Sensitive detection of chlorpyrifos pesticide using an all-dielectric broadband terahertz metamaterial absorber

[Display omitted] •An all-dielectric broadband THz absorber on a highly-doped silicon-based sensing chip was proposed.•It exhibits an interaction efficiency of ∼99 % at 1.33 THz and a broad bandwidth covers 600 GHz of the center frequency.•It is a THz sensor with high sensitivity and stability under...

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