A new type of polymer, inspired by ancient clay tablets, could revolutionize the field of data storage. Australian researchers have developed an inexpensive material capable of storing information at high density, while being reusable and eco-friendly.
This polymer, composed of sulfur and dicyclopentadiene, allows data to be encoded in the form of micro-indentations at the nanoscale. Using an atomic force microscope for now, scientists can write, read, and erase this information repeatedly, offering an alternative to traditional hard drives.
One of the major advantages of this material lies in its ability to be erased quickly. In ten seconds at 140 degrees Celsius (284°F), the data is erased, allowing immediate reuse of the medium. This characteristic makes it an ideal candidate for applications requiring frequent write and erase cycles.
Unlike previous technologies explored by giants like IBM or Intel, this polymer has a simple and inexpensive composition, making it accessible for large-scale production, a significant advancement in a sector seeking sustainable solutions. However, a simpler and more accessible reading and writing device than an atomic force microscope still needs to be developed, and scientists are working on it.
The researchers have also demonstrated that this polymer enables ternary encoding, significantly increasing storage density compared to traditional binary systems. This innovation could meet the growing needs for data storage, particularly in the field of artificial intelligence.
The team at Flinders University is considering using lasers to erase data, an energy-efficient method. This approach could pave the way for industrial applications while reducing the environmental impact of data storage.
a) VTESPA 300 probe tip used to create precise indentations.
b) AFM image of the nanopatterned surface of 50-poly(S-r-DCPD) with a calculated data density of 0.9 Tb per square inch.
c) AFM image of the nanopatterned surface of 50-poly(S-r-CPD) with the same calculated data density.
d) Mechanical storage of a phrase ("a secret") encoded in binary on 50-poly(S-r-DCPD) (1 character: 7050 nm²).
e) Mechanical storage of a word ("secret") encoded in ternary on 50-poly(S-r-DCPD) (1 character: 1627 nm²).
This discovery is part of a global trend aimed at developing more efficient and environmentally friendly storage solutions. With its unique properties, this polymer could well become a cornerstone of the technology industry in the coming years.
Ternary encoding in data storage
Ternary encoding is a method of storing information that uses three distinct states instead of the traditional two (0 and 1) of binary encoding. This approach increases the density of stored data, as each unit of information can represent three possible values.
In the context of the polymer developed by Flinders University, ternary encoding is achieved by exploiting the depth of micro-indentations. Each indentation can have three depth levels, multiplying the amount of information stored compared to a classic binary system.
This technique is particularly advantageous for applications requiring large storage capacity. It also reduces the physical space required to store data while optimizing energy efficiency.
Ternary encoding represents a major advancement in the field of data storage, offering a more efficient and sustainable alternative to current technologies. Its adoption could transform the technology industry in the coming years.
What is an atomic force microscope?
An atomic force microscope (AFM) is a high-precision instrument used to visualize and manipulate surfaces at the nanoscale. Unlike optical microscopes, it does not rely on light but on a fine probe that scans the surface to measure its physical properties.
This tool allows for detailed three-dimensional images, revealing details invisible to the naked eye. It is widely used in scientific research to study materials, molecules, and even individual atoms, offering exceptional resolution.
In the context of research on the data storage polymer, the AFM was essential for creating and reading micro-indentations. The microscope's probe can both mark the material and detect depth variations, enabling precise encoding of information.
The AFM is a versatile and indispensable tool in the fields of nanotechnology, biology, and materials science. Its use in the development of new polymers illustrates its key role in technological innovation.
Article author: Cédric DEPOND