Aluminum oxide crystal tested as a UV radiation sensor

Exposure to ultraviolet (UV) radiation is a risk factor for skin cancer and other diseases. The risk increases when sunlight, the natural source of UV radiation, is combined with artificial sources such as UV lamps for medical ...

New materials exhibit split personality

Julia Greer, professor of materials science, mechanics and medical engineering in Caltech's Division of Engineering and Applied Science, creates materials out of micro- and nano-scale building blocks that are arranged into ...

Researchers find new ways to harness wasted methane

The primary component of natural gas, methane, is itself a potent greenhouse gas. A recent study, affiliated with South Korea's Ulsan National Institute of Science and Technology (UNIST) has unveiled a high performance catalyst ...

Custom-made artificial mother-of-pearl

Natural mother-of-pearl, such as mussels, is one of the hardest, most stable and stiff natural materials. Researchers have always been fascinated by it. The structure of mother-of-pearl is exquisite under the electron microscope; ...

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Aluminium oxide

Aluminium oxide is an amphoteric oxide of aluminium with the chemical formula Al2O3. It is also commonly referred to as alumina, corundum, sapphire, ruby or aloxite in the mining, ceramic and materials science communities. It is produced by the Bayer process from bauxite. Its most significant use is in the production of aluminium metal, although it is also used as an abrasive due to its hardness and as a refractory material due to its high melting point.

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