Symmetry Induced Heteroclinic Cycles in Coupled Sensor Devices

In this paper we discuss the existence and stability of heteroclinic cycles in coupled systems and show how they canbeexploitedto designandfabricate anew generationof highly-sensitive,low-powered, sensor devices. More specifically, we present theoretical and experimental proof of concept that coupling-induced oscillations located near the bifurcation point of a heteroclinic cycle can significantly enhance the sensitivity of an array of magnetic sensors. In particular, we consider arrays made up of fluxgate magnetometers inductively coupled through electronic circuits.