Figure 1
From: Direct Laser Writing of Nanodiamond Films from Graphite under Ambient Conditions
the setup of confined pulse laser deposition (CPLD) and representative optical images of obtained carbon films.
(a) Schematic diagram of the setup for CPLD. A pulsed laser beam is directed to pass through a beam diffuser to uniform its intensity distribution. A focusing lens is used to control the final spot size of laser beam. A homemade frame (not shown here) guaranteed close contact between the confinement, graphite coating and backing plate. When the laser beam transmits through the transparent layer and irradiates the coating layer, graphite vaporizes instantly and ionizes into hot plasma. The explosive plasma is bounced by the confinement and generates a localized high-temperature high-pressure environment. (b) and (c) are typical optical microscope pictures of amorphous carbon and nano-diamond films, respectively. Magnification: 10×. (d) Optical picture of spot array of semitransparent and conductive carbon films.
