Li J, Tian Z, Chen Y, Cao W, Zeng Z
State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China.
Appl Opt. 2012 Jun 1;51(16):3258-62. doi: 10.1364/AO.51.003258.
Distinguishing octane numbers of commercial gasoline is experimentally demonstrated by use of single split-ring resonator metamaterials functioning at terahertz frequencies. The differences in frequency-dependent absorption coefficients and refractive indices of various grades of gasoline lead to a modification in the surrounding dielectric environment and consequently the resonance properties of the planar metamaterials. This consequently enables a distinct frequency shift in the inductive-capacitive electric dipolar resonances. This paper reveals that such metamaterial arrays, as highly sensitive chemical sensors, have promising potential in petroleum industrial applications.
利用在太赫兹频率下工作的单开口环谐振器超材料，通过实验证明了商用汽油的区分辛烷值。不同等级汽油的频率相关吸收系数和折射率的差异导致周围介电环境的改变，从而导致平面超材料的共振特性发生变化。这进而使得电感 - 电容电偶极共振产生明显的频率偏移。本文表明，这种超材料阵列作为高灵敏度化学传感器，在石油工业应用中具有广阔的潜力。
