Metallic glasses, also known as amorphous metals or glassy metals, have an atomic structure that is non-crystalline and disordered like liquids. They are produced by rapidly cooling molten metal alloys to below the glass transition temperature before crystals can form. This gives metallic glasses properties unlike conventional metals, such as high strength and elasticity. Some key applications of metallic glasses include use in sports equipment due to their formability and in electronic device casings due to their corrosion resistance.