Abstract
Plasmons are resonant excitation in metallic films and nanoparticles. For small enough distance between two metallic nanoparticles, plasmon couples between them. Translocation of a single-stranded DNA molecule through the free space between these nanoparticles changes both spectral and temporal properties of the electromagnetic field arrives to the second nanoparticle. Here we simulate plasmon excitation for an Al nanoparticle and at the resonant frequency of the extinction efficiency of this nanoparticle, a TE-polarized plane wave introduced to it while a similar Al nanoparticle is placed 13nm away. Then, the simulations are repeated at the present of the DNA molecule between Al nanoparticles. Our results shows that the system can be used in the next-generation DNA sequencing devices and biophotonic sensors.
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