Coupling and confinement of current in thermoacoustic phased arrays

Tatnell, David M.; Heath, Mark; Hepplestone, Steven P.; Hibbins, Alastair P.; Hornett, Samuel M.; Horsley, S. A. R.; Horsell, D. W.

doi:10.1126/sciadv.abb2752

Cited by 5 publications

(5 citation statements)

References 28 publications

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“…As such, the elements can be treated as independent acoustic sources. There is, however, electrical coupling, depending on the circuit configuration [8]. The operation of the thermophonic bridge is based upon this coupling.…”

Section: Thermophonic Bridge Theorymentioning

confidence: 99%

“…To date, the majority of thermophone research has focused on addressing the relatively poor conversion efficiency of source power into sound [3][4][5]. However, for many potential applications this efficiency is irrelevant: the distinctive mechanism of sound production has been shown to already have use in non-destructive evaluation [6], active noise cancellation [7], signal heterodyning [2], and ultrasonic phased arrays [8].…”

Section: Introductionmentioning

confidence: 99%

“…The lack of internal electrical connections is useful in situations where individual electrical contact with conducting branches may not be feasible. The frequency dependence of the spatial response of the sound also offers opportunities to enhance precision via beam shaping [8].…”

Section: Introductionmentioning

confidence: 99%

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A thermophone-based bridge circuit for the measurement of electrical and thermal properties of thin films

Tatnell

Heath

Hibbins

et al. 2022

J. Phys. D: Appl. Phys.

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Sound can be generated via modulated Joule heating of thin conductive films. Its amplitude and phase are sensitive to the electrical and thermal properties of the film. Here we show how such sound can be used to measure and quantify these properties. In particular, we experimentally determine the relative conductances of electrical paths in a multi-branched thin film, which can then be used to find the temperature dependence of the film conductance. This is achieved by nullifying the sound at a given point in the sound field using simple voltage control. This method, essentially an acoustic analogue of an electrical bridge circuit, is advantageous since it allows for electrical and thermal properties to be measured simultaneously. These attributes benefit the characterisation of complex circuit architectures, as well as thermal sensing.

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Section: Thermophonic Bridge Theorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A thermophone-based bridge circuit for the measurement of electrical and thermal properties of thin films

Tatnell

Heath

Hibbins

et al. 2022

J. Phys. D: Appl. Phys.

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“…In this regard, other phenomena such as conduction [13], harvesting [14], signal translation and transductions, [15] encryption [16] of different modes of energy [17] are studied. Within these functions are involved physical and chemical properties such as thermal [18], electronic [19], photonics [20], quantum [21], and luminescence mechanism [22]. In this context, it is noted that semiconductor materials are related to the dual properties of conductors, such as copper, and insulators, such as glass, depending on their intrinsic electronic constitutions and media.…”

Section: Introductionmentioning

confidence: 99%

Quantum Semiconductors Based on Carbon Materials for Nanophotonics and Photonics Applications by Electron Shuttle and Near Field Phenomena

Bracamonte

2023

Recent Prog Mater

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This review intended to resume key Research reports and publications that open many themes and topics related to Carbon-based semiconductors and Quantum emitters. The Design and synthesis of highly pure materials such as Graphene, Carbon Nanotubes, fullerenes, and other Carbon-based allotropes were shown. They presented their most important and promising properties concerning new studies and developments in photonics. Carbon-based Quantum dots, semiconductors, and higher sized Nanoplatforms allowed us to discuss fundamental studies and perspectives within varied applications. In this context, relevant developments from literature related to electron transfer within various targeted processes, where energy and light transfers occurred through different optical active materials and platforms, were highlighted and discussed. Therefore, many approaches that tuned the desired Optical active properties were shown. Thus, Hybrid materials from single Quantum and Nanoplatforms towards modified substrates were incorporated within varied media such as colloidal dispersions, solid devices, and waveguides. Moreover, Heterojunctions and applications such as energy harvesters and emitter devices were also presented. This manner highlighted varied topics of Photonics' leading current status, perspectives, and implications in Nanophotonics, Quantum photonics, and Optical lenses. Further views and commentaries about Green Photonics were presented as well.

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“…Based on the complex system theory, various mitigation theories were discussed by Sujith [14]. Tantell [15] investigated the coupling and controlling of current thermoacoustic staged clusters. The work discussed that clusters of these sources produce sound special to this instrument.…”

Section: Introductionmentioning

confidence: 99%

Effect of acoustic energy on onset of fire propagation phenomenon

Shekhar

Thombare

Malhotra

2021

Journal of Energy Systems

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Scholars and scientists have been making efforts to discover ways to control and lessen the resonance of concurrent fires such as forest fires, and various space fires; however, no potential solutions have been concluded from their studies so far. The origin of these types of fires concerns the unstable nature of the flames and the considerable unpredictability associated with them. This work led us to do proper experimentation for the effect of sound on the spreading of the flames. Sound energy as a wave is always accompanied by compression and rarefaction. As an external effect, sound in the immediate vicinity of spreading flame can affect the flame spread rates. Appreciable work had been carried out however; the effect of sound on flames in a purely natural convective environment is an aspect yet to be thoroughly understood. Flame spread rate is a direct indication of forwarding heat transfer from burning to non-burning region. Formation of localized pressure and velocity fields occurs around the pilot fuel by the presence of sound waves. Change in heat transfer may results in increment or decrement in spread rates, when compared with one without sound. The present work attempts physical insight into the effect of sound frequency of intermediate range (3500 Hz to 7500Hz) on the spreading of flames in different configurations coupled with external sources. Results advocate the noteworthy impact of acoustics on the fire propagation phenomenon in distinct modes. Experimentation have revealed that acoustics has a critical influence on fire propagation, reducing the spread rate by 100 percent in a unilateral configuration.

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Coupling and confinement of current in thermoacoustic phased arrays

Cited by 5 publications

References 28 publications

A thermophone-based bridge circuit for the measurement of electrical and thermal properties of thin films

A thermophone-based bridge circuit for the measurement of electrical and thermal properties of thin films

Quantum Semiconductors Based on Carbon Materials for Nanophotonics and Photonics Applications by Electron Shuttle and Near Field Phenomena

Effect of acoustic energy on onset of fire propagation phenomenon

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