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Category: nanotechnology – Page 212

New skin patch promises comprehensive health monitoring

“” This type of wearable would be very helpful for people with underlying medical conditions to monitor their own health on a regular basis,” co-first author of the study Lu Yin said in a news release.

New wearable device converts body heat into electricity.
“It would also serve as a great tool for remote patient monitoring, especially during the COVID-19 pandemic when people are minimizing in-person visits to the clinic,” Yin, a nano-engineering doctoral student at the University of California, San Diego.

In addition to monitoring chronic conditions like diabetes and high blood pressure, as well as pinpointing the onset of sepsis, the patch could help predict people at risk of becoming severely ill with COVID-19.

Scientists have developed a thin, flexible skin patch, worn on the neck, that can provide all-in-one health monitoring capabilities, including the wearer’s heart rate, blood pressure and glucose levels.

Researchers hack Xbox console to develop nanoscale medical 3D printer

Researchers from the Technical University of Denmark (DTU) have repurposed a component from a Microsoft Xbox 360 to develop a high-resolution large-volume nanoscale 3D printer with various applications in the medical sector.

The team took an optical pick-up unit (OPU) component from an Xbox 360 console to replace a conventional Stereolithography (SLA) optical system, in order to drastically simplify the SLA 3D printing system. With the OPU costing less than $5, the researcher’s solution could potentially increase the affordability of such equipment by thousands of pounds.

“With our 3D printer that can print micro and nanoscale 3D objects, we are able to go from tens of micrometers in printing resolution down to hundreds of nanometers without expensive specialized components,” said DTU PhD Student Tien-Jen Chang and research team member.

Mechanochemical bond scission for the activation of drugs

Stimuli-responsive control of drug activation can mitigate issues caused by poor drug selectivity. Now, it has been shown that mechanical force—induced by ultrasound—can be used to activate drugs in three different systems. This approach has enabled the activation of antibiotics or a cytotoxic anticancer agent from synthetic polymers, polyaptamers and nanoparticle assemblies.

Ingenious ‘Wrinkled’ Graphene Could Be The Most Promising Water Filter Yet

Graphene continues to dazzle us with its strength and its versatility – exciting new applications are being discovered for it all the time, and now scientists have found a way of manipulating the wonder material so that it can better filter impurities out of water.

The two-dimensional material comprised of carbon atoms has been studied as a way of cleaning up water before, but the new method could offer the most promising approach yet. It’s all down to the exploitation of what are known as van der Waals gaps: the tiny spaces that appear between 2D nanomaterials when they’re layered on top of each other.

These nanochannels can be used in a variety of ways, which scientists are now exploring, but the thinness of graphene causes a problem for filtration: liquid has to spend much of its time travelling along the horizontal plane, rather than the vertical one, which would be much quicker.

Efficiently Converting Light Energy Into Surface Waves on Graphene

Dotty graphene and doping: Whatever it takes for Russia’s record plasmonics to shine.

Physicists from MIPT and Vladimir State University, Russia, have achieved a nearly 90% efficiency converting light energy into surface waves on graphene. They relied on a laser-like energy conversion scheme and collective resonances. The paper came out in Laser & Photonics Reviews.

Manipulating light at the nanoscale is a task crucial for being able to create ultracompact devices for optical energy conversion and storage. To localize light on such a small scale, researchers convert optical radiation into so-called surface plasmon-polaritons. These SPPs are oscillations propagating along the interface between two materials with drastically different refractive indices — specifically, a metal and a dielectric or air. Depending on the materials chosen, the degree of surface wave localization varies. It is the strongest for light localized on a material only one atomic layer thick, because such 2D materials have high refractive indices.

Tiny bio-inspired swarm robots for targeted medical interventions

Micro-sized robots could bring a new wave of innovation in the medical field by allowing doctors to access specific regions inside the human body without the need for highly invasive procedures. Among other things, these tiny robots could be used to carry drugs, genes or other substances to specific sites inside the body, opening up new possibilities for treating different medical conditions.

Researchers at ETH Zurich and Helmholtz Institute Erlangen–Nürnberg for Renewable Energy have recently developed micro and nano-sized robots inspired by biological micro-swimmers (e.g., bacteria or spermatozoa). These , presented in a paper published in Nature Machine Intelligence, are capable of upstream motility, which essentially means that they can autonomously move in the opposite direction to that in which a fluid (e.g., blood) flows. This makes them particularly promising for intervening inside the .

“We believe that the ideas discussed in our multidisciplinary study can transform many aspects of medicine by enabling tasks such as targeted and precise delivery of drugs or genes, as well as facilitating non-invasive surgeries,” Daniel Ahmed, lead author of the recent paper, told TechXplore.