Disequilibrium · disequilibrium:acoustic-field

Acoustic field

An externally available sound or ultrasound field — an oscillating pressure and particle velocity in a medium. Its intensity can be intercepted by a diaphragm, a piezoelectric element or the carriers in a solid.

symbol p′(t)Classical mechanicsenergy form acousticexergy positivealso: sound, ultrasound, acoustic wave, pressure oscillation, noise

Atlas record: 2 claims reference this disequilibrium — 1 demonstrated and 1 established.

Explorerelations · matrix context · routes · sources · cite

2claims2enumerated routes0routes with complete-composition evidence2candidate routes not searched4cited sources

Relations

drives · 2

Acoustic field—drives→Acoustoelectric effectdemonstrated

a travelling acoustic wave in a piezoelectric semiconductor (CdS, GaAs) or a metal; the dc current follows the wave's direction and is proportional to the absorbed acoustic power

Parmenter 1953 is the theoretical prediction; Weinreich and White 1957 the one experimental observation recorded so far, so the atlas threshold for established (two independent groups, or a review or book) is not yet met.

Acoustic field—drives→Direct piezoelectric effectestablished

an acoustic pressure field stressing a piezoelectric element; the working principle of piezoelectric microphones and many piezoelectric ultrasonic receivers

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

C.01 Thermoelectric C.02 Thermionic C.03 Thermoacoustic C.04 Pyroelectric C.05 Thermogalvanic C.06 Thermomagnetic C.07 Thermophotovoltaic C.08 Heat engine (thermomechanical)C.09 Caloric (magneto/electro/elasto)C.10 Piezoelectric C.11 Flexoelectric C.12 Triboelectric C.13 Electrostatic (variable capacitance)C.14 Electromagnetic induction C.15 Magnetostrictive C.16 Magnetoelectric C.17 Spin caloritronic C.18 Photovoltaic C.19 Photoelectrochemical C.20 Photothermal C.21 Electrochemical C.22 Osmotic / salinity-gradient C.23 Electrokinetic C.24 Turbomachinery C.25 Magnetohydrodynamic C.26 Radiovoltaic C.27 Nuclear heat C.28 Rectenna C.29 Thermochemical C.30 Biological C.31 Fluctuation / information-driven C.32 Photon momentum C.33 Thermodiffusive C.34 Marangoni C.35 Acoustoelectric C.36 Photodiffusive C.37 Thermo-osmotic C.38 Electrohydrodynamic C.39 Radioluminescent C.40 Thermopolarization

Enumerated routes through this · 2

Acoustic field → Acoustoelectric effect → Charge carriers → Electrical work1/3 est · candidate
Acoustic field → Direct piezoelectric effect → Separated surface charge → Electrical work3/3 est · candidate

Cited sources · 4

[1]
R. H. Parmenter. The Acousto-Electric Effect (1953)
Physical Review 89, 990-998 · doi:10.1103/PhysRev.89.990 · crossref ✓ 2026-09-20 · record
[2]
G. Weinreich, H. G. White. Observation of the Acoustoelectric Effect (1957)
Physical Review 106, 1104-1106 · doi:10.1103/PhysRev.106.1104 · crossref ✓ 2026-09-20 · record
[3]
J. F. Nye. Physical Properties of Crystals: Their Representation by Tensors and Matrices (1985)
Oxford University Press · book, no DOI · record
[4]
A. Erturk, D. J. Inman. Piezoelectric Energy Harvesting (2011)
Wiley · doi:10.1002/9781119991151 · crossref ✓ 2026-09-19 · record

Cite this entity

Physical Transformation Atlas (2026). entity disequilibrium:acoustic-field: Acoustic field. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/e/disequilibrium/acoustic-field

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