Category: Nanotech
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Nanodiamonds can block tumor metastasis in mice, study shows
Effect of treatment with carbon nanodiamonds on the growth and metastasis of B16F10-Luc2 tumor in mice by bioluminescence imaging. Credit: Behera et al Nanodiamonds are 2–8 nm carbon nanoparticles, which can be easily functionalized with various chemical groups like carboxylic groups or drugs. Previous research has shown that actively dividing cells are more likely to…
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Liquid metal-MXene-based hierarchical aerogel enables infrared and radar invisibility
Nov 29, 2023 (Nanowerk Spotlight) Researchers have long sought to develop multifunctional stealth materials capable of evading detection across different parts of the electromagnetic spectrum. However, achieving compatible stealth performance across varying radar, infrared, and other bands has persisted as a major challenge. Materials and coatings optimized for radar absorbance often perform poorly for infrared…
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Bidding adieu to sticky ice, but with a grain of salt
Nov 29, 2023 (Nanowerk News) As Americans gear up for winter, many will face one of their toughest foes: ice. From delaying flights to making roads slippery, ice accumulation on surfaces wreaks havoc in many ways. But not all ice is created equal. In new research from the University of Illinois Chicago (Materials Horizons, “Adhesion…
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A polymeric piezoelectric MEMS accelerometer with high sensitivity, low noise density, and an innovative manufacturing approach
Theoretical feasibility The opportunity for achieving polymeric, high-performance piezoelectric MEMS accelerometers using bulk PVDF films is hypothesized based on the theoretical principles of piezoelectric sensing. The general equation for the electrical output of a piezoelectric MEMS sensor can be written as24: $$\left(\begin{array}{l}{Q}_{piezo}=\iint [\begin{array}{ccc}{D}_{1} & {D}_{2} & {D}_{3}\end{array}]\left[\begin{array}{c}d{A}_{1}\\ d{A}_{2}\\ d{A}_{3}\end{array}\right]\\ {V}_{piezo}={Q}_{piezo}\left[\begin{array}{c}\frac{1}{{C}_{1}}\\ \frac{1}{{C}_{2}}\\… Continue Reading News Source:…
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Portable visual and electrochemical detection of hydrogen peroxide release from living cells based on dual-functional Pt-Ni hydrogels
Microstructures of the Pt-Ni hydrogels The Pt-Ni hydrogels were prepared via a fast and simple coreduction of a mixed metal salt solution by sodium borohydride (NaBH4). Scanning and transmission electron microscopy (SEM and TEM) were first carried out to evaluate the morphology and microstructure of the representative PtNi3 hydrogel (see Fig. 1a–d). It displayed a…
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Effect of laser fluence on the optoelectronic properties of nanostructured GaN/porous silicon prepared by pulsed laser deposition
Chen, F., Ji, X. & Lau, S. P. Recent progress in group III-nitride nanostructures: From materials to applications. Mater. Sci. Eng. R. Rep. 142, 100578 (2020). Article Google Scholar Feng, Z. C. (ed.) III-Nitride Materials (World Scientific, 2017). Google Scholar Gil, B. III-Nitride Semiconductors and Their Modern Devices (OUP Oxford, 2013). Book Google Scholar Kneissl,…
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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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Cascaded compression of size distribution of nanopores in monolayer graphene
Epsztein, R., DuChanois, R. M., Ritt, C. L., Noy, A. & Elimelech, M. Towards single-species selectivity of membranes with subnanometre pores. Nat. Nanotechnol. 15, 426–436 (2020). Article CAS PubMed Google Scholar Zuo, P. et al. Near-frictionless ion transport within triazine framework membranes. Nature 617, 299–305 (2023). Article CAS PubMed PubMed Central Google Scholar Bai, J.…