Results 1 - 20 of 41.
Physics - Chemistry - 19.02.2024
Researchers assemble patterns of micro- and nanoparticles
Researchers from the Department of Chemical Engineering at the Vrije Universiteit Brussel, Riga Technical University and the MESA+ Institute at the University of Twente have succeeded in arranging very small particles (10 Âµm to 500 nm, 10 to 100 times thinner than a human hair) in a thin layer without using solvents.
Physics - 23.11.2023
Luttinger’s theorem at the center of topology
The laws of physics are based on universal principles, often associated with mathematical theorems. Identifying physical phenomena that escape these fundamental rules leads to a paradigm shift, and usually to major discoveries. In a paper published in Physical Review Letters, Lucila Peralta Gavensky, Nathan Goldman (Faculty of Science) and Subir Sachdev (Harvard), reveal a fundamental link between the violation of two major rules of solid-state physics: Luttinger's theorem and the classification rule for insulating materials .
Physics - Chemistry - 24.10.2023
FNRS researcher Tárcius Nascimento Ramos publishes in the prestigious Journal of Chemical Physics
Knowing the energy of light absorbed by a molecule enables us to understand its structure, its quantum states, its interaction with other molecules and its potential technological applications. Molecules with a high probability of simultaneously absorbing two low-energy photons of light have a wide range of applications: as molecular probes in high-resolution microscopy, as substrates for data storage in dense three-dimensional structures or as vectors in medicinal treatments.
Astronomy / Space - Physics - 27.06.2023
IceCube: our galaxy seen through a new lens
For the first time, the IceCube Neutrino Observatory has produced an image of the Milky Way using neutrinos - tiny, ghostly astronomical messengers.In a paper published tomorrow in the journal Science, the IceCube project, involving ULB scientists, presents evidence of high-energy neutrino emission from the Milky Way .
Astronomy / Space - Physics - 21.06.2023
Euclid: a European space telescope to reveal the invisible universe
Euclid is a telescope of the European Space Agency (ESA) which aims to reveal the properties and nature of dark matter and dark energy - 95% of the contents of the Universe. On the occasion of its launch from Cape Canaveral in early July, Belgian scientists involved in the Euclid mission, notably from the Université libre de Bruxelles, are highlighting their contributions and research projects .
Physics - Chemistry - 30.01.2023
New algorithm enables simulation of complex quantum systems
An international team of scientists from the University of Luxembourg, Berlin Institute for the Foundations of Learning and Data (BIFOLD) at TU Berlin and Google has now successfully developed a machine learning algorithm to tackle large and complex quantum systems. The article has been published in the renowned journal Science Advances.
Physics - Astronomy / Space - 26.01.2023
A new approach for solving the dark energy mystery
What is behind dark energy - and what connects it to the cosmological constant introduced by Albert Einstein? Two physicists from the University of Luxembourg point the way to answering these open questions of physics. The universe has a number of bizarre properties that are difficult to understand with everyday experience.
Physics - 20.09.2022
Direct observation of ideal electromagnetic fluids
What is a perfect fluid - It is a theoretical model of a fluid that allows to assume that the fluid is not viscous, that it does not conduct heat, that it is incompressible and does not create vortices. It is therefore an approximation of reality that simplifies the theoretical predictions of fluid flows.
Physics - Materials Science - 18.03.2022
Tiny but Mighty: Atomic Forces at the Engineering Scale
An interdisciplinary manuscript reporting on a collaboration between physicists and computational engineers from the University of Luxembourg and Padova (Italy) has been published in Physical Review Letters. This work reveals that interactions between many electrons in materials can induce a colossal enhancement of atomic forces at the nanoscale and in large engineering-scale systems.
Physics - 30.07.2021
Chasing neutrinos in Greenland
VUB leads pioneering project to search for cosmic particles from space with radio antennas Researchers from the Vrije Universiteit Brussel (VUB) are part of a unique installation on the Greenland ice cap that will try to observe almost elusive particles from space. The Radio Neutrino Observatory Greenland (RNO-G) is a pioneering project that uses a new method to detect cosmic neutrinos with very high energy using radio antennas.
