Figure 3:

Simulation of optically driven sample heating. a) Simulation geometry intended to represent a single grid square. The boundaries of the grid square were fixed to be 77 K and sample heating was due to the absorption of a 561 nm laser with a Gaussian beam profile. The amount of energy absorbed and how it was dissipated depended on the various support film material properties. b) Representative isotherms from solving equation 1 for the standard carbon grid illuminated by a Gaussian beam with a peak intensity of 50 W/cm². The red star marks the peak temperature, in this case ~120 K c) Plot of the peak temperature as a function of excitation intensity for the three different support films. The red star is the same as that shown in b.