Physics

Using Wi-Fi signals to perform analog, wave-based computations

A pair of researchers, one with the Langevin Institute, the other a company called Greenerwave, both in France, has developed a way to use ordinary Wi-Fi signals to perform analog, wave-based computations. In their paper published in the journal Physical Review X, Philipp del Hougne and Geoffroy Lerosey describe their experiments and what they represent.

Magic number colloidal clusters

Complexity in nature often results from self-assembly, and is considered particularly robust. Compact clusters of elemental particles can be shown to be of practical relevance, and are found in atomic nuclei, nanoparticles or viruses. An interdisciplinary team of researchers led by professors Nicolas Vogel and Michael Engel at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) has decoded the structure and the process behind the formation of one class of such highly ordered clusters.

The splendid generative potential of the Sierpinski triangle

One transistor can become an oscillator with a surprising richness of behavior. However, even more interesting effects emerge if the structure of connections is fractal and shows some imperfections. Could similar rules explain the diversity and complexity of human brain dynamics?

Good vibrations: Neutrons lend insight into acoustic fracking

Hydraulic fracturing contributes significantly to US energy production. It works by tapping hard-to-reach pockets of oil and natural gas where more traditional drilling methods fall short. However, the process requires large amounts of water and chemicals, which can negatively impact public health and the environment.

Timken turns to neutrons to get its bearings on internal stresses

Bearings are used in many common applications such as wheels, drills, and even toys like the popular fidget spinner. Those applications and others like them rely on bearings to allow for smooth, efficient motion for millions of rotations.

NASA TV to Air International Space Station Crew Landing

Three residents of the International Space Station, including one NASA astronaut, are scheduled to wrap up their stay aboard the orbital laboratory Wednesday, Dec. 19.

Shrinking objects to the nanoscale

Researchers have invented a new way to fabricate nanoscale 3D objects of nearly any shape. They can also pattern the objects with a variety of useful materials, including metals, semiconducting quantum dots, and DNA.

Machine learning to speed chemical discoveries, reduce waste

Researchers have combined artificial neural networks with infrared thermal imaging to control and interpret chemical reactions with new precision and speed. Novel microreactors allow chemical discoveries to take place quickly and with far less environmental waste than standard large-scale reactions. The system can reduce the decision-making process about certain chemical manufacturing processes from one year to a matter of weeks, saving tons of chemical waste and energy in the process.

Tangled magnetic fields power cosmic particle accelerators

Magnetic field lines tangled like spaghetti in a bowl might be behind the most powerful particle accelerators in the universe. That's the result of a new computational study that simulated particle emissions from distant active galaxies.

How particles arrange themselves into complex structures

Complexity in nature, whether in chlorophyll or in living organisms, often results from self-assembly and is considered particularly robust. Compact clusters of elemental particles can be shown to be of practical relevance, and are found in atomic nuclei, nano particles or viruses. Researchers have decoded the structure and the process behind the formation of one class of such highly ordered clusters. Their findings have increased understanding of how structures are formed in clusters.

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