The research team, led by Henry Tuller, a professor of materials sciences and engineering, designed a sensor to study gases in diesel exhaust by depositing layers of barium carbonate
on a quartz chip.
(BaCO3), also known as witherite, is a chemical compound used in used in the production of television glass, glazes, enamel, ceramics and electroceramics, rat poison, bricks, and cement.
Lines covered in the deal include salts, sulphur (except sublimed, precipitated and colloidal sulphur), natural graphite, quartz, silica and quartz sands, kaolin or other kaolinitic clays, bentonite, decolourising earths and Fuller's earth, fire-clay, andalusite, mullite, chamotte, microdol, natural calcium phosphates, natural barium sulphate, natural barium carbonate
, gypsum, white asbestos, talc, natural arsenite, strontianite (not stronitium oxide), natural cryolite and chiolite, fluorspar, vermiculite, perlite and chlorites (unexpanded), and others.