Acoustic waves in solid and fluid layered materials

Boudouti, El Houssaine El; Djafari‐Rouhani, Bahram; Akjouj, Abdellatif; Dobrzyński, L.

doi:10.1016/j.surfrep.2009.07.005

Cited by 74 publications

(53 citation statements)

References 287 publications

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“…The bandwidth and depth of the generated bandgap will depend on the ratio of acoustic impedances between consecutive layers. The larger it is, the larger the scattering effect of the structure, generating a wider frequency range with large acoustic rejection over which acoustic waves are not transmitted [8].…”

Section: (B)mentioning

confidence: 99%

Fully-disposable multilayered phononic crystal liquid sensor with symmetry reduction and a resonant cavity

et al. 2017

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. Fullydisposable multilayered phononic crystal liquid sensor with symmetry reduction and a resonant cavity. Measurement: Journal of the International Measurement Confederation, 102, pp. 20-25. doi: 10.1016Confederation, 102, pp. 20-25. doi: 10. /j.measurement.2017 This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent b s t r a c tPhononic crystals are artificial structures with unique capabilities to control the transmission of acoustic waves. These novel periodic composite structures bring new possibilities for developing a fundamentally new sensor principle that combines features of both ultrasonic and resonant sensors. This paper reports the design, fabrication and evaluation of a phononic crystal sensor for biomedical applications, especially for its implementation in point of care testing technologies. The key feature of the sensor system is a fully-disposable multi-layered phononic crystal liquid sensor element with symmetry reduction and a resonant cavity. The phononic crystal structure consists of eleven layers with high acoustic impedance mismatch. A defect mode was utilized in order to generate a well-defined transmission peak inside the bandgap that can be used as a measure. The design of the structures has been optimized with simulations using a transmission line model. Experimental realizations were performed to evaluate the frequency response of the designed sensor using different liquid analytes. The frequency of the characteristic transmission peaks showed to be dependent on the properties of the analytes used in the experiments. Multi-layered phononic crystal sensors can be used in applications, like point of care testing, where the on-line measurement of small liquid samples is required.

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Section: (B)mentioning

confidence: 99%

Fully-disposable multilayered phononic crystal liquid sensor with symmetry reduction and a resonant cavity

et al. 2017

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“…In the low frequency range the pressure in the gap does not depend from the radial coordinate [10], which allows assuming (1) (2) c c p p . As a result, the dynamic boundary conditions take the form:…”

Section: Shell Dynamicsmentioning

confidence: 99%

“…Propagation of waves in multilayered systems was the subject of a great number of studies during recent years [1]. Among others, acoustic properties of trilayers have attracted considerable attention because important applications in industry, chemical technology, petroleum production.…”

Section: Introductionmentioning

confidence: 99%

Low frequency wave propagation in cylindrical elasto-viscoelastic trilayer in the presence of free gas

Levitsky

Bergman

2013

2013 IEEE International Ultrasonics Symposium (IUS)

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The study is devoted to investigation of the liquid rheology effect on low-frequency wave propagation in a gap between two elastic cylindrical shells, filled with viscoelastic polymeric solution. The presence of free gas traces in liquid, typical for polymeric solutions, is accounted for. It is supposed that volume concentration of free gas is small, the microbubbles are size distributed, and the losses in the wave stem from both liquid-shell and liquid-bubble dynamic interaction. Rheology of polymeric liquid is described by generalized Maxwell model with Newtonian viscous term, responsible for low-molecular solvent contribution in the stress tensor. Dynamic equations for thin elastic shells are formulated within Kirchhoff-Love approximation; hydrodynamics of liquid flow in the gap in the wave is described using quasi-one-dimensional approach. The dispersion equation, accounting for structure coupling in the wave (both liquid-solid and liquid-gas) is obtained and studied numerically for different parameter values. The analysis has revealed strong dependence of sound dispersion in the system from liquid properties, gas concentration, shell elasticity and the gap width and has showed important effect of structure coupling on the wave propagation. Results of the study may be useful for modeling of dynamic behavior of structure elements at polymer extrusion and in free gas monitoring at polymer processing.

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“…[4][5][6] Phononic crystals can be fabricated using solids and fluids, the advantage of designing a structure that mixes both solids and fluids is that the acoustic impedance mismatch between the materials is very large, thus resulting in broader and deeper bandgaps. [7][8][9][10] 1D phononic crystals, also called multilayered phononic crystals or superlattices are formed by a series of thin layers with a significant impedance mismatch between consecutive layers and with large lateral dimensions compared to their thickness. This type of layer arrangement facilitates the selective reflection of the waves and the generation of bandgaps and has been previously used to develop sensing applications.…”

Section: Introductionmentioning

confidence: 99%

Use of Transient Time Response as a Measure to Characterize Phononic Crystal Sensors

Arango¹,

Sánchez²,

Torres³

et al. 2018

Preprint

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Phononic crystals are periodic composite structures with specific resonant features that are gaining strength in the field as liquid sensors. The introduction of a structural defect in an otherwise periodic regular arrangement can generate a resonant mode, also called defect mode, inside the characteristic band gaps of phononic crystals. The morphology, as well as the frequency in which these defect modes appear, can give useful information on the composition and properties of an analyte. Currently, only gain, and frequency measurements are performed using phononic crystal sensors. Other measurements like the transient response have been implemented in resonant sensors such as quartz microbalances showing great results and proving to be a great complimentary measure to the gain and frequency measurements. In the present paper, a study of the feasibility of using the transient response as a measure to acquire additional information about the analyte is presented. Theoretical studies using the transmission line model were realized to show the impact of variations in the concentration of an analyte, in this case, lithium carbonate solutions, in the transient time of the system. Experimental realizations were also performed showing that the proposed measurement scheme presents significant changes in the resulting data, indicating the potential use of this measure in phononic crystal sensors. This proposed measure could be implemented as a stand-alone measure or as a compliment to current sensing modalities.

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Acoustic waves in solid and fluid layered materials

Cited by 74 publications

References 287 publications

Fully-disposable multilayered phononic crystal liquid sensor with symmetry reduction and a resonant cavity

Fully-disposable multilayered phononic crystal liquid sensor with symmetry reduction and a resonant cavity

Low frequency wave propagation in cylindrical elasto-viscoelastic trilayer in the presence of free gas

Use of Transient Time Response as a Measure to Characterize Phononic Crystal Sensors

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