Investigation of some low ultrasonic absorption liquids

Attal, J.; Quate, C. F.

doi:10.1121/1.380827

Cited by 37 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The variation of the impedance at resonance as a function of the viscosity is shown in figure 7 and is put versus the square root of the viscosity µ. This straight line corresponds with the formula given in (8) [7]. The frequency shift given in figure 8 depends, besides the density, on another parameter.…”

Section: Resultsmentioning

confidence: 64%

Measurement of the viscosity of liquids by near-field acoustics

Prugne

Est

Cros

et al. 1998

Meas. Sci. Technol.

View full text Add to dashboard Cite

We have studied the relationship between the acoustic properties of a near-field acoustic sensor and the properties of a liquid. An acoustic stepped horn is driven by two piezoelectric elements. The generated acoustic waves cause the solid horn to resonate and an acoustic load at the tip modifies these oscillation modes. This leads to a change in electric impedance at the piezoelectric elements. This sensitivity to acoustic load allows a study of semi-infinite liquids. We found a relation between the resonance frequency and the liquid density and a relation between the electric impedance and the viscosity.

show abstract

Section: Resultsmentioning

confidence: 64%

Measurement of the viscosity of liquids by near-field acoustics

Prugne

Est

Cros

et al. 1998

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The former made an interferometer operating with the pulse mode and obtained absorption at 2.8 GHz; the latter studied various kinds of liquids by a pulse method and presented the absorption spectrum up to 3 GHz. Attal and Quate (1976) used an apparatus with an ultrasonic microscope to study low-absorption liquids up to 4 GHz.…”

Section: Introductionmentioning

confidence: 99%

Measurement of ultrasonic velocity and absorption in liquids up 1.5 GHz by the high-resolution Bragg reflection technique

Takagi

Negishi

1982

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

A new UHF ultrasonic technique which is useful for simultaneous measurement of the velocity and absorption in liquids is introduced and described in detail. A ZnO film transducer excites a continuous ultrasonic wave in the test liquid which is illuminated by a highly collimated beam from a He-Ne laser. The light scattered by the sound is detected by an optical heterodyne technique and recorded as variations in the angle of optical incidence with respect to the sound wavefront. The recorded curve is associated with the k spectrum of the sound; the peak and the width give the ultrasonic velocity and absorption, respectively. The accuracy is better than 0.1% for nu and 5% for alpha . The experiment was performed in carbon disulphide and bromoform near room temperature, over a range from 50 MHz to 1.5 GHz. The results are combined with the data obtained by a pulse method and by spontaneous Brillouin scattering to present the ultrasonic spectra over the range from 3 MHz to 6 GHz.

show abstract

“…KI solution is commonly used in acoustic characterization because its acoustic velocity is independent of concentration and nearly constant. 20 Here, 3 mol/l KI solution is injected into the lens and the S 11 (return loss) reflection coefficient is measured. The acoustic beams are generated from the ZnO transducer, reflected by the 45 mirror, and propagate into the KI solution in the microchannel, focused by the lens into the reflection wall, and then the beams return along the original path and back to the transducer.…”

mentioning

confidence: 99%

High frequency acoustic on-chip integration for particle characterization and manipulation in microfluidics

Carlier

Toubal

et al. 2017

Applied Physics Letters

View full text Add to dashboard Cite

This letter presents a microfluidic device that integrates high frequency (650 MHz) bulk acoustic waves for the realization of particle handling on-chip. The core structure of the microfluidic chip is made up of a confocal lens, a vertical reflection wall, and a ZnO film transducer coupled with a silicon substrate for exciting acoustic beams. The excited acoustic waves propagate in bulk silicon and are then guided by a 45° silicon mirror into the suspensions in the microchannel; afterwards, the acoustic energy is focused on particles by the confocal lens and reflected by a reflection wall. Parts of the reflected acoustic energy backtrack into the transducer, and acoustic attenuation measurements are characterized for particle detection. Meanwhile, a strong acoustic streaming phenomenon can be seen around the reflection wall, which is used to implement particle manipulation. This platform opens a frontier for on-chip integration of high sensitivity acoustic characterization and localized acoustic manipulation in microfluidics.

show abstract

Investigation of some low ultrasonic absorption liquids

Cited by 37 publications

References 0 publications

Measurement of the viscosity of liquids by near-field acoustics

Measurement of the viscosity of liquids by near-field acoustics

Measurement of ultrasonic velocity and absorption in liquids up 1.5 GHz by the high-resolution Bragg reflection technique

High frequency acoustic on-chip integration for particle characterization and manipulation in microfluidics

Contact Info

Product

Resources

About