Acoustically induced streaming flows near a model cod otolith and their potential implications for fish hearing

Kotas, Charlotte W.; Rogers, Peter H.; Yoda, Minami

doi:10.1121/1.3605295

Cited by 5 publications

(3 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Acoustic pressure gives a scalar field, providing directional ambiguities for sensors which are small compared to the wavelength. Kotas et al [22] and Webb et al [23] describe the "180 deg ambiguity" which remains for plane waves, even when the "line of bearing" can be determined by using their otolith inertial sensors. Klages et al [24] consider how "micro seismic events" such as food falling onto the deep seabed may provide critical information for benthic species.…”

Section: The Extra Information In the Vector Field May Be Critical Fomentioning

confidence: 99%

Modeling Water Motion near Seismic Waves Propagating across a Graded Seabed, as Generated by Man-Made Impacts

Hazelwood¹,

Macey²

2016

JMSE

View full text Add to dashboard Cite

Seismic interface waves generated by seabed impacts are believed to have biological importance. Various wave types are of interest to seismologists, who can minimize the unwanted, but often dominant, ground roll waves with suitable instrumentation. Waves made by dredging and piling have been measured using geophones and found to be of this interface type, which propagate much more slowly than the pressure waves in the water column above. Short interface wavelets of a few cycles were modeled using transient finite element analysis (FEA). Wavelets with low losses have been modeled using graded sediment data from the literature. They do not radiate energy away from the interface because the evanescent acoustic pressures they generate decay rapidly with distance from the seabed. Associated water particle velocities are much greater than would be expected from similar acoustic pressure measurements in a free field. This motion is significant to aquatic life which is dependent on inertial sensors (otoliths, etc.) to respond to the environment. Additional amplification of the horizontal seabed motion of the adjacent water is predicted for a short seismic wavelet modeled in a graded solid seabed. Further recent analysis studied the distribution of the energy flux within the sediment layers.

show abstract

Section: The Extra Information In the Vector Field May Be Critical Fomentioning

confidence: 99%

Modeling Water Motion near Seismic Waves Propagating across a Graded Seabed, as Generated by Man-Made Impacts

Hazelwood¹,

Macey²

2016

JMSE

View full text Add to dashboard Cite

show abstract

“…Böhnke & Scharff 2009;Gerstenberger & Wolters 2011). Kotas, Rogers & Yoda (2011) performed an experimental study on the streaming in the inner ear of fish and investigated whether streaming might stimulate the hair cells of the otoliths (linear balance sense). To the best of the authors' knowledge, the only available numerical results on streaming in the human cochlea are due to Gerstenberger (2013).…”

Section: Introductionmentioning

confidence: 99%

Steady streaming in a two-dimensional box model of a passive cochlea

2014

View full text Add to dashboard Cite

Acoustic stimulation of the cochlea leads to a travelling wave in the cochlear fluids and on the basilar membrane (BM). It has long been suspected that this travelling wave leads to a steady streaming flow in the cochlea. Theoretical investigations suggested that the steady streaming might be of physiological relevance. Here, we present a quantitative study of the steady streaming in a computational model of a passive cochlea. The structure of the streaming flow is illustrated and the sources of streaming are closely investigated. We describe a source of streaming which has not been considered in the cochlea by previous authors. This source is also related to a steady axial displacement of the BM which leads to a local stretching of this compliant structure. We present theoretical predictions for the streaming intensity which account for these new phenomena. It is shown that these predictions compare well with our numerical results and that there may be steady streaming velocities of the order of millimetres per second. Our results indicate that steady streaming should be more relevant to low-frequency hearing because the strength of the streaming flow rapidly decreases for higher frequencies.

show abstract

“…One example is streaming flows generated in the mammalian inner ear upon a perturbation caused by an incident sound wave. [215][216][217] Similarly, the self-propulsion mechanism of some flagella-less microorganisms, such as the cyanobacterium Synechococcus, is hypothesized to be acoustic streaming. 218,219 This hypothesis is also inspiring the development of autonomous microswimmers propelled by acoustic streaming.…”

Section: Oscillating Cellsmentioning

confidence: 99%

Acousticofluidics For Diagnostics And Intracellular Delivery

Salari¹

2021

Preprint

View full text Add to dashboard Cite

<div>In biomedical research, there is a high demand for tools that provide high precision, costeffective, and portable methodologies for diagnostic and drug delivery purposes. The main focus of this thesis is on ultrasound techniques, where sound waves are employed for conducting in vivo and in vitro tests for different diagnostic and therapeutic applications. First, bubble-mediated ultrasound approaches for imaging are explored, and then, a bubble-free acoustofluidic strategy is proposed for in vitro intracellular delivery applications. </div><div>As a significant component of many ultrasound techniques, microbubbles have been used as contrast agents and for targeted imaging and drug delivery applications. Size, monodispersity, and stability of microbubbles are important characteristics for the effectiveness of these techniques, and therefore, various methods have been developed for producing microbubbles. In the first microfluidic approach, an expansion-mediated breakup regime is proposed that enables a controlled breakup of large bubbles into smaller size microbubbles in a microfluidic device. Also, various population distributions are reported, and the governing dimensionless numbers are identified. In the second approach, by taking advantage of the dynamics of the bubble size variation inside a gas permeable microfluidic device, the shrinkage of large bubbles into smaller size microbubbles is presented. Theoretical modeling and experimental verification are conducted to identify the design parameters governing the final size of the microbubbles. It is also shown that by controlling the mixing ratio of a high-molecular-weight gas with a low-molecular-weight gas, this approach could enable the production of nanobubbles.<br></div><div>An acoustofluidic strategy for probing cellular stiffness and facilitating intracellular delivery is also presented. Acoustic waves are employed to control the oscillations of adherent cells in a microfluidic channel. Novel observations are reported that individual cells are able to induce microstreaming flow when they are excited by controlled acoustic waves in vitro. A strong correlation between cell stiffness and cell-induced microstreaming flow is observed. Also, it is shown that the combined effect of acoustic excitation and cell-induced microstreaming can facilitate the cellular uptake of different size cargo materials. Successful delivery of 500 kDa dextran to various cell lines with unprecedented efficiency in the range of 65–85% in a 20 min treatment is demonstrated.<br></div>

show abstract

Acoustically induced streaming flows near a model cod otolith and their potential implications for fish hearing

Cited by 5 publications

References 50 publications

Modeling Water Motion near Seismic Waves Propagating across a Graded Seabed, as Generated by Man-Made Impacts

Modeling Water Motion near Seismic Waves Propagating across a Graded Seabed, as Generated by Man-Made Impacts

Steady streaming in a two-dimensional box model of a passive cochlea

Acousticofluidics For Diagnostics And Intracellular Delivery

Contact Info

Product

Resources

About