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Media Releases

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Datum
7 February 2013

Imaging fluctuations with X-ray microscopy

Media Releases Matter and Material Research Using Synchrotron Light

X-rays are used to investigate nanoscale structures of objects as varied as single cells or magnetic storage media. Yet, high-resolution images impose extreme constraints on both the X ray microscope and the samples under investigation. Researchers at the Technische Universität München the PSI now showed how to relax these conditions without loss of image quality. They further showed how to image objects featuring fast fluctuations, such as the rapid switching events that determine the life time of data storage in magnetic materials.

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This is a text from the PSI media archive. The contents may be out-of-date.
31 January 2013
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Magnetic nano-chessboard puts itself together

Media Releases Micro- and Nanotechnology Materials Research Matter and Material Research Using Synchrotron Light

Researchers from the Paul Scherrer Institute and the Indian Institute of Science Education and Research have been able to intentionally ‘switch off’ the magnetization of every second molecule in an array of magnetized molecules and thereby create a ‘magnetic nano-chessboard’. To achieve this, they manipulated the quantum state of a part of the molecules in a specific way.

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This is a text from the PSI media archive. The contents may be out-of-date.
25 January 2013

Proton size puzzle reinforced!

Media Releases Particle physics Research with muons Large Research Facilities Matter and Material

An international team of scientists confirmed the surprisingly small value of the proton radius with laser spectroscopy of exotic hydrogen. The experiments were carried out at PSI which is the only research institute in the world providing the necessary amount of muons for the production of the exotic hydrogen atoms made up of a muon and a proton.

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7 January 2013
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The weak side of the proton

Media Releases Matter and Material Research with muons Particle physics

An international research team has determined with a high level of accuracy, how the proton participates in the weak interaction à one of the fundamental forces of nature. Their results confirm the predictions of the Standard Model of particle physics. The experiment observed the probability of muon capture by protons à a process governed by the weak interaction. The experiment was conducted at the Paul Scherrer Institute, the only institute in the world with an accelerator capable of generating enough muons for carrying out this project in a realistic timeframe.

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3 January 2013
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How stabilised cell fibres prevent cancer cell division

Media Releases Human Health Biology Research Using Synchrotron Light

Anti-cancer drugs are used under the heading of “Chemotherapeutics” to prevent cells from dividing. Because the cells in a growing tumour divide more frequently than others, tumour cells are damaged more severely. Scientists at the Paul Scherrer Institute and the ETH Zurich have now clarified the exact mechanism of action of one class of these drugs. The data acquired is so accurate, that targeted drugs could now be developed that are even better suited to fulfil their task.

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17 October 2012
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The evolutionary origins of our pretty smile

Media Releases Biology User experiments Research Using Synchrotron Light

Until recently, it was not obvious 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. This means that teeth appeared at the same evolutionary time as jaws à or at least shortly afterwards. The leaders of this project were scientists from the University of Bristol, England, who carried out their decisive experiments at the SLS at PSI.

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16 October 2012

X-rays provide insights into volcanic processes

Media Releases Research Using Synchrotron Light Enviroment User experiments

Experiments performed at the Paul Scherrer Institute (PSI) investigate processes inside volcanic materials that determine whether a volcano will erupt violently or mildly. In the experiments, scientists heated small pieces of volcanic material similarly to conditions present at the beginning of a volcanic eruption. They used X-rays from the SLS to observe, in real time, what happens to the rock as it goes from the solid to the molten state.

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10 October 2012
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Nobelpreiswürdig: G-Protein-gekoppelte Rezeptoren

Biology Media Releases

Der Nobelpreis für Chemie geht in diesem Jahr an Robert J. Lefkowitz und Brian K. Kobilka. Sie haben herausgefunden, wie eine Familie von Rezeptoren funktioniert, die man G-Protein-gekoppelte Rezeptoren (GPCR) nennt. Auch am PSI leisten Wissenschaftler Beiträge auf diesem Forschungsgebiet.This news release is only available in German.

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2 October 2012

Silicon – Close to the Breaking Point

Media Releases Materials Research Micro- and Nanotechnology Matter and Material

Stretching a layer of silicon can lead to internal mechanical strain which can considerably improve the electronic properties of the material. Researchers at the Paul Scherrer Institute and the ETH Zurich have created a new process from a layer of silicon to fabricate extremely highly strained nanowires in a silicon substrate. The researchers report the highest-ever mechanical stress obtained in a material that can serve as the basis for electronic components. The long term goal aim is to produce high-performance and low-power transistors for microprocessors based on such wires.

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10 September 2012

Built-in Germanium Lasers could make Computer Chips faster

Media Releases Materials Research Micro- and Nanotechnology Matter and Material

Paul Scherrer Institute (PSI) researchers have investigated the mechanisms necessary for enabling the semiconductor Germanium to emit laser light. As a laser material, Germanium together with Silicon could form the basis for innovative computer chips in which information would be transferred partially in the form of light. This technology would revolutionise data streaming within chips and give a boost to the performance of electronics.

