| Autor: |
Noritaka Nakaso, Kazushi Yamanaka, S. Akao, K. Noguchi, Toshihiro Tsuji, T. Fukiura, N. Takeda, Y. Ebi, Hidekazu Tanaka, Takuji Abe, D. Sim, Tsuyoshi Mihara, Naoya Iwata |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference. |
| DOI: |
10.1109/sensor.2007.4300691 |
| Popis: |
SAW(surface acoustic wave) excited on a spherical surface under a specific condition is naturally collimated, realizing ultra-multiple roundtrips along an equator of the sphere. The ball SAW hydrogen gas sensor is based on this newly discovered phenomenon, and uses a very thin Pd-Ni alloy sensitive film. The detection range for hydrogen gas was 10 ppm to 100% and the response time was less than Is for 3.0% hydrogen concentration in nitrogen gas, evaluated by using a newly developed digital quadrature detector (DQD). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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