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Category: computing – Page 4

Curved nanographene with five-, six- and seven-membered rings synthesized in two steps

Nanographenes can be considered molecular fragments of graphene, a 2D conductive material in which carbon atoms are connected in a honeycomb pattern. Because their electronic and photophysical properties vary depending on the size and shape of the molecule, nanographenes are expected to find applications in OLEDs, organic solar cells, organic field-effect transistors and more.

For this, simple methods for synthesizing nanographenes that avoid complex multistep processes are desired. Now, a team of scientists from WPI-ITbM at Nagoya University and RIKEN has established a new two-step annulative π-extension (APEX) method that generates structurally diverse nanographenes. This research is published in the journal Angewandte Chemie International Edition.

New molecular magnet design boosts performance for ultrahigh-density data storage

Researchers at The University of Manchester and the Australian National University have developed a new class of molecular magnets that combines the most successful features of previous designs, resulting in some of the strongest magnetic memory properties reported to date.

The work, published in Nature Communications, centers on single-molecule magnets (SMMs), a class of materials capable of storing magnetic information within individual molecules. These materials are being explored as candidates for future ultrahigh-density data storage technologies, as they offer the potential for information to be stored on a dramatically smaller scale than in conventional magnetic devices.

Controlling the geometry of lanthanide compounds has long been one of the major challenges in molecular magnet design. The researchers have overcome part of that challenge by combining two molecular architectures that had previously delivered strong, but different, magnetic properties.

World’s most endangered tigers born in Greece as zoos build a safety net

SPATA, Greece (AP) — The world’s most endangered tigers have started a family in Greece, offering hope for a predator rapidly vanishing from the wild.

Three 2-month-old Sumatran tiger cubs received identification microchips and their first vaccinations Tuesday at a zoo near Athens, as part of a global effort to build a backup population.

The Sumatran tiger, classified as critically endangered, is found only on the Indonesian island of Sumatra, which is slightly larger than Sweden.

Three quantum phases in chromium-based material hint at a spin-triplet superconductor

Superconductors are materials that conduct electricity without electrical resistance when cooled below a specific critical temperature. These materials have proved promising for the development of various technologies, including medical imaging instruments, particle accelerators, ultrasensitive detectors and quantum processors.

Some superconductors are topological, which means their electronic states exhibit global patterns that remain unchanged under small disturbances. These materials can host Majorana bound states, localized quasiparticle excitations that could be leveraged to reduce errors made by quantum computers.

In recent years, some physicists have been trying to identify materials that could exhibit what is known as spin-triplet superconductivity. In this type of superconductivity, paired electrons have a combined spin of 1, as opposed to the spin of 0 observed in conventional superconductors.

Tiny polymer particles keep water jets stable for longer

Tiny, soft polymer particles—known as microgels—can help to stabilize extremely thin liquid jets. How this works is the finding of a study led by researchers at TU Darmstadt, which has been published in Nature Communications. The findings could be of interest for the development of needle-free medical injection systems.

Microgels are soft polymer particles less than one micrometer in size. They can adsorb at the interface between air and water, where they reduce the surface tension of the liquid. In this respect, their effect is similar to that of conventional surface-active components—so-called surfactants—such as those often found in soap, dishwashing liquid or detergent. However, unlike many conventional surfactants, the microgels used in the study are nontoxic, and their interaction mechanism with the liquid differs significantly.

For their experiments, the scientists generated extremely thin jets of water using surface acoustic waves. A drop of water containing the microgels was used for this purpose. A specially manufactured chip generated the waves at a frequency of around 64 MHz, producing a liquid jet approximately 200 micrometers in diameter from the drop. A high-speed camera recorded the jet formation and extension.

Magento StyleSmuggler zero-day exploited to deploy Linux backdoor

A zero-day vulnerability dubbed “StyleSmuggler” affecting all versions of Magento and Adobe Commerce is being exploited in attacks to deploy a backdoor.

The first exploitation incident was recorded on September 4 on a target running the latest security updates.

E-commerce security company Sansec says that Adobe Enterprise Support confirmed earlier today that it was working on a fix but did not provide a timeline for its release.

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