Abstract: Systems and methods for mass sensing based on integrated, functionalized piezoelectric resonators are described. A sensor includes a resonator coupled to an amplifier to form an oscillator. The resonator comprises a piezoelectric material and two or more electrodes, wherein the resonator has a first set of resonances, each with a set of electrical parameter values; a reflector underneath the resonator; a receptor coupled to the resonator, wherein the resonator has a second set of resonances, each with a set of different electrical parameter values when the target binds to the receptor; and a heating element and temperature sensor coupled to the receptor.

Abstract: A non-reciprocal filter with parametric amplification to obtain non-reciprocal propagation of forward and reverse signals is disclosed. The non-reciprocal filter may include two asymmetrical transmission lines and a current source. The filter, when implemented in the acoustics domain using surface acoustic waves (SAW), may operate in a phase-coherent or a phase-incoherent degenerate mode, providing low insertion loss and high decibels of isolation.

Abstract: A non-reciprocal filter with parametric amplification to obtain non-reciprocal propagation of forward and reverse signals is disclosed. The non-reciprocal filter may include two asymmetrical transmission lines and a current source. The filter, when implemented in the acoustics domain using surface acoustic waves (SAW), may operate in a phase-coherent or a phase-incoherent degenerate mode, providing low insertion loss and high decibels of isolation.