Reply To: Compasison between FDTD and quantum mechanics

[Debasish Biswasray]

Thank you for your reply, Afroditi.

I used a mess size of 0.25 x 0.25 x 0.25 nm^3 to resolve the smaller separations. I hope the resolution is fine.

When the nanospheres are getting closer (from 25 nm to 0.5 nm), the peak extinction shifts red (which is a sign of plasmon coupling, according to earlier reports). When the separation is varied from 0.5 nm to 0 nm, the peak gradually blueshifts, which means the coupling between the spheres is reducing. I want to understand: is it true that for such smaller distances, the coupling decreases? If it decreases, then why?