Hello, I would like to check how it is possible to solve for the forces arising from thermophoresis using DEVICE?

I was looking at this paper, from Nature,

http://www.nature.com/lsa/journal/v3/n1/full/lsa20147a.html

and apparently, they used Lumerical to solve for optothermal forces acting on gold nanorods suspended in water. Basically what they did was to produce a plasmonic resonance effect on the gold nanorods by shining a laser on the rods, and observe the Temperature gradients and resultant optothermal forces.

Is there a specific analysis function that enables users to perform such force analysis (similar to the analysis functions in FDTD solutions)? Or is there a way to introduce the Greenâ€™s function approach to obtain the optothermal forces?

Thank you for your help!