Laser Fabrication of Polymer Ferroelectric Nanostructures for Nonvolatile Organic Memory Devices
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- 作者：Daniel E. Mart铆nez-Tong ; 脕lvaro Rodr铆guez-Rodr铆guez ; Aurora Nogales ; Mari-Cruz Garc铆a-Guti茅rrez ; Francesc P茅rez-Murano ; Jordi Llobet ; Tiberio A. Ezquerra ; Esther Rebollar
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2015
- 出版时间：September 9, 2015
- 年：2015
- 卷：7
- 期：35
- 页码：19611-19618
- 全文大小：440K
- ISSN：1944-8252
文摘
Polymer ferroelectric laser-induced periodic surface structures (LIPSS) have been prepared on ferroelectric thin films of a poly(vinylidene fluoride鈥搕rifluoroethylene) copolymer. Although this copolymer does not absorb light at the laser wavelength, LIPSS on the copolymer can be obtained by forming a bilayer with other light-absorbing polymers. The ferroelectric nature of the structured bilayer was proven by piezoresponse force microscopy measurements. Ferroelectric hysteresis was found on both the bilayer and the laser-structured bilayer. We show that it is possible to write ferroelectric information at the nanoscale. The laser-structured ferroelectric bilayer showed an increase in the information storage density of an order of magnitude, in comparison to the original bilayer.