DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Velcro-like hooks on the surface of a burdock seed pod (Arctium minus), coloured scanning electron micrograph (SEM). Arctium is a genus of biennial plants, commonly known as burdock or burweed, in the family Asteraceae. Budock seeds are dispersed by animals. Velcro was developed after a study of the burdock seed revealed curved, hooked seed hairs on its surface. This curved hook design was used in the development of Velcro. Magnification: x52 when shortest axis printed at 25 millimetres.
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