Transfer of Charge Observed

Transfer of Charge Observed
© UDE/Andreas Reichert

Everyone has gotten an electric shock when touching a door handle. That’s because when two different substances touch, an electrostatic charge can occur that dissipates with a small flash. This frictional electricity can be used, for example, to separate particles in exhaust gases, but it can also unintentionally trigger explosions, for example when flammable liquids or powders are being handled. However, what exactly happens during contact electrification is so far only rudimentarily understood.

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Atomic Layer Pushes Surface Steps Away

Atomic Layer Pushes Surface Steps Away
© UDE/Petrović

Elbow mentality in a two-dimensional material: This has recently been discovered by an international team led by the Center for Nanointegration (CENIDE) at the University of Duisburg-Essen (UDE): The physicists succeeded in creating boron layers with a height of a single atom. While growing, the material simply pushes interfering steps on the substrate out of the way. The team published its results in the scientific journal ACS Nano.

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Stable and Catalytically Active Pigment

Stable and Catalytically Active Pigment
UDE/Reichenberger

It is one of the softest white pigments used by the industry. However, zinc sulfide turns gray over time if it is not appropriately pretreated. Chemists under the leadership of the Center for Nanointegration (CENIDE) at the University of Duisburg-Essen (UDE) discovered a way to retain its brilliant color and also enable its use as a catalyst; for example, to convert sunlight into usable energy. The scientific journal "Advanced Functional Materials" covers the topic in its latest issue.

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