"This adds to a body of work coming from a mechanical perspective that says what we're seeing is the playing out of physical laws," said Prof Ned Wingreen.
"This is a very complicated process involving growth and mechanics," said lead author Chenyi Fei, a graduate student in the Lewis-Sigler Institute. "To understand it, we built what we call a chemo-mechanical model. We take into account the nutrients and the nonuniform growth of the biofilm, and how those features translate into the mechanical forces or stresses that accumulate."
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