Astronomy / Space - Physics - 11.03.2021
Nature publication IceCube in Antarctica proves 60-year-old physics prediction with high-energy particle from the Universe
In 1960, Nobel Prize winner Sheldon Glashow predicted a process within the Standard Model, the most important model of particle physics. The theory describes the interaction of an antineutrino with an electron producing a new particle. However, no particle accelerator on Earth, not even the Large Hadron Collider at CERN, is able to make this process happen because it requires extremely high particle energy.
Physics - Innovation - 08.10.2020
A new spectrometer for the LOS platform: first in Belgium and world premiere!
The Lasers, Optics and Spectroscopies (LOS) technological platform has just received a new spectrometer. Its particularity? It can be used in many fields and allows the study of phenomena with very high spectral resolution and at very high speed - of the order of a microsecond.
Physics - 14.09.2020
Flat bands appear in buckled graphene superlattices
Recent research published by the CMT group in collaboration with Rutgers University uncover a novel way of achieving flat bands in through strain superlattices. An international team led by researchers at Rutgers University in the US has found a way to create "flat? electronic bands - that is, electron states in which there is no relationship between the electrons' energy and velocity - in graphene simply by causing the material to buckle.
Physics - Astronomy / Space - 18.06.2020
KU Leuven researchers shed new light on solar flares
Plasma astrophysicists at KU Leuven have created the first self-consistent simulation of the physical processes that occur during a solar flare. The researchers used Flemish supercomputers and a new combination of physical models. Solar flares are explosions on the surface of the Sun that release an enormous amount of energy, equivalent to a trillion 'Little Boy' atomic bombs exploding at the same time.
Physics - Chemistry - 27.05.2020
Exotic particles offer deeper insight into matter and antimatter
At the European nuclear and particle physics laboratory CERN, physicists can produce extremely rare short-lived atoms and molecules. Researchers from KU Leuven have shown that these particles lead the way to uncharted territory in nuclear and particle physics. One of the oldest active installations at the Centre for European Nuclear Research (CERN) in Geneva is the ISOLDE laboratory.
Health - Physics - 09.01.2020
Copper-based nanomaterials can kill cancer cells in mice
An interdisciplinary team of scientists from KU Leuven, the University of Bremen, the Leibniz Institute of Materials Engineering, and the University of Ioannina has succeeded in killing tumour cells in mice using nano-sized copper compounds together with immunotherapy. After the therapy, the cancer did not return.
Physics - Chemistry - 04.01.2020
Clusters of gold atoms form peculiar pyramidal shape
Freestanding clusters of twenty gold atoms take the shape of a pyramid, researchers discovered. This is in contrast with most elements, which organize themselves by forming shells around one central atom. The team of researchers led by KU Leuven published their findings in Science Advances . Clusters composed of a few atoms tend to be spherical.
Astronomy / Space - Physics - 25.11.2019
Space research at KU Leuven: missions that inspire big dreams
Let's first state the obvious: the universe is endlessly fascinating. When the first ever picture of a black hole was released this spring, it easily made front pages.
Astronomy / Space - Physics - 06.11.2019
Researcher makes the heart of Mars speak
Exploring the heart (core) of Mars will elucidate the red planet's evolution and thus determine whether life would be possible in the future In 2020 the ExoMars mission will send a platform with the LaRa, a 100% Belgian-made instrument , supervised by UCLouvain researcher Véronique Dehant LaRa's objective is to observe Mars's rotation in order to understand its core Info: https://lara.oma.be and https://exploration.esa&peri
Physics - Materials Science - 08.10.2019
A promising route to scalable quantum photonics
Researchers from the Photonics Research Group (imec, Ghent University) and MIT have integrated single photon emitters in 2D layered materials with a Silicon Nitride photonic chip. Even for moderate quantum yields, dielectric cavities could be designed such that the single photon extraction into the guided mode can reach unity.