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Laser cooling of atoms containing antimatter

The cloud of exotic atoms made up of matter and antimatter was cooled by more than 200 degrees in a controlled manner. The international team of scientists from the AEgIS experiment working at CERN has made the first experimental demonstration of laser cooling of positronium atoms. This is another step on the way to precisely controlling the bound states of matter and antimatter.

Temperature dependence of chromatic dispersion for hygroscopic liquids

Using a modified Abbe refractometer, the chromatic dispersion and temperature dependence of the refractive index of a range of hygroscopic liquids was measured from 390 to 1070 nm for temperatures from 1 to 45°C. To obtain an analytical formula, the Sellmeier formula was fitted to the experimental results for each temperature and combined with the temperature dependence.

Topological phase diagram of Eu-based compounds

Combined experimental, theoretical, and computational investigations have identified the origin of outstanding magnetooptical and magnetotransport properties of EuCd2As2 and provided topological and magnetic phase diagrams for various classes of Eu-based compounds.  

Interaction of SARS-CoV-2 with host cells and antibodies: experiment and simulation

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the primary etiological agent responsible for the catastrophic global COVID-19 pandemic, as officially declared by the World Health Organization (WHO) in March 2020. This pandemic has infected more than 700 million people and claimed the lives of more than seven million people worldwide. In Poland, according to official statistics,...

How soluble misfolded proteins bypass chaperones at the molecular level

Subpopulations of soluble, misfolded proteins can bypass chaperones within cells. The extent of this phenomenon and how it happens at the molecular level are unknown. Through a meta-analysis of the experimental literature we find that in all quantitative protein refolding studies there is always a subpopulation of soluble but misfolded protein that does not fold in the presence of one or more chaperones,...

Carbon Oxide Decomposition as a Novel Technique for Ultrahigh Quality ZnO Nanowire Crystallization

By modifying the classic method of growing ZnO nanowires, we were able to achieve an exceptionally high level of structural and optical quality in individual ZnO nanowires. The half-width of the exciton bound to the donor measured an unprecedented 0.5 meV. Thermodynamic calculations, based on equilibrium and Gibbs free energies, indicated that the reduction of zinc oxide by carbon monoxide played...
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