Flexible horological component, particularly for an oscillator mechanism, and horological movement including such a component

A flexible horological component for an oscillator mechanism of a horological movement, the flexible horological component extending along a principal plane, the flexible horological component comprising:

• a part made of a composite material, wherein the composite material comprises a matrix and a multitude of nanowires distributed in the matrix, the nanowires being juxtaposed and disposed substantially parallel with an axis substantially perpendicular to the principal plane of the flexible horological component, the matrix including a flexible filling material that fills interstices between the nanowires, the flexible filling material comprising at least in part a thermal compensation material wherein the thermoelastic coefficient (TEC) is of the opposite sign to that of the other materials of the composite material,
• wherein the nanowires have a diameter within a range ranging from 2 to 50 nm, and
• the thermal compensation material forms an outer layer of the matrix that surrounds the nanowires in at least directions perpendicular to the axis, or the thermal compensation material is arranged directly on the nanowires.