Magnetostrictive mechanical frequency combs.

ABSTRACT: Magnetostriction plays a pivotal role in magneto-mechanical systems. Here, we propose and experimentally demonstrate a mechanical frequency comb solely requiring the fundamental mode f₀ of a magnetostrictive mm-scale macroresonator. Both integer-harmonic combs and half-integer-harmonic combs are observed in kHz regime with Hz resolution by near-resonant pumping f_p ≈ f₀ and parametrical stiffness modulation f_s ≪ f₀. The tooth spacing of both combs is determined by f_s, which can be continuously tuned by changing f_s from Hz to kHz. Moreover, the half-integer-harmonic combs can be purposely switched with frequency shifting half a tooth spacing via suppressing period-doubling bifurcation. The experimentally observed fo

SUBMITTER: Ye G 

PROVIDER: S-EPMC12603168 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature