wire - news in brief

« BACK

Physics



Results 301 - 350 of 419.


Physics - 14.12.2012
CERN is granted the status of observer to the United Nations General Assembly
Geneva, 14 December 2012. The United Nations General Assembly in New York today adopted a resolution granting CERN observer status.

Physics - Electroengineering - 28.11.2012
Cold imitators made of light and atoms
The properties of basic electronic components can be simulated with ultracold atoms that flow through structures made of laser light. This is the result of work in which scientists at ETH Zurich, Switzerland, use a new generation of quantum experiments to explore the behaviour of electronic currents in a regime where predictions are often difficult to make.

Life Sciences - Physics - 17.10.2012
The evolutionary origins of our pretty smile
17. October 2012 The evolutionary origins of our pretty smile Until recently, it was not clear whether the earliest vertebrates (animals with a backbone) which had jawbones already possessed teeth or not. Now, an international research team has shown that the jaws of the prehistoric fish Compagopiscis already had teeth.

Physics - Event - 10.10.2012
CERN brings particle physics to the Frankfurt Book Fair
Geneva and Frankfurt, 10 October 2012. CERN is today showcasing its science at the Frankfurt Book Fair 2 .

Physics - 05.10.2012
The Republic of Cyprus becomes a CERN Associate Member State
The Republic of Cyprus becomes a CERN Associate Member State
Geneva 5 October 2012. The CERN Director-General, Rolf Heuer, and the Minister of Education and Culture of the Republic of Cyprus, George Demosthenous, today signed an agreement under which the Republic of Cyprus will become an Associate Member State in the pre-stage to Membership.

Physics - Electroengineering - 02.10.2012
Silicon – Close to the Breaking Point
Silicon – Close to the Breaking Point
Silicon nanowires under extreme tensile strain are a possible basis for more-efficient transistors Stretching a layer of silicon can build up internal mechanical strain which can considerably improve its electronic properties. With strained silicon, one can, for example, build faster and less power-consuming microprocessors.

Physics - 01.10.2012
SCOAP3 Open Access Initiative launched at CERN
Geneva 1 October 2012. Representatives from the science funding agencies and library communities of 29 countries are meeting at CERN today to launch the SCOAP3 2 Open Access initiative.

Physics - 20.09.2012
Professor Agnieszka Zalewska elected President of CERN Council
Professor Agnieszka Zalewska elected President of CERN Council
Geneva, 20 September 2012. CERN Council today elected Professor Agnieszka Zalewska as its 21st President for a period of one year renewable twice, with a mandate starting on 1 January 2013.

Physics - 12.09.2012
European particle physics refreshes long-term strategy
European particle physics refreshes long-term strategy Krakow, 12 September 2012. Some 500 particle physicists meeting in Krakow this week have been debating the long-term future of their field at the CERN Council Open Symposium on the European Strategy for Particle Physics.

Physics - Materials Science - 05.09.2012
New Insights into Superconducting Materials
New Insights into Superconducting Materials
An American-Swiss research team has used a new X-ray technique at Swiss Light Source (SLS) of the Paul Scherrer Institute (PSI) to investigate the magnetic properties of atomically thin layers of a parent compound of a high-temperature superconductor. It turns out that the magnetic properties of such thin films differ by only a surprisingly small degree from those of macroscopically thick samples.

Physics - Electroengineering - 05.09.2012
Using magnetism to understand superconductivity
Using magnetism to understand superconductivity
EPFL research in atomic scale magnetism could play a role in the development of new materials that could permit lossless electricity transmission. Might it one day be possible to transmit electricity from an offshore wind turbine to land-based users without any loss of current? Materials known as "high temperature" superconductors (even though they must be maintained at -140°C!), which can conduct electricity without any losses, were supposed to make this dream a reality.

Physics - 30.08.2012
"We Bring Radioactivity Data to The Japanese Public"
Fukushima: EPFL hactivist empowers the public to participate in gathering radiation fallout data. While in Japan, Robin Scheilbler has been active in a Do-it-yourself computer engineering space called Hackerspace Tokyo.

