How fractals jam glassy materials

By Ashley Yeager, 13:34 PM April 24, 2014

Unlike molecules in a crystal lattice, the molecules in glass don’t have regular positions, even though glass is a solid. Scientists think that glass molecules don’t flow, as they would in a liquid, because the particles are caged by each other and don’t have enough energy to overcome a threshold known as the energy barrier, which is like a hill. Instead, the molecules stay in valleylike depressions.

But the energy landscape of glass molecules may not be as simple as hills and valleys, scienti...

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