Related Experiment Videos
[Means of manufacturing platinum microcathodes with a mirrored operating surface]
Meditsinskaia Tekhnika
|January 1, 1977
Summary
Miniaturized cathodes for oxygen sensors were created using arc discharge, producing spherical platinum wire ends. The size of these fused ends depends on wire length and discharge voltage, crucial for sensor performance.
Area of Science:
- Materials Science
- Electrochemistry
- Sensor Technology
Context:
- Manufacturing miniaturized cathodes for membranous PO2 sensors requires precise control over electrode geometry.
- Traditional methods may not achieve the desired spherical working surface for optimal sensor function.
Purpose:
- To develop a method for fabricating miniaturized cathodes with a mirror-like spherical working surface using arc-type discharge.
- To investigate the relationship between manufacturing parameters (wire length, discharge voltage) and the resulting cathode dimensions.
Summary:
- An arc-type discharge in a protective medium was employed to manufacture miniaturized cathodes for membranous PO2 sensors.
- The process resulted in spherical fused ends of platinum wire with diameters ranging from 35 to 120 micrometers.
- Optimal fusion into glass capillary tubes was achieved in the oxidizing zone of a flame.
Impact:
- This technique enables the production of high-quality, miniaturized platinum cathodes essential for advanced PO2 sensor development.
- The controlled spherical geometry enhances the working surface, potentially improving sensor sensitivity and response time.
- Provides a scalable method for fabricating critical sensor components.