Archive for the ‘energy’ category: Page 273
May 16, 2019
Holographic imaging of electromagnetic fields using electron-light quantum interference
Posted by Quinn Sena in categories: encryption, energy, holograms, quantum physics
In conventional holography a photographic film can record the interference pattern of monochromatic light scattered from the object to be imaged with a reference beam of un-scattered light. Scientists can then illuminate the developed image with a replica of the reference beam to create a virtual image of the original object. Holography was originally proposed by the physicist Dennis Gabor in 1948 to improve the resolution of an electron microscope, demonstrated using light optics. A hologram can be formed by capturing the phase and amplitude distribution of a signal by superimposing it with a known reference. The original concept was followed by holography with electrons, and after the invention of lasers optical holography became a popular technique for 3D imaging macroscopic objects, information encryption and microscopy imaging.
However, extending holograms to the ultrafast domain currently remains a challenge with electrons, although developing the technique would allow the highest possible combined spatiotemporal resolution for advanced imaging applications in condensed matter physics. In a recent study now published in Science Advances, Ivan Madan and an interdisciplinary research team in the departments of Ultrafast Microscopy and Electron Scattering, Physics, Science and Technology in Switzerland, the U.K. and Spain, detailed the development of a hologram using local electromagnetic fields. The scientists obtained the electromagnetic holograms with combined attosecond/nanometer resolution in an ultrafast transmission electron microscope (UEM).
In the new method, the scientists relied on electromagnetic fields to split an electron wave function in a quantum coherent superposition of different energy states. The technique deviated from the conventional method, where the signal of interest and reference spatially separated and recombined to reconstruct the amplitude and phase of a signal of interest to subsequently form a hologram. The principle can be extended to any kind of detection configuration involving a periodic signal capable of undergoing interference, including sound waves, X-rays or femtosecond pulse waveforms.
May 15, 2019
Nawa’s carbon nanotube ultra-capacitors are going into mass production
Posted by Klaus Baldauf in categories: energy, nanotechnology, transportation
Charging almost instantly and offering massive power density, Nawa’s innovative ultracapacitors are ready to make a mark across industries from automotive to power tools and aviation. And after raising more than US$10 million, this French company is going into mass production.
S4 Energy Solutions cofounder Jeff Surma has one way to solve our garbage mess: Atomize it with an 18,000-degree plasma arc.
May 13, 2019
NASA Is Working on Electric Planes Powered by Cryogenic Hydrogen
Posted by Quinn Sena in categories: energy, transportation
To clean up the aviation industry, NASA-funded scientists are working to develop an all-electric aircraft powered by cryogenically-liquified hydrogen fuel.
The University of Illinois scientists behind the project nailed down $6 million over three years from NASA to develop the tech, according to a university-published press release — tech that could, if the project pans out, revolutionize the aviation industry.
May 12, 2019
The Entropic Enigma of Ouroboros’ Metamorphosis
Posted by Alex Vikoulov in categories: energy, neuroscience
Antonin Tuynman: Where we see complexity, we see high informational content, organised in a complex way which often involves hierarchical levels. The diversity in highly complex systems might at first glance seem a chaotic mixed bag and hodgepodge; it is not. The diversified apparent mishmash is not a sign of apparent chaos, where you’d expect high thermodynamic entropy. It is not the stifling rigidity of a perfect order either. Complexity is an intricate architecture of stacked and intertwined hierarchical levels, with multifarious information exchanges between them. In fact Complexity selects the best of Order and Chaos. This seemingly ordered chaos or chaotic order, brings us the gift of the ability to ever introduce new variations. An ability to regenerate, copy, multiply and spread itself. An ability to induce ever changing patterns to adapt itself to the circumstances. An ability of recursive self-modification. Also knowhttps://www.ecstadelic.net/top-stories/the-entropic-enigma-o…amorphosis #OuroborosCode
The mighty worm Ouroboros had lost trace of its path and didn’t know its whereabouts. Nor did it know where it was going. In fact it didn’t know anything anymore, as it had drunk from the Lethe, Hades’ river flowing though Hypnos’ caves. Drinking from Lethe, forgetfulness and daughter of Eris, Goddess of Strife and Discord, made one lose all memory of past existence.
