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21 Current news of Helmholtz-Zentrum Berlin für Materialien und Energie

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Nanostructures in human teeth

06-Jun-2016

Dentin is one of the most durable biological materials in the human body. Researchers from Charité–Universitätsmedizin Berlin were able to show that the reason for this can be traced to its nanostructures and specifically to the interactions between the organic and inorganic components. ...

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Measuring chemistry: local fingerprint of hydrogen bonding captured in experiments

21-Mar-2016

A team from Helmholtz-Zentrum Berlin has been able for the first time to measure how new bonds influence molecules: they have reconstructed the “energy landscape” of acetone molecules using measurement data from the Swiss Light Source (SLS) of the Paul Scherrer Institut, and thereby empirically ...

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Optimum band gap for hybrid silicon/perovskite tandem solar cell

11-Jan-2016

Tandem solar cells based on silicon and perovskites have raised high hopes for future high efficiency solar modules. A team led by perovskite solar cell pioneer Henry Snaith at the University of Oxford has now shown, with contributions by Bernd Rech and Lars Korte of the Helmholtz-Zentrum ...

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Whispering gallery modes in Silicon nanocones intensify luminescence

30-Nov-2015

Silicon, a semiconducting material, reveals new talents when reduced to nanoscopic dimensions. A joint team at the HZB Institute of Nanoarchitectures for Energy Conversion and the Max Planck Institute for the Science of Light (MPL) has demonstrated this. Silicon nanocones generate 200 times as ...

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Towards graphene biosensors

30-Jun-2015

For the first time, a team of scientists has succeeded in precisely measuring and controlling the thickness of an organic compound that has been bound to a graphene layer. This might enable graphene to be used as a sensitive detector for biological molecules in the future. Pure carbon occurs in ...

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Strong teeth: Nanostructures under stress make teeth crack resistant

16-Jun-2015

Human teeth have to serve for a lifetime, despite being subjected to huge forces. But the high failure resistance of dentin in teeth is not fully understood. An interdisciplinary team led by scientists of Charite Universitaetsmedizin Berlin has now analyzed the complex structure of dentin. At the ...

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Artificial photosynthesis: New, stable photocathode with great potential

18-May-2015

A team at the HZB Institute for Solar Fuels has developed a new composite photocathode for generating hydrogen with high quantum efficiency using sunlight. This enables solar energy to be stored chemically.The photocathode consists of a thin film of chalcopyrite produced by HZB/PVcomB coated with ...

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Insight into inner magnetic layers

19-Feb-2015

Measurements at BESSY II have shown how spin filters forming within magnetic sandwiches influence tunnel magnetoresistance - results that can help in designing spintronic component. In doing so, the teams enhanced our understanding of processes that are important for future TMR data storage ...

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New light on the "Split Peak" in x-ray (RIXS) spectra of Alcohols

16-Oct-2014

New study from Helmholtz-Zentrum Berlin in the journal "Structural Dynamics" makes sense of mysterious spectra, paving way for RIXS spectroscopy probe dynamic electronic structure of complex liquids and materials For scientists probing the electronic structure of materials using a relatively new ...

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“Multi-spectra glasses” for scanning electron microscopy

30-Sep-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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