Category Chemistry/Nanotechnology

Exploding and Weeping Ceramics Provide Path to New Shape-Shifting Material

Nanoscale study and local chemical analysis of a grain boundary of a (Zr0.9 Hf0.1 O2)0.775 (Y0.5 Nb0.5 O2)0.225 (weeping) sample prepared by FIB. The micrographs are HAADF-STEM and HAADF-HRSTEM images as well as high resolution EDX elemental maps of the sample. Atomic-resolution HAADF micrographs are raw images, showing no significant intensity variation along the grain boundary (GB). The high resolution EDX maps suggest no significant element segregation at the grain boundary.

Discovery could lead to improvements in medical devices and electronics. An international team of researchers from the University of Minnesota Twin Cities and Kiel University in Germany have discovered a path that could lead to shape-shifting ceramic materials...

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This Light-Powered Catalyst Mimics Photosynthesis

catalysis graphic
By mimicking photosynthesis, MIT researchers have designed a new type of photocatalyst that can absorb light and use it to help catalyze a variety of chemical reactions that would otherwise be difficult to perform.
Credits:Image: Courtesy of the researchers

The new molecule can improve the yield of reactions for generating pharmaceuticals and other useful compounds. By mimicking photosynthesis, the light-driven process that plants use to produce sugars, MIT researchers have designed a new type of photocatalyst that can absorb light and use it to drive a variety of chemical reactions.

The new type of catalyst, known as a biohybrid photocatalyst, contains a light-harvesting protein that absorbs light and transfers the energy to a metal-containing catalyst...

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New Scalable Method resolves materials joining in Solid-State Batteries

ORNL scientists developed a scalable, low-cost electrochemical pulse method to improve the contact between layers of materials in solid-state batteries, resolving a key challenge in energy-dense solid-state batteries. Credit: Andy Sproles/ORNL, U.S. Dept. of Energy

Scientists at the Department of Energy’s Oak Ridge National Laboratory have developed a scalable, low-cost method to improve the joining of materials in solid-state batteries, resolving one of the big challenges in the commercial development of safe, long-lived energy storage systems.

Solid-state batteries incorporate a safer, fast-charging architecture featuring a solid-state electrolyte versus the liquid electrolytes in today’s lithium-ion batteries...

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Healable carbon fiber composite offers path to long-lasting, sustainable materials

Aniruddh Vashisth holding a sample of a healable carbon fiber composite
ME Assistant Professor Aniruddh Vashisth holds a sample of a healable carbon fiber composite material that his team is studying. Photo by Andy Freeberg / University of Washington

Because of their high strength and light weight, carbon-fiber-based composite materials are gradually replacing metals for advancing all kinds of products and applications, from airplanes to wind turbines to golf clubs. But there’s a trade-off. Once damaged or compromised, the most commonly-used carbon fiber materials are nearly impossible to repair or recycle

In a paper posted this week in the journal Carbon, a research team that includes UW mechanical engineering Assistant Professor Aniruddh Vashisth describes a new type of carbon fiber reinforced material that is as strong and light as traditionally us...

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