Universities and colleges
Researchers have been exploring the potential of spin transfer switching at low current densities in magnetic nanostructures. A recent study published in Nanoscience and Nanotechnology Letters investigated the effects of current density and spin polarization ratio on the magnetization switching dynamics of a ferromagnetic nanostructure. The simulations, performed using a
Scientists
Surface modification of nanosized alumina particles using gamma-aminopropyl triethoxysilane significantly improves their dispersion in polymer and enhances the properties of polymer nanocomposites, according to a study published in the journal Advanced Composite Materials. Researchers from the Technical University of Munich found that the modified alumina particles exhibit improved mechanical behavior,
Scientists
Researchers at Peking University have discovered a novel method of modulating Raman scattering intensities of molecules on graphene by adjusting the graphene Fermi level with electrical field effect. They found that applying a positive or negative gate voltage to the graphene resulted in weakening or strengthening of Raman intensities for
Universities and colleges
Research conducted by S. Jeong and colleagues at the University of Minnesota has shed light on the carrier transport and recombination mechanisms in Cu2O-ZnO heterojunction solar cells. The study, published in Thin Solid Films, analyzed the current-voltage characteristics of these solar cells in the dark and under various illumination intensities,
Universities and colleges
A recent study from I-Shou University in Kaohsiung, Taiwan, has successfully demonstrated the epitaxial growth of non-polar a-plane AlN thin films by low temperature sputtering using ZnO buffer layers. The researchers, led by H.G. Chen, investigated the effect of metalorganic chemical vapor deposition (MOCVD) growth conditions on the surface
Scientists
Researchers from Kangwon National University have developed a new composite separator for lithium-ion batteries by introducing ceramic coating layers onto both sides of a polyethylene (PE) separator. The ceramic coating layers are comprised of SiO2 nanoparticles and polyvinylidene fluoride-hexafluoropropylene (PVdF-HFP) binders. This innovative design offers significant improvements in thermal shrinkage
Scientists
Scientists at the University of Porto have uncovered the crucial role of alumina barrier layer thickness in promoting the growth of Ni nanowires within porous anodic alumina templates. By fine-tuning the anodization process, researchers were able to achieve optimal growth conditions, resulting in a Ni pore filling percentage of nearly
Universities and colleges
Scientists at the University of Paris, France, have investigated the electrical conduction properties of lateral and vertical silicon nanowires (SiNWs) using conductive-probe atomic force microscopy (AFM). The study aimed to understand the internal microstructures and transport regimes of these nanowires. Researchers synthesized horizontal SiNWs using the in-plane solid-liquid-solid technique and
Universities and colleges
Researchers from Duke University have designed and fabricated fiber-optic nanoprobes for optical detection in single living cells. The nanoprobes' sensitivity depends on the extremely small excitation volume, which is determined by the aperture sizes and penetration depths. The researchers achieved nanoaperture diameters of approximately 50 nm using a 25
Scientists
Scientists have successfully demonstrated the ability to control reversible chemical reactions between C-60 molecules using a scanning tunneling microscope (STM). This study, published in the Journal of Nanoscience and Nanotechnology, utilizes STM to induce polymerization and depolymerization reactions at specific positions within ultrathin films of C-60 molecules. The researchers found
Scientists
Researchers at Osaka University in Japan have employed ab-initio calculation based on density functional theory to study the nitrogen monoxide (NO) adsorption on platinum tetramer (Pt-4) clusters supported on gamma alumina (gamma-Al2O3) with a surface index of (111). The study found that the adsorption of Pt-4 on gamma-Al2O3(111) surface
Universities and colleges
Researchers in Blacksburg, Virginia, have successfully synthesized polymer-magnetite nanoparticle complexes that respond to both magnetic fields and temperature. These novel complexes were created using alkyl halide-functional bis(diethylphosphonate) esters as initiators for polymerizing N-isopropylacrylamide via controlled atom transfer radical polymerization. The phosphonate esters were removed after polymerization, resulting in poly(
