Home  |  Top News  |  Most Popular  |  Video  |  Multimedia  |  News Feeds  |  Feedback
  Medicine  |  Nature & Earth  |  Biology  |  Technology & Engineering  |  Space & Planetary  |  Psychology  |  Physics & Chemistry  |  Economics  |  Archaeology
Top > Technology & Engineering >

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…


Full Story »


More news from Ruhr-University Bochum


biology
Where Memory Is Encoded And Retrieved: New Findings in a Long-standing Debate
Are the same regions and even the same cells of the brain area called hippocampus involved in encoding and retrieving memories or are different areas of this structure engaged? This question has kept neuroscientists busy for a long time. Researchers at the Mercator Research Group "Structure of Memory" at RUB have now found out that the same brain cells exhibit activity in both processes. They have published their results in the journal "Hippocampus".

biology
Assessing Quality of Flowing Waters with DNA Analyses
The quality of waters can be assessed using of the organisms occurring therein. This approach often results in errors, because many species look alike. Therefore, new methods focus on DNA analyses instead. Biologists at the Ruhr-Universität Bochum (RUB) have optimised the process so that they are now able to identify many organisms at once in a quick and reliable manner using short DNA sequences. The results have been published in the PLOS ONE magazine.

psychology
How Cortisol Reinforces Traumatic Memories
The stress hormone cortisol strengthens memories of scary experiences. However, it is effective not only while the memory is being formed for the first time, but also later when people look back at an experience while the memory reconsolidates. This has been published by cognition psychologists from the Ruhr-Universität Bochum in the journal "Neuropsychopharmacology". They suggest that the results might explain the persistence of strong emotional memories occurring in anxiety and Post-Traumatic Stress Disorder (PTSD). …

medicine
RUB Scientists Develop Mouse Model for Spinocerebellar Ataxia 6
Scientists at the Ruhr-Universität Bochum established a mouse model for the human disease SCA6. SCA6 is characterised by movement deficits and caused by similar genetic alterations as Chorea Huntington. The mouse model will be used to investigate the disease mechanisms. Experiments suggest that an impairment of eye blink conditioning could be an early disease symptom. The team from the Department of Zoology and Neurobiology published their data in the Journal of Neuroscience; the work was highlighted by the editor's commentary. …

chemistry
A Protective Shield for Sensitive Catalysts
An international research team has found a way of protecting sensitive catalysts from oxygen-caused damage. In the future, this could facilitate the creation of hydrogen fuel cells with molecular catalysts or with biomolecules such as the hydrogenase enzyme. To date, this could only be accomplished using the rare and expensive precious metal platinum. Together with their French colleagues, researchers from Bochum and Mülheim describe the way in which a hydrogel can serve as a "protective shield" for biomolecules by two articles written in…

biology
Coral Colonies More Genetically Diverse Than Assumed
Coral colonies are more genetically diverse than it has been assumed to date. This is the conclusion drawn by biologists at Ruhr-Universität Bochum, who have conducted comprehensive studies into the genetic variability in individual colonies of different reef-forming coral species. "However, this doesn't mean we should expect that this variability can compensate for corals dying worldwide due to climate change," says Maximilian Schweinsberg from the Department of Animal Ecology, Evolution and Biodiversity, headed by Prof Dr Ralph Tollrian. In collaboration with colleagues, the…

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
A new diagnostic method, namely spectral histopathology, facilitates marker-free detection of individual subtypes of lung cancers. It was developed by researchers at the PURE consortium at Ruhr-Universität Bochum (RUB). They have successfully applied it in collaboration with clinicians at the Ruhrlandklinik in Essen. It is an automatable imaging process which, by classifying specific forms of lung cancer, facilitates a prognosis regarding a tumour's aggressiveness. The team, headed by RUB Prof Dr Klaus Gerwert, compares the results of traditional diagnostic procedures with those of…

Related »

Water 
6/15/12 
Researchers Develop Optical Displays from Water And Air
For many years, scientists have been pursuing ways to mimic the perplexing capability of the lotus leaf to repel …
Surface 
6/24/14 
Morphable Surfaces Could Cut Air Resistance
CAMBRIDGE, Mass-- There is a story about how the modern golf ball, with its dimpled surface, came to be: …
Patterns 
2/3/15 
Wrinkle Predictions
As a grape slowly dries and shrivels, its surface creases, ultimately taking on the wrinkled form of a raisin. …
Materials 
6/11/15 
Surfaces Get Smooth Or Bumpy on Demand
CAMBRIDGE, Mass--An MIT team has developed a way of making soft materials, using a 3-D printer, with surface textures …
Patterns 
4/23/15 
Boiling Down Viscous Flow
CAMBRIDGE, Mass--Drizzling honey on toast can produce mesmerizing, meandering patterns, as the syrupy fluid ripples and coils in a …
Timonen 
7/22/13 
Researchers Make Droplets Dance
Researchers from Aalto University and Paris Tech have placed water droplets containing magnetic nanoparticles on strong water repellent surfaces …
High 
4/11/12 
Controlling the Cut - Nottingham Engineers Top the Leader Board
A high-tech, precision, water jet milling control system which could transform the manufacture of complex aerospace, optical and biomedical …
Oleds 
11/1/11 
Researchers Roll Out a New Form of Lighting
In this month's edition of Physics World, Paul Blom and Ton van Mol from the Holst Centre in Eindhoven …
More » 
 
© Newsline Foundation  |  About  |  Privacy Policy  |  Feedback  |  Mobile