Listar Centro de investigación de Nanotecnología Aplicada (CNAP) por autor "Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile"
Mostrando ítems 1-20 de 28
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A Monte Carlo code for the collisional evolution of porous aggregates (CPA)
Millan, Emmanuel N.; Planes, María Belén; Urbassek, Herbert M.; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (EDP SCIENCES S A, 2023-03-29)Context. The collisional evolution of submillimeter-sized porous dust aggregates is important in many astrophysical fields.Aims. We have developed a Monte Carlo code to study the processes of collision between mass-asymmetric, ... -
Collisions between amorphous carbon nanoparticles: phase transformations
Nietiadi, Maureen L.; Valencia, Felipe J. [Univ Mayor, Fac Estudios Interdisciplinarios, Ctr Invest DAiTA Lab, Chile]; Gonzalez, Rafael I. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Urbassek, Herbert M. (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 ... -
Development of "on-demand" thermo-responsive hydrogels for anti-cancer drugs sustained release: Rational design, in silico prediction and in vitro validation in colon cancer models
Carreño, Gustavo; Pereira, Alfredo; Marican, Adolfo; Andrade, Fernanda; Roca-Melendres, Maria Merce; Valdés, Oscar; Vijayakumar, Sekar; Schwartz, Simo, Jr.; Abasolo, Ibane; Rafael, Diana; Duran-Lara, Esteban F.; Avila-Salas, Fabian [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (ELSEVIER, 2021-12)A rational design accurate based on the use of Statistical Design of the Experiments (DoE) and Molecular Dynamics Simulations Studies allows the prediction and the understanding of thermo-responsive hydrogels prepared ... -
Doped Poly(3-hexylthiophene) Coatings onto Chitosan: A Novel Approach for Developing a Bio-Based Flexible Electronic
Bonardd, Sebastián [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Morales, Natalia; Gence, Loik; Saldias, César; Angel, Felipe A.; Kortaberria, Galder; Leiva, Angel (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 ... -
Effect of subsurface voids on the nanoindentation of Fe crystals
Hofer, Juan A.; Ruestes, Carlos J.; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Urbassek, Herbert M. (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 ... -
Effect of the monomers ratio in the electrosynthesis of poly (aniline-co-o-methoxyaniline) on steel corrosion protection
Del Valle, M. A.; Mieres, E. [Univ Mayor, Fac Ciencias, Ingn Construcc, Chile]; Motheo, A.; Ramírez, A. M. R. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (SOC CHILENA QUIMICA, 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 the monomers ratio in the electrosynthesis of poly(aniline-co-o-methoxyaniline) on steel corrosion protection
Del Valle, M. A.; Mieres, E. [Univ Mayor, Fac Ciencias, Ingn Construcc, Chile]; Motheo, A.; Ramírez, A. M. R. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (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
Clara Zonana, M.; Ruestes, Carlos J.; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Urbassek, Herbert M. (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 ... -
Erythroid Differentiation and Heme Biosynthesis Are Dependent on a Shift in the Balance of Mitochondrial Fusion and Fission Dynamics
Gonzalez-Ibanez, Alvaro M.; Ruíz, Lina M.; Jensen, Erik; Echeverria, Cesar A.; Romero, Valentina [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Stiles, Linsey; Shirihai, Orian S.; Elorza, Alvaro A. (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 ... -
FoamExplorer: Automated measurement of ligaments and voids for atomistic systems
Aparicio, Emiliano; Millan, Emmanuel N.; Ruestes, Carlos J.; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (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
Carlos Castro-Palacio, Juan; Ladutenko, Konstantin; Prada, Alejandro [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; González-Rubio, Guillermo; Díaz-Núñez, Pablo; Guerrero-Martínez, Andrés; Fernández de Cordoba, Pedro; Kohanoff, Jorge; Manuel Perlado, José; Pena-Rodríguez, Ovidio; Rivera, Antonio (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 ... -
Hydrogen effects on the mechanical properties of nanocrystalline free-standing Palladium thin films
Ali, M. L.; Crespo, E. A.; Ruda, M.; Bringa, E. M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Ramos, S. B. (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 ... -
Increasing the temperature range of dipolar glass polymers through copolymerization: A first approach to dipolar glass copolymers
Bonardd, Sebastián [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Alegria, Angel; Saldias, César; Leiva, Angel; Kortaberria, Galder (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 ... -
Indentation and scratching of iron by a rotating tool-a molecular dynamics study
Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Alhafez, Iyad Alabd; Ruestes, Carlos J.; Urbassek, Herbert M. (ELSEVIER, 2021-06-15)When abrasive particles interact with a surface, besides translational center-of-mass motion also rotational motion of the abrasive may be involved. We perform molecular dynamics simulations of the influence of the rotational ... -
Magnon valley Hall effect in CrI3-based van der Waals heterostructures
Hidalgo-Sacoto, R.; Gonzalez, R., I [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Vogel, E. E.; Allende, S.; Mella, José D.; Cárdenas, C.; Troncoso, Roberto E.; Muñoz, F. (American Physical Society, 2020-05)Magnonic excitations in the two-dimensional (2D) van der Waals (vdW) ferromagnet chromium triiodide (CrI3) are studied. We find that bulk magnons exhibit a nontrivial topological band structure without the need for ... -
MeV irradiation of tungsten nanowires: structural modifications
Grossi, Joas; Kohanoff, Jorge; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (IOP Publishing Ltd., 2020-05)In this work we use the Two Temperature Model coupled to Molecular Dynamics (TTM-MD) to study swift heavy ion irradiation of W finite nanowires. Au projectiles are considered with energies ranging from 20 to 50 MeV, which ... -
Modeling habitat suitability and spread dynamics of two invasive rose species in protected areas of Mendoza, Argentina
Mazzolari, Ana C.; Millan, Emmanuel N.; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Vázquez, Diego P. (Elsevier, 2020-12)Biological invasions are a main threat to biodiversity and natural resources, which calls for studies that identify the regions that present the greatest invasion risks. We assessed the potential distribution of two ... -
Molecular dynamics simulations of thermal conductivity between two nanoparticles in contact
Mora-Barzaga, G.; Miranda, E. N.; Bringa, E. M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile] (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, ... -
Nanoindentation of polycrystalline Pd hollow nanoparticles: Grain size role
Pinto, Benjamin [Univ Mayor, Escuela Construcc, Chile]; Valencia, Felipe J. [Univ Mayor, Fac Estudios Interdisciplinarios, Ctr Invest DAiTA Lab, Chile]; Kiwi, Miguel; Ruestes, Carlos J.; Bringa, Eduardo M. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Rogan, José (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, ... -
New Hybrid Copper Nanoparticles/Conjugated Polyelectrolyte Composite with Antibacterial Activity
Jessop, Ignacio A.; Pérez, Jasmín P.; Jachura, Andrea; Núñez, Hipólito; Saldias, Cesar; Isaacs, Mauricio; Tundidor-Camba, Alain; Terraza, Claudio A.; Cárcamo-Vega, José J.; Araya-Duran, Ingrid [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada, Chile]; Camarada, Maria B. [Univ Mayor, Fac Estudios Interdisciplinarios, Nucleo Quim & Bioquim, Chile] (MDPI, 2021-02)In the search for new materials to fight against antibiotic-resistant bacteria, a hybrid composite from metallic copper nanoparticles (CuNPs) and a novel cationic pi-conjugated polyelectrolyte (CPE) were designed, synthesized, ...