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- Title
Developing a Solid-State pH Sensor for Wagyu-Rumen Monitoring.
- Authors
Lan Zhang; Jian Lu; Hirofumi Nogami; Hironao Okada; Toshihiro Itoh
- 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.
- Subjects
SOLID state detectors; INDIUM tin oxide; METAL oxide semiconductor field; RUMEN (Ruminants); FLUOROPOLYMERS
- Publication
Sensors & Materials, 2016, Vol 28, Issue 12, p1273
- ISSN
0914-4935
- Publication type
Article
- DOI
10.18494/sam.2016.1368