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Plasmonic Metal-Hybrid Hydrogen Sensor Based on Semiconductor Nanocrystal Micro Ring

Published online by Cambridge University Press:  28 December 2017

Da Chuan Wu ,
Wei Guo ,
Poonam Birar  and
Ya Sha Yi
Da Chuan Wu
Affiliation:
Integrated Nano Optoelectronics Laboratory, University of Michigan, Dearborn, MI 48128, USA
Wei Guo
Affiliation:
Integrated Nano Optoelectronics Laboratory, University of Michigan, Dearborn, MI 48128, USA
Poonam Birar
Affiliation:
Integrated Nano Optoelectronics Laboratory, University of Michigan, Dearborn, MI 48128, USA
Ya Sha Yi*
Affiliation:
Integrated Nano Optoelectronics Laboratory, University of Michigan, Dearborn, MI 48128, USA Energy Institute, University of Michigan, Ann Arbor, MI 48109, USA
*
*[email protected]
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Abstract

We have proposed and demonstrated numerically an ultra-small (4×4μm2) hydrogen sensor based on micro ring resonator. With a palladium or platinum layer coated on the inner surface of the micro ring resonator, the device is highly sensitive to the low hydrogen concentration variation and the sensitivity is at least one magnitude order larger than the optical fiber-based hydrogen sensor. We have also investigated the tradeoff between the portion coverage of palladium/platinum layer and the sensitivity. The width of the hydrogen sensitive layer is also studied and the minimum feature width is determined to be the length of the ring waveguide evanescent wave. This ultra-small optical hydrogen sensor will be promising to realize highly compact sensor with integration capability for applications on hydrogen fuel economy.

Keywords

nanostructuresemiconductingsensor
Type
Articles
Information
MRS Advances , Volume 3 , Issue 14: Nanomaterials , 2018 , pp. 717 - 723
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Copyright
Copyright © Materials Research Society 2017 

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References

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