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The propagation of electromagnetic fields in matter has been the subject ofintensive studies since the discovery of its rich dynamics. Impedancemeasurements are one most used technique available to study material propertiesas well as electromagnetic devices and circuits. This way, novelties on deviceconstruction and circuit technology associated to new material propertiesand/or unusual field dynamics generally rely on results supported by impedancedata. Recent advances on nanostructured materials explore astounding molecularproperties derived from nanoscale levels and apply them to studies foucused onthe generation of new devices. Accordingly, properties inherent to quantumdynamics can also generate unusual circuit elements, not included on the formerdevelopment of the electromagnetic theory. On same footings, advances in fielddynamics could also determine the advent of new technologies, producingimmediate impact on our everyday life. In this work we present the resultsobtained by measuring the impedance of single spires and coils of specificgeometry in the MHz range. They demonstrate that a new passive circuit elementwas found, which bears out the existence of an as yet unobserved propagationmode of the electromagnetic fields in matter. Our results also indicates thatthis effect is more evident using carbon made spires.

Evidence for undamped waves on ohmic materials