DIAGNOSTIC PROBE SUITABLE FOR ASCORBIC ACID DETECTION
A diagnostic probe or chemical sensor includes a solid substrate or support material carrying copper-gold alloy nanoparticles. The probe or sensor is particularly suitable for sensing the presence of ascorbic acid and a method of detecting ascorbic acid in a sample is thus also disclosed. The invention extends to a method of manufacturing a diagnostic probe or chemical sensor which includes forming a liquid admixture that includes copper-gold alloy nanoparticles and a substrate or support material, and solidifying the liquid, nanoparticle-containing admixture into a solid body.