Category: Nanotech
-
How butterflies can help scientists detect cancer
Artistic depiction of a butterfly above the bioinspired imaging sensor. Credit: The Grainger College of Engineering at University of Illinois Urbana-Champaign There are many creatures on our planet with more advanced senses than humans. Turtles can sense Earth’s magnetic field. Mantis shrimp can detect polarized light. Elephants can hear much lower frequencies than humans can.…
-
Advanced liquid templating technique enables tailored aerogel synthesis
Nov 03, 2023 (Nanowerk Spotlight) Aerogels are a unique class of extremely porous solid materials with densities and thermal conductivities lower than air. Their impressive properties, including low density, high porosity, and low thermal conductivity, make aerogels promising for a wide range of applications. These uses include insulating spacecraft, absorbing oil spills, and shielding electronics…
-
Graphene oxide band tuning enhances raman sensing
Nov 03, 2023 (Nanowerk News) Scientists have developed a new strategy to significantly boost the sensitivity of graphene-based sensors that detect molecules using Raman spectroscopy. By modulating the graphene’s electronic band structure, the researchers were able to optimize the energy required for probing various molecules. This advancement provides a versatile platform for enhanced sensing across…
-
This Pulsing DNA Nanomotor Can Power Molecular Machines
Taking advantage of DNA’s ability to store information, researchers have over the past decade been working on data storage systems and digital logic circuits built on the biological molecule. DNA’s complex physical structure has also led to the exciting technique of DNA origami, with which researchers have made tiny nanoscale machines. In the latest example…
-
Chemists develop new sensor for microvolume pH detection
Nov 03, 2023 (Nanowerk News) Measuring the pH of substances gives us vital clues about the world around us, such as identifying contaminated water or checking the toxicity of medical or cosmetic products. Often, only small amounts of samples are available, but monitoring the variation in pH in these miniscule volumes matters. For example, identifying…
-
Deep learning at the edge enables real-time streaming ptychographic imaging
X-ray ptychography experiment X-ray ptychography data was taken at the hard X-ray nanoprobe beamline at the Advanced Photon Source. The photon energy was 10 keV. Two sets of experimental data were acquired. The first set was taken with an Amsterdam Scientific Instruments Medipix3 detector (516 × 516 pixels, 55 μm pixel size) sitting at 1.55 m downstream of the…
-
Numerical assessment of irreversibility in radiated Sutterby nanofluid flow with activation energy and Darcy Forchheimer
John Sutterby, L. Laminar converging flow of dilute polymer solutions in conical section. II. Trans. Soc. Rheol. 9, 227–241. https://doi.org/10.1122/1.549024 (1965). Article Google Scholar Naveed, I., Maryiam, J., Muhammad, S., Phatiphat, T. & Zahra, A. Theoretical exploration of thermal transportation with chemical reactions for Sutterby fluid model obeying peristaltic mechanism. J. Mater. Res. Technol. 9,…
-
Green synthesis of biocompatible Fe3O4 magnetic nanoparticles using Citrus Sinensis peels extract for their biological activities and magnetic-hyperthermia applications
Gabrielyan, L., Hovhannisyan, A., Gevorgyan, V., Ananyan, M. & Trchounian, A. Antibacterial effects of iron oxide (Fe3O4) nanoparticles: Distinguishing concentration-dependent effects with different bacterial cells growth and membrane-associated mechanisms. Appl. Microbiol. Biotechnol. 103, 2773–2782 (2019). Article CAS PubMed Google Scholar Rojas, S. et al. Antibacterial activity of Two Zn-MOFs containing a tricarboxylate linker. Nanomaterials 12,…
-
Photocatalytic degradation of tetracycline antibiotics by RGO-CdTe composite with enhanced apparent quantum efficiency
Powder XRD (p-XRD) was employed to evaluate the crystallinity and phase of the synthesized materials. The diffraction pattern of Graphite, GO, RGO, CdTe, and RGO-CdTe composite are compared in Fig. 2A. In the p-XRD of graphite, a distinct sharp peak at 2θ ~ 26.3°, with the corresponding interlayer distance of 0.34 nm is observed. After oxidation, the graphitic peak…
-
A duplex droplet digital PCR assay for absolute quantification and characterization of long self-amplifying RNA
Rosa, S. S., Prazeres, D. M. F., Azevedo, A. M. & Marques, M. P. C. mRNA vaccines manufacturing: Challenges and bottlenecks. Vaccine 39, 2190–2200 (2021). Article CAS PubMed PubMed Central Google Scholar Tavernier, G. et al. mRNA as gene therapeutic: How to control protein expression. J. Control. Release 150, 238–247 (2011). Article CAS PubMed Google…