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. Author manuscript; available in PMC: 2009 Nov 18.
Published in final edited form as: Nano Lett. 2009 May;9(5):2160–2166. doi: 10.1021/nl9007425

Figure 3.

Figure 3

Photothermal integral time responses of the 90 nm NP suspension as registered by a continuous probe laser beam during the application of a single pump pulse (532 nm, 0.5 ns): (a) fast heating and slow cooling of the suspension at a pump pulse fluence of 0.08 J/cm2 and below evaporation threshold; (b) bubble-specific signal of the opposite sign that shows the expansion and the collapse, a pump pulse fluence of 0.4 J/cm2 is above the evaporation threshold. The ripple patterns were caused by the probe laser noise, and the x coordinate indicates the time from the moment of exposure of NPs to a pump laser pulse.