Extended Data Fig. 2: Calibration of temperature gradient.
(a) A typical pulse of sample temperature measurement in the dummy-setup. (b) The measured temperature gradient at various temperatures for the dummy-setup. (c) The calculated \(\nabla\)T for the cantilever-setup. The power density, \(J=\left(\frac{{\rm{P}}}{{\rm{A}}}\right)\), where P and A stand for the laser power and sample cross-area, respectively.
