A Bimodal Approach to Broadband Vibration Energy Harvesting Using Hybrid Piezoelectric-Electromagnetic Transduction.

Micromachines (Basel) · 2026 · PMC13209357 · PMID 42195470

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Furthermore, when R d > 25 mm, the equivalent stiffness coefficient K m of the first-order term—obtained via the Taylor expansion of F kz near Δ z = 0—exhibits a decreasing trend, as shown in Figure 4 .

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