Centro de investigación de Nanotecnología Aplicada (CNAP): Envíos recientes
Mostrando ítems 21-40 de 91
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Effect of functionalized silica nanoparticles on the mass transfer process in active PLA nanocomposite films obtained by supercritical impregnation for sustainable food packaging
(Elsevier, 2020-07)Nanocomposite films based on PLA with 1.0 % w/w silica nanoparticles (NP) and surface-functionalized silica nanoparticles with lactic acid (NP-LA), respectively, were obtained by extrusion process. Subsequently, cinnamaldehyde ... -
Simulated mechanical properties of finite-size graphene nanoribbons
(IOP Publishing Ltd., 2021-01)There are many simulation studies of mechanical properties of graphene nanoribbons (GNR), but there is a lack of agreement regarding elastic and plastic behavior. In this paper we aim to analyze mechanical properties of ... -
New Poly(imide)s Bearing Alkyl Side-Chains: A Study on the Impact of Size and Shape of Lateral Groups on Thermal, Mechanical, and Gas Transport Properties
(MDPI AG, 2020-07)A set of five new aromatic poly(imide)s (PIs) incorporating pendant acyclic alkyl moieties were synthesized. The difference among them was the length and bulkiness of the pendant group, which comprises of linear alkyl ... -
Impulsive generation of < 100 & rang; dislocation loops in BCC iron
(IOP Publishing Ltd., 2020-07)The conditions for the formation of < 100 & rang; dislocation loops in body-centered cubic (BCC) iron were investigated via molecular dynamics simulations using a simplified model intended to mimic conditions in high energy ... -
Imogolite in water: Simulating the effects of nanotube curvature on structure and dynamics
(Elsevier BV, 2019-07)Imogolite is a fascinating inorganic nanotube that is found in nature or synthesized in a laboratory. The synthesis process is carried out in liquid media, and leads to the formation of almost monodisperse diameter nanotubes. ... -
Hydrogen effects on the mechanical properties of nanocrystalline free-standing Palladium thin films
(Elsevier Ltd., 2020-05)Pd membranes are used both in hydrogen detection and hydrogen separation devices. Their properties can be improved at the nanometer scale. We simulate atomistically the tensile properties of Pd mono and polycrystalline ... -
Erythroid Differentiation and Heme Biosynthesis Are Dependent on a Shift in the Balance of Mitochondrial Fusion and Fission Dynamics
(Frontiers Media S.A., 2020-11)Erythropoiesis is the most robust cellular differentiation and proliferation system, with a production of similar to 2 x 10(11) cells per day. In this fine-tuned process, the hematopoietic stem cells (HSCs) generate erythroid ... -
Physicochemical properties of L-alpha dipalmitoyl phosphatidylcholine large unilamellar vesicles: Effect of hydrophobic block (PLA/PCL) of amphipathic diblock copolymers
(Elsevier Ireland Ltd, 2020-08)In the present work, we show how amphipathic diblock copolymers affect the physicochemical properties of the lipid bilayer of DPPC liposome. Diblock copolymers proposed for this study are focused in the difference between ... -
FoamExplorer: Automated measurement of ligaments and voids for atomistic systems
(Elsevier, 2020-12)Atomistic simulations are often used to explore the mechanical and chemical properties of a variety of materials and structures, such as nanowires, whiskers, nanospheres, nanotrusses, and nanoscale foams, among others. ... -
Hollow Gold Nanoparticles Produced by Femtosecond Laser Irradiation
(American Chemical Society, 2020-07)Metallic hollow nanoparticles exhibit interesting optical properties that can be controlled by geometrical parameters. Irradiation with femtosecond laser pulses has emerged recently as a valuable tool for reshaping and ... -
Effect on the Optical Efficiency and Photostability of Luminescent Solar Concentrator Based on the Deposition of AgSiO2@NPs
(American Chemical Society, 2020-08)Because of the growing demand for the use of photovoltaic cells to transform solar energy into electrical energy, radiation concentration systems such as luminescent solar concentrators (LSCs) have gained significant ... -
Effect of the monomers ratio in the electrosynthesis of poly(aniline-co-o-methoxyaniline) on steel corrosion protection
(Sociedad Chilena de Química, 2020-12)In this work, the synthesis of poly(aniline-co-o-methoxyaniline) was carried out on AISI 304 steel, by voltammetric or potentiostatic method. Electropolymerization was achieved from different ratios of 0.4 mol.L-1 ... -
Effect of Tip Roundness on the Nanoindentation of Fe Crystals
(Springer New York, 2020-04)Indentation tips are never atomically sharp, but rounded at their end. We use atomistic simulation to study the effect of tip roundness for the particular case of a cube-corner pyramidal indenter by comparing the results ... -
Effect of subsurface voids on the nanoindentation of Fe crystals
(IOP Publishing Ltd., 2020-03)Subsurface voids may strongly affect the response of materials to nanoindentation. We explore these effects for a bcc single-crystalline Fe sample using molecular dynamics simulation. Deformation occurs mainly by nucleation ... -
Doped Poly(3-hexylthiophene) Coatings onto Chitosan: A Novel Approach for Developing a Bio-Based Flexible Electronic
(American Chemical Society, 2020-03)Conductive and flexible bio-based materials consisting of chitosan films coated with conductive poly(3-hexylthiophene) (P3HT) were prepared. Thermal, optical, mechanical, morphological, wettability, and conductive properties ... -
Increasing the temperature range of dipolar glass polymers through copolymerization: A first approach to dipolar glass copolymers
(Elsevier BV, 2020-08)This work introduces, for the first time, the dipolar glass copolymer concept as a new strategy to develop polymer dielectrics. Methacrylic monomers containing sulfone and nitrile groups were copolymerized with ... -
Collisions between amorphous carbon nanoparticles: phase transformations
(EDP Sciences, 2020-09)Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks.Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these ... -
Optical, morphological and photocatalytic properties of biobased tractable films of chitosan/donor-acceptor polymer blends
(Elsevier Ltd., 2020-12)Biobased tractable films consisting of blends of chitosan (CS) with polymer bearing carbazole derivatives as pendant groups and fluorene-thiophene as donor-acceptor units (referred to as DA) were prepared, and their optical, ... -
Nanoindentation of polycrystalline Pd hollow nanoparticles: Grain size role
(Elsevier, 2020-06)Polycrystalline hollow nanoparticles present a unique combination of strength and flexibility. However, the exact role displayed by their grain structure in mechanical properties has not been yet fully understood. Here, ... -
Molecular dynamics simulations of thermal conductivity between two nanoparticles in contact
(American Institute of Physics, 2020-06)The nanoscale properties of materials can have a great influence on their macroscopic behavior; for instance, the generation and accumulation of defects at the nanoscale, such as point defects, porosity, and interfaces, ...