LO MEJOR DEL CIN2 NUESTRAS INVESTIGACIONES MÁS IMPORTANTES
- Apr 06, 2012 Prof. Gustau Catalan coauthor of the Science publication: "Mechanical Writing of Ferroelectric Polarization". H. Lu, C.-W. Bark, D. Esque de los Ojos, J. Alcala, C. B. Eom, G. Catalan, A. Gruverman
- Mar 22, 2012 Dr. José Santiso's group receives the Somiya 2012 award by the International Union of Materials Research Societies (IUMRS).
- Mar 19, 2012 Pedro Gómez-Romero, entrevistado en el número especial de National Geographic sobre Energía.
- Mar 09, 2012 Invited Article at Reviews of Modern Physics by G. Catalan, J. Seidel, R. Ramesh and J. F. Scott
Apr 06, 2012
Prof. Gustau Catalan coauthor of the Science publication: "Mechanical Writing of Ferroelectric Polarization". H. Lu, C.-W. Bark, D. Esque de los Ojos, J. Alcala, C. B. Eom, G. Catalan, A. Gruverman
Ferroelectric materials are characterized by a permanent electric dipole that can be reversed through the application of an external voltage, but a strong intrinsic coupling between polarization and deformation also causes all ferroelectrics to be piezoelectric, leading to applications in sensors and high-displacement actuators. A less explored property is flexoelectricity, the coupling between polarization and a strain gradient. We demonstrate that the stress gradient generated by the tip of an atomic force microscope can mechanically switch the polarization in the nanoscale volume of a ferroelectric film. Pure mechanical force can therefore be used as a dynamic tool for polarization control and may enable applications in which memory bits are written mechanically and read electrically.
BBC News: http://www.bbc.co.uk/news/science-environment-17628145
+ Interview for Science Press + DOI: 10.1126/science.1218693
