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Appl Opt. 2012 Jun 1;51(16):3258-62. doi: 10.1364/AO.51.003258.

Distinguishing octane grades in gasoline using terahertz metamaterials.

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State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China.


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.

[Indexed for MEDLINE]

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