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5 September 2012

New Insights into Superconducting Materials

Media Releases Matter and Material Materials Research Research Using Synchrotron Light

A new X-ray technique provides insights into the magnetic properties of atomically thin layers of a parent compound of a high-temperature superconductor. It turns out that the magnetic properties of material films which are only a few atoms thick differ by only a surprisingly small degree from those of macroscopically thick samples. In the future, this method can be used to study the processes occurring in very thin layers of superconductors and help us to understand this intriguing phenomenon.

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11 July 2012

Ultra-short X-ray laser pulses precisely surveyed for the first time

Media Releases Large Research Facilities SwissFEL Micro- and Nanotechnology

X-ray lasers are modern light sources from which scientists expect to obtain new knowledge about the structure and function of materials at the atomic level. The scientific value of an X-ray laser stands or falls on the quality of the ultra-short X-ray pulses it produces and which researchers use to illuminate their samples. An international team led by scientists from the Paul Scherer Institute, PSI, has now precisely measured these pulses

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11 July 2012

Distribution of soot particles in particulate filters of diesel vehicles seen for the first time

Media Releases Research Using Neutrons Materials Research

Diesel motor vehicles have to be equipped with soot particulate filters, so the harmful soot and ash cannot get into the environment. Whilst these operate according to appropriate standards, up until now, the details about the distribution of soot and ash inside these filters has been unknown. Now, thanks to the special examination techniques of the Paul Scherrer Institute [PSI], the actual filter loads have been seen for the first time.

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4 July 2012
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Observation of a New Particle with a Mass of 125 GeV

Media Releases Matter and Material Particle physics

In a joint seminar today at CERN and the ICHEP 2012 conference in Melbourne, researchers of the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC) presented their preliminary results on the search for the standard model (SM) Higgs boson in their data recorded up to June 2012.

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3 July 2012

Controversy clarified: Why two insulators together can transport electricity

Media Releases Matter and Material Materials Research

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. Now, an international team under the leadership of researchers at the Paul Scherrer Institute has probably settled the controversy.

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5 June 2012
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Alzheimer plaques in 3D

Media Releases Human Health Research Using Synchrotron Light Biology

Researchers have succeeded in generating detailed three-dimensional images of the spatial distribution of amyloid plaques in the brains of mice afflicted with Alzheimer’s disease. The new technique used in the investigations provides an extremely precise research tool for a better understanding of the disease. In the future, scientists hope that it will also provide the basis for a new and reliable diagnosis method. The results were achieved within a joint project of two research teams à one from the Paul Scherrer Institute (PSI) and ETH Zurich, the other from the École Polytechnique Fédérale de Lausanne (EPFL).

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This is a text from the PSI media archive. The contents may be out-of-date.
22 May 2012

Reconstruction of atmospheric lead concentrations in Russia since 1680

Media Releases Energy and Environment Enviroment

A research team from the Paul Scherrer Institute has reconstructed the concentration record of lead in the atmosphere in Russia since 1680. The results demonstrate a significant increase in the atmospheric lead concentrations since the 1930s and a significant reduction since the 1970s.

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16 May 2012
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Energiewende: Das Ganze sehen, die Details bedenken

Media Releases Energy and Environment

Die Energiewende als politischer Wille ist Realität, aber wie wird die Schweiz ihre Energieversorgung aus dem heutigen Stand in diejenige überführen, die die für das Jahr 2050 formulierten Ziele erfüllt? Mit Fragen der Umsetzung, mit den Optionen und den Herausforderungen des beschlossenen Umbaus der schweizerischen Energielandschaft befasste sich am 14. Mai 2012 die Energietagung des Paul Scherrer Institut. Im Mittelpunkt stand der bei einer zunehmend dezentralen Energieversorgung notwendige Umbau der Stromnetze.This news release is only available in German.

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27 April 2012

Retention of radioactive iodine in serious NPP accidents

Media Releases Energy and Environment Nuclear Power Plant Safety

Researchers at the Paul Scherrer Institute [PSI] have developed a highly efficient technique for filtering radioactive iodine. It removes virtually all of the iodine from radioactively contaminated exhaust air before its release into the environment after a meltdown at a damaged nuclear power plant. The process has recently become ready for worldwide use at nuclear power installations, after PSI and the industrial company CCI AG (Balterswil/TG) have signed a licensing agreement for the PSI patented process.

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18 April 2012
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Physicists observe the splitting of an electron inside a solid

Media Releases Matter and Material Materials Research Research Using Synchrotron Light

An electron has been observed to decay into two separate parts, each carrying a particular property of the electron: a spinon carrying its spin à the property making the electron behave as a tiny compass needle à and an orbiton carrying its orbital moment à which arises from the electron’s motion around the nucleus. These newly created particles, however, cannot leave the material in which they have been produced.

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Dr. Mirjam van Daalen a.i.
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Paul Scherrer Institut
5232 Villigen PSI
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Phone: +41 56 310 56 74
Email: mirjam.vandaalen@psi.ch

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5232 01/2021

5232 — Das Magazin des Paul Scherrer Instituts

01/2021
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