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Category: nanotechnology

Researchers have made a tiny camera, held together with ‘molecular glue’ that allows them to observe chemical reactions in real time.

The device, made by a team from the University of Cambridge, combines tiny semiconductor nanocrystals called and gold nanoparticles using molecular glue called cucurbituril (CB). When added to water with the molecule to be studied, the components self-assemble in seconds into a stable, powerful tool that allows the real-time monitoring of chemical reactions.

The camera harvests light within the semiconductors, inducing electron transfer processes like those that occur in photosynthesis, which can be monitored using incorporated gold nanoparticle sensors and spectroscopic techniques. They were able to use the camera to observe which had been previously theorized but not directly observed.

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Delta Galil Industries, Ltd., a textile manufacturer of branded and private label apparel, is setting up a strategic partnership with Israeli startup Sonovia, a maker of textiles with sustainable and antimicrobial properties, to pilot the use of new fabrics for its product lines. Under the agreement, Sonovia and its machinery manufacturing partner, Brückner Textile Machinery, will install an ultrasonic fabric-finishing applicator at Delta Galil’s innovation center in Karmiel, Israel, to pilot the application of new, eco-responsible fabric finishes offering antimicrobial and anti-odor protection and other traits to products Delta manufactures for its global customers. Delta Galil Industries, founded in 1,975 is a maker of men and women’s underwear, bras, socks, baby clothing, leisurewear and nightwear. The brands it supplies its products for include Schiesser, Eminence, Athena and PJ Salvage. To date, Sonovia has developed two applications for its technology: an anti-bacterial, anti-odor and anti-viral application, and a spray to make textiles water-repellent.

The Ramat Gan, Israel-based startup, founded in2013by Shay Herchcovici and Joshua Herchcovici, uses a patented nanotechnology process developed at Israel’s Bar-Ilan University to embed particles, compounds, and molecules of desired properties directly into textiles, creating a fabric that retains its properties through multiple washings.

The company’s partnership with Delta Galil “constitutes a significant landmark” in Sonovia’s path to commercialize its technology and strengthens Delta Galil’s position as a specialist in high-performance, sustainable manufacturing innovation, the statement said.

“This strategic agreement with Delta Galil constitutes a vote of confidence in Sonovia’s eco-friendly, performance fabric-finishing technology from one of the world’s leading manufacturers of activewear and apparel,” said Sonovia’s chairman and CEO Joshua Herchcovici.

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A hair-like protein hidden inside bacteria serves as a sort of on-off switch for nature’s “electric grid,” a global web of bacteria-generated nanowires that permeates all oxygen-less soil and deep ocean beds, Yale researchers report in the journal Nature. “The ground beneath our feet, the entire globe, is electrically wired,” said Nikhil Malvankar, assistant professor of molecular biophysics and biochemistry at the Microbial Sciences Institute at Yale’s West Campus and senior author of the paper. “These previously hidden bacterial hairs are the molecular switch controlling the release of nanowires that make up nature’s electrical grid.”

Almost all living things breathe oxygen to get rid of excess electrons when converting nutrients into energy. Without access to oxygen, however, living deep under oceans or buried underground over billions of years have developed a way to respire by “breathing minerals,” like snorkeling, through tiny protein filaments called .

Just how these soil bacteria use nanowires to exhale electricity, however, has remained a mystery. Since 2,005 scientists had thought that the nanowires are made up of a protein called “pili” (“hair” in Latin) that many bacteria show on their surface. However, in research published 2019 and 2020, a team led by Malvankar showed that nanowires are made of entirely different proteins. “This was a surprise to everyone in the field, calling into question thousands of publications about pili,” Malvankar said.

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Summary: Researchers have discovered a new molecule that could increase the ultra-fast decision-making capabilities of computers. The simple molecule provides a new electronic circuit element in which complex logic is encoded in nanoscale material properties.

Source: University of Limerick.

