How quantum optics illuminates the nature of the quark. Scientists from the University of Rostock, Germany were able to recreate fundamental physical properties from the realm of elementary particle physics in a photonic system. The results are published in the renowned scientific journal “Nature Physics”. In their fundamental research, experimental physicists routinely bring giant yet intricate machinery to bear: Particle accelerators of enormous size smash together microscopic particles at velocities close to the speed of light, releasing unimaginable amounts of…
Discovery shows heat movement slowing down under extreme pressure instead of speeding up. UCLA researchers and their colleagues have discovered a new physics principle governing how heat transfers through materials, and the finding contradicts the conventional wisdom that heat always moves faster as pressure increases. Up until now, the common belief has held true in recorded observations and scientific experiments involving different materials such as gases, liquids and solids. The researchers detailed their discovery in a study published last week…
– the elusive glow between distant galaxies. An international team of astronomers have turned a new technique onto a group of galaxies and the faint light between them – known as ‘intra-group light’ – to characterise the stars that dwell there. Lead author of the study published in MNRAS, Dr Cristina Martínez-Lombilla from the School of Physics at UNSW Science, said “We know almost nothing about intra-group light. “The brightest parts of the intra-group light are ~50 times fainter than…
The JWST just scored another first: a detailed molecular and chemical portrait of a distant world’s skies. The telescope’s array of highly sensitive instruments was trained on the atmosphere of a “hot Saturn” — a planet about as massive as Saturn orbiting a star some 700 light-years away — known as WASP-39 b. While JWST and other space telescopes, including Hubble and Spitzer, previously have revealed isolated ingredients of this broiling planet’s atmosphere, the new readings provide a full menu of atoms, molecules, and…
Physicists at the University of Basel have experimentally demonstrated for the first time that there is a negative correlation between the two spins of an entangled pair of electrons from a superconductor. For their study, the researchers used spin filters made of nanomagnets and quantum dots, as they report in the scientific journal Nature. The entanglement between two particles is among those phenomena in quantum physics that are hard to reconcile with everyday experiences. If entangled, certain properties of the…
An international group of scientists including astronomers at the Max Planck Institute for Radio Astronomy presents new observations of the first quasar ever identified. Its name is 3C273 and it is located at a distance of approx. 1.9 Billion light years in the Virgo constellation. The new high-resolution radio images trace the jet down to the jet formation region and show how the width of the jet varies with distance from the central black hole. Active supermassive black holes emit…
… of deep-ultraviolet laser diode at room temperature. A research group led by 2014 Nobel laureate Hiroshi Amano at Nagoya University’s Institute of Materials and Systems for Sustainability (IMaSS) in central Japan, in collaboration with Asahi Kasei Corporation, has successfully conducted the world’s first room-temperature continuous-wave lasing of a deep-ultraviolet laser diode (wavelengths down to UV-C region). These results, published in Applied Physics Letters, represent a step toward the widespread use of a technology with the potential for a wide…
A team of German and Spanish researchers headed by Prof. Hubert Krenner from the Institute of Physics at Münster University has succeeded in using a soundwave to switch individual photons on a chip back and forth between two outputs at gigahertz frequencies. A team of German and Spanish researchers from Valencia, Münster, Augsburg, Berlin and Munich have succeeded in controlling individual light quanta to an extremely high degree of precision. In the “Nature Communications” journal, the researchers report how, by…
A research team from Jena (Germany) and Turin (Italy) has reconstructed the origin of an unusual gravitational wave signal. As the researchers write in the current issue of the scientific journal “Nature Astronomy”, the signal GW190521 may result from the merger of two massive black holes that captured each other in their gravitational field and then collided while spinning around each other in a rapid, eccentric motion (DOI: 10.1038/s41550-022-01813-w). When black holes collide in the universe, the clash shakes up…
The fine structure constant is one of the most important natural constants of all. At TU Wien, a remarkable way of measuring it has been found – it shows up as a rotation angle. One over 137 – this is one of the most important numbers in physics. It is the approximate value of the so-called fine structure constant – a physical quantity that is of outstanding importance in atomic and particle physics. There are many ways to measure the…
NASA’s James Webb Space Telescope has revealed the once-hidden features of the protostar within the dark cloud L1527, providing insight into the beginnings of a new star. These blazing clouds within the Taurus star-forming region are only visible in infrared light, making it an ideal target for Webb’s Near-Infrared Camera (NIRCam). The protostar itself is hidden from view within the “neck” of this hourglass shape. An edge-on protoplanetary disk is seen as a dark line across the middle of the…
A new statistical model developed by researchers from the University of Oldenburg can describe wind turbulence with considerably greater accuracy than ever before. The physicists have made important progress in realistically simulating the often extreme fluctuations of the wind. They also developed a method which uses this model to calculate three-dimensional wind fields based on data from a limited number of measurement points. The method is suitable for applications not just in the field of wind energy but also other…
… leading to ‘picophotonics’. Researchers at Purdue University have discovered new waves with picometer-scale spatial variations of electromagnetic fields which can propagate in semiconductors like silicon. The research team, led by Dr. Zubin Jacob, Elmore Associate Professor of Electrical and Computer Engineering and Department of Physics and Astronomy (courtesy), published their findings in APS Physics Review Applied in a paper titled, “Picophotonics: Anomalous Atomistic Waves in Silicon.” “The word microscopic has its origins in the length scale of a micron which is a million…
Using a simulation method based on random numbers scientists were able to describe the properties of warm dense hydrogen as accurately as never before. Finding out the properties of quantum systems that are made of many interacting particles is still a huge challenge. While the underlying mathematical equations are long known, they are too complex to be solved in practice. Breaking that barrier most probably would lead to a plethora of new findings and applications in physics, chemistry and the…
Quantum technology on its way into society: Joint project DiaQNOS to develop quantum sensors to improve brain tumor surgery. Removing a brain tumor presents surgeons with special challenges: They must remove the tumor without damaging healthy brain tissue. Among other things, it is important to keep an eye on the motor cortex responsible for movement. If, for example, a nerve pathway leading from this to the arm is severed, the patient will no longer be able to move that arm…
Innovative electronics require state-of-the-art technologies and manufacturing processes. For many medium-sized companies, this is an investment that is almost impossible to bear. But thanks to the Fraunhofer Institute for Photonic Microsystems IPMS and its two clean rooms, the latest research results and technologies on 200 and 300 mm wafers are also accessible to smaller companies. The offer ranges from consulting to process development and pilot series production. The level of automation and efficiency in industry has increased significantly with Industry…
Feedback
