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Aug 17, 2021

This Guy Didn’t Want to Get a Haircut in Public, So He Built a Robot Barber

Posted by in category: robotics/AI

Circa 2020 o.o

While some states have partially reopened and loosened restrictions on barber shops and hair salons, not everyone is ready to head out in public for a haircut just yet. That means many people around the world are still sporting shaggy quarantine cuts.

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Aug 17, 2021

3D Printed Solid-State Battery Rivals Lithium-Ion

Posted by in category: futurism

But start-up Sakuu is tight-lipped on the details.

Aug 17, 2021

Ripples in Saturn’s rings reveal the planet’s giant, slushy core

Posted by in category: space

Saturn’s core is an unexpectedly immense mixture of ice, rock, and gas, surprising scientists who are trying to figure out how the planet formed and evolved to the enigmatic world we see today.

Hidden inside the solar system’s god of plenty is an unexpected bounty: Saturn’s mammoth core, spanning up to 60 percent of the planet’s width. The newly measured core, revealed through subtle waves in Saturn’s rings, appears to be ice, rock, and gas, blended into a soupy mass with blurry edges.

“It’s huge,” says Chris Mankovich of the California Institute of Technology, one of the authors of a new study describing Saturn’s core in the journal Nature Astronomy. “It’s definitely not something we expected to find.”

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Aug 17, 2021

Table-top electron camera catches ultrafast dynamics of matter

Posted by in categories: electronics, particle physics

Scientists at DESY have built a compact electron camera that can capture the inner, ultrafast dynamics of matter. The system shoots short bunches of electrons at a sample to take snapshots of its current inner structure. It is the first such electron diffractometer that uses Terahertz radiation for pulse compression. The developer team around DESY scientists Dongfang Zhang and Franz Kärtner from the Center for Free-Electron Laser Science CFEL validated their Terahertz-enhanced ultrafast electron diffractometer with the investigation of a silicon sample and present their work in the first issue of the journal Ultrafast Science, a new title in the Science group of scientific journals.

Electron diffraction is one way to investigate the inner structure of matter. However, it does not image the structure directly. Instead, when the electrons hit or traverse a solid sample, they are deflected in a systematic way by the electrons in the solid’s inner lattice. From the pattern of this diffraction, recorded on a detector, the internal lattice structure of the solid can be calculated. To detect dynamic changes in this inner structure, short bunches of sufficiently bright electrons have to be used. “The shorter the bunch, the faster the exposure time,” says Zhang, who is now a professor at Shanghai Jiao Tong University. “Typically, ultrafast electron diffraction (UED) uses bunch lengths, or exposure times, of some 100 femtoseconds, which is 0.1 trillionths of a second.”

Such short electron bunches can be routinely produced with high quality by state-of-the-art particle accelerators. However, these machines are often large and bulky, partly due to the radio frequency radiation used to power them, which operates in the Gigahertz band. The wavelength of the radiation sets the size for the whole device. The DESY team is now using Terahertz radiation instead with roughly a hundred times shorter wavelengths. “This basically means, the accelerator components, here a bunch compressor, can be a hundred times smaller, too,” explains Kärtner, who is also a professor and a member of the cluster of excellence “CUI: Advanced Imaging of Matter” at the University of Hamburg.

Aug 17, 2021

New clean energy tech extracts twice the power from ocean waves

Posted by in category: energy

Researchers have developed prototype technology that can double the power harvested from ocean waves, in an advance that could finally make wave energy a viable renewable alternative.

The untapped potential of ocean wave is vast—it has been estimated that the power of coastal waves around the world each year is equivalent to annual global electricity production.

But the challenges of developing technologies that can efficiently extract that natural power and withstand the harsh ocean environment have kept wave energy stuck at experimental stage.

Aug 17, 2021

What AI researchers can learn from the self-assembling brain

Posted by in categories: biotech/medical, genetics, robotics/AI

But one idea that hasn’t gotten enough attention from the AI community is how the brain creates itself, argues Peter Robin Hiesinger, Professor of Neurobiology at the Free University of Berlin (Freie Universität Berlin).

In his book The Self-Assembling Brain, Hiesinger suggests that instead of looking at the brain from an endpoint perspective, we should study how information encoded in the genome is transformed to become the brain as we grow. This line of study might help discover new ideas and directions of research for the AI community.

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Aug 17, 2021

SpaceX Mechazilla: how Starship’s companion will make the Mars city possible

Posted by in categories: Elon Musk, space travel

SpaceX CEO Elon Musk has plans for a giant orbital arm that he claimed resembles a character from Godzilla.

Aug 17, 2021

Multiple supernovas may have implanted our solar system with the seeds of planets

Posted by in categories: cosmology, materials

A nearby star-forming region may explain the mystery of tiny grains from beyond the solar system.

Aug 17, 2021

Deepmind Introduces PonderNet, A New AI Algorithm That Allows Artificial Neural Networks To Learn To “Think For A While” Before Answering

Posted by in categories: information science, robotics/AI

Artificial intelligence, machine learning, data science.

Aug 17, 2021

Rocket Relaunches Gene Therapy Program as FDA Lifts Clinical Hold

Posted by in category: biotech/medical

New gene therapy in trials for Danon disease.

“The only available treatment option for Danon disease is a heart transplant. Currently, there are no specific therapies available for the treatment of Danon disease.”

The U.S. Food and Drug Administration (FDA) lifted the clinical hold it placed on Rocket Pharmaceuticals’ experimental gene therapy for Danon disease. Patient enrollment in the Phase I study will resume, the company announced this morning.

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