摘要
通过研究聚苯乙烯三维光子晶体的力敏性质,讨论了不同压强作用下聚苯乙烯三维光子晶体的晶面间距、Bragg衍射峰与归一化频率之间的关系：随外加压强的增大,晶面间距减小;随归一化频率的增大,Bragg衍射峰随之蓝移。计算表明,在外加压强0~41.3 MPa范围内,外加压强与归一化频率之间呈简单的线性对应关系;这就提供了通过测量归一化频率就可以感知压强的大小,从而验证了制造聚苯乙烯三维光子晶体传感器应变片的可行性。
The relationships between the interplanar spacing, Bragg diffraction peak and normalized frequency under pressure were discussed by studying the pressure sensitivity properties of the three-dimensional polystyrene photonic crystals. It is shown that the interplanar spacing will decrease as the pressure increases,and the normalized frequency will increase with the Bragg diffractive peak blue-shifted. The result shows that there is a simple linear relationship between the pressure and the normalized frequency in the pressure rang from 0 to 41.3 MPa. This makes it possible to know the pressure by measuring normalized frequency. Accordingly,the pressure sensor made of the three-dimensional polystyrene photonic crystals is possible.
出处
《传感技术学报》
CAS
CSCD
北大核心
2008年第5期773-776,共4页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金资助(10463001)
关键词
压力传感器
光子晶体
力敏性质
晶面间距
Bragg衍射峰
归一化频率
pressure sensor
photonic crystals
pressure sensitivity properties
interplanar spacing
Bragg diffraction peak
normalized frequency
