Under the right conditions, nanoparticles can form spontaneously in the air. Atmospheric nanoparticles are an important missing factor in understanding global climate change, because they could influence cloud formation and change how the Earth reflects or retains heat, said Anthony Wexler, professor of mechanical and aeronautical engineering at UC Davis.
They may also have health effects. Wexlers laboratory uses and develops equipment to detect these extremely small particles. On the coast at Bodega Bay, Calif., they found particles as small as three nanometers forming when winds are onshore. The composition of these particles has not yet been determined but they may be composed of sulfuric acid, Wexler said.
The source material could be dimethyl sulfide emitted naturally by biological processes in the ocean, or sulfur dioxide emitted from passing ships. Wexler has also developed models to study how similar particles form close to freeways in Los Angeles.
Andy Fell | EurekAlert!
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19.01.2017 | University of Gothenburg
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17.01.2017 | Max-Planck-Institut für Biogeochemie
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
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09.01.2017 | Event News
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19.01.2017 | Physics and Astronomy