Reply To: Average temperature rise calculation in Diabolo antenna plasmonic heat generation

[Guilin Sun]

For material change, it is reasonable to have temperature change since the material may have quite different thermal properties. For example if one is more conductive and the other is more resistive, the later can accumulate higher temperature.
As for the the equation 0.0413*(Tsim - 300), the online text mentions that:
By comparing the ratio of the illuminated and unilluminated area, the increment in average surface temperature is found to be equal to 0.0413*(Tsim- 300).
This means this antenna is not illuminated fully. The illuminated has 2583 antennae, so I calculated
2583*(0.34/80)^2=0.0466
However, this assumes top-hat illumination but the actual illumination is a Gaussian beam. Thus at the edge of the 2583 antennae the actual temperature is lower. You could use such Gaussian beam to weight the temperature. I hope this helps.