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Ponente: Lizbeth Alexandra Lara Perugachi
Escuela: Yachay Tech - Carrera: Física
Cold Gas at High Galatic Latitudes in the Milky Way
One of the most important components of the interstellar medium in our Galaxy is the neutral atomic hydrogen (HI). HI is predominantly found in the disk of the Galaxy. However, various processes, such as galactic winds, can expel a significant fraction of the HI above the Galactic plane into the halo of the Milky Way. In this work, we show that the new revolutionary technology in observations allows combining HI emission-absorption wide-field surveys to be a powerful tool to map HI spatial distribution, allowing us to study the properties of the cold phase of HI gas at high galactic latitudes. We have analyzed HI emission and absorption spectra in ∼ 300 lines of sight in two different regions above the Galactic Plane Hydra at b ∼ 27◦ and Norma at b ∼-8◦. We calculate column densities using two different methods and find cold gas fractions between 2- 22% in the Norma field and 0- 6% in the Hydra field.
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2
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Ponente: Michael Andres Pantoja Meneses
Escuela: Yachay Tech - Carrera: Nanotecnología
Removal of PET microplastics from aquatic environments using Fe-Co/chitosan-modified nanoparticles
The pervasive presence of polyethylene terephthalate (PET) microplastics in aquatic environments necessitates efficient removal strategies. Este estudio presenta la síntesis y caracterización de nanopartículas magnéticas de CoFe₂O₄ y su funcionalización con quitosano para la adsorción de microplásticos. were developed and evaluated for their capacity to adsorb PET microplastics from water. The composite was synthesized using accessible chemical methods and characterized to confirm its structural integration. PET microplastics were generated to simulate environmental pollutants. Adsorption efficiency was assessed through spectrophotometric analysis, confirming the material’s ability to reduce microplastic concentrations. The composite showed no significant antibacterial activity, indicating low ecological disruption. These results highlight the potential of chitosan-coated magnetic nanoparticles as a promising and sustainable solution for microplastic remediation in aquatic systems.
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Ponente: Juan Daniel Vasconez Vela
Escuela: Yachay Tech - Carrera: Física
Spectral Methods for the Navier Stokes Equations
In this project, we explore spectral methods as a powerful numerical tool for solving the two-dimensional incompressible Navier-Stokes equations. These equations govern the motion of viscous fluid flows and are fundamental in fluid dynamics. Spectral methods offer high spatial accuracy by representing fields in Fourier space, where differential operators become algebraic, enabling efficient computation of derivatives and solving of Poisson equations. We implement a pseudo-spectral solver in Python that uses Fast Fourier Transforms (FFT) to compute nonlinear advection, apply a pressure projection step to enforce incompressibility, and treat viscous diffusion implicitly for stability. The simulation is initialized with a vortex configuration and evolves under periodic boundary conditions. This method is particularly well-suited for smooth, periodic problems and demonstrates the advantages of spectral accuracy and computational efficiency. We also present a modified version of the code with customizable initial conditions and interactive visualization tools to aid in educational and research applications.
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4
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Ponente: Gomez Bermeo Angel Ariel, Bady Fernando Mejia Perez
Escuela: Yachay Tech - Carrera: Nanotecnología
Synthesis and Application of SiO₂ Nanoparticles for Glyphosate Photodegradation
Objective: To develop a photocatalyst based on silica (SiO₂) nanoparticles for degrading glyphosate, a toxic herbicide that poses risks to human health and the environment. Problem: Glyphosate is highly soluble and persistent, contaminating soil, water, and food. It has been linked to neurotoxic effects, DNA damage, and significant health hazards. Proposed Solution: We utilize SiO₂ nanoparticles synthesized via the sol-gel method, leveraging their high surface area, stability, and ability to enhance the degradation of pollutants under light exposure.
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Ponente: Camila Alejandra Narváez Rivadeneira
Escuela: Yachay Tech - Carrera: Nanotecnología
Photocatalytic Degradation of Glyphosate in Aqueous Solutions Using TiO2 Nanoparticles
The study proposes an innovative approach utilizing titanium dioxide (TiO₂) nanoparticles for the photocatalytic degradation of glyphosate. TiO₂ nanoparticles were synthesized and characterized to assess their potential for environmental remediation, particularly in the breakdown of glyphosate residues. The synthesis process involved dispersing TiO₂ powder in a sulfuric acid medium under mechanical stirring. The resulting nanoparticles demonstrated promising photocatalytic activity for the effective degradation of glyphosate, highlighting their applicability in advanced water treatment processes targeting agrochemical pollutants.
