Category: Nanotech
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Synthesis of MWCNTs by chemical vapor deposition of methane using FeMo/MgO catalyst: role of hydrogen and kinetic study
Roles of hydrogen Effect of the presence of H2 In the study roles of H2, there are two variables that need to be studied which are, the pre-reduction of catalyst and the H2 feeding during CNTs formation. Four processes: H2 free process (no pre-reduction process and without H2 feed during CNTs formation, nR-woH2), H2 co-feed…
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Unraveling the synergistic effects of Cu-Ag tandem catalysts during electrochemical CO2 reduction using nanofocused X-ray probes
Nitopi, S. et al. Progress and perspectives of electrochemical CO2 reduction on copper in aqueous electrolyte. Chem. Rev. 119, 7610–7672 (2019). Article CAS PubMed Google Scholar Sharifian, R., Wagterveld, R. M., Digdaya, I. A., Xiang, C. & Vermaas, D. A. Electrochemical carbon dioxide capture to close the carbon cycle. Energy Environ. Sci. 14, 781–814 (2021).…
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A stable atmospheric-pressure plasma for extreme-temperature synthesis
Merche, D., Vandencasteele, N. & Reniers, F. Atmospheric plasmas for thin film deposition: a critical review. Thin Solid Films 520, 4219–4236 (2012). Article CAS Google Scholar Massines, F., Sarra-Bournet, C., Fanelli, F., Naudé, N. & Gherardi, N. Atmospheric pressure low temperature direct plasma technology: status and challenges for thin film deposition. Plasma Process. Polym. 9,…
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Researchers develop first-of-its-kind woven material made entirely from flexible organic crystals
Nov 28, 2023 (Nanowerk News) Applying simple, ancient weaving techniques to newly recognized properties of organic crystals, researchers with the Smart Materials Lab (SML) and the Center for Smart Engineering Materials (CSEM) at NYU Abu Dhabi (NYUAD) have, for the first time, developed a unique form of woven “textile.” These new fabric patches expand one-dimensional…
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Is graphene the best heat conductor? Researchers investigate with four-phonon scattering
Spectral and mode contribution. (a) Spectral contributions to κ of graphene at room temperature without boundary scattering. The inset shows the cumulative thermal conductivity as a function of phonon frequency. (b) ZA phonons’ contribution to κ and its percentage at room temperature, and comparison to first principles at 3ph (renorm. stands for phonon renormalization that was not…
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Biomimetic crystallization for long-pursued –COOH-functionalized gold nanocluster with near-infrared phosphorescence
The total structures of Au25a (a), Au25b (b) and Au25c (c). (d) Molecular structures of 2-H2mna, 6-H2mna and p-MBAH. (e) ESI-MS of Au25a dissolved in H2O/MeCN. Inset: the experimental (blue trace) and calculated (red trace) isotopic patterns of the molecular ion peak [Au25(Hmna)15]2+. The Au25 frameworks in Au25a (f), Au25b (g) and Au25c (h). Anatomy…
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Investigating and fine-tuning the properties of ‘magic’ graphene
The two graphene layers are twisted relative to one another by the magic angle of approximately 1.1°. Depending on how many electrons a single cell is filled with, the graphene exhibits different electrical and magnetic properties. Measurements can be made using the oscillating tip of an atomic force microscope. The green surface is doped with…
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Nano-sized cell particles are promising intervention tool in treating infectious diseases, says study
Mechanism of extracellular vesicle (EV)-mediated SARS-CoV-2 inhibition. Credit:ACS Nano (2023). DOI: 10.1021/acsnano.3c06803 The COVID-19 pandemic demonstrated the importance of being prepared with drug interventions to contain viral outbreaks that can otherwise have devastating consequences. In preparing for the next pandemic—or Disease X, there is an urgent need for versatile platform technologies that could be repurposed…
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A new way to see the activity inside a living cell
Nov 28, 2023 (Nanowerk News) Living cells are bombarded with many kinds of incoming molecular signal that influence their behavior. Being able to measure those signals and how cells respond to them through downstream molecular signaling networks could help scientists learn much more about how cells work, including what happens as they age or become…
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The secret life of an electromagnon
Nov 28, 2023 (Nanowerk News) Scientists have revealed how lattice vibrations and spins talk to each other in a hybrid excitation known as an electromagnon. To achieve this, they used a unique combination of experiments at the X-ray free electron laser SwissFEL. Understanding this fundamental process at the atomic level opens the door to ultrafast…