Sensors Journal has hosted a Special Issue on "Wireless Sensing and Intelligent Reflective Surfaces" with Special Editor Dr Spyros Dakalakis from Herriot-Watt University. 

2D-nanomaterials (2DNM) including graphene family nanomaterials (GFNs) and transition metal dichalcogenides (TMDs) are being researched and developed for commercial use, due to their wide spectrum of applications, ranging from electronic devices to sensors. GFNs include the Nobel Prize winning material, Graphene, and it is currently starting to be produced in mass scale.  Graphene Oxide (GO) is a functionalised form of graphene and is easily exfoliated in aqueous medium.  GOs suspend more regularly than graphene in water, and therefore offer more possibilities for up-scaling in certain applications of GFNs. However, the life cycle of these materials after their application and an understanding of their impact on the environment are still in their infancy.