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6
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Ponente: Daniel Sebastián Arias Toctaguano
Escuela: Yachay Tech - Carrera: Física
The Nature of Cold Gas in the Chamaeleon Molecular Cloud Complex.
El contenido de gas de la Vía Láctea ha sido típicamente estudiado a través de observaciones de líneas espectrales de monóxido de carbono (CO) e hidrógeno atómico neutral (HI). Sin embargo, si comparamos las medidas de columnas de densidad de estos conjuntos de datos con columnas de densidad medidas de observaciones de rayos gamma, entonces encontramos una clara discrepancia, indicando la presencia de grandes cantidades de gas no identificado. Este gas es también conocido como medio neutral oscuro (MNO) y es probablemente la combinación de HI frío e hidrógeno molecular, donde ambos son complicados de observar directamente. El objetivo de este proyecto es el de determinar qué fracción del MNO en la región Chamaeleon es HI frío, basado en datos de absorción y emisión de HI para así poder caracterizar las propiedades físicas del gas HI en esta región. De forma preliminar, se obtiene una relación entre la distribución de CO, MNO y HI, con un porcentaje de HI conformando aproximadamente el 60% del MNO.
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7
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Ponente: Quray Asarpay Potosi Dumaguala
Escuela: Yachay Tech - Carrera: Física
Computational studies of topological defects on transition-metal dichalcogenide NbS₂ monolayer superlattice
Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted considerable interest due to their versatile electronic properties and promising applications in nanotechnology. Niobium disulfide (NbS₂), a metallic TMD, distinguishes itself from semiconducting counterparts such as MoS₂ through its unique electronic and structural characteristics. NbS₂ typically crystallizes in layered polytypes, such as the 2H phase, where niobium atoms occupy octahedral sites between sulfur layers, stabilized by weak van der Waals forces. Unlike conventional semiconducting TMDs, NbS₂ displays intrinsic metallic behavior, high electrical conductivity, and strong electron-phonon interactions, which give rise to superconductivity in its bulk form with a critical temperature. While thickness-dependent studies confirm the retention of metallic properties in monolayer NbS₂, superconducting transitions in the 2D limit remain poorly understood. These attributes position NbS₂ as a compelling candidate for advanced conductive materials. This study employs ab initio density-functional theory (DFT) calculations implemented in the Vienna Ab initio Simulation Package (VASP) to investigate the electronic structure of 2D NbS₂ superlattice formed with topological defect. The results shed light on the material’s thickness-dependent properties, offering insights into its potential as a 2D conductor. Key findings will be analyzed to bridge gaps in understanding 2D NbS₂ behavior at the atomic scale, with implications for its application in nanoscale electronic devices.
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8
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Ponente: Tatiana Monserrath Cuenca Chasi
Escuela: Yachay Tech - Carrera: Materiales
How to built your own optical microscope
An optical microscope was constructed using low-cost and, in some cases, freely available materials, utilizing the infrastructure provided by a university. The project demonstrates that accurate resolution can be achieved with affordable components. By applying theoretical and practical knowledge in optics and microscopy, the team successfully designed and assembled a functional microscope suitable for basic laboratory use. The primary objective of the experiment is to address resource limitations in educational and research environments by developing innovative and accessible methods for building laboratory-grade optical microscopes.
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9
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Ponente: Fausto Israel Chicaiza Acevedo
Escuela: Yachay Tech - Carrera: Nanotecnología
Synthesis and characterization of P-type CuO thin film semiconductor
Nowadays, research is increasingly focused on developing eco-friendly and easily fabricated semiconductors. Among these, copper oxide (CuO) thin films have emerged as a promising alternative due to their excellent p-type semiconducting behavior and strong light absorption properties. This study aims to synthesize the p-type semiconductor at Yachay Tech. To achieve this goal, the synthesis and characterization of CuₓOₓ thin films deposited using DC magnetron sputtering (AJA International) were carried out. The initial stage involved optimizing deposition parameters such as working pressure, Ar:O₂ gas ratio, and deposition time. The study then proceeded with the characterization of the sputtered thin films using advanced materials characterization techniques, such us, X-ray diffraction (XRD) to analize its crystallinity, ultraviolet-visible (UV-Vis) to study optical properties, atomic force microscopy (AFM) to evaluate surface morphology, and I-V curve curves to evaluate the NP junction behavior and contact resistances. As future work, this semiconductor will be used in the fabrication of an OLED device to evaluate its performance as a hole transport layer.
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10
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Ponente: Ángel David Salazar Guamán
Escuela: Yachay Tech - Carrera: Física
Beyond Static Maps: Dynamical Modeling of Neutral Hydrogