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A pigment from ancient Egypt to modern microscopy

Research team produces new nanosheets for near infrared imaging

25-Mar-2020

Egyptian blue is one of the oldest manmade colour pigments. It adorns, for instance, the crown of the world famous bust of Nefertiti. But the pigment can do even more. An international research team led by Dr Sebastian Kruss from the Institute of Physical Chemistry at the University of Göttingen ...

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Graphene layer enables advance in super-resolution microscopy

Eesearchers develop a new method allowing ten-fold improvement in optical resolution

05-Sep-2019

Researchers at the University of Göttingen have developed a new method that takes advantage of the unusual properties of graphene to electromagnetically interact with fluorescing (light-emitting) molecules. This method allows scientists to optically measure extremely small distances, in the order ...

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Stickier than expected: Hydrogen binds to graphene in 10 femtoseconds

07-May-2019

Graphene is celebrated as an extraordinary material. It consists of pure carbon, only a single atomic layer thick. Nevertheless, it is extremely stable, strong, and even conductive. For electronics, however, graphene still has crucial disadvantages. It cannot be used as a semiconductor, since it ...

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German-French team of researchers discovers anti-aging in metallic glasses

05-Apr-2018

Metallic glasses and humans inhabit the same universe: they age. In time, their physical properties change towards a distinct direction. Researchers from the University of Göttingen and the European Synchrotron ESRF in Grenoble have now discovered a surprising effect in ultrastable metallic ...

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Scientists lay foundations for new type of solar cell

Using hot polarons to harvest sunlight

26-Jan-2017

An interdisciplinary team of researchers has laid the foundations for an entirely new type of photovoltaic cell. In this new method, infrared radiation is converted into electrical energy using a different mechanism from that found in conventional solar cells. The mechanism behind the new ...

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Crystals for energy conversion

Scientists find that mechanical behavior of tiny structures is affected by atomic defects

30-Sep-2016

An international team of scientists with participation from the University of Göttingen, the Indian Institute of Science, Bangalore, Pennsylvania State University, and Wright State University has measured the mechanics of tiny crystalline ceramics. Materials are made of atoms, and if they are ...

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Filming the film: Scientists observe photographic exposure live at the nanoscale

Advanced method opens up new opportunities for investigation of dynamic processes

11-Jun-2015

Photoinduced chemical reactions are responsible for many fundamental processes and technologies, from energy conversion in nature to micro fabrication by photo-lithography. One process that is known from everyday's life and can be observed by the naked eye, is the exposure of photographic film. ...

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Electrons catch a wave

Physicists use ultrashort laser pulses to drive and accelerate electrons out of nanotips

12-Mar-2012

In 1905 Albert Einstein transformed physics with his explanation of the famous photoelectric effect. In his Nobel-Prize-winning work, Einstein abandoned classical principles and introduced the concept of light particles, known today as photons, to describe light-induced electron emission from ...

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Researchers demonstrate nanoscale X-ray imaging of bacterial cells

10-Dec-2009

An ultra-high-resolution imaging technique using X-ray diffraction is a step closer to fulfilling its promise as a window on nanometer-scale structures in biological samples. In the Proceedings of the National Academy of Sciences, researchers report progress in applying an approach to "lensless" ...

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New Clues to Mechanism for "Colossal Resistance" Effects

Understanding could lead to lower-power, increased-memory data-storage devices

21-Aug-2007

Experiments at the U.S. Department of Energy's Brookhaven National Laboratory shed new light on some materials' ability to dramatically change their electrical resistance in the presence of an external magnetic or electric field. Small changes in resistance underlie many electronic devices, ...

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