The precision "acupuncture" of the polymer film opened the way to a new data storage technology

The precision "acupuncture" of the polymer film opened the way to a new data storage technology

German scientists from the University of Halle-Wittenberg. This material is widely used in industry and is inexpensive in production and environmentally safe. The possibility of recording data on a fluoroplastic film was discovered by accident.

In general, we are talking about polyvinylide fluoride, known in the Russian Federation as fromoplastic-2. This is a polymer commonly used in industry to produce seals, membranes and packaging films. At the same time, PVDF is a Ferroelectric material, which implies the spatial separation of positive and negative charges in material. Theoretically, these properties can be used to record data, but this is hampered by the fact that the crystal structure of PVDF is not well organized: it is a semi-crystal polymer. It simply cannot be streamlined.

A team of researchers accidentally discovered that it is possible to use an atomic-power microscope to establish a certain electrical order in the material. Initially, this is a scan of a sample of material using only a few nanometers in size. If this tip is not used to analyse the structure of the material, but simply to press the material at the right points, then there is a elastic deformation with an electrical charge at these locations. And these charges can be stored in the same way without external maintenance for years.

- explains the authors of the paper.

The scientists do not yet know how to handle the discovery. It is likely that work in the new direction will continue and be expanded.