Ammonia sensing probe using shear horizontal surface acoustic wave technique

被引：0
|
作者：
Shen, CY
Huang, CP
Hsu, KC
Jeng, JS
Chung, MH
机构：
来源：
PROCEEDINGS OF THE 2004 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM AND EXPOSITION | 2005年
关键词：
SH-SAW sensor; L-glutamic acid hydrochloride; limit of detection;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This study investigated an improved shear horizontal surface acoustic wave (SH-SAW) ammonia sensor based on L-glutamic acid hydrochloride. In order to satisfy Barkhausen criteria for oscillation and avoid the mode hopping, it used coupling of modes (COM) theory to design SH-SAW resonator. This SH-SAW sensor presented an excellent reversibility, sensitivity, and repeatability when ammonia was in ppb level. According to the signa I to noise ratio of two, it could estimate limit of detection (LOD) to be 13.53 ppb.
引用
收藏
页码：546 / 548
页数：3
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