New technique may enable all-optical data-center networks

EurekAlert  June 22, 2020 The rapid growth in the amount of data being transferred within data centres creates challenges for the future scalability of electronically switched data-centre networks. As an alternative photonic integration platforms have been demonstrated with nanosecond-scale optical switching times. However, switching times are limited by the clock and data recovery time. Researchers in the UK have shown that using the measurement and storage of clock phase values in a synchronized network, the data recovery times can be under 625 ps. Their approach uses the measurement and storage of clock phase values in a synchronized network to simplify clock […]

Combining magnetic data storage and logic

Phys.org  June 16, 2020 Researchers in Switzerland built racetrack memory managed to perform logical operations directly within memory element. The racetrack memory elements work by using current pulses to move tiny magnetic domains up and down nanowires that are just a few hundred nanometres thick. In these domains, all the magnetic moments are oriented in the same direction and can thus be used to represent the binary states 0 and 1. They use an electric current to reverse the polarity of the magnetic regions, thereby performing a NOT operation on the stored data. By eliminating the need for the mechanical […]

Lasers Write Data Into Glass

IEEE Spectrum  May 29, 2020 Optical data storage was demonstrated in 2013 by researchers in UK. Under Project Silica, last November Microsoft completed its first proof of concept by writing the 1978 film Superman on a single small piece of glass and retrieving it. Researchers could theoretically store up to 360 terabytes of data on a disc the size of a DVD. The laser’s pulse deforms the glass at its focal point, forming a tiny 3D structure called a voxel makes it possible to represent several bits of data per voxel. Reading data from the glass requires an entirely different […]

Introducing the light-operated hard drives of tomorrow

Phys.org  March 10, 2020 An international team of researchers (Switzerland, Spain) present a method for reversible, light-induced tuning of ferromagnetism at room temperature using a halide perovskite/oxide perovskite heterostructure. They showed that photoinduced charge carriers from the CH3NH3PbI3 photovoltaic perovskite efficiently dope the thin La0.7Sr0.3MnO3 film and decrease the magnetization of the ferromagnetic state, allowing rapid rewriting of the magnetic bit. The method is still experimental, but it may be used to build the next generation of memory-storage systems, with higher capacities and with low energy demands. The research opens avenues for magnetooptical memory devices…read more. TECHNICAL ARTICLE

Storing data in everyday objects

Science Daily  December 9, 2019 DNA storage offers substantial information density and exceptional half-life. An international team of researchers (Switzerland, Israel) devised a ‘DNA-of-things’ (DoT) storage architecture to produce materials with immutable memory. In a DoT framework, DNA molecules record the data, and these molecules are then encapsulated in nanometer silica beads, which are fused into various materials that are used to print or cast objects in any shape. They applied DoT to three-dimensionally print a Stanford Bunny that contained a 45 kB digital DNA blueprint for its synthesis. Then they synthesized five generations of the bunny, each from the memory […]

Molecular eraser enables better data storage and computers for AI

EurekAlert  November 27, 2019 The bottom up approaches for atomic and molecular electronics, quantum computation, and data storage, all rely on a well-developed understanding of materials at the atomic scale. Researchers in Canada have developed a scanning tunneling microscope (STM) charge characterization technique which reduces the influence of the typically perturbative STM tip field for this purpose. Using the technique, they observed single molecule binding events to atomically defined reactive sites. They developed a simplified error correction tool for automated hydrogen lithography and incorporated the molecular repassivation technique as the primary rewriting mechanism in ultra-dense atomic data storage designs. The […]

Molecular thumb drives: Researchers store digital images in metabolite molecules

Science Daily  July 3, 2019 Researchers at Brown University have demonstrated that the metabolome (arrays of liquid mixtures containing sugars, amino acids and other types of small molecules) is an information-rich molecular system with diverse chemical dimensions which could be harnessed for information storage and processing. As a proof of principle, they demonstrated a workflow for representing abstract data in synthetic mixtures of metabolites. They wrote more than 100,000 bits of digital image data into metabolomes and stored that could be decoded with accuracy exceeding 99% using multi-mass logistic regression. These early demonstrations provide insight into some of the benefits […]

Racing Toward Yottabyte Information

IEEE Spectrum  June 26, 2019 The highest prefix in the international system of units is yotta, Y is 10 to the power of 24. We’ll have that many bytes within a decade. And once we start creating more than 50 trillion bytes of information per person per year, will there be any real chance of making effective use of it? It is easier to find new prefixes for large databases than to decide how large is large enough. After all, there are fundamental differences between accumulated data, useful information, and insightful knowledge…read more.

Key obstacles to scaling up DNA data storage

Science Daily  June 3, 2019 To reach practical capacities, new systems for organizing and accessing information are needed. Researchers at North Carolina State University used chemical handles to selectively extract unique files from a complex database of DNA mimicking 5 TB of data and designed and implemented a nested file address system that increases the theoretical maximum capacity of DNA storage systems by five orders of magnitude. The advancements enable the development and future scaling of DNA-based data storage systems with modern capacities and file access capabilities…read more. TECHNICAL ARTICLES

Making steps toward improved data storage

Phys.org  November 7, 2018 Researchers in Japan developed a terahertz pulse generator that delivered ultra-short and highly intense terahertz pulses across a pair of gold antennas. The pulses created an electric field in the material composed of germanium, antimony and tellurium (GST) sample, comparable to that of an electrically switched device. It greatly reduced the heat diffusion because of the extremely short duration of terahertz pulses enabling fine control over the rate and direction of GST crystallization. After a certain point when terahertz pulses were increased, crystal conductivity rapidly sped up instead of rising in line with the increase in […]