In this paper we propose totally flexible organic field effect transistors (OFETs) assembled on plastic films as sensors for
physiological parameters monitoring. In the first part, mechanical sensors for pressure and bending detection are
presented and some biomedical sensing applications are illustrated. A sharp and reversible sensitivity of the output
current of the device to an elastic deformation induced by means of a mechanical stimulus on the device channel is
observed. In the second part, the possibility of using similar devices for bio- and chemo-detection is described. By
exploiting the properties of the basic structure, the device can be combined with any kind of substrate to detect for
instance the 3D bending of a flexible surface and/or for detecting pH of sweat. Robot skin and wearable electronics seem
to be promising applications for this emerging technology.
In this work we present an innovative structure for organic Thin Film Transistors (TFTs) that is transparent, flexible, and optimized for a good behaviour at relatively high frequencies. Starting from a basic structure, several possible options for building such kind of structure can be implemented. In this work, material, technology, and measurement issues will be discussed.