Memory foam, SEM

Memory foam, SEM

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Credit: DENNIS KUNKEL MICROSCOPY/SCIENCE PHOTO LIBRARY

Caption: Coloured scanning electron micrograph (SEM) of Memory foam (open cell foam). Solid foams can be produced as closed-cell foam or open-cell foam. In closed-cell foam, gas forms discrete pockets, each completely surrounded by the solid material. In an open-cell foam, the gas pockets connect with each other. Open cell foam is often used for pillows, mattress coverings and for various cushioned devices for medical purposes. The initial memory foam, known as T-foam, off gassed too much for use in a closed environment, especially by the space industry. Memory foam is an open cell foam (cells of the foam have holes in them) that compresses fully and the air pressure is spread to adjoining cells thus causing the foam to slowly revert to its original form. Magnification: x20 when shortest axis printed at 25 millimetres.

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Keywords: 24210b, bath, cell, colored, coloured, electron, false-colored, false-coloured, foam, foams, low, low-resilience, manmade, memory, micrograph, nasa, open, open-cell, pad, pedic, pillow, polyurethane, resilience, scanning, sem, solid, sponge, temper, viscoelastic

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