Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab
With the aim of selecting particular frequencies of interest and rejecting others, the waveguiding and filtering properties of a two-dimensional phononic crystal slab are investigated in the context of a filtering application. To this end, we designed and manufactured a metallic device that consists...
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/13/4594 |
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| author | Mohd Syafiq Faiz Mahmoud Addouche Ahmad Rifqi Md. Zain Kim S. Siow Amar Chaalane Abdelkrim Khelif |
| author_facet | Mohd Syafiq Faiz Mahmoud Addouche Ahmad Rifqi Md. Zain Kim S. Siow Amar Chaalane Abdelkrim Khelif |
| author_sort | Mohd Syafiq Faiz |
| collection | DOAJ |
| description | With the aim of selecting particular frequencies of interest and rejecting others, the waveguiding and filtering properties of a two-dimensional phononic crystal slab are investigated in the context of a filtering application. To this end, we designed and manufactured a metallic device that consists of a square lattice of cylindrical pillars mounted on the top of a plate by using 3D printing technology. We respectively explored the theoretical and experimental characteristics of the device by using finite element method, a Micro System Analyzer (MSA) and a scanning laser Doppler vibrometer. The proposed device shows a complete band gap for Lamb wave around 0.3 MHz with a relative band-width of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>30</mn> <mo>%</mo> </mrow> </semantics> </math> </inline-formula>. Tailorable waveguides are realized inside this phononic crystal by inserting several space gaps to achieve a demultiplexing effect through the splitting of an acoustic signal towards three different bandpass frequency channels. The demultiplexing performance has been experimentally demonstrated by achieving rejection levels up to 60 dB. The proposed phononic platform can have a significant impact in signal processing as well as droplet manipulation for biological applications. |
| first_indexed | 2024-03-10T18:43:37Z |
| format | Article |
| id | doaj.art-74b8046f70924985943c11ddaa828098 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:43:37Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-74b8046f70924985943c11ddaa8280982023-11-20T05:38:49ZengMDPI AGApplied Sciences2076-34172020-07-011013459410.3390/app10134594Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal SlabMohd Syafiq Faiz0Mahmoud Addouche1Ahmad Rifqi Md. Zain2Kim S. Siow3Amar Chaalane4Abdelkrim Khelif5Institut FEMTO-ST, CNRS, Université de Bourgogne Franche-Comté 15B Avenue des Montboucons, CEDEX, F-25030 Besançon, FranceInstitut FEMTO-ST, CNRS, Université de Bourgogne Franche-Comté 15B Avenue des Montboucons, CEDEX, F-25030 Besançon, FranceInstitute of Microengineering and Nanoelectronics (IMEN), Bangi 43600, Selangor, MalaysiaInstitute of Microengineering and Nanoelectronics (IMEN), Bangi 43600, Selangor, MalaysiaInstitut FEMTO-ST, CNRS, Université de Bourgogne Franche-Comté 15B Avenue des Montboucons, CEDEX, F-25030 Besançon, FranceInstitut FEMTO-ST, CNRS, Université de Bourgogne Franche-Comté 15B Avenue des Montboucons, CEDEX, F-25030 Besançon, FranceWith the aim of selecting particular frequencies of interest and rejecting others, the waveguiding and filtering properties of a two-dimensional phononic crystal slab are investigated in the context of a filtering application. To this end, we designed and manufactured a metallic device that consists of a square lattice of cylindrical pillars mounted on the top of a plate by using 3D printing technology. We respectively explored the theoretical and experimental characteristics of the device by using finite element method, a Micro System Analyzer (MSA) and a scanning laser Doppler vibrometer. The proposed device shows a complete band gap for Lamb wave around 0.3 MHz with a relative band-width of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>30</mn> <mo>%</mo> </mrow> </semantics> </math> </inline-formula>. Tailorable waveguides are realized inside this phononic crystal by inserting several space gaps to achieve a demultiplexing effect through the splitting of an acoustic signal towards three different bandpass frequency channels. The demultiplexing performance has been experimentally demonstrated by achieving rejection levels up to 60 dB. The proposed phononic platform can have a significant impact in signal processing as well as droplet manipulation for biological applications.https://www.mdpi.com/2076-3417/10/13/4594phononic crystal slabsphononic waveguidinglamb waveswave demultiplexing |
| spellingShingle | Mohd Syafiq Faiz Mahmoud Addouche Ahmad Rifqi Md. Zain Kim S. Siow Amar Chaalane Abdelkrim Khelif Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab Applied Sciences phononic crystal slabs phononic waveguiding lamb waves wave demultiplexing |
| title | Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab |
| title_full | Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab |
| title_fullStr | Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab |
| title_full_unstemmed | Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab |
| title_short | Experimental Demonstration of a Multichannel Elastic Wave Filter in a Phononic Crystal Slab |
| title_sort | experimental demonstration of a multichannel elastic wave filter in a phononic crystal slab |
| topic | phononic crystal slabs phononic waveguiding lamb waves wave demultiplexing |
| url | https://www.mdpi.com/2076-3417/10/13/4594 |
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