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Like Fish on Waves: Electrons Go Surfing

Published: September 22, 2011.
Released by Ruhr-University Bochum  

Physicists at the RUB, working in collaboration with researchers from Grenoble and Tokyo, have succeeded in taking a decisive step towards the development of more powerful computers. They were able to define two little quantum dots (QDs), occupied with electrons, in a semiconductor and to select a single electron from one of them using a sound wave, and then to transport it to the neighbouring QD. A single electron "surfs" thus from one quantum dot to the next like a fish on a…


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biology
Nerve Cells in the Fast Lane
Nerve cells that produce dopamine for the purpose of transmitting signals to other cells affect numerous crucial brain functions. This becomes evident in diseases such as Parkinson's and schizophrenia, where dopamine transmission in the brain is impaired. In collaboration with researchers from Bonn, RUB scientists at the Mercator Research Group "Structure of Memory" have now identified in what way a specific form of this important cell is generated and which networks it forms in the course of brain development. In the process, the…

medicine
Detecting Lung Cancer at an Early Stage
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biology
Delicate Magnolia Scent Activates Human Pheromone Receptor
The question if humans can communicate via pheromones in the same way as animals is under debate. Cell physiologists at the Ruhr-Universität Bochum have demonstrated that the odorous substance Hedione activates the putative pheromone receptor VN1R1, which occurs in the human olfactory epithelium. Together with colleagues from Dresden, the Bochum-based researchers showed that the scent of Hedione generates sex-specific activation patters in the brain, which do not occur with traditional fragrances. "These results constitute compelling evidence that a pheromone effect different from normal…

biology
X-raying the Past: New Insights into the Life of Extinct Marine Creatures
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psychology
New Emotion Recognition Model
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biology
Building Block for Memory And Learning Identified
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biology
Ras Protein Regulates Circadian Rhythm
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physics
Water Ice Renders Short-lived Molecule Sustainable
'Antiaromatic compounds' is what chemists call a class of ring molecules which are extremely instable -- the opposite of the highly stable aromatic molecules. Because they exist for mere split seconds, they can only be detected by extremely demanding, ultra fast methods. Together with colleagues from Max Planck Institute for Coal Research in Mulheim, researchers from the Cluster of Excellence RESOLV at Ruhr-Universitat Bochum have succeeded in isolating the antiaromatic fluorenyl cation at extremely low temperatures in water ice. …

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