Modeling molecular effects on plasmon transport: Silver nanoparticles with tartrazine
Modulation of plasmon transport between silver nanoparticles by a yellow fluorophore, tartrazine, is studied theoretically. The system is studied by combining a finite-difference time-domain Maxwell treatment of the electric field and the plasmons with a time-dependent parameterized method number 3 simulation of the tartrazine, resulting in an effective Maxwell/Schrödinger (i.e., classicalquantum) method. The modeled system has three linearly arranged small silver nanoparticles with a radius of 2 nm and a center-to-center separation of 4 nm; the molecule is centered between the second and third nanoparticles. We initiate an x-polarized current on the first nanoparticle and monitor the transmission through the system. The molecule rotates much of the x-polarized current into the y-direction and greatly reduces the overall transmission of x-polarized current. © 2011 American Institute of Physics.
Publication Source (Journal or Book title)
Journal of Chemical Physics
Arntsen, C., Lopata, K., Wall, M., Bartell, L., & Neuhauser, D. (2011). Modeling molecular effects on plasmon transport: Silver nanoparticles with tartrazine. Journal of Chemical Physics, 134 (8) https://doi.org/10.1063/1.3541820