Abstract
We investigate the transmission characteristics of a one-dimensional metallic grating covered by a reduced cytochrome (Cyt) [Formula: see text] molecule layer by using the finite-difference time-domain (FDTD) method. It is found that the introduction of reduced Cyt [Formula: see text] molecule layer leads to a transmission dip due to the plasmon resonance energy transfer (PRET) from metallic grating to Cyt [Formula: see text] molecules. The transmission dip depth can be controlled by the period of metallic grating, the width and length of slit, and the Cyt [Formula: see text] molecule layer number, while the transmission dip wavelength is unchanged with these parameters. The findings expand our understanding of the PRET phenomenon and have potential applications in molecule identification and detection.
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