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Results 41 - 60 of 72.


Physics - Chemistry - 12.05.2021
New atomically precise graphene nanoribbon heterojunction sensor developed
A team of physicists and chemists has developed a highly sensitive sensor, which was made possible by a new heterostructure consisting of atomically precise graphene nanoribbons / Publication in 'Nature Communications' An international research team led by the University of Cologne has succeeded for the first time in connecting several atomically precise nanoribbons made of graphene, a modification of carbon, to form complex structures.

Physics - Astronomy / Space Science - 07.05.2021
The Symmetry Between Electrons and Muons Looks ’Shaky’
Experimental hints of possible new physical phenomena beyond the Standard Model Using data acquired on the worldwide biggest and strongest particle accelerator, the Large Hadron Collider (LHC) at the CERN European particle physics laboratory in Geneva (Switzerland), scientists involved in the LHCb experiment have found hints of possible new physical phenomena.

Physics - Innovation - 23.04.2021
Energy-saving gas turbines from the 3D printer
Energy-saving gas turbines from the 3D printer
Neutrons "see" internal stress in components from additive manufacturing 3D printing has opened up a completely new range of possibilities. One example is the production of novel turbine buckets. However, the 3D printing process often induces internal stress in the components which can in the worst case lead to cracks.

Astronomy / Space Science - Physics - 19.04.2021
New Exoplanet discovered orbiting young Sun-like star
New Exoplanet discovered orbiting young Sun-like star
International research team verifies the validity of the "No Hair" theorem by actual observations Light With the help of NASA's Spitzer Space Telescope, an international team of researchers has confirmed that the cosmic object OJ 287 is a distant galaxy with a binary system of two supermassive black holes in its centre, which are orbiting each other.

Physics - 16.04.2021
Quantum Spins: And yet they pair!
Quantum Spins: And yet they pair!
A quantum spin liquid is a state of matter in which interacting quantum spins do not align even at lowest temperatures, but remain disordered. Research on this state has been going on for almost 50 years, but whether it really exists has never been proven beyond doubt. An international team led by physicist Prof. Martin Dressel at the University of Stuttgart has now put an end to the dream of a quantum spin liquid for the time being.

Life Sciences - Physics - 16.04.2021
Not as dense - New 3D imaging technique allows deep insights into subcellular structures
Using a new microscope and methods from biophysics and biochemistry, scientists from the IRI Life Sciences at Humboldt-Universität and the Max Planck Institute for the Physics of Light succeeded in visualizing the density of the spindle and the surrounding cell interior Left: A new imaging setup allows for correlative fluorescence and quantitative phase imaging.

Physics - Chemistry - 09.04.2021
Optically Active Defects Improve Carbon Nanotubes
Optically Active Defects Improve Carbon Nanotubes
The properties of carbon-based nanomaterials can be altered and engineered through the deliberate introduction of certain structural "imperfections" or defects. The challenge, however, is to control the number and type of these defects. In the case of carbon nanotubes - microscopically small tubular compounds that emit light in the near-infrared - chemists and materials scientists at Heidelberg University led by Jana Zaumseil have now demonstrated a new reaction pathway to enable such defect control.

Physics - 30.03.2021
The egg in the X-ray beam
A team of scientists has been using DESY's X-ray source PETRA III to analyze the structural changes that take place in an egg when you cook it. The work reveals how the proteins in the white of a chicken egg unfold and cross-link with each other to form a solid structure when heated. Their innovative method can be of interest to the food industry as well as to the broad field of research surrounding protein analysis.

Chemistry - Physics - 30.03.2021
Researchers first to link silicon atoms on surfaces
Researchers first to link silicon atoms on surfaces
Materials such as gallium arsenide are extremely important for the production of electronic devices. As supplies of it are limited, or they can present health and environmental hazards, specialists are looking for alternative materials. So-called conjugated polymers are candidates. These organic macromolecules have semi-conductor properties, i.e. they can conduct electricity under certain conditions.

Physics - Mechanical Engineering - 29.03.2021
Strong weld joints for aerospace applications
Strong weld joints for aerospace applications
Measurements at the Research Neutron Source help with the development of intelligent welding equipment When a rocket is launched, the weld seams on the enormous fuel tanks must withstand immense forces. To produce joints with the necessary strength, a process known as "friction stir welding" is used.

