Category: Nanotech
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Carbon nanotubes and the sustainability puzzle
Nov 27, 2023 (Nanowerk News) An international team of researchers receives over $4M to advance understanding of carbon nanotube synthesis and its potential for producing industrial materials more sustainably. The foundation’s $1.9M Kavli Exploration Award in Nanoscience for Sustainability sparked an additional $2.2M from Carbon Hub to pursue this important research. The collaboration is led…
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From skyrmions to hopfions
Nov 27, 2023 (Nanowerk News) Exotic magnetic structures such as skyrmions are also known as topological particles. Because they can be easily moved within a crystal, they are envisioned as promising information carriers of the future. Scientists from Jülich, China and Sweden have now created and observed for the first time a stable hopfion in…
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New study shows how heat can be used in computing
Nov 27, 2023 (Nanowerk News) Physicists at Martin Luther University Halle-Wittenberg (MLU) and Central South University in China have demonstrated that, combining specific materials, heat in technical devices can be used in computing. Their discovery is based on extensive calculations and simulations. The new approach demonstrates how heat signals can be steered and amplified for…
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Ultrasensitive multifunctional electronic skin mimics spider skin to enable resilient robotics
Nov 27, 2023 (Nanowerk Spotlight) Developing electronic sensor skins that can mimic the remarkable sensory capabilities of natural skin has proven extremely challenging. Past electronic skin attempts focused mainly on human-centered wearables, lacking the hardy resilience for applications in emerging fields like robotics and bio-integrated devices where exposure to extreme environments is inevitable. Significant barriers…
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Using Josephson junctions to control the flow of a supercurrent
Nov 27, 2023 (Nanowerk News) RIKEN physicists have created a superconducting diode—a device that allows a supercurrent to flow in one direction but not the other (Nature Physics, “Scanning electron microscopy image of the device, which uses two Josephson junctions to control the supercurrent flowing through one to the other”). While not the first time…
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Lightly counting membrane proteins in native nanodiscs
To determine the physiologically relevant oligomeric form of membrane proteins is extremely challenging. Now an elegant method of counting the oligomers in membrane proteins in near-native states is presented, using photobleaching and nanodiscs formed directly from cellular membranes. Nearly a third of all proteins within a cell are associated with membranes. These proteins perform diverse…
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Proton and molecular permeation through the basal plane of monolayer graphene oxide
Bunch, J. S. et al. Impermeable Atomic Membranes from Graphene Sheets. Nano Lett. 8, 2458–2462 (2008). Article ADS CAS PubMed Google Scholar Sun, P. Z. et al. Limits on gas impermeability of graphene. Nature 579, 229–232 (2020). Article ADS CAS PubMed Google Scholar Hu, S. et al. Proton transport through one-atom-thick crystals. Nature 516, 227–230…
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Toward steering the motion of surface rolling molecular machines by straining graphene substrate
Computational and theoretical aspects of directed motion The simulations of the motion of nanotruck on strain gradient surface indicate directed motion of the nanomachine at the temperature of 300 K. According to Fig. 2, the nanocar moves from the left side of the substrate, which has the maximum strain, to the unstrained end of the…
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Bio-synthesized ZnO nanoparticles and sunlight-driven photocatalysis for environmentally-friendly and sustainable route of synthetic petroleum refinery wastewater treatment
Characterization of the synthesized NPs UV visible absorption The UV–vis absorption spectra of ZnO materials are depicted in Fig. 2(a). Both samples exhibited UV–vis absorption spectra, with a wide intense absorption from about 350 nm, which may be linked to the intrinsic absorption of the BG of ZnO NPs caused by electron (e−) transfer out from…
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Synthesis and electrochemical properties of nanocubes Mn2SnS3 for high-performance supercapacitors
Fabrication and structural characterization of Mn2SnS3/NF electrode The synthesis process of Mn2SnS3/NF electrode is shown in Fig. 1. The process involved synthesizing Mn2SnS3 nanostructures with two distinct morphologies, using different precursors and temperature conditions. Once the successful synthesis of the desired morphologies was confirmed, the study investigated the effect of these morphologies on the electrochemical performance…