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Speed at its limits

Physicists develop ultra-fast semiconductor nano-lasers

01-10-2014

One thousand billion operations per second – this peak value is achieved by semiconductor nano-lasers developed by physicists at the University of Jena together with their colleagues from Imperial College London. As the researcher report in the current issue of the journal of „Nature Physics“, ...

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“Multi-spectra glasses” for scanning electron microscopy

30-09-2014

The scanning electron microscope is not only used for precisely surveying the surface topology of samples, but also for determining their chemical compositions. This is done by exciting the atoms to fluoresce under irradiation by an electron beam while scanning the sample. This secondary emission ...

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Interstellar molecules are branching out

29-09-2014

For the first time a carbon-bearing molecule with a "branched" structure was detected in interstellar space. The molecule, iso-propyl cyanide, was discovered in Sgr B2, a star forming region close to the center of our galaxy that is a hot-spot for molecule-hunting astronomers. The branched ...

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New organic semiconductor material

Organic tin in polymers increases their light absorption

29-09-2014

Researchers of the Christian-Albrechts-University of Kiel (CAU), Germany, successfully integrated organic tin into semiconducting polymers (plastics) for the first time. Semiconducting polymers can be used, for example, for the absorption of sun light in solar cells. By incorporating organic tin ...

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Charge transport jamming in solar cells

Polymer researchers decipher the working mechanism of novel perovskite solar cells

26-09-2014

Researchers from the Max Planck Institute for Polymer Research in Mainz, jointly with scientists from Switzerland and Spain, have investigated the working mechanism of a new type of solar cells in which an organic-inorganic perovskite compound forms the light-absorbing layer. These cells can be ...

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"Funnel" attracts bonding partners to biomolecule

Water movement as detection aid for molecules

26-09-2014

Water is a ubiquitous solvent in all life sciences – sometimes referred to as the "matrix of life". Contrary to earlier assumptions, it is not a passive witness of biochemical processes; rather, it participates in them actively. By influencing the movement of water molecules surrounding their ...

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Flexible electronics off the roll – more than just luminous film

Fraunhofer FEP works on cost-effective system solutions for flexible devices

25-09-2014

A significant growth is predicted for the market of flexible devices. The topic “Wearables”, namely intelligent, wearable systems with several useful and funny features is currently one of the major discussion topics. To enjoy more comfort, exceptional designs and higher functionality ...

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“Airpocalypse” explained

The causes of China’s record level fine particulate pollution in winter 2013

25-09-2014

At the beginning of 2013 a greyish-brown blanket of smog lay over large areas of China for several months. The fine particle pollution was higher by 1 to 2 orders of magnitude than the levels normally measured in Western Europe and the United States. An international team of researchers under the ...

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A molecule in an optical whispering gallery

With the help of a microsphere and a nanowire, single unlabelled biomolecules can be detected through light

24-09-2014

Being able to track individual biomolecules and observe them at work is every biochemist’s dream. This would enable the scientists to research in detail and better understand the workings of the nanomachines of life, such as ribosomes and DNA polymerases. Researchers at the Max Planck Institute ...

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Graphene imperfections key to creating hypersensitive 'electronic nose'

24-09-2014

Researchers have discovered a way to create a highly sensitive chemical sensor based on the crystalline flaws in graphene sheets. The imperfections have unique electronic properties that the researchers were able to exploit to increase sensitivity to absorbed gas molecules by 300 times. The study ...

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