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Melissa Pappas

As seen in: MSN, The Conversation, upenn.edu, Phys.org, Medical Xpress, New Atlas, Scroll.in, Tech Xplore, SciTechDaily, Nanowerk LLC and
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Articles

How sea stars build materials that can see

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By Melissa Pappas, Gaby Clark Verified, Andrew Zinin Verified
| Phys.org Verified
The sea star, Protoreaster nodosus, is commonly known as the horned sea star or the chocolate chip sea star and is found in the shallow waters of the Indo-Pacific region. Credit: Liuni Chen When engineers think about protective materials, like those used in packaging and support, they usually think about strength, stiffness and durability. But what if those same materials could also sense their external environment?
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Bioengineers explore how tumor mechanics and tiny messengers could shape the future of cancer research

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By Melissa Pappas, Sadie Harley, Robert Egan Verified
| Phys.org Verified
When Ph.D. student Kshitiz Parihar began combing through dozens of research papers on two seemingly different topics—tumor mechanics and extracellular vesicles, tiny packages of proteins and genetic material secreted by cells—he noticed something surprising: the two fields were speaking to each other. Together with his advisor, Ravi Radhakrishnan, Professor of Bioengineering and Chemical Biomolecular Engineering and Herman P.
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Scientists develop model to predict force-driven chemical reactions with greater accuracy

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By Melissa Pappas, Sadie Harley, Andrew Zinin Verified
| Phys.org Verified
When asked to think of a chemical reaction, you might picture bubbling liquids in a beaker, or maybe applying heat to a mixture until something transforms. But some of the most important reactions in nature and industry don't need heat or solvents. Instead, they need force. Mechanochemistry is where physical pressure or stress triggers chemical reactions. Imagine molecules being rammed together like bumper cars, or shaken up in a giant cocktail shaker.
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