A highly sensitive chemical sensor based on Raman spectroscopy and using nitrogen-doped graphene as a substrate was developed by an international team of researchers. In this case, doping refers to ...

Graphene is a two-dimensional, one-atom-thick hexagonally organized material composed of sp2 carbon networks with strong covalent bonds. As graphene absorbs only 2.3 percent of incident light, it is ...

XPS is a very versatile method that has found extensive use in numerous application areas, from aerospace materials to contact lenses. XPS is unique in that it can quantify the chemical and elemental ...