WARF TECHNOLOGIES

UW-Madison researchers and collaborators from Wesleyan University have shown, using an exceptional point (EP)-based PT-symmetric electromechanical accelerometer, that increases in technical noise can be surpassed by an enhanced responsivity to applied accelerations. The fundamental noise is mitigated by exploiting the detuning from a transmission peak degeneracy (TPD), which forms when the sensor is weakly coupled to transmission lines, as a sensitivity measurement. These TPDs occur at a frequency and controlled parameters for which the eigenbasis is still complete and are distinct from the EPs of the PT-sensor. They also show an enhanced detuning rate compared to the typically utilized EPs. This device demonstrates a three-fold signal-to-noise ratio enhancement compared to configurations for which the system operates away from the TPD.

For More Information About the Inventors

• Ramathasan Thevamaran

Tech Fields

• Analytical Instrumentation, Methods & Materials : Sensors