Quantitative Polarized Light Imaging System (IMAGE)
Caption
Lead author Sijia Zhang using the research team's quantitative polarized light imaging system. Much like how polarized sunglasses work by blocking all light aligned at a particular angle, this system can show the orientations of collagen fibers in a ligament by measuring how much light they allow through. The researchers found that groups of neighboring fibers changing their orientations in tandem while being stretched prefigures the spots where failure eventually occurs.
Credit
University of Pennsylvania
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