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Nanotechnology Spotlights

Electromagnetic interference shielding with graphene composites for 5G-and-beyond communication technologies

graphene-EMI-shieldingAny working electronic device is the source of electromagnetic (EM) radiation. Device miniaturization and a consequent increase in the heat and electromagnetic (EM) wave emission in the electronic systems make the simultaneous heat management and electromagnetic interference (EMI) shielding crucially important. New research shows that the extremely high thermal conductivity of graphene and good electrical conductivity, even...

Sep 28, 2020

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Turning tiny algae into living micromotors controlled by light (w/video)

bacterial-nanomotorResearchers have demonstrated the creation of a living micromotor with multifunctional capability. The distinctive feature of this device is that it doesn't require synthetic materials and therefore avoid the problems of energy consumption and waste production generated during material synthesis. Using microalgal Chlamydomonas reinhardtii cells as the sole material, the scientists made living and multifunctional micromotors...

Sep 23, 2020

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4D nanomedicine based on biodegradable and biocompatible nanoalloys: difficult as catching a comet!

cometImagine catching a comet. Now imagine the comet is as small as a few billionths of meters and it is made of elements from the periodic table that do not like each other; whose fate is that of separate in space and dissolve in biological environments or just in air. Before this happens, the elements are trapped in what is called a non-equilibrium alloy nanoparticle. Since this nanoalloy changes over time, it is not enough to...

Sep 21, 2020

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Nanostructured surface inactivates SARS-CoV-2 coronavirus within six hours

nanostructured-surfaceResearchers have successfully produced durable antiviral surfaces that inactivate SARS-CoV-2 within 6 hours. In contrast, on various non-nanostructured surfaces or smooth surfaces, the SARS-COV-2 virus remained viable for up to 48 hours. These results provide evidence that surfaces that are structured with specific nanoscale surface features are effective in preventing SARS-CoV-2 and the subsequent environmental spread. Such...

Sep 18, 2020

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Applying machine learning to nanophotonic design efforts

data-modellingA major challenge for nanophotonics engineers is the wide range of optical responses that metamaterials and other nanoplasmonic structures can generate. In the past few years, machine learning has emerged as a powerful tool for sifting through this vast universe of possible design parameters to aid the design of nanophotonic devices tailored for specific applications. A novel approach uses a type of neural network called a...

Sep 17, 2020

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Direct printing of wearable health sensors onto skin

wearable-electronicsSkin-interfaced, wearable electronics have attracted significant attention due to their unique roles in preventative monitoring, diagnostic confirmation, and convenient therapeutic options. The ultimate application of these bio-integrated devices for practical and convenient applications hinges on the seamless integration of on-body sensors with wireless transmission modules. As a promising direction toward this class of integrated...

Sep 15, 2020

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Topological quantum phase in 2D MoTe2 induced by light

energy-surfaceResearchers have provided an example of on-demand control of quantum phenomena to design the quantum materials. By state-of-the-art quantum mechanical simulations, they find that a two-dimensional transition-metal ditelluride, MoTe2, can realize a structural phase transition from the semiconducting phase to the topological phase triggered by photoexcitation of carriers alone. The sub-picosecond phase transition can be controlled...

Sep 14, 2020

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Bottom-up fabrication of nanoelectronics with DNA nanotechnology

DNA-templatesDNA is probably the most programmable biomaterial for creating a wide range of rationally designed and functionally enhanced nanostructures. The sophisticated, programmable, and addressable DNA nanostructures are strong candidates for constructing nanoelectronic devices. The size of DNA molecules is also key: DNA double-helix has a neighboring base pair distance of 0.34 nm and a diameter of 2.1 - 2.6 nm a, and thus DNA complex-based...

Sep 10, 2020

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The GoNano project: Governing nanotechnologies through societal engagement

GoNano-logoThe EU-funded GoNano project explored how co-creation can be used to enhance the responsiveness of nanotechnology research and innovation. Responsiveness is understood as the capacity and willingness of researchers and developers to integrate societal considerations in the early stages of technology development. Over the course of three years, GoNano brought together citizens, civil society organizations, industry, researchers,...

Sep 09, 2020

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Eliminating biofilms with self-propelled photothermal nanoswimmers

nanoswimmerBiofilm formation is an important adaptation and survival strategy commonly employed by bacteria but, unfortunately, a major cause for infections in humans. Researchers have now demonstrated the safe removal of in vivo bacterial biofilms through artificial nanomotors driven by near-infrared laser light. This is the first demonstration of a self-propelled antibiofilm platform capable of conducting photothermal and antibiotic...

Sep 08, 2020

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