Physics - Astronomy / Space Science - 13.08.2012
LHC experiments bring new insight into matter of the primordial universe
Geneva, 13 August 2012. Experiments using heavy ions at CERN 's Large Hadron Collider (LHC) are advancing understanding of the primordial universe. The ALICE, ATLAS and CMS collaborations have made new measurements of the kind of matter that probably existed in the first instants of the universe. They will present their latest results at the Quark Matter 2012 conference, which starts today in Washington DC.

Astronomy / Space Science - Physics - 25.07.2012
AMS experiment marks one year in space
Geneva, 25 July 2012. CERN today marked the first year in space for the  Alpha Magnetic Spectrometer (AMS) with a visit from the crew of the shuttle mission, STS-134 , that successfully delivered AMS to the  the  International Space Station (ISS) just over a year ago.

Physics - Chemistry - 11.07.2012
Ultra-short X-ray laser pulses precisely surveyed for the first time
Ultra-short X-ray laser pulses precisely surveyed for the first time
X-ray lasers belong to a modern generation of light sources from which scientists in widely different disciplines expect to obtain new knowledge about the structure and function of materials at the atomic level. On the basis of this new knowledge, it could then be possible one day to develop better medicines, more powerful computers or more efficient catalysts for energy transformation.

Physics - Transport - 11.07.2012
Distribution of soot particles in particulate filters of diesel vehicles seen for the first time
Distribution of soot particles in particulate filters of diesel vehicles seen for the first time
Nowadays, all diesel motor vehicles are fitted with a particulate filter as standard, as part of the Euro5 Emission Standard. These filters prevent the harmful soot and ash particles in exhaust gases from entering the environment. However, within the automotive industry, exactly how the soot particles are deposited inside these filters has not been known.

Physics - 04.07.2012
Observation of a New Particle with a Mass of 125 GeV
Observation of a New Particle with a Mass of 125 GeV
This text has been kindly provided by CMS spokesperson Lukas Taylor In a joint seminar today at CERN and the “ICHEP 2012?

Electroengineering - Physics - 03.07.2012
Controversy clarified: Why two insulators together can transport electricity
Controversy clarified: Why two insulators together can transport electricity
How can two materials which do not conduct electricity create an electrically conducting layer when they are joined together? Since this effect was discovered in 2004, researchers have developed various hypotheses to answer this question – each with its own advocates, who defend it and try to prove its validity.

Physics - 22.06.2012
CERN to give update on Higgs search as curtain raiser to ICHEP conference
CERN to give update on Higgs search as curtain raiser to ICHEP conference Geneva, 22 June 2012. CERN 1 will hold a scientific seminar at 9:00CEST on 4 July to deliver the latest update in the search for the Higgs boson.

Physics - 08.05.2012
CERN awards major contract for computer infrastructure hosting to Wigner Research Centre for Physics in Hungary
Geneva, 8 May 2012. CERN 1 today signed a contract with the Wigner Research Centre for Physics 2 in Budapest for an extension to the CERN data centre.

Mathematics - Physics - 30.04.2012
Modeling Avalanches:
Modeling Avalanches: "We're still in the kitchen."
Christophe Ancey warns against relying blindly on the output of computational avalanche models to evaluate the safety of alpine areas. Recent events prove him right. Christophe Ancey, head of EPFL's Laboratory for Environmental Hydraulics, is an expert in modeling avalanches and other environmental flows.

Physics - Innovation - 27.04.2012
Retention of radioactive iodine in serious NPP accidents
Retention of radioactive iodine in serious NPP accidents
The Paul Scherrer Institute and industrial company CCI AG have signed a licencing agreement for iodine filtration processes In the nuclear disaster at Fukushima in Japan last year, the radioactive compounds that escaped from the plant caused both human and environmental damage.

Physics - Materials Science - 18.04.2012
Physicists observe the splitting of an electron inside a solid
Physicists observe the splitting of an electron inside a solid
An electron has been observed to decay into two separate parts, each carrying a particular property of the electron: a spinon carrying its spin – the property making the electron behave as a tiny compass needle – and an orbiton carrying its orbital moment – which arises from the electron's motion around the nucleus.

