Acoustic Mach–Zehnder interferometer utilizing self-collimated beams in a two-dimensional phononic crystal

Kaya, Olgun Adem; Çiçek, Ahmet; Salman, Aysevil; Uluğ, Bülent

doi:10.1016/j.snb.2014.06.097

Cited by 30 publications

(20 citation statements)

References 30 publications

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“…2 (b)), an X-shaped pattern emerging from the excitation point is observed within the phononic crystal region. This phenomenon is known as phonon focusing or collimation [27] , [28] . When the collimated phonon beams reach the corners of the phononic crystal, they are converted to fan-shaped wave patterns in the pristine region.…”

Section: Resultsmentioning

confidence: 99%

Refraction, beam splitting and dispersion of GHz surface acoustic waves by a phononic crystal

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Refraction, beam splitting and dispersion of GHz surface acoustic waves by a phononic crystal

et al. 2023

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“…We have introduced the commonly applied liquid phononic crystals sensor concept, featuring a defect. Meanwhile, several reports are available, ranging from proof-of-concept and new designs or concepts [ 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ], to consideration of experimental influences [ 38 , 39 ] and 3D printing [ 40 , 41 ], to the measurement of real samples [ 42 , 43 ]. Typical frequencies range from several hundred kHz to a few MHz, the respective dimensions of the phononic crystal from units of millimetres to 100 µm.…”

Section: Introductionmentioning

confidence: 99%

Periodic Tubular Structures and Phononic Crystals towards High-Q Liquid Ultrasonic Inline Sensors for Pipes

Mukhin

Lücklum

2021

Sensors

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The article focuses on a high-resolution ultrasound sensor for real-time monitoring of liquid analytes in cylindrical pipes, tubes, or capillaries. The development of such a sensor faces the challenges of acoustic energy losses, including dissipation at liquid/solid interface and acoustic wave radiation along the pipe. Furthermore, we consider acoustic resonant mode coupling and mode conversion. We show how the concept of phononic crystals can be applied to solve these problems and achieve the maximum theoretically possible Q-factor for resonant ultrasonic sensors. We propose an approach for excitation and measurement of an isolated radial resonant mode with minimal internal losses. The acoustic energy is effectively localized in a narrow probing area due to the introduction of periodically arranged sectioned rings around the tube. We present a sensor design concept, which optimizes the coupling between the tubular resonator and external piezoelectric transducers. We introduce a 2D-phononic crystal in the probing region for this purpose. The Q-factor of the proposed structures show the high prospects for phononic crystal pipe sensors.

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“…The advantage of using these devices is that any external influence of pressure, or temperature, among others, will affect both the reference and the sample. Kaya et al recently developed a theoretical study about an acoustic phononic crystal Mach–Zender interferometer with two signal paths, one for the reference and one for the sample and could be used as a temperature compensation mechanism [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Differential Phononic Crystal Sensor: Towards a Temperature Compensation Mechanism for Field Applications Development

Arango

Sánchez

Torres

et al. 2017

Sensors

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Phononic crystals are resonant structures with great potential to be implemented in applications as liquid sensors. The use of the symmetry reduction technique allows introducing relevant transmission features inside bandgaps by creating defect modes in a periodic regular structure. These features can be used as measures to quantify changes in the speed of sound of liquid samples that could be related to the concentration of analytes or the presence of pathogens among other interesting applications. In order to be able to implement this new technology in more challenging applications, such as biomedical applications, it is necessary to have a very precise and accurate measurement. Changes in temperature greatly affect the speed of sound of the liquid samples, causing errors in the measurements. This article presents a phononic crystal sensor that, by introducing additional defect modes, can carry out differential measurements as a temperature compensation mechanism. Theoretical studies using the transmission line model and analytes at various temperatures show that the proposed temperature compensation mechanism enhances the performance of the sensor in a significant way. This temperature compensation strategy could also be implemented in crystals with different topologies.

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Acoustic Mach–Zehnder interferometer utilizing self-collimated beams in a two-dimensional phononic crystal

Cited by 30 publications

References 30 publications

Refraction, beam splitting and dispersion of GHz surface acoustic waves by a phononic crystal

Refraction, beam splitting and dispersion of GHz surface acoustic waves by a phononic crystal

Periodic Tubular Structures and Phononic Crystals towards High-Q Liquid Ultrasonic Inline Sensors for Pipes

Differential Phononic Crystal Sensor: Towards a Temperature Compensation Mechanism for Field Applications Development

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