Umeå University has achieved a breakthrough in the development of next-generation light sources with a new method for understanding and measuring efficiency losses in the emerging light-emitting technology known as LEC.
A newly developed instrument makes it possible to measure gas pressure by using laser light. The method, developed at Umeå University and the Industrial Doctoral School for Research and Innovation, provides very precise measurements and can, for example, quickly detect extremely small gas leaks.
Polaritons are a peculiar state, a kind of quasi-particles consisting of part-light and part-matter that can bring unexpected abilities to conventional chemical reactions. New research from Umeå University and others reveals that when the polaritons are hit by very short pulses of light they collapse, and from then the reaction will be completely controlled by conventional electronic transitions.
A unique laser system with higher peak power and shorter pulse duration than most other lasers in the world is now inaugurated at the Department of Physics at Umeå University.
Graphite oxide is a multilayer hydrophilic material produced by oxidation of graphite. It is a starting point for preparation of many materials for variety of applications. In his thesis in physics defended at Umeå University, Sweden, Artem Iakunkov includes extensive studies of some fundamental properties of graphite oxides, chemical modification and testing for several important applications.
Large asteroids or comets hitting Earth, massive volcanic eruptions and other single, deadly events are usually the focus for scientists seeking to reconstruct Earth’s past mass extinctions. In a new study, researchers from Umeå University and the University of Florida instead uncovered a new major transition between past marine faunas that could not be explained by a single catastrophic event.
Featuring works by contemporary international artists, essays about physics and art, as well as extracts from conversations between physicists and artists, the book Entangle: Physics and the Artistic Imagination is an introduction to how particle physics is inspiring the work and practice of contemporary artists.
Black holes, dark matter, gravity, space and time – these are phenomena that fascinate scientists and artists alike. Bildmuseet presents Entangle / Physics and the Artistic Imagination: painting, installation, fashion design, sculpture, film, digital artwork and photography inspired by the science which investigates the fundamental forces which shape our world. Press preview 15 November at 10:00.
Molecular sized machines could in the future be used to control important mechanisms in the body. In a recent study, researchers at University of California, Berkeley and Umeå University show how a nanoballoon comprising a single carbon molecule ten thousand times thinner than a human hair can be controlled electrostatically to switch between an inflated and a collapsed state.
Light-emitting electrochemical cells, LEC, is a newly invented lighting technology. In his thesis, physicist Amir Asadpoordarvish, Umeå University, shows how a LEC can be produced through spraying three layers of ink on a substrate and emit light by the current from an ordinary battery. LEC components can be sprayed onto complicated surfaces, for example to make a light-emitting fork.
Due to their unique properties single walled carbon nanotubes have been suggested as a promising material for electronics, optics and in other fields of materials science. When scientists from Umeå University and Aalto University tried to perform a reaction between hydrogen gas and fullerene molecules encapsulated in nanotubes something very unlikely suddenly appeared possible.