Erratum: Martins, M.S., et al. Wideband and Wide Beam Polyvinylidene Difluoride (PVDF) Acoustic Transducer for Broadband Underwater. Sensors 2019, 19, 3991

Marcos S. Martins; Carlos L. Faria; Tiago Matos; Luís M. Goncalves; José Cabral; António Silva; Sérgio M. Jesus

doi:10.3390/s19224928

,

and

¹

MEMS-UMinho, University of Minho, Campus of Azurém, 4800-058 Guimarães, Portugal

²

LARSyS, University of Algarve Campus de Gambelas, 8005-139 Faro, Portugal

^*

Author to whom correspondence should be addressed.

Sensors2019, 19(22), 4928;https://doi.org/10.3390/s19224928

This article belongs to the Special Issue Marine Sensors: Recent Advances and Challenges

Version Notes

Order Reprints

The authors wish to make the following erratum to this paper [1]:

Equations (1), (7), and (9) are incorrect and must be replaced by the following equations:

R = \frac{Z_{2} - Z_{1}}{Z_{2} + Z_{1}}

(1)

p = 2 π c ρ f ξ

(7)

n t_{p} \leq \frac{1}{2 π c ρ S_{33}^{E} f}

(9)

The authors apologize for this literal mistake, but emphasize that the content of the article is still correct, since all calculations were performed with the correct equations. The manuscript will be updated and the original will remain online on the article webpage, with a reference to this Erratum.

References

Martins, M.S.; Faria, C.L.; Matos, T.; Goncalves, L.M.; Cabral, J.; Silva, A.; Jesus, S.M. Wideband and Wide Beam Polyvinylidene Difluoride (PVDF) Acoustic Transducer for Broadband Underwater Communications. Sensors 2019, 19, 3991. [Google Scholar] [CrossRef] [PubMed]

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Erratum: Martins, M.S., et al. Wideband and Wide Beam Polyvinylidene Difluoride (PVDF) Acoustic Transducer for Broadband Underwater. Sensors 2019, 19, 3991

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