Characterization Archives | The American Ceramic Society

Characterization

Achieving full density—a look at factors hindering densification of bioglass scaffolds

By Jonathon Foreman / September 17, 2019

Most bioglasses, especially the popular 45S5, form weak scaffolds prone to cracking because they do not sinter to full density. Researchers looked to understand the factors hindering densification.

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Two theories, one goal—new formula also describes heat flow in both crystals and glass

By Lisa McDonald / August 30, 2019

In May, a formula was published that could describe thermal transport in both crystals and glass. Now, a new formula by researchers in Italy and the United States based on a different mathematical framework can also model such thermal transport.

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Directly from glassy to crystal: Phase change material switches state without entering liquid phase

By Lisa McDonald / August 27, 2019

Phase change materials are an excellent way to store data—if you know how to effectively switch between the material’s glassy and crystal states. Researchers at the University of Arizona and RWTH Aachen University discovered unlike most glasses, the PCM Ge2Sb2Te5 can switch directly from glassy to crystal without entering the liquid phase.

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Cheers to sustainability—lifecycle analysis pits glass bottles against aluminum cans

By April Gocha / August 23, 2019

From an environmental sustainability standpoint, which is better: glass bottles or aluminum cans? Turns out, the answer is not so clear-cut.

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Set sail on the road to discovery: Chemical map charts course to hundreds of new nitrides

By Lisa McDonald / June 28, 2019

Exploratory synthesis of nitride materials can be a time-consuming and risky venture. A new map of ternary metal nitrides gives scientists a good idea of where to look for new nitrides.

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Two materials, one theory—unified thermal transport formula describes heat flow in both crystals and glass

By Lisa McDonald / June 14, 2019

Previously, two separate theories described heat transport in ordered and disordered materials. A new general theory by Swiss and Italian researchers describes thermal transport in both, as well as everything in between.

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Breakthroughs with boron nitride could enable more efficient electronics

By April Gocha / June 4, 2019

Recent research may enable integration of boron nitride into next-gen electronics. Researchers have proven boron nitride’s high thermal conductivity and integrated the material into a flexible yet efficient nanocomposite.

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Squishy when cold—Graphene foam retains elasticity at cryogenic temperatures

By Lisa McDonald / April 30, 2019

Researchers from Nankai and Rice universities found their 3D cross-linked graphene foam could retain its reversible and robust compressive elasticity at temperatures near absolute zero, a property not observed previously for any other bulk material.

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Robot uses capacitive sensors in soft hands to separate recyclable materials

By April Gocha / April 23, 2019

Researchers at MIT developed a robot that can effectively separate mixed recyclable materials, using two flexible silicone “hands” to feel the difference between paper, metal, and plastic.

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Predicting macroscale friction in clay-like materials using microscale calculations

By Lisa McDonald / April 12, 2019

Japanese researchers found they could explain macroscopic friction in muscovite using theoretical calculations of microscale frictional forces. They hope to develop a theory that can explain frictional strength across a broad range of clay and clay-like minerals.

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