Distinguishing octane grades in gasoline using terahertz metamaterials.
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.
State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China.
J
J
Li
Z
Z
Tian
Y
Y
Chen
W
W
Cao
Z
Z
Zeng
D005742:Gasoline / Q000032:analysis*; D008422:Materials Testing / Q000295:instrumentation / Q000379:methods; D009795:Octanes / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods; D055053:Terahertz Radiation
D005742:Gasoline; D009795:Octanes; C026728:octane