Physics - 17.04.2012
Prof. René Wasserman Award 2012 - Jin Wang
Prof. René Wasserman Award 2012 - Jin Wang
Ferroelectric Nanowires : an Investigation in Synthesis, Characterization, Functionality, and Modeling of Finite Size Effects.

Physics - 16.04.2012
PALM microscopy allowed the determination of GPCR clusters
PALM microscopy allowed the determination of GPCR clusters
Cell-type-specific β2 adrenergic receptor clusters identified using photo-activated localization microscopy are not lipid raft related, but depend on actin cytoskeleton integrity.

Physics - 13.04.2012
Spectroscopic evidence of the Peierls transition
Spectroscopic evidence of the Peierls transition
Evidence for a Peierls phase-transition in a three-dimensional multiple charge-density waves solid. Recent research on low dimensional solids lead to the discovery of the frist two-dimensional material, graphene. While a mono-dimensional chain of atoms was never produced, it can be found as a substructure in several materials.

Life Sciences - Physics - 12.04.2012
Nanopore Detection of Single Molecule RNAP-DNA Transcription Complex
Nanopore Detection of Single Molecule RNAP-DNA Transcription Complex
Nanopore Detection of Single Molecule RNAP-DNA Transcription Complex. In the past decade, a number of single-molecule methods have been developed with the aim of investigating single protein and nucleic acid interactions.

Physics - 05.04.2012
LHC physics data taking gets underway at new record collision energy of 8TeV
LHC physics data taking gets underway at new record collision energy of 8TeV Geneva, 5 April 2012. At 3:38 CEST this morning, the LHC shift crew declared ‘stable beams' as two 4 TeV proton beams were brought into collision at the LHC's four interaction points. This signals the start of physics data taking by the LHC experiments for 2012.

Physics - 12.03.2012
CERN welcomes its first artist in residence
CERN welcomes its first artist in residence Geneva, 12 March 2012. Creative collisions have begun at CERN 1 with the arrival of Julius von Bismarck as the laboratory's first Collide@CERN artist in residence.

Innovation - Physics - 09.03.2012
A major contract has been signed for the supply of solar panels derived from CERN technology
Geneva, 9 March 2011. At Geneva International Airport today SRB Energy delivered the first of the solar panels that will form one of the largest solar energy systems of Switzerland.

Physics - 09.03.2012
Nonlinear Correlation Spectroscopy (NLCS)
Nonlinear Correlation Spectroscopy (NLCS)
A novel concept for optical spectroscopy. The group of Theo Lasser (Laboratoire d'optique biomédicale LOB) present a novel concept for optical spectroscopy called nonlinear correlation spectroscopy (NLCS). NLCS analyses coherent field fluctuations of the second and third harmonic light generated by diffusing nanoparticles.

Physics - Chemistry - 07.03.2012
CERN experiment makes spectroscopic measurement of antihydrogen
CERN experiment makes spectroscopic measurement of antihydrogen Geneva, 7 March 2012. In a paper published online today by the journal Nature , the ALPHA collaboration at CERN 1 reports an important milestone on the way to measuring the properties of antimatter atoms. This follows news reported in June last year that the collaboration had routinely trapped antihydrogen atoms for long periods of time.

Physics - 05.03.2012
LHCb experiment squeezes the space for expected new physics
LHCb experiment squeezes the space for expected new physics Geneva, 5 March 2012. Results presented by the LHCb collaboration this evening at the annual ‘Rencontres de Moriond' conference, held this year in La Thuile, Italy, have put one of the most stringent limits to date on the current theory of particle physics, the Standard Model.

Life Sciences - Physics - 22.02.2012
Phage tails contain a central spike protein
Phage tails contain a central spike protein
Phage Pierces the Host Cell Membrane with the Iron-Loaded Spike. Bacteriophages with contractile tails and the bacterial type VI secretion system have been proposed to use a special protein to create an opening in the host cell membrane during infection.

