Penn molecular scientists develop color-changing stress sensor


Related images(click to enlarge) It is helpful — even life-saving — to have a warning sign before a structural system fails, but, when the system is only a few nanometers in size, having a sign…

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The future of inks, paints and coatings takes shape


Related images(click to enlarge) If you’ve ever spilled a drop of coffee on a surface, you might have noticed the curious way the color concentrates at the edges when the coffee dries. This is known…

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