There's been some research into using piezoelectric elements coated with antigen or other reactive surfaces.
A positive result (meaning antibodies are attaching themselves to the substrate) would change the resonant frequency of the surface.
http://www.sciencedirect.com/science/article/pii/S0003267000...
There's been some research into using piezoelectric elements coated with antigen or other reactive surfaces.
A positive result (meaning antibodies are attaching themselves to the substrate) would change the resonant frequency of the surface.
http://www.sciencedirect.com/science/article/pii/S0003267000...