Systems and methods for electrical sensing of biomolecular targets

A system for detecting a target molecule in a sample, comprising:

• a source terminal;
• a drain terminal;
• a sensor coupled to the source terminal and the drain terminal, the sensor configured to monitor electrical signals across the source terminal and drain terminal;
• a gate positioned between the source terminal and the drain terminal;
• and
• a channel positioned above the gate, the channel comprising a functionalized sensor surface configured to bind the target molecule.

A system for detecting a target molecule in a sample, comprising:

• a substrate;
• a first transducer positioned on the substrate, the first transducer having a signal input;
• a second transducer positioned on the substrate, the second transducer having a signal output;
• a sensor coupled to the signal input to input a signal and to the signal output to measure an output signal;
• and
• a delay area positioned between the first transducer and the second transducer, the delay area having a functionalized coating configured to bind the target molecule.