Figure 2: Athermal photoreduction of GOs by a single fs pulse.
From: Athermally photoreduced graphene oxides for three-dimensional holographic images
(a) Spectral shift of the two-photon fluorescence of CdSe nanoparticles irradiated by single fs pulses at a variety of pulse energy densities. The dashed line indicates the peak position of the CdSe fluorescence spectra. The insets show the experimental configuration for the focal temperature measurement and extracted temperature increment. (b) Raman spectra of the rGO polymers as a function of the fs pulse fluence. Three dashed lines indicate the D-bands, G-bands and 1,050 cm−1, respectively. X-ray photoemission spectroscopy spectra of GOs before (c) and after (d) photoreduction by a single fs pulse at the pulse fluence of 2 nJ cm−2. Insets are the scanning electron microscope (SEM) images of GOs before (c) and after (d) the photoreduction.
