Fig. 1. Schematics of the experimental apparatus for capturing carbon nanoparticles. The left figure is the HWCVD reactor with a capturing apparatus. The right figure illustrates how the SiO and carbon membranes are made electrically floating and grounded. Nanoparticles were captured on floating and grounded SiO and carbon membranes under the same HFCVD condition. ‘S’ and ‘C’ in the right figure indicate SiO and carbon membranes, respectively.