Page 11 - Atomic Physics News Today

Research by a team of chemists at the University of Toronto, led by Nobel Prize-winning researcher John Polanyi, is shedding new light on the behaviour of molecules as they collide and exchange atoms during chemical reaction. The discovery casts doubt on a 90-year old theoretical model of the behavior of the transition state, intermediate between reagents and products in chemical reactions, opening a new area of research dubbed knock-on chemistry.

 E-Mail IMAGE: Human liver cell lines (green, with blue nuclei) infected with HBV express an HBV protein (in red) in this image captured by immunofluorescence microscopy. view more  Credit: Image by Stephanie Maya, Princeton University Researchers at Princeton have determined how five cellular proteins contribute to an essential step in the life cycle of hepatitis B virus (HBV). The article describing these findings appeared March 11, 2021 in the journal Nature Communications. Viruse...

 E-Mail IMAGE: Co-authors dr. Arunlibertsen Lawzer i dr. Thomas Custer of research demonstrate the molecules of the astrochemical interest at the Planetarium of the Copernicus Science Centre. Source: IPC PAS, Grzegorz Krzyzewski... view more  Credit: © Institute of Physical Chemistry, Polish Academy of Sciences Looking at the night sky, ones thoughts might be drawn to astrochemistry. What molecules inhabit the vast spaces between the stars? Would we see the same molecules that surrou...

Loading video... VIDEO: A 3D radiation magneto-hydrodynamic FLASH simulation of the experimental platform. The video shows a rendering of the magnetic field as a function of time, with grids and cylindrical shields shown... view more  Credit: University of Rochester/Laboratory for Laser Energetics The universe is filled with magnetic fields. Understanding how magnetic fields are generated and amplified in plasmas is essential to studying how large structures in the universe were formed a...

 E-Mail Credit: Markus Rambach Researchers have struck quantum gold--and created a new word--by enlisting machine learning to efficiently navigate a 20-dimensional quantum treasure map. Physicist Dr Markus Rambach from the ARC Centre of Excellence for Engineered Quantum Systems (EQUS) at The University of Queensland said the team was able to find unknown quantum states more quickly and accurately, using a technique called self-guided tomography. The team also introduced the quvigint, which is ...

 E-Mail IMAGE: A visualization of the Glashow event recorded by the IceCube detector. Each colored circle shows an IceCube sensor that was triggered by the event; red circles indicate sensors triggered earlier... view more  Credit: IceCube Collaboration On December 6, 2016, a high-energy particle called an electron antineutrino hurtled to Earth from outer space at close to the speed of light carrying 6.3 petaelectronvolts (PeV) of energy. Deep inside the ice sheet at the South Pole, i...

Loading video... VIDEO: When repeating patterns overlap and are rotated, they create these mesmerizing arrangements called moiré patterns. Here hexagonal grids are rotated in either direction. view more  Credit: CC-0 The University of Tokyo/Rohan Mehra Material behaviors depend on many things including not just the composition of the material but also the arrangement of its molecular parts. For the first time, researchers have found a way to coax carbon nanotubes into creating moiré pa...

Credit: photo/©: Arne Wickenbrock, JGU Obtaining a precise understanding of magnetic structures is one of the main objectives of solid-state physics. Significant research is currently being undertaken in this field, the aim being to develop future data processing applications that use tiny magnetic structures as information carriers. Physicists at Johannes Gutenberg University Mainz (JGU) and the Helmholtz Institute Mainz (HIM) recently presented a new method for investigating magnetic structu...

Credit: Timur Sabirov/Skoltech Researchers at Skoltech and their colleagues proposed a photonic device from two optical resonators with liquid crystals inside them to study optical properties of this system that can be useful for future generations of optoelectronic and spinoptronic devices. The paper was published in the journal Physical Review B. The simplest kind of optical resonator consists of two mirrors directly opposite each other, "squeezing" light between them. When you stand inside ...

 E-Mail IMAGE: INRS Professor Monique Lacroix is an expert in sciences applied to food, such as irradiation. view more  Credit: Christian Fleury (INRS) A combined treatment of irradiation and essential oil vapors could effectively destroy insects, bacteria and mold in stored grains. A team from the Institut national de la recherche scientifique (INRS), led by Professor Monique Lacroix, has demonstrated the effect of this process on insects affecting rice. The study was published in t...