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A cooler approach to making new materials that can stand the heat

High-entropy alloys are a new class of alloys that are composed of four or more metallic elements in approximately equal amounts.

For example, conventional commercial aluminum alloys typically consist of more than 95 percent aluminum. Although they may contain other elements such as copper and magnesium, these are minor additions. In the case of a high-entropy alloy, however, the amounts of aluminum, copper, and magnesium would be nearly equal.

They’re an exciting group of materials because of their potential to exhibit properties not achievable with conventional alloys.

Interdisciplinary team examines social media’s role in framing facts, influencing behavior during COVID-19 pandemic

 
The onset of the COVID-19 pandemic coincided with an era in which people the world over have the technology to document and share their experiences with and perceptions around the virus.
 
“I was really moved by the personal storytelling I saw on social media,” says Haiyan Jia, an assistant professor of journalism and communication in Lehigh University’s College of Arts and Sciences. “At the same time, I saw how those experiences were reflecting very different realities.”

Why do self-driving cars crash?

Whether they are built by billionaires plagued by social media addictions, or long-standing corporations of the traditional automotive industry, self-driving vehicles are the future of moving people and stuff.

Lehigh ChBE researchers streamline synthesis of quantum dots

Quantum dots are nanoscale crystalline particles that act as semiconductors. When exposed to UV light, they emit energy in the form of light, and the size of the quantum dot determines the color it emits.

“So by tuning the particle’s size, you can essentially tune its optical properties,” says Mark Snyder, an associate professor of chemical and biomolecular engineering (ChBE) in Lehigh University’s P.C. Rossin College of Engineering and Applied Science. “Which makes them interesting materials to use in applications like bioimaging.”

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