Recently, the area of wireless sensor networks (WSNs) has emerged as a topic of considerable importance, under which it
is envisaged that in the near to medium term, many millions of sensors will feed data into a ubiquitous communications infrastructure, providing information on personal health indicators, the status of the environment, the quality of our food, or the presence of a threat or hazard.
However, despite the obvious importance of information that can be provided by chemo/bio-sensors, there is still very limited activity in the literature that convincingly demonstrates the application of these devices in aWSN [2].
A major inhibiting factor to the widespread deployment of chemical sensors/biosensors withinWSNs is the need to perform regular calibration, due to changes occurring at the active sensing surface of the device
Calibration involves integrating liquid control features which, with current technologies, results in a much more complex and expensive device than would be desirable for WSN deployments.