Superabsorption of acoustic waves with bubble metascreens

Leroy, Valentin; Strybulevych, Anatoliy; Lanoy, Maxime; Lemoult, Fabrice; Tourin, Arnaud; Page, John H.

doi:10.1103/physrevb.91.020301

Cited by 199 publications

(147 citation statements)

References 30 publications

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“…Moreover, the actual topic of "meta screens" takes advantage of super absorption properties of monodisperse bubble's network at resonance. 14,15 In all of these issues, the mastery of the microbubble size is mandatory. The ability to produce calibrated microbubbles is thus an important requirement.…”

confidence: 99%

Tunable microbubble generator using electrolysis and ultrasound

et al. 2017

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International audienceThis letter reports on a method for producing on demand calibrated bubbles in a non-chemically controlled solution using localized micro-electrolysis and ultrasound. Implementing a feedback loop in the process leads to a point source of stable mono-dispersed microbubbles. This approach overcomes the inertial constraints encountered in microfluidics with the possibility to produce from a single to an array of calibrated bubbles. Moreover, this method avoids the use of additional surfactant that may modify the composition of the host ﬂuid. It impacts across a broad range of scientific domains from bioengineering, sensing to environment

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confidence: 99%

Tunable microbubble generator using electrolysis and ultrasound

et al. 2017

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“…In addition, the oscillating bubble medium has strong dissipative properties, the resulting dissipative losses are mainly associated with interfacial heat transfer. Such special properties of bubble liquids make it possible to use bubble screens as ultrathin anti-hydrolocation coatings [1]. At present, air bubble layers are already being used to shield noise from anthropogenic activities during underwater drilling operations, noise from vibrations of other technical devices, and pile driving in coastal zones [2].…”

Section: Introductionmentioning

confidence: 99%

Interaction acoustic waves with a layered structure containing layer of bubbly liquid

Gubaidullin

Nikiforov

2018

MATEC Web Conf.

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Abstract.The results of a theoretical study of the effect of a bubble layer on the propagation of acoustic waves through a thin three-layered barrier at various angles of incidence are presented. The barrier consists of a layer of gel with polydisperse air bubbles bounded by layers of polycarbonate. It is shown that the presence of polydisperse air bubbles in the gel layer significantly changes the transmission and reflection of the acoustic signal when it interacts with such an obstacle for frequencies close to the resonant frequency of natural oscillations of the bubbles. The frequency range is identified where the angle of incidence has little effect on the reflection and transmission coefficients of acoustic waves.

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“…This is due to both natural phenomena, such as, for example, near-bottom or subsurface layers containing gas bubbles in seas and lakes [1][2][3][4][5], layers of fog, dusty gas, containing in atmosphere [6][7][8], and engineering processes [9,10]. The design and parameters of a combined panel consisting of two glasses or polycarbonates with a gap between them filled with a bubbly fluid is described in [10]; this panel is used for the simultaneous information protection in the acoustic, optical, and electromagnetic technical channels.…”

Section: Introductionmentioning

confidence: 99%

Reflection of acoustic waves from the boundary or layer of two-phase medium

2018

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Abstract. The inclined incidence of the acoustic wave on a layer of gas-droplet mixture or bubbly liquid of finite thickness is theoretically investigated. In the case of the incidence of the low-frequency acoustic wave to interface between the pure gas and aerosol or to interface between pure liquid and bubbly liquid the basic laws of reflection and transmission of a wave are established. This circumstance allows us to evaluate the transmission and reflection coefficients, depending on the volume content of inclusions and the angle of incidence of the acoustic wave. In particular, for the interface between pure gas and aerosol analytical expressions of the critical angle of wave incidence at which reflection coefficient becomes zero are obtained, i.e. thus there is a complete passage of the acoustic wave through the interface. It is established that the increase of the angle of incidence of the acoustic wave on the boundary or layer of aerosol causes: first, either to increase or to decrease of the reflection coefficient at low frequencies, and second, to appearance of additional minima depending on the reflection coefficient from frequency of disturbances related to the difference of speed of sound and density of the medium.

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Superabsorption of acoustic waves with bubble metascreens

Cited by 199 publications

References 30 publications

Tunable microbubble generator using electrolysis and ultrasound

Tunable microbubble generator using electrolysis and ultrasound

Interaction acoustic waves with a layered structure containing layer of bubbly liquid

Reflection of acoustic waves from the boundary or layer of two-phase medium

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