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Archive for the ‘materials’ category: Page 240

Feb 6, 2019

MIT’s self-healing metal fixes tiny flaws before they can create massive problems

Posted by in category: materials

Circa 2013


When a material is damaged, you wouldn’t expect pulling it apart to suddenly make it less damaged. This counterintuitive effect is exactly what researchers at MIT observed in an experimental model recently, and it was so unexpected that the results had to be rechecked before anyone was ready to believe it. Astonishingly, it seems that under the right conditions, metal with small flaws and cracks can heal itself when tension is applied — if you pull it apart, it puts itself back together.

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Feb 6, 2019

Femtosecond laser pulses push spintronics and magnonics to the limit

Posted by in categories: materials, particle physics

An international team composed by scientists of Radboud University and the University Politecnico di Milano has realized the ultimate speed limit of the control of spins in a solid state magnetic material.

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Feb 5, 2019

How easy will it be to build a Moon base?

Posted by in categories: materials, space

Musk has yet to make a definite announcement about a Moon base. He has said we may need one just to get people fired up about Mars, and he is going to shoot someone around the Moon and back. I point this out because the first part of this article makes it seem like Musk has drawn up plans and announced them.


How can astronauts build a lunar base if traditional building materials are too heavy to load into a rocket?

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Feb 4, 2019

Mexican company converts avocado pits into completely biodegradable plastic

Posted by in category: materials

When you think of Mexico, you think of tequila and guacamole, says Scott Munguia. If he has his way, you might also be thinking of something else made from the avocado: plastic made from the seed.

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Feb 4, 2019

Visualizing the World’s Top Plastic Emitting Rivers

Posted by in category: materials

https://paper.li/e-1437691924#/


Every year, 8 million metric tons of plastic enters the world’s oceans – much of it through our river systems. See which rivers are polluting the most.

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Feb 2, 2019

The Moon might actually be made out of the same material as our home planet

Posted by in categories: materials, space

Samples collected nearly 50 years ago during Apollo, combined with experimental studies that mirror the conditions inside planetary bodies provide compelling evidence.

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Feb 2, 2019

An Arkansas Teen Helped Turn Tea Leaves and Molasses Into a Supercapacitor

Posted by in categories: food, materials

In the search for people working on cheaper supercapacitors, she found herself in the lab of Noureen Siraj, Ph.D., an assistant professor of chemistry at the University of Arkansas, Little Rock. One of Siraj’s students, Samantha Macchi, had already been working on such a project for about a year and a half, figuring out how to make supercapacitor electrodes from common materials like used tea leaves, molasses, and a basic kitchen microwave oven — humble beginnings for a high-tech device. Siraj and Macchi brought Bollimpalli onto the project to learn about the work, which she later presented at ISEF. Meanwhile, Macchi and Siraj published the resulting research in January in the journal Chemistry Select.

Bollimpalli was initially assigned to a different project in the lab, but when she found out about the work on supercapacitors, she asked to switch tasks. Siraj, who is used to having high school students learn about her team’s work, quickly obliged.

“She quickly learned all the protocols, and she actually was able to explain. She brought an understanding that is missing in a lot of the high school students,” Siraj tells Inverse. “She really is good at absorbing the information.” They worked together tirelessly to help Bollimpalli nail the presentation she would later give at ISEF.

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Jan 31, 2019

Is self-healing concrete technology the future of construction?

Posted by in categories: futurism, materials

Building cracks and deterioration are common points of concern for asset owners and managers alike, but a new technology may soon alleviate these industry issues.

Researchers at the University of Cambridge are using micro-encapsulation technologies developed by Dolomite Microfluidics to develop self-healing construction materials.

The university’s Department of Engineering’s Geotechnical and Environmental Research Group said last month that it is developing microcapsules containing ‘healing’ agents such as minerals, epoxy, or polyurethane which can be added to building materials to allow the self-repair of small cracks that develop over time.

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Jan 30, 2019

Groundbreaking new reusable adhesive works underwater

Posted by in categories: engineering, materials

Illinois researchers have introduced a new cutting-edge reusable adhesive that activates in seconds, works underwater, and is strong enough to deadlift 11 pounds: shape memory polymers (SMPs).

The team—associate professor in mechanical science and engineering Seok Kim, graduate student Jun Kyu Park, and former graduate student Jeffrey D. Eisenhaure (Ph. D. ME ‘17, now with Northrop Grumman)—has proved that SMPs can retain dry adhesion properties while submerged. Their study, “Reversible underwater dry adhesion of a shape memory polymer,” was recently published by the scientific journal Advanced Materials Interfaces.

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Jan 30, 2019

New materials could ‘drive wound healing’

Posted by in categories: biotech/medical, materials

Researchers have developed new bioinspired material that interacts with surrounding tissues to promote healing.

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