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Archive for the ‘materials’ category: Page 205

May 7, 2020

Alloy clear for use in high-temperature reactors

Posted by in categories: materials, nuclear energy

Alloy 617 — a combination of nickel, chromium, cobalt and molybdenum — has been approved by the American Society of Mechanical Engineers (ASME) for inclusion in its Boiler and Pressure Vessel Code. This means the alloy, which was tested by Idaho National Laboratory (INL), can be used in proposed molten salt, high-temperature, gas-cooled or sodium reactors. It is the first new material to be added to the Code in 30 years.

The Boiler and Pressure Vessel Code lays out design rules for how much stress is acceptable and specifies the materials that can be used for power plant construction, including in nuclear power plants. Adhering to these specifications ensures component safety and performance.

INL spent 12 years qualifying Alloy 617, with a USD15 million investment from the US Department of Energy. A team at INL, in collaboration with groups at Argonne National Laboratory and Oak Ridge National Laboratory, as well as industry consultants and international partners, has now received approval from ASME for the alloy’s inclusion in the Code. Designers working on new high-temperature nuclear power plant concepts now have more options when it comes to component construction materials.

May 7, 2020

Russian ‘Superman suit’ protects soldiers from explosions, fire

Posted by in categories: materials, military

Russian scientists have unveiled a “Superman suit” they claim lets the wearer walk through fire and grenade blasts unscathed.

Vladimir Putin’s military says the suit is made of a heat-resistant “aramid” type material that can withstand half a minute of direct flame contact.

The heatproof suit, part of the country’s Ratnik program is expected to be ready for use by 2020.

May 7, 2020

Laser-Propulsion of Graphene Sails in Microgravity

Posted by in categories: materials, space travel

Graphene light sail of 3mm in diameter with a mass of 0.25 mg ‘sets sail’ when pointed with a 1W laser. The prototype has a graphene micromembrane design that reduces the overall mass while keeping functional the complete area of the sail. Credit: Dr. Santiago Jose Cartamil-Bueno.

Overseas exploration and trade during the Age of Discovery (15th-17th centuries) were possible by sail technology, and deep-space exploration will require the same for the coming Age of NewSpace. This time, however, the new sails shall move with light instead of wind, for which these light sails need to be extremely large, thin, lightweight, reflective, and strong.

In a light-hearted leap for humankind, ESA-backed researchers demonstrate the laser-propulsion of graphene sails in microgravity.

May 7, 2020

Guest Essay: Towards A New Posthuman Ontology – The Anti-Anthropocentrism of Ghost in the Shell 2: Innocence

Posted by in category: materials

https://paper.li/e-1437691924


From the editor: So far, the primary purpose of this site has been to serve as a “central point of information about anime and manga studies”, and a collection of resources that would be useful to the anime and manga studies community. However, I also gladly welcome new material, such as actual original commentary on anime/manga. If you would like to contribute an essay on any topic related to anime/manga, whether commentary or original research, please feel free to contact me.

The first such essay that I am happy to feature is “Towards a New Posthuman Ontology – The Anti-Anthropocentrism of Ghost in the Shell 2: Innocence”.

Continue reading “Guest Essay: Towards A New Posthuman Ontology – The Anti-Anthropocentrism of Ghost in the Shell 2: Innocence” »

May 5, 2020

Researchers demonstrate pattern recognition using magnonic holographic memory device

Posted by in categories: computing, materials

Circa 2015


Researchers at the University of California, Riverside Bourns College of Engineering and the Russian Academy of Sciences have successfully demonstrated pattern recognition using a magnonic holographic memory device, a development that could greatly improve speech and image recognition hardware.

Pattern recognition focuses on finding patterns and regularities in data. The uniqueness of the demonstrated work is that the input patterns are encoded into the phases of the input spin waves.

Continue reading “Researchers demonstrate pattern recognition using magnonic holographic memory device” »

May 5, 2020

How a mycologist is making ‘living’ bricks out of mushrooms that are stronger than concrete

Posted by in categories: materials, sustainability

Circa 2017 o.,o.


Philip Ross is an artist and lecturer at Stanford University who focuses on an unlikely sustainable design element: mushrooms. After years of growing mushrooms, Ross has learned that there’s far more than meets the eye to mycelium — the extensive and tangled network of rootlike fibers that grow beneath the ground. According to our fungus expert, when left to dry the mycelium can become an excellent raw material for various constructions. For instance, Ross used the mycelium to fashion bricks out of.

Among its many properties, the mycelium bricks are:

May 5, 2020

Environmentally friendly ‘living concrete’ capable of self-healing

Posted by in categories: biological, materials

Researchers said this building material has structural load-bearing function, is capable of self-healing and is more environmentally friendly than concrete – which is the second most-consumed material on Earth after water.

The team from the University of Colorado Boulder believe their work paves the way for future building structures that could “heal their own cracks, suck up dangerous toxins from the air or even glow on command”.

Wil Srubar, who heads the Living Materials Laboratory at the University of Colorado Boulder and is one of the study authors, said: “We already use biological materials in our buildings, like wood, but those materials are no longer alive.

May 4, 2020

New Material Finally Makes It Into the Almighty Nuclear Code

Posted by in categories: materials, nuclear energy

Scientists working at Idaho National Laboratory (INL) have announced the approval of a new high-temperature metal after 12 years and a $15 million Department of Energy investment. Alloy 617, a “combination of nickel, chromium, cobalt and molybdenum,” is tolerant and strong at temperatures of more than 1,700 degrees Fahrenheit. The scientists say this means it could be used in existing high temperature nuclear facilities as well as cutting-edge applications like molten salt reactors.

For any new nuclear plant material, making the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code is like qualifying for the Olympics. Alloy 617 is the first new material to get into “The Code” in 30 years.

May 1, 2020

Nanoarchitected metamaterial with material achieves the theoretic limits of stiffness and strength

Posted by in categories: materials, space travel

Question: When you’ve designed the world’s most efficient metamaterial, one that could change the way cars, planes and even space exploration vehicles are built, is mostly air yet reaches the theoretical bounds for stiffness and strength and can equally resist forces coming from any direction, what do you do next?

Answer: You break it.

At least, that’s what a team of material scientists including Jonathan Berger of UC Santa Barbara and Jens Bauer of UC Irvine did. Their goal? To learn what boundaries could be pushed with a novel metamaterial called plate-nanolattice. The research findings are published in a paper in the journal Nature Communications (“Plate-nanolattices at the theoretical limit of stiffness and strength”).

Apr 28, 2020

Kondo cloud seen at last

Posted by in category: materials

New observations could boost understanding of multiple-impurity systems such as Kondo lattices, spin glasses and high transition-temperature superconductors.