Gold supraspheres for host-guest chemistry

Gold nanoparticle-based supraspheres, which are analogues of supramolecular cages and containers, can be used to perform classical host-guest chemistry, according to new experiments by researchers in Israel and Switzerland. Although real-world applications may be a way off, at the laboratory level these materials may be used as soluble systems for better understanding phenomena associated with […]

CMOS-compatible SiC qualifies for quantum technology

Exploiting the quirks of quantum mechanics in real-world technologies – such as quantum communication – requires material systems that enable the transfer and exchange of quantum entanglement between different systems. Now, calculations by researchers in the US indicate that defects in silicon carbide (SiC) – which is CMOS-compatible – may have winning attributes to fit […]

NV centres for long-term 3D data storage

The nitrogen vacancy (NV) centre can be used for long-term information storage. So say researchers at City University of New York–City College of New York who have used optical microscopy to read, write and reset information in a diamond crystal defect. The 2D bit density in this system is comparable to present-day DVD technology but […]

Atom assembler makes defect-free arrays

Researchers at the Institut d’Optique Graduate School at the CNRS and Université Paris-Saclay in France have developed a new way to rearrange cold atoms one by one in a fully ordered array. Their technique could be used to simulate quantum systems using neutral atoms trapped in optical tweezers….. Order from disorder

Engineered spinach detects explosives

By embedding plant leaves with carbon nanotubes, researchers at the Massachusetts Institute of Technology have transformed a plant into a living sensor that can detect chemicals like explosives and then wirelessly relay this information to a handheld device like a smartphone. Engineering electronics into plants is a new and upcoming field of research called nanobionics […]

Collagenous tissue stiffens on the nanoscale

All animals have collagenous tissue, but only echinoderms (for example, sea cucumbers and starfish) have “mutable collagenous tissue” (MCT) that can rapidly change its stiffness on receiving the appropriate neuronal signals. Researchers at Queen Mary University of London and the European Synchrotron Radiation Facility in Grenoble have now studied MCT using synchrotron small-angle X-ray diffraction […]

How to toughen up nanocrystalline metals

Brittle nanocrystalline metals can be made ultrastrong and tough by firing them at extremely high speeds onto a hard target, according to new experiments on silver microcubes by researchers at Rice University and the University of Massachusetts at Amherst. The impact produces an extreme gradient-nano-grained (GNG) structure in the microcubes that has a grain size […]

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