Disoriented Ouroboros started turning, and by continuing to turn, it finally found a trail of what seemed to be a path. A tasty object lay there, waiting to be eaten, and as Ouroboros bit it, a painful jolt of energy shot through its body awakening all the memories it had forgotten. Abruptly Ouroboros awoke from its dreamtime of daze and stupor and recognized itself as the ever effulgent Consciousness, Creator of Macrocosm and Microcosm.
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May 10, 2019
China charts a path into European science
Posted by Derick Lee in categories: energy, science
The promise of investments in infrastructure and research appeals to many of the economically challenged nations in central and eastern Europe. These countries have battled brain drain, persistent corruption and lack of support for research and development. In this region, Chinese companies are — among other projects — building a bridge to connect two parts of Croatia, although this project stalled in 2012, in part because of funding problems. They are also financing the construction of an energy-efficient ‘smart city’ near the Bulgarian capital of Sofia, which would be the first such development in Europe, according to promoters.
As the Belt and Road Initiative spreads to central and eastern Europe, China’s investments in research and technology are raising concerns in the West.
By Antoaneta Roussi
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May 9, 2019
Google’s gesture-controlled sensor has been cleared by the FCC
Posted by Quinn Sena in categories: energy, space
Google has won approval from US regulators to create sensors that can be triggered with hand gestures, dubbed “Project Soli,” Reuters reports.
The news: Google started work on Soli in 2015 but hit a roadblock because the sensors were required to operate at lower power levels than the company planned. These restrictions are in place to stop new products from interfering with other (more important) technologies—in this case radio astronomy and a satellite service. Now the US Federal Communications Commission has granted Google a waiver to let it operate Soli sensors at higher power levels, between 57 and 64 gigahertz. The FCC said this will “serve the public interest.”
How it works: The sensors use radar to capture motion in three-dimensional space. It means users can press invisible buttons or use a virtual dial, for example. The radar signal can penetrate fabrics, meaning it could work through a pocket or backpack.
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May 9, 2019
Reversible chemistry clears path for safer batteries
Posted by Quinn Sena in categories: chemistry, energy, military
Researchers at the University of Maryland (UMD) and US Army Research Lab (ARL) have taken a critical step on the path to high energy batteries by improving their water-in-salt battery with a new type of chemical transformation of the cathode that creates a reversible solid salt layer, a phenomenon yet unknown in the field of water-based batteries.
Building on their previous discoveries of the water-in-salt electrolytes reported in Science in 2015, the researchers added a new cathode. This new cathode material, lacking transition metal, operates at an average potential of 4.2 volts with excellent cycling stability, and delivers an unprecedented energy density comparable, or perhaps higher than, non-aqueous Li-ion batteries. The authors report their work on May 9 in the journal Nature.
“The University of Maryland and ARL research has produced the most creative new battery chemistry I have seen in at least 10 years,” said Prof. Jeffrey Dahn of Dalhousie University in Canada, an expert in the field not affiliated with the research. “However, it remains to be seen if a practical device with long lifetime can be created.”
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May 9, 2019
Designer Julia Daviy Introduces Her Digitally Customizable 3D Printed Skirt
Posted by Quinn Sena in categories: 3D printing, education, energy, information science, sustainability
3D printing is moving ever closer to gaining a true home in mainstream commercial applications, thanks to the impact the technology is having on consumer fashion products such as jewelry, footwear, and clothing. While 3D printed fashion was still considered to be more of a novelty a few years ago, efforts have been increasing to make it more common – even in the classroom. Additionally, the technology is helping to usher in a more sustainable and eco-friendly way of manufacturing garments…and designer Julia Daviy is helping to lead the charge.
In addition to designing clothes, Daviy is also an ecologist and clean technology industry manager, and uses 3D printing to make cruelty-free, zero-waste clothing. She believes that the technology will change how the world produces clothing, especially when it comes to some of the more problematic issues of garment manufacturing, such as animal exploitation, chemical pollution, energy consumption, and material waste.
“Our goal was never to demonstrate the viability of 3D printed clothing and leave things at that. We’ll have succeeded when beautiful, comfortable, ethically manufactured and environmentally friendly clothes are the standard,” Daviy stated. “The innovations we’ve made on the production and marketing side of the equation are just as important as the technological breakthroughs that have gotten us this far.”
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