Table 5 Comparison study.

From: Tunable sensing properties of a Helmholtz resonator array featuring a central defect cell with four lateral ducts

Structure

S (Hz.s.\(\:{m}^{-1}\))

FoM (s\(\:.{m}^{-1}\))

Q

References

Periodic expansion chambers

2.55

9.16

4077

6

Ternary-symmetric periodic tubes

1.58

33.7

6790

30

Serial open resonators

5.8

140

5000

31

Parallel closed resonators

4.1

332

113,962

34

PHRs with defect HR

1.14

66.4

16,515

36

PHRs with defective horizontal guide

0.88

\(\:8.8\times\:{10}^{6}\)

\(\:3\times\:{10}^{9}\)

42

HRPLDs

3.8

380.7

129,422

This study

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