Sensor materials used for wireless wearables in healthcare

Polymeric sensors are used for biomedical sensors

Biomedical sensors signals have low frequency and hence require a low data rate

Mostly powered up by tiny lithium polymer batteries.

For an energy harvested sensor application,the energy is often less than 100uW.thus a duty cycled radio is best to be used in such energy constrained applications 

The sensing elements can be furtherclassfied as:

Solids : polymers, carbon semiconductors, carbon nanotube, nanowires,nanofibers and nanoparticles.

Liquids : ionic fluids and mettalic fluids.

Flexible substrates for mimicking skin include thermoplastic polymers such as polyurethane and polythylene 

Other class of flexible substrates used are soft silicone elastoners such as polydimethylsiloxane which are chemically inert and biocompatible.

Transducers used in such applications are piezoelectric, capacitive or resistive.