I am modelling a cell as a particle coated by a layer of a material whose refraction index might change. This layer is to resemble the membrane.
Unfortunately I am not sure on how to model the effect the refraction index of the layer. Specifically what happens after both blue arrows in the previous image.
I am lost regarding how to proceed, and my thesis supervisor, who is a doctor in Physic is unavailable for one month still.
How can the direction change of the laser be modelled?