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Quantum dot transistor simulates functions of neurons

A transistor that simulates some of the functions of neurons has been invented based on experiments and models developed by researchers at the Federal University of São Carlos (UFSCar) in São Paulo State, Brazil, Würzburg University in Germany, and the University of South Carolina in the United States.

50th memories: A big move

In the early 1970s, many of us were working lots of overtime, about 12-hour days. One day, I'd just gotten home when I got a phone call: “We need your help.”

Playing the numbers—a billion-dollar gamble on the European X-ray Laser

"Big science" is a term originally coined by historians to describe the major scientific advancements made by industrial nations around the period of the Second World War.

Propagating "charge density wave" fluctuations are seen in superconducting copper oxides for the first time

An international team led by scientists from the Department of Energy's SLAC National Accelerator Laboratory and Stanford University has detected new features in the electronic behavior of a copper oxide material that may help explain why it becomes a perfect electrical conductor – a superconductor – at relatively high temperatures.

Desert lizards use body oscillations to dive into sand

In the desert, the sand surface can become extremely hot during the day, up to 70ºC. In order to escape these temperatures, some desert lizards adopt a fascinating strategy: They dive a few centimeters under the sand surface where it's much cooler (around 40º C). Show More Summary

Acoustic emissions from organic martensite analogues

Some organic crystals jump around when heated up. This happens because of an extremely fast change in their crystal structure. In the journal Angewandte Chemie, scientists have now demonstrated that the crystals send out acoustic signals during this process, which may be useful in analyzing the characteristics of this phenomenon. Show More Summary

Changing the color of laser light on the femtosecond time scale

How can the color of laser light be changed? One popular method to achieve this is the so-called second harmonic generation (SHG) effect, which doubles the frequency of light and hence changes its color. However, observing this nonlinear effect requires a polar crystal in which inversion symmetry is broken. Show More Summary

A gateway to the biological world

Optical physicist Gail McConnell discusses how novel biomedical imaging techniques are changing the kinds of questions biologists can ask

How to stop the science saboteurs

With the rise of “fake news and alternative facts”, Dave Levitan’s Not A Scientist is vital if troubling reading, says Tara Shears

Some DIY LIGO data analysis

Recently, in the Arnold Sommerfeld Colloquium, we had Andrew Jackson of NBI talk about his take on the LIGO gravitational wave data, see this announcement with link to a video recording. He encouraged the audience to download the freely available raw data and play with it a little bit. Show More Summary

This Time It’s Really for Real

Twice now I’ve thought I had a finished version of the book I’ve been writing forever (see here and here). Each time it turned out that, the way the publishing process was going, I ended up having more time to … Continue reading ?

Octopus-inspired adhesive could heal wounds

Tiny suction cups could also improve semiconductor manufacturing

Synopsis: Solving Many-Body Problems with a Quantum Microscope

A microscope that images the momenta of atoms in a Bose-Einstein condensate could solve quantum many-body problems. [Physics] Published Wed Jun 14, 2017

Manufacturing hybrid silicon lasers for mass-produced photonic devices

Producing semiconductor lasers on a silicon wafer is a long-held goal for the electronics industry, but their fabrication has proved challenging. Now, researchers at ASTAR have developed an innovative way to manufacture them that is cheap, simple and scalable.

Superconducting nanowire memory cell, miniaturized technology

Developing a superconducting computer that would perform computations at high speed without heat dissipation has been the goal of several research and development initiatives since the 1950s. Such a computer would require a fraction of the energy current supercomputers consume, and would be many times faster and more powerful. Show More Summary

Synopsis: Coupled Solitons Jiggle Like Molecules

Pairs of solitons traveling in an optical fiber behave like a vibrating molecule. [Physics] Published Tue Jun 13, 2017

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