20th century, nuclear magnetic resonance (NMR) has since become an indispensable technique for examining materials down to their atoms, revealing molecular structure and other details without interfering with the material itself. (2020-11-16)

Identifying the microscopic mechanism of vibrational energy harvesters
The Japanese research team elucidated the microscopic mechanism in which amorphous silica becomes negatively charged as a vibrational energy harvester, which is anticipated to achieve self-power generation without charging, as it is needed for IoT that is garnering attention in recent years with its 'trillion sensors' that create a large-scale network of sensors. Unlike wind power and solar power generation, vibrational power generation, which utilizes natural vibration for power generation, is not affected by weather. (2020-11-11)

Surrey helps to produce the world's first neutron-rich, radioactive tantalum ions
An international team of scientists have unveiled the world's first production of a purified beam of neutron-rich, radioactive tantalum ions. (2020-11-10)

UChicago scientists uncover secrets to designing brain-like devices
Pritzker Molecular Engineering researchers predicted design rules for devices that mimic what occurs in our brain's neurons and synapses. (2020-11-10)

No matter the size of a nuclear party, some protons and neutrons will pair up and dance
No matter the size of a nuclear party, certain protons and neutrons will always pair up and dance, a new MIT study finds. The results will help map the workings within neutron stars and heavy radioactive nuclei. (2020-11-09)

Investigating optical activity under an external magnetic field
A new study published in EPJ B by Chengping Yin, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, South China, aims to derive an analytical model of optical activity in black phosphorous under an external magnetic field. (2020-11-06)

RUDN University chemists developed new magnetic and luminescent lanthanide-siloxane-based compounds
A team of chemists from RUDN University synthesized new organosilicon compounds containing terbium and europium ions. These complexes have an unusual cage-like crystal structure that contains four metal ions. The team was the first to study the magnetic and photophysical properties of such compounds and to observe their magnetic phase transition and luminescence properties. (2020-11-03)

A 40-year-old catalyst unveils its secrets
Activity of the industrial catalyst TS-1 relies on titanium pairs / important discovery for catalyst development (2020-11-02)

A new spin on atoms gives scientists a closer look at quantum weirdness
A team of researchers has developed a new way to control and measure atoms that are so close together no optical lens can distinguish them. (2020-10-30)

Order in the disorder:
For the first time, a team at HZB has identified the atomic substructure of amorphous silicon with a resolution of 0.8 nanometres using X-ray and neutron scattering at BESSY II and BER II. Such a-Si:H thin films have been used for decades in solar cells, TFT displays, and detectors. The results show that three different phases form within the amorphous matrix, which dramatically influences the quality and lifetime of the semiconductor layer. (2020-10-29)

Reliable quality-control of graphene and other 2D materials is routinely possible
Scientists at Ames Laboratory have discovered and confirmed a method which could serve as an easy but reliable way to test the quality of graphene and other 2D materials. (2020-10-28)

Theoreticians show which quantum systems are suitable for quantum simulations
A joint research group led by Prof. Jens Eisert of Freie Universität Berlin and Helmholtz-Zentrum Berlin (HZB) has shown a way to simulate the quantum physical properties of complex solid state systems. This is done with the help of complex solid state systems that can be studied experimentally. The study was published in the renowned journal Proceedings of the National Academy of Sciences of the United States of America (PNAS). (2020-10-27)

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