Brain bubbles: Researchers describe the dynamics of cavitation in soft porous material

A tiny bubble popping within a liquid seems more fanciful than traumatic. But millions of popping vapor bubbles can cause significant damage to rigid structures like boat propellers or bridge supports. Can you imagine the damage such bubbles could do to soft human tissues like the brain? During head impacts and concussions, vapor bubbles form and violently collapse, creating damage to human tissue. Purdue University fluid mechanics researchers are now one step closer to understanding these phenomena.