Over-damped recipe for impedance modulation. (IMAGE)

Science China Press

Over-damped recipe for impedance modulation.

Caption

(a) Schematic of the cascade neck-embedded Helmholtz-resonator (CNEHR). (b) Redundant thickness with varying length (t1 and t2) of EN1 and EN2. (c) Resistance at the 1st-order resonance frequency corresponds to the CNEHR in (a) with varying length t1 and t2. (d) Theoretical absorption spectra of two different CNEHRs with a thickness of 100 mm and 20 mm. (e) Reflection coefficients in complex frequency plane correspond to the structures in (d).

Credit

©Science China Press

Usage Restrictions

Use with credit.

License

Original content

Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.