โ Scribed by Gregg, J. M.
No coin nor oath required. For personal study only.
There are several factors which make the investigation and understanding of nanoscale ferroelectrics particularly timely and important. Firstly, there is a market pressure, primarily from the electronics industry, to integrate ferroelectrics into devices with progressive decreases in size and increases in morphological complexity. This is perhaps best illustrated through the roadmaps for product development in FeRAM (Ferroelectric Random Access Memory) where the need for increases in bit density will require a move from 2D planar capacitor structures to 3D trenched capacitors in the next few years. Secondly, there is opportunity for novel exploration, as it is only relatively recently that developments in thin film growth of complex oxides, selfโassembly techniques and highโresolution โtopโdownโ patterning have converged to allow the fabrication of isolated and wellโdefined ferroelectric nanoshapes, the properties of which are not known. Thirdly, there is an expectation that the behaviour of small scale ferroelectrics will be different from bulk, as this group of functional materials is highly sensitive to boundary/surface conditions, which are expected to dominate the overall response when sizes are reduced into the nanoscale regime.
This feature article attempts to introduce some of the current areas of discovery and debate surrounding studies on ferroelectrics at the nanoscale. The focus is directed primarily at the search for novel sizeโrelated properties and behaviour which are not necessarily observed in bulk. (ยฉ 2009 WILEYโVCH Verlag GmbH & Co. KGaA, Weinheim)
๐ SIMILAR VOLUMES
## Abstract Dielectrophoresis has become a powerful tool for manipulation of various materials, such as metal and semiconducting particles, DNA molecules, nanowires and graphene. This short review is intended to provide the reader with an overview of the recent advances of application of dielectrop