POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY
Coloured scanning electron micrograph (SEM) of nylon hooks. It is used as a common fastener on clothes and shoes. It is a nylon material manufactured in two separate parts; one with a hooked surface (as seen here) and the other with a smooth surface made up of a series of loops. The loops are loosely woven strands in an otherwise tight weave. The hooks are loops woven into the fabric and then cut. When the two surfaces are brought together they form a strong bond, which can be peeled apart. Magnification: x27.5 at 6x4.
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