Liquid-immersible electrostatic ultrasonic transducer
Abstract
A broadband megahertz range electrostatic acoustic transducer for use in a liquid environment is described. A liquid tight enclosure includes a metallic conducting membrane as part of its outside surface and has a means inside the liquid tight enclosure for applying a tension to the membrane and for mounting an electrode such that the flat end of the electrode is aproximately parallel to the membrane. The invention includes structure and a method for ensuring that the membrane and the flat end of the electrode are exactly parallel and a fixed predetermined distance from each other.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- January 1982
- Bibcode:
- 1982nasa.reptS....C
- Keywords:
-
- Electrostatic Probes;
- Liquids;
- Submerging;
- Ultrasonic Wave Transducers;
- Broadband;
- Capacitors;
- Electrodes;
- Parallel Plates;
- Patents;
- Electronics and Electrical Engineering