Graphene is widely regarded as a promising material for the fabrication of flexible electronic. Inks or dispersions of Graphene can be deposited on flexible substrates by large-scale coating techniques, such as inkjet printing and spray coating. However, inhomogeneity of the obtained conduction layers is one of the main issues developers are currently facing.

In a recent article, the role of surface morphology on the uniformity of deposited graphene ink layers has been studied in detail using Protemics' contactless THz microprobe technology to map the conduction properties over large scale samples. Graphene inspection results were obtained from a collaborative work including partners from Aachen University, AMO and Protemics.