Abstract
We have developed a solid-type pH sensor for dairy wagyu-rumen measurements. The pH sensor is composed of a sensing electrode of indium tin oxide (ITO) film and a metal-oxide-semiconductor field-effect transistor (MOSFET). In the solid-state sensor structure, the ITO electrode is a separated gate of the FET and the ITO electrode can be patterned with a suitable capture structure for the wagyu-rumen environment. A sensor system with a compact size can be fabricated by eliminating the reference solution. The pH sensors have a sensitivity of 10-15 μA/pH under different sensing contact areas from 12 to 78 mm2. Long-term tests with interval experiments have been completed in 18 d, and the results demonstrate that the pH sensor has a stable performance for rumen pH measurements over a long time.
Original language | English |
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Pages (from-to) | 1273-1281 |
Number of pages | 9 |
Journal | Sensors and Materials |
Volume | 28 |
Issue number | 12 |
DOIs | |
Publication status | Published - Jan 1 2016 |
All Science Journal Classification (ASJC) codes
- Instrumentation
- Materials Science(all)