The graphic shows the formation of a Holliday junction from two separate strands of double-stranded DNA. The form is a basic building block used in DNA nanotechnology to form crystal nanostructures. Holliday junctions are also found in nature during cell meiosis and form an intermediate stage during the process of homologous recombination. Credit: Shireen Dooling… Continue reading Study expands horizons for DNA nanotechnology
Category: Nanotech
Ultraviolet metasurfaces can discriminate the handedness of biomolecules with attomolar sensitivity
Researchers at LSU, in collaboration with Zuse Institute in Berlin, Germany, have developed an ultraviolet metasurface that discriminates between left- and right-handed amino acids with attomolar sensitivity. Credit: LSU Engineering Researchers at LSU, in collaboration with Zuse Institute in Berlin, Germany, have developed an ultraviolet metasurface that discriminates between left- and right-handed amino acids with… Continue reading Ultraviolet metasurfaces can discriminate the handedness of biomolecules with attomolar sensitivity
Volcano-type relationship between oxidation states and catalytic activity of single-atom catalysts towards hydrogen evolution
Synthesis and characterizations of Os SACs To fully discuss the relationship between oxidation state and catalytic activity, we synthesized atomically dispersed Os catalysts with controllable coordination environments and verified the proposed regulation mechanism of coordination configuration to optimize HER catalytic activity. The synthetic strategy of atomically dispersed Os sites supported on N and S co-doped… Continue reading Volcano-type relationship between oxidation states and catalytic activity of single-atom catalysts towards hydrogen evolution
Chiral superstructures of inorganic nanorods by macroscopic mechanical grinding
Self-assembly of CdSe/CdS NRs We first synthesized colloidal NRs of various inorganic compositions, such as CdSe, TiO2, and CdSe/CdS core/shell structures, and their surfaces were capped with aliphatic chains, which render them dispersible in nonpolar solvent (i.e., n-hexane)39,40,41,42. Most tests in this study were carried out with CdSe/CdS core/shell NRs because their aspect ratios and… Continue reading Chiral superstructures of inorganic nanorods by macroscopic mechanical grinding
Fast hydrogen purification through graphitic carbon nitride nanosheet membranes
Quadrelli, R. & Peterson, S. The energy-climate challenge: recent trends in CO2 emissions from fuel combustion. Energy Policy 35, 5938–5952 (2007). Article Google Scholar Haszeldine, R. S. Carbon capture and storage: how green can black be? Science 325, 1647–1652 (2009). ADS CAS PubMed Article Google Scholar Kenarsari, S. D. et al. Review of recent advances… Continue reading Fast hydrogen purification through graphitic carbon nitride nanosheet membranes
Magnetofection approach for the transformation of okra using green iron nanoparticles
Klein, T. M. & Jones, T. J. Methods of Genetic Transformation: The Gene Gun in Molecular Improvement of Cereal Crops 21–42 (Springer, 1999). Google Scholar Fromm, M. E., Taylor, L. P. & Walbot, V. Stable transformation of maize after gene transfer by electroporation. Nature 319(6056), 791–793 (1986). ADS CAS PubMed Google Scholar Rivera, A. L.… Continue reading Magnetofection approach for the transformation of okra using green iron nanoparticles
World’s whitest paint now thinner than ever, ideal for vehicles
Graphical abstract. Credit: Cell Reports Physical Science (2022). DOI: 10.1016/j.xcrp.2022.101058 The world’s whitest paint—seen in this year’s edition of Guinness World Records and “The Late Show With Stephen Colbert”—keeps surfaces so cool that it could reduce the need for air conditioning. Now the Purdue University researchers who created the paint have developed a new formulation… Continue reading World’s whitest paint now thinner than ever, ideal for vehicles
Researchers use light to control magnetic fields at nanoscale
Sample under study.(A) Schematic of hBN-encapsulated WSe2 monolayer with FLG top gate and contacts. The optical pump and probe are spatially separated. (B) Optical microscope image of sample D1. (C) Gate-dependent reflection spectra of the WSe2 sample. The excitonic resonance features are labeled correspondingly. a.u., arbitrary units. (D) σ+ and σ− reflection spectra at 0.5… Continue reading Researchers use light to control magnetic fields at nanoscale
Artificial enzyme splits water
Oct 03, 2022 (Nanowerk News) Mankind is facing a central challenge: it must manage the transition to a sustainable and carbon dioxide-neutral energy economy. Hydrogen is considered a promising alternative to fossil fuels. It can be produced from water using electricity. If the electricity comes from renewable sources, it is called green hydrogen. But it… Continue reading Artificial enzyme splits water
Modeling Thermal Management Systems for Electronics
The ability to dissipate heat is one of the most important features of modern electronic devices and is usually a limiting factor in the miniaturization of these devices. COMSOL Multiphysics includes functionality for heat transfer through conduction, convection, and radiation. Its ability to treat conjugate heat transfer, including laminar and turbulent flow as well as… Continue reading Modeling Thermal Management Systems for Electronics