Physics - 13.02.2012
LHC to run at 4 TeV per beam in 2012
LHC to run at 4 TeV per beam in 2012 Geneva, 13 February 2012. CERN 1 today announced that the LHC will run with a beam energy of 4 TeV this year, 0.5 TeV higher than in 2010 and 2011.

Physics - 13.02.2012
The art of shutting down a nuclear plant
The art of shutting down a nuclear plant
Gaëtan Girardin, researcher in nuclear engineering, gives us the key to understanding nuclear reactor safety.

Physics - 09.02.2012
Nanoelectronics: Ferroelectric devices show potential
Nanoelectronics: Ferroelectric devices show potential
News and Views The quest for a non-volatile memory technology that offers high storage density, high read and write speeds, and low power consumption has triggered intense research into new materials, mechanisms and device architectures. Among the successful memory technologies to emerge from these efforts have been the atomic switch, the resistive RAM and the magnetic tunnel junction.

Physics - 07.02.2012
Using heat for storing data
Using heat for storing data
Laser pulse changes magnetization of storage media faster and is more energy efficient than external magnetic fields An international research team has demonstrated a new way to record information on a magnetic medium without the use of a magnetic field. Instead, they found that they could record information using only a heat pulse.

Materials Science - Physics - 01.02.2012
Advanced light management in high efficiency thin-film silicon solar
Advanced light management in high efficiency thin-film silicon solar
Silicon Filaments in Silicon Oxide for Next-Generation Photovoltaics. The group of Christophe Ballif (PV-LAB - Photovoltaics and Thin Film Electronics Laboratory ) demonstrate, on the basis of advanced TEM techniques, a new, mixed phase Si/SiO2 material, which they call filamentous SiOx.

Physics - 23.01.2012
The origin of midgap states revisited
The origin of midgap states revisited
Large-Scale Simulations of a-Si:H: The Origin of Midgap States Revisited. Large-scale classical and quantum simulations are used to generate a-Si:H structures.

Physics - Electroengineering - 23.01.2012
It works: Ultrafast magnetic processes observed “live? using an X-ray laser
It works: Ultrafast magnetic processes observed “live” using an X-ray laser
In first-of-their-kind experiments performed at the American X-ray laser LCLS, a collaboration led by researchers from the Paul Scherrer Institute has been able to precisely follow how the magnetic structure of a material changes. The study was carried out on cupric oxide (CuO). The change of structure was initiated by a laser pulse, and then, with the help of short X-ray pulses, near-instantaneous images were obtained at different points in time for individual intermediate steps during the process.

Life Sciences - Physics - 17.01.2012
Imaging nuclear and mitochondrial DNA
Imaging nuclear and mitochondrial DNA
Live-Cell dSTORM of Cellular DNA Based on Direct DNA Labeling. Super-resolution (SR) fluorescence imaging relies on specially adapted microscopes and analysis software, but equally important are the fluorescent probes used to label biological proteins and molecules of interest.

Physics - 13.01.2012
One step closer to controlling nuclear fusion
One step closer to controlling nuclear fusion
Using a heating system, physicists have succeeded for the first time in preventing the development of instabilities in an efficient alternative way relevant to a future nuclear fusion reactor.

Physics - 02.01.2012
New ICASSP papers
New ICASSP papers
4 papers accepted for publication at IEEE ICASSP 2012. Recent LTS4 works about distributed detection with GT, distributed quantized consensus averaging, joint reconstruction of correlated compressed signals and dictionary learning on graphs have been accepted at IEEE ICASSP 2012. More info.

Physics - 26.12.2011
New TIP Submission
New TIP Submission
Learning of Pattern Transformation Manifolds, submitted to IEEE Transactions on Image Processing.

Astronomy / Space Science - Physics - 18.12.2011
420 magical moments in space...
420 magical moments in space...
A new tool to calculate the orientation of a satellite with respect to the Earth, developed by EPFL students, will be on board a European Space Agency rocket scheduled to launch in March 2012.