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Hydrogels

News Hydrogels

  • Bacteria and sand engineered into living concrete

    Cement and concrete haven't changed much as technology in over a hundred years, but researchers in Colorado are revolutionizing building materials by literally bringing them to life. The method developed, presented January 15 in the journal Matter, combines sand and bacteria to build a living materi more

  • Bio-inspired hydrogel can rapidly switch to rigid plastic

    A new material that stiffens 1,800-fold when exposed to heat could protect motorcyclists and racecar drivers during accidents. Hokkaido University researchers have developed a hydrogel that does the opposite of what polymer-based materials, like plastic bottles, normally do: their material hardens w more

  • A chameleon-inspired smart skin changes color in the sun

    Some creatures, such as chameleons and neon tetra fish, can alter their colors to camouflage themselves, attract a mate or intimidate predators. Scientists have tried to replicate these abilities to make artificial "smart skins," but so far the materials haven't been robust. Now, researchers reporti more

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Definition

Hydrogel

Hydrogel Hydrogel is a network of polymer chains that are water-insoluble, sometimes found as a colloid al gel in which water is the dispersion medium. Hydrogels are superabsorbent (they can contain over 99% water ) natural or synthetic polyme ... more

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