Nanoscale polarization manipulation and imaging of ferroelectric Langmuir-Blodgett polymer films

Polarization patterning by laser-induced phase change in ferroelectric polymer films

Polarization patterns were written on ferroelectric poly(vinyl­ idene-trifluoroethylene) copolymer Langmuir– Blodgett films by heating into the paraelectric phase by laser illumination us­ ing two methods. In the first method, patterns were produced by direct writing by a focused continuouswave laser beam that was moved across the sample. This method affords the great­ est flexibility. In the s...

Effect of thermal annealing on ferroelectric domain structures in poly(vinylidene-fluoride-trifluorethylene) Langmuir-Blodgett thin films

Effect of thermal annealing on ferroelectric domain structures in poly(vinylidene-fluoride-trifluorethylene) Langmuir-Blodgett thin films" (2014). Stephen Ducharme Publications. Paper 95. We report a piezo-response force microscopy study of the effect of thermal annealing on ferroelec-tric domain structures in 6 to 20 monolayer (11 to 36 nm) polycrystalline poly(vinylidene-fluoride-trifluorethy...

Nanoscale domain patterns in ultrathin polymer ferroelectric films.

High-resolution studies of domain configurations in Langmuir-Blodgett films of ferroelectric polymer poly(vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), have been carried out by means of piezoresponse force microscopy (PFM). Changes in film thickness and morphology cause significant variations in polarization patterns. In continuous films and nanomesas with relatively low thickness/grain ...

Two-Dimensional Ferroelectrics

The investigation of the finite-size effect in ferroelectric crystals and films has been limited by the experimental conditions. The smallest demonstrated ferroelectric crystals had a diameter of 200 A and the thinnest ferroelectric films were 200 A thick, macroscopic sizes on an atomic scale. Langmuir ± Blodgett deposition of films one monolayer at a time has produced high quality ferroelectri...

Ferroelectric nanomesa formation from polymer Langmuir-Blodgett films