Abstract
ZnO is identified as one of the promising coating materials in optical fiber for ammonia gas sensors. In this work, three-dimensional ZnO nanoflowers are fabricated via a facile hydrothermal method and used as sensitive coating materials for optical fiber ammonia gas sensors. Results show that the sensor with ZnO nanoflowers exhibits a high sensitivity of for ammonia concentration ranging from 0 to , which is more than 2.6 times higher than that of the sensor with a coating of ZnO microspheres [].
© 2018 Optical Society of America
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