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Ammonia adsorption-induced change in permittivity of zeolite Y in millimeter-wave band
Sensors and Actuators A: Physical ( IF 4.6 ) Pub Date : 2020-01-20 , DOI: 10.1016/j.sna.2020.111852
Fangxin Li , Hua Wu , Changzhou Hua , Yangong Zheng

Millimeter wave is a prominent topic for next-generation communication system. To develop functional materials to be used in sensors operated in the millimeter-wave, it is necessary to obtain the variation in the permittivity of the materials. In this study, the effect of ammonia adsorption on the permittivity of zeolite Y in the millimeter-wave of 60–90 GHz is investigated. The results indicate that the ammonia adsorption increases the permittivity of zeolite Y. Specifically, the permittivity change of the gas concentration resulted in 0.025/100 ppm. Based on the characterizations and calculation, ammonia adsorption in zeolite Y stretches the bond between mobile cations and zeolite framework, which results in an increase in the ionic dipole moment of the zeolite. This study provides a fundamental insight on gas sensing materials for millimeter-wave sensors.



中文翻译:

毫米波波段氨吸附引起沸石Y介电常数的变化

毫米波是下一代通信系统的一个突出主题。为了开发在毫米波下工作的传感器中使用的功能材料,必须获得材料的介电常数的变化。在这项研究中,研究了氨吸附对60-90 GHz毫米波中Y沸石介电常数的影响。结果表明,氨吸附增加了沸石Y的介电常数。具体而言,气体浓度的介电常数变化为0.025 / 100ppm。根据表征和计算,Y型沸石中的氨吸附作用会拉伸流动阳离子与沸石骨架之间的键,从而导致沸石的离子偶极矩增加。

更新日期:2020-01-20
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