Abstract: | Polarization patterns were written on ferroelectric poly(vinylidene-trifluoroethylene) copolymer Langmuir–Blodgett films by
heating into the paraelectric phase by laser illumination using two methods. In the first method, patterns were produced by
direct writing by a focused continuous-wave laser beam that was moved across the sample. This method affords the greatest
flexibility. In the second method, the patterns were generated simultaneously with a pulsed laser using a beam interference
method. This method produces highly regular patterns quickly over large areas and affords higher patterning resolution. The
patterns produced by both methods could be erased and rewritten, making this technique useful for producing reconfigurable
nonvolatile memories, infrared imaging sensors, or acoustic imaging transducers. |