Related Experiment Video
Updated: Jul 7, 2026

A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
High sensitivity and high capacitance of the cylindrically shaped w-membrane hydrophone
1Department of Electronics, Peking University, Beijing 100871, P. R. China.
Abstract:
In hydrophone designs, intelligent use of structural effects is the key to obtaining high sensitivity. The uses of the moonie and spring structures are good examples of this approach. These transducers can be regarded as mechanical stress converters and amplifiers by which the hydropressure is transferred into a desired stress mode and amplified in magnitude for elastoelectric conversion. In this paper, a structure referred to as the w-membrane is introduced for hydrophone construction. By combining a cylindrical design with the w membrane structure, a hydrophone with very high sensitivity is designed. In addition, high capacitance is another advantage of this configuration. The analysis is carried out based on the concepts of stress conversion and amplification, and numerical results are presented.
Related Concept Videos
Potentiometry: Membrane Electrodes
Spherical and Cylindrical Capacitor
Conventionally, considering the symmetry, the electric field between the concentric shells of a spherical capacitor is directed radially outward. The magnitude of the field, calculated by...
Hair Cells
The Cochlea