Astronomy / Space Science - Physics - 24.03.2021
The very first structures in the Universe
The very first structures in the Universe
Astrophysicists at the Universities of Göttingen and Auckland simulate microscopic clusters from the Big Bang The very first moments of the Universe can be reconstructed mathematically even though they cannot be observed directly. Physicists from the Universities of Göttingen and Auckland (New Zealand) have greatly improved the ability of complex computer simulations to describe this early epoch.

Astronomy / Space Science - Physics - 17.03.2021
Flying observatory: SOFIA/GREAT observations offer new insights into star formation
Flying observatory: SOFIA/GREAT observations offer new insights into star formation
The flying observatory SOFIA (Stratospheric Observatory For Infrared Astronomy) was stationed at Cologne Bonn Airport until 16 March 2021 / A research team from the University of Cologne used it to observe regions of the sky in which stars are forming The flying observatory SOFIA (Stratospheric Observatory For Infrared Astronomy) has successfully completed its observation flights from Cologne Bonn Airport.

Physics - 05.03.2021
ERC Advanced Grant for Prof. Tilman Pfau
ERC Advanced Grant for Prof. Tilman Pfau
The European Research Council will support the research of Prof. Tilman Pfau with an ERC Advanced Grant for his new approach to understanding fermionic matter with long-range interactions using innovative quantum gas microscopy techniques. The ERC Advanced Grants are highly-prestigious grants awarded to well-established, leading scientists with a track record of groundbreaking research achievements over the past decade.

Physics - Astronomy / Space Science - 05.03.2021
Breaking the warp barrier for faster-than-light travel
Breaking the warp barrier for faster-than-light travel
Astrophysicist at Göttingen University discovers new theoretical hyper-fast soliton solutions If travel to distant stars within an individual's lifetime is going to be possible, a means of faster-than-light propulsion will have to be found. To date, even recent research about superluminal (faster-than-light) transport based on Einstein's theory of general relativity would require vast amounts of hypothetical particles and states of matter that have -exotic- physical properties such as negative energy density.

Physics - 01.03.2021
Nanoscale sound waves vibrate artificial atom
Nanoscale sound waves vibrate artificial atom
A German-polish research team from Augsburg, Münster, Munich and WrocÅ‚aw successfully mixed nanoscale sound waves and light quanta. In their study published in Optica the scientists use an 'artificial atom' that converts the vibrations of the sound wave to single light quanta - photons - with unprecedented precision.

Physics - Chemistry - 25.02.2021
Pioneering molecule on its way into quantum computers
Pioneering molecule on its way into quantum computers
Researchers from the University of Jena and University of Florence, develop cobalt compound with special quantum properties In quantum computers, instead of electrical circuits being switched on or off, quantum mechanical states are altered. For this, suitable chemical compounds are needed. A research team from the University of Jena and the University of Florence has now succeeded in producing such a compound.

Physics - 25.02.2021
New insights into the mechanism of nuclear fission
New insights into the mechanism of nuclear fission
Nuclear physicists at the University of Cologne have contributed to an international research collaboration to show the way the spin of the two fragments, resulting from the splitting of an atomic nucleus, is generated / publication in Nature A series of experiments at the ALTO particle accelerator facility in Orsay, France, has revealed that the fragments resulting from nuclear fission obtain their intrinsic angular momentum (or spin) after fission, not before, as is widely assumed.

Physics - 24.02.2021
The size of the helium nucleus measured to femtometer accuracy
The size of the helium nucleus measured to femtometer accuracy
Helium is the second most abundant element in the universe after hydrogen. Helium nuclei consist of four components, namely two protons and two neutrons. Knowing the properties of the helium nucleus is crucial for fundamental physics, for example, in order to understand the processes in atomic nuclei that are heavier than helium.

Chemistry - Physics - 23.02.2021
Ingredients for earliest life forms preserved in 3.5 billion-year-old rocks
Ingredients for earliest life forms preserved in 3.5 billion-year-old rocks
Researchers including Göttingen University discover biologically-relevant organic molecules in fluid inclusions It is generally accepted that the earliest life forms used small organic molecules as building materials and energy sources. However, the existence of such components in early habitats on Earth had not been proven to date.

Physics - Chemistry - 18.02.2021
Quantum computer on the way to prototype
Quantum computer on the way to prototype
Rydberg atoms are among the most promising candidates in the race of realizing a working quantum computer. In the new collaborative project ,,QRydDemo", researchers led by the University of Stuttgart aim to realize a Rydberg quantum computer demonstrator together with an industrial partner by 2025. In order to reach this goal, they group Rydberg atoms in a two-dimensional optical trap structure and perform quantum logical operations by controlled entanglement and shifting of the atom traps.