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Fundamental
Technology of Ball SAW Device for
Hydrogen
Gas Sensor Established
The New Industry Creation
Hatchery Center research team of Tohoku University, led by
Professor Kazushi Yamanaka (Advanced
materials evaluation and sensing), has
succeeded in a collaborative effort with Toppan Printing Co., Ltd.
and Yamatake Corporation in prototyping the worldfs fastest
wide-range hydrogen gas sensor, with the support of US-based Ball
Semiconductor Inc.
The research
focused upon a new phenomenon that was discovered in relation to
ultrasonic waves propagated on the surface of spherical objects. The
property of surface acoustic waves (SAW) that make multiple
roundtrips around the sphere is specifically applied: in other
words, the amplitude and phase of SAW change while the waves pass
through a thin sensitive film with modified elasticity, due to the
adsorption of gas molecules.
This
achievement was reported by 5 domestic newspapers; The Daily
Yomiuri(Jan.13), The Kahoku Shinpo(Jan.13), Nikkan Kogyo
Shinbun(Jan.17), Nikkei Business Daily (Jan.18) and Kagaku Shinbun (Jan. 20).
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Contact:
Prof. Kazushi
Yamanaka
New Industry Creation
Hatchery Center (NICHe)
Tohoku
University
Tel:
+81-22-795-7357
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