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Jan 19, 2021

Tracking a Single Ion in an Ultracold Gas

Posted by in categories: particle physics, quantum physics

Direct observation of an ion moving through a Bose-Einstein condensate identifies the effect of ion-atom collisions on charge transport in an ultracold gas.

When you expose mobile electrical charges in a medium to an electrical field, current flows. The charges are accelerated by the field, but collisions within the medium give rise to a kind of friction effect, which limits the velocity of the charges and thus the current. This universal concept, called diffusive transport, describes a large range of media, such as metallic conductors, electrolytic solutions, and gaseous plasmas. But in a quantum system, such as a superconductor or a superfluid, other collective effects can influence the transport through the medium. Now, a group led by Florian Meinert and Tilman Pfau both of the University of Stuttgart, Germany, have carried out charge-transport experiments with a single ion traversing a Bose-Einstein condensate (BEC), which is a quantum gas of cold neutral atoms [1]. The precise tracking of the ion shows that the transport is diffusive and reveals the character of the ion-atom collisions.

Jan 19, 2021

Research establishes antibiotic potential for cannabis molecule

Posted by in category: biotech/medical

Synthetic cannabidiol, better known as CBD, has been shown for the first time to kill the bacteria responsible for gonorrhea, meningitis and legionnaires disease.

The between The University of Queensland and Botanix Pharmaceuticals Limited could lead to the first new class of for in 60 years.

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Jan 19, 2021

TSMC gears up for mass production of 3-nm chips for high-end devices

Posted by in categories: computing, mobile phones

Taiwan contract chip maker TSMC will begin ‘risk production’ of its 3-nanometre process this year, a technology advance that will deliver higher performance and longer battery life for 5G smartphones and other high-end electronics products.

Jan 19, 2021

How SpaceX, Blue Origin, and Virgin Galactic plan on taking you to space

Posted by in categories: Elon Musk, space travel

Billionaires Elon Musk, Jeff Bezos, and Richard Branson all want to send private citizens to space. Their respective companies, SpaceX, Blue Origin, and Virgin Galactic are dedicated to making space travel and space tourism more accessible.

Narrator: SpaceX, Blue Origin, and Virgin Galactic are in a modern space race. Similar to when the United States and the Soviet Union competed to get astronauts on the moon, these billionaire-run companies are racing to bring people like you and me to space. But how will they do it?

Let’s start with Blue Origin, the passion project of Amazon CEO Jeff Bezos. Blue Origin’s focus is on commercial space flight, or space tourism. It plans to shoot a booster rocket with an attached passenger capsule to 60 miles above the surface into sub-orbital space. At the top of the rocket’s arch, the capsule will detach, and for about four minutes, passengers will experience weightlessness. They’ll be allowed to unbuckle their seat belts and float around the cabin, looking out the window at the curvature of the Earth. The capsule will then start to fall back into the atmosphere, and parachutes will deploy to bring it down slowly. The whole trip only lasts about 11 minutes. A ticket on Blue Origin’s New Shepard will likely cost more than $200000. That’s over $18000 a minute. Blue Origin has tested the New Shepard rocket nine times, and the company still hopes to send civilians into space in 2018.

Jan 19, 2021

This Indian designer is turning waste PPE into mattresses for COVID-19 patients

Posted by in category: biotech/medical

PPE might be even more vital than you think. 🔎 Learn more about how we can tackle PPE pollution: https://buff.ly/3gHyjYV # DavosAgenda Shayya.

Jan 19, 2021

La Chine présente son train ‘maglev’ qui pourrait atteindre les 800 km/h

Posted by in category: transportation

Les chercheurs de l’Université Jiaotong du Sud-Ouest ont dévoilé mercredi, à Chengdu, un nouveau prototype de train à sustentation magnétique, également appelé ‘maglev’ (magnetic levitation). Selon ses concepteurs, l’engin pourra, à terme, rivaliser en vitesse pure avec le transport aérien.

Avec le Transrapid de Shanghai, dont la vitesse maximale est de 430 km/h, la Chine dispose déjà du service commercial ‘maglev’ le plus rapide au monde. Mais avec le nouveau prototype de train dévoilé cette semaine, l’empire du Milieu espère bien disposer, dans un futur proche, d’un moyen de transport qui ira jusqu’à près de deux fois plus vite.

Supraconductivité

Continue reading “La Chine présente son train ‘maglev’ qui pourrait atteindre les 800 km/h” »

Jan 19, 2021

BladeBUG Robots Clean Massive Wind Turbine Blades

Posted by in categories: robotics/AI, sustainability

There were the cleaners, with large padded feet, who were apparently polishing their way the whole length…’ — Arthur C. Clarke, 1972.

IceBot Antarctic (Planetary?) Robotic Explorers Made Of Ice ‘Some will combine in place to form more complicated structures, like excavators or centipedes.’ — Greg Bear, 2015.

Continue reading “BladeBUG Robots Clean Massive Wind Turbine Blades” »

Jan 19, 2021

IceBot Antarctic (Planetary?) Robotic Explorers Made Of Ice

Posted by in categories: robotics/AI, sustainability

BladeBUG Robots Clean Massive Wind Turbine Blades ‘There were the cleaners, with large padded feet, who were apparently polishing their way the whole length…’ — Arthur C. Clarke, 1972.

IceBot Antarctic (Planetary?) Robotic Explorers Made Of Ice ‘Some will combine in place to form more complicated structures, like excavators or centipedes.’ — Greg Bear, 2015.

Continue reading “IceBot Antarctic (Planetary?) Robotic Explorers Made Of Ice” »

Jan 19, 2021

Is resurrection possible? Researchers catalogue the ways science may achieve it

Posted by in categories: cryonics, life extension, science, time travel, transhumanism

From cryonics to time travel, here are some of the (highly speculative) methods that might someday be used to bring people back to life.

Jan 19, 2021

WSR: A new Wi-Fi-based system for collaborative robotics

Posted by in categories: internet, robotics/AI

Researchers at Harvard University have recently devised a system based on Wi-Fi sensing that could enhance the collaboration between robots operating in unmapped environments. This system, presented in a paper pre-published on arXiv, can essentially emulate antenna arrays in the air as a robot moves freely in a 2-D or 3D environment.

“The main goal of our paper was to leverage arbitrary 3D trajectories for a (UAV or UGV) equipped with an on-board estimation sensor,” Ninad Jadhav, one of the researchers who carried out the study, told TechXplore. “This allows a Wi-Fi-signal-receiving robot to estimate the spatial direction (in azimuth and elevation) of other neighboring robots by capturing all the wireless signal paths traveling between the transmitting and receiving robot (which we call AOA profile). Additionally, we also characterized how the trajectory shape impacts the AOA profile using Cramer Rao bound.”

In their previous studies, Jadhav and his colleagues focused on robot collaboration scenarios in which the robots followed 2-D trajectories with a limited set of geometries (e.g., linear or curved). The new system they created, on the other hand, is applicable to scenarios where robots are moving freely, following a wider range of trajectories.