BURSTER — This double-star system, located approximately 28,000 light-years away in the constellation Sagittarius, is a source of powerful bursts of X-ray emission. Argonne physicists have made precise measurements of exotic isotopes that explain the characteristic X-ray spectrum and luminosities of such "X-ray bursters." Illustration courtesy Dana Berry, Space Telescope Science Institute.
Argonne physicists have precisely measured the masses of nuclear isotopes that exist for only fractions of a second or can only be produced in such tiny amounts as to be almost nonexistent in the laboratory. Some isotopes had their masses accurately measured for the first time.
The results help explain the characteristic X-ray spectrum and luminosities of strange astronomical objects called "X-ray bursters."
X-ray bursters comprise a normal star and a neutron star. Neutron stars are as massive as our sun but collapsed to 10 miles across. The neutron star’s ferocious gravitational field pulls gas from its companion until the neutron star’s surface ignites in a runaway fusion reaction. For a few tens of seconds, the light from the explosion may be the most brilliant source of X-rays in the sky.
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Microelectronics as a key technology enables numerous innovations in the field of intelligent medical technology. The Fraunhofer Institute for Biomedical Engineering IBMT coordinates the BMBF cooperative project "I-call" realizing the first electronic system for ultrasound-based, safe and interference-resistant data transmission between implants in the human body.
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Thomas Heine, Professor of Theoretical Chemistry at TU Dresden, together with his team, first predicted a topological 2D polymer in 2019. Only one year later, an international team led by Italian researchers was able to synthesize these materials and experimentally prove their topological properties. For the renowned journal Nature Materials, this was the occasion to invite Thomas Heine to a News and Views article, which was published this week. Under the title "Making 2D Topological Polymers a reality" Prof. Heine describes how his theory became a reality.
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Scientists took a leukocyte as the blueprint and developed a microrobot that has the size, shape and moving capabilities of a white blood cell. Simulating a blood vessel in a laboratory setting, they succeeded in magnetically navigating the ball-shaped microroller through this dynamic and dense environment. The drug-delivery vehicle withstood the simulated blood flow, pushing the developments in targeted drug delivery a step further: inside the body, there is no better access route to all tissues and organs than the circulatory system. A robot that could actually travel through this finely woven web would revolutionize the minimally-invasive treatment of illnesses.
A team of scientists from the Max Planck Institute for Intelligent Systems (MPI-IS) in Stuttgart invented a tiny microrobot that resembles a white blood cell...
By studying the chemical elements on Mars today -- including carbon and oxygen -- scientists can work backwards to piece together the history of a planet that once had the conditions necessary to support life.
Weaving this story, element by element, from roughly 140 million miles (225 million kilometers) away is a painstaking process. But scientists aren't the type...
Study co-led by Berkeley Lab reveals how wavelike plasmons could power up a new class of sensing and photochemical technologies at the nanoscale
Wavelike, collective oscillations of electrons known as "plasmons" are very important for determining the optical and electronic properties of metals.
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