Because of their large surface area, carbon nanomaterials have the ability to physically and chemically absorb the chemicals on their surface. These carbon nanomaterials then alter their properties, which is the foundation for the chemical sensor applications.
Tentzeris and co. explain that it should be possible to print these carbon-based inks at enormous scales, perhaps using substrates (paper, likely) multiple kilometers in length. Finally, an RFID integrated circuit is connected. This skin is wireless.
That last part is where things get really interesting. Tentzeris’ skin is connected to a wireless identification and sensing platform (WISP), which is available as an off-the-shelf technology capable of harvesting power from its environment, sensing (obviously), on-board signal processing, and transmitting signals back to an RFID reader on-demand.