Systems and methods for detecting the presence of biomolecules in a sample using biosensors that incorporate resonators which have functionalized surfaces for reacting with target biomolecules. In one embodiment, a device includes a piezoelectric resonator having a functionalized surface configured to...http://www.google.com/patents/US7914740?utm_source=gb-gplus-sharePatent US7914740 - Biosensor utilizing a resonator having a functionalized surface
