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The origins of roughness

Origins of surface texture investigated

19-Feb-2020

Most natural and artificial surfaces are rough: metals and even glasses that appear smooth to the naked eye can look like jagged mountain ranges under the microscope. There is currently no uniform theory about the origin of this roughness despite it being observed on all scales, from the atomic ...

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New biochemical compound can break down environmental pollutants

Helpful Oxygen Carriers

19-Feb-2020

Enzymes with flavin cofactor play an important part in plants, fungi, bacteria and animals: as oxygenases they incorporate oxygen into organic compounds. For instance this allows people to excrete foreign substances more effectively. Until now scientists were agreed that such flavin-dependent ...

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Electrons in rapid motion

Researchers observe quantum interferences in real-time using a new extreme ultra-violet light spectroscopy technique

18-Feb-2020

A team headed by Prof. Dr. Frank Stienkemeier and Dr. Lukas Bruder from the Institute of Physics at the University of Freiburg has succeeded in observing in real-time ultrafast quantum interferences — in other words the oscillation patterns — of electrons which are found in the atomic shells of ...

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Nanobubbles in nanodroplets

Researchers investigate ultrafast reaction of superfluid helium triggerd by extreme ultraviolet laser pulses

10-Jan-2020

A team headed by Professor Frank Stienkemeier at Freiburg’s Institute of Physics and Dr. Marcel Mudrich, professor at the University of Aarhus in Denmark, has observed the ultrafast reaction of nanodroplets of helium after excitation with extreme ultraviolet radiation (XUV) using a free-electron ...

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First synthesis of a cationic tetrahedral cluster in solution

23-Oct-2019

Main-group atoms often occur in small clusters, which can be neutral, negative or positive charged. The best known neutral cluster-tetrahedron is white phosphorus (P4), but other tetrahedra can also be isolated. They are four-atom molecules whose spatial arrangement corresponds to a tetrahedron ...

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Old materials in a new design

Researchers present useful ideas for 3D printing

08-Oct-2019

Plastic could soon be saying goodbye to its bad reputation. A working group headed by Professor Rolf Mülhaupt at the Freiburg Materialforschungszentrum (FMF) is currently developing “single-polymer composites” that can be produced from both fossil and renewable raw materials and later recycled ...

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Hollow structures in 3D

Researchers succeed in printing channel structures in glass

02-Apr-2019

Quartz glass is the preferred material for applications that require long-term use because of its high chemical and mechanical stability and excellent optical properties. The engineer Prof. Dr. Bastian E. Rapp from the Department of Microsystems Engineering (IMTEK) at the University of Freiburg ...

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Finally available in a bottle

Researchers succeed in gaining access to an important chemical compound

11-Feb-2019

Since the discovery of the first homoleptic metal carbonyl complex Ni(CO)4 more than 130 years ago, scientists try to obtain further such compounds formed from a carbon monoxide molecule and a metal that are important for basic research as well as applications. The last new compound of this type ...

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Measuring the Nanoworld

Researchers establish a benchmark for accurate determination of internal dimensions within individual molecules

05-Sep-2018

A worldwide study involving 20 laboratories has established and standardized a method to measure exact distances within individual biomolecules, down to the scale of one millionth of the width of a human hair. The new method represents a major improvement of a technology called single-molecule ...

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Biological signalling processes in intelligent materials

Innovative biohybrid systems with information processing functionality

20-Jul-2018

Scientists from the University of Freiburg have developed materials systems that are composed of biological components and polymer materials and are capable of perceiving and processing information. These biohybrid systems were engineered to perform certain functions, such as the counting signal ...

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