Category: Nanotech
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Energy Harvesting for Wearable Technology Steps Up
Wearable devices, like nearly every other piece of tech, need energy. Fortunately, though, at wearables’ modest power budgets, energy is effectively everywhere. It’s in the sun’s rays and radio waves, the skin’s sweat and body heat, a person’s motion and their footfalls. And today, technology is maturing to the point that meaningful amounts of these…
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Scientists develop nanocellulose-based aerogel film to keep buildings cooler
Nov 01, 2023 (Nanowerk News) The global demand for cooling energy has seen a surge in the 21st century. Notably, the use of air conditioners and electric fans accounts for nearly 20% of a building’s overall electricity consumption. Exploring eco-friendly and sustainable cooling technologies holds promising prospects for combatting global warming and curbing energy usage.…
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Nanowire ‘brain’ network learns and remembers ‘on the fly’
Electron microscope image of the nanowire neural network that arranges itself like ‘Pick Up Sticks’. The junctions where the nanowires overlap act in a way similar to how our brain’s synapses operate, responding to electric current. Credit: The University of Sydney For the first time, a physical neural network has successfully been shown to learn…
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Scientists engineer carbon nanotubes for greener hydrogen peroxide production
Nov 01, 2023 (Nanowerk Spotlight) Hydrogen peroxide is commonly used for cleaning and bleaching as a friendlier alternative to harsh chemicals. However, the current method for making it isn’t that eco-friendly. The process, called anthraquinone oxidation, uses a lot of energy and heat and produces waste. Scientists are looking for a more sustainable way to…
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Efficient removal of aromatic pollutants via catalytic wet peroxide oxidation over synthetic anisotropic ilmenite/carbon nanocomposites
Characterization of FeTiO3/C nanocomposites Figure 1 showed the XRD patterns of samples made from different initial molar compositions of 1.0Fe : 1.0Ti : xCTAB : yTEA (x = 0, 0.67 or 1.33, y = 0 or 4.0). The sample obtained without the addition of TEA (denote as FeTiO3/C-NT, NT for No TEA (y = 0)) to the initial reaction mixture contained…
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Using biologically synthesized TiO2 nanoparticles as potential remedy against multiple drug resistant Staphylococcus aureus of bovine mastitis
Godden, S. et al. Effectiveness of an internal teat seal in the prevention of new intramammary infections during the dry and early-lactation periods in dairy cows when used with a dry cow intramammary antibiotic. J. Dairy Sci. 86(12), 3899–3911 (2003). Article CAS PubMed Google Scholar Ruegg, P. L. Investigation of mastitis problems on farms. Vet.…
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Defects and nanostrain gradients control phase transition mechanisms in single crystal high-voltage lithium spinel
SXDM imaging of LMNO was performed in a commercial, reflection geometry Li∣∣LMNO operando cell with carbonate-based electrolyte and a kapton window for X-ray transparency. Additional description and information on the preparation of the cell is presented in Methods section. A (111)-faceted LMNO single crystal (Fig. 1b) was located, and 2D maps of the (400) reflection…
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Metasurface-empowered snapshot hyperspectral imaging with convex/deep (CODE) small-data learning theory
Design of multi-resonant meta-atom for multi-wavelength off-axis focusing meta-mirror The main idea for constructing a multispectral image of a color object without involving filters is utilizing a multi-resonant meta-atom as the metasurface building block. We incorporate an Al nano-rod with a particularly designed distributed Bragg reflector (DBR) to realize a multi-resonant meta-atom. Details of the…
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Nano-scale charge trapping memory based on two-dimensional conjugated microporous polymer
We conducted a series of current scans using the cAFM, operating in contact mode, with dimensions of 2.5 × 2.5 µm2. The scans were carried out as follows: a read scan was performed at 0.5 V (Fig. 6a), a write scan was done at 5 V (Fig. 6b), followed by another read scan at 0.5 V (Fig. 6c), an erase scan was executed…
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One-atom-thick hexagonal boron nitride co-catalyst for enhanced oxygen evolution reactions
Xie, X. et al. Oxygen evolution reaction in alkaline environment: material challenges and solutions. Adv. Funct. Mater. 32, 2110036 (2022). Article CAS Google Scholar Zhai, P. et al. Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density. Nat. Commun. 14, 1873 (2023). Article ADS CAS PubMed PubMed Central Google…