An international team of scientists including researchers at University of Limerick in Ireland has discovered a new molecule that could further increase ultra-fast decision making in computers.

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There’s no need to don uncomfortable smartwatches or chest straps to monitor your heart if your comfy shirt can do a better job.

That’s the idea behind “” developed by a Rice University lab, which employed its conductive nanotube thread to weave functionality into regular apparel.

The Brown School of Engineering lab of chemical and biomolecular engineer Matteo Pasquali reported in the American Chemical Society journal Nano Letters that it sewed nanotube fibers into athletic wear to monitor the heart rate and take a continual electrocardiogram (EKG) of the wearer.

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Technion scientists have created a wearable motion sensor capable of identifying movements such as bending and twisting. This smart ‘e-skin’ was produced using a highly stretchable electronic material, which essentially forms an electronic skin capable of recognizing the range of movement human joints normally make, with up to half a degree precision.

This breakthrough is the result of collaborative work between researchers from different fields in the Laboratory for Nanomaterial-Based Devices, headed by Professor Hossam Haick from the Technion Wolfson Faculty of Chemical Engineering. It was recently published in Advanced Materials and was featured on the journal’s cover.

This wearable motion sensor, which senses bending and twisting, can be applied in healthcare and manufacturing.

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LSU Quantum researchers rearrange photon distribution to create different light sources.

For decades, scholars have believed that the quantum statistical properties of bosons are preserved in plasmonic systems, and therefore will not create different form of light.

This rapidly growing field of research focuses on quantum properties of light and its interaction with matter at the nanoscale level. Stimulated by experimental work in the possibility of preserving nonclassical correlations in light-matter interactions mediated by scattering of photons and plasmons, it has been assumed that similar dynamics underlie the conservation of the quantum fluctuations that define the nature of light sources. The possibility of using nanoscale system to create exotic forms of light could pave the way for next-generation quantum devices. It could also constitute a novel platform for exploring novel quantum phenomena.

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Ultrafast electron microscope in Argonne’s Center for Nanoscale Materials. Credit: Argonne National Laboratory.

Ultrafast electron microscope opens up new avenues for the development of sensors and quantum devices.

Everyone who has ever been to the Grand Canyon can relate to having strong feelings from being close to one of nature’s edges. Similarly, scientists at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have discovered that nanoparticles of gold act unusually when close to the edge of a one-atom.

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Devices in the submillimetre range – so-called “nano-supercapacitors” – allow the shrinkage of electronic components to tiny dimensions. However, they are difficult to produce and do not usually incorporate biocompatible materials. Corrosive electrolytes, for example, can quickly discharge themselves in the event of defects and contamination.

So-called “biosupercapacitors” (BSCs) offer a solution. These have two outstanding properties: full biocompatibility, which means they can be used in body fluids such as blood, and compensation for self-discharge behaviours through bio-electrochemical reactions. In other words, they can actually benefit from the body’s own reactions. This is because, in addition to typical charge storage reactions of a supercapacitor, redox enzymatic reactions and living cells naturally present in the blood can increase the performance of a device by 40%.

Shrinking these devices down to submillimetre sizes, while maintaining full biocompatibility, has been enormously challenging. Now, scientists have created a prototype that combines both essential properties.

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The scientists behind the new device were working within the realm of nano-supercapacitors (nBSC), which are conventional capacitors but scaled down to the sub-millimeter scale. Developing these types of devices is tricky enough, but the researchers sought to make one that could work safely in the human body to power tiny sensors and implants, which requires swapping out problematic materials and corrosive electrolytes for ones that are biocompatible.

These devices are known as biosupercapacitors and the smallest ones developed to date is larger than 3 mm3, but the scientists have made a huge leap forward in terms of how tiny biosupercapacitors can be. The construction starts with a stack of polymeric layers that are sandwiched together with a light-sensitive photo-resist material that acts as the current collector, a separator membrane, and electrodes made from an electrically conductive biocompatible polymer called PEDOT: PSS.

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