Correction: Guo, Q.; et al. Comparison of in Situ and ex Situ Methods for Synthesis of Two-Photon Polymerization Polymer Nanocomposites. Polymers 2014, 6, 2037–2050

The authors wish to make the following corrections to this paper [1]. In Figure 4, the unit of CuKa radiation is Å, not µm. The caption of Figure 4 should read: XRD patterns of pure TiO₂ nanoparticles heat-treated at 80 °C, 150 °C, 220 °C, and 250 °C were obtained by using CuKα radiation at λ = 1.5406 Å.

Figure 4. XRD patterns of pure TiO₂ nanoparticles heat-treated at 80 °C, 150 °C, 220 °C, and 250 °C were obtained by using CuKα radiation at λ = 1.5406 Å. (*) shows substrate Incubo peak.

Figure 4. XRD patterns of pure TiO₂ nanoparticles heat-treated at 80 °C, 150 °C, 220 °C, and 250 °C were obtained by using CuKα radiation at λ = 1.5406 Å. (*) shows substrate Incubo peak.