Improving information density in ferroelectric polymer films by using nanoimprinted gratings

Martínez-Tong, D. E.; Soccio, M.; García-Gutiérrez, M. C.; Nogales, A.; Rueda, D. R.; Alayo, N.; Pérez-Murano, F.; Ezquerra, T. A.
May 2013
Applied Physics Letters;5/13/2013, Vol. 102 Issue 19, p191601
Academic Journal
In this work, well-defined low aspect ratio nanostructures based on nanogratings on thin films of poly(vinylidene fluoride-trifluoroethylene) copolymers were prepared. By using these nanogratings, an improved management of writing and reading information of about 500 Gbit/in.2 (0.01 bit/nm2) can be reached as revealed by Piezoresponse Force Microscopy. Structural investigation by means of X-ray diffraction techniques indicates that the physical confinement generated by nanoimprint promotes the development of smaller and edge-on oriented crystals. Our results evidence that one-dimensional nanostructuring can be a straightforward approach to improve the control of the polarization in ferroelectric polymer thin films.


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