A new way to check the quality of nanomaterials like graphene has emerged from a team at the University of Sussex.
Graphene and nanomaterials have been touted as wonder materials, and they are proving invaluable in all sorts of applications, such as in the automotive and aerospace industries, where heavy metals are replaced with lighter but equally strong composite materials. Nanomaterial quality therefore matters a great deal, but standardisation and quality checking have eluded the industry.
The Sussex team have developed a technique that gives detailed information about the size and thickness of graphene particles. It uses a non-destructive, laser-based method for looking at the particles as a whole, and lets them quickly build a detailed picture of the distribution of particles in a given material. Their paper "Raman Metrics for Molybdenum Disulfide and Graphene Enable Statistical Mapping of Nanosheet Populations" is published in the journal 'Chemistry of Materials'.
Dr Matt Large, who led the discovery in the School of Mathematical and Physical Sciences at the University of Sussex, said:
"Standards for measurement are a really critical underpinning of modern economies. It really comes down to one simple question; how do you know you got what you paid for?
"At the moment the graphene industry is a bit of a wild frontier; it's very difficult to compare different products because there is no agreed way of measuring them. That's where studies like ours come in.
Read More at https://www.sciencedaily.com/releases/2020/08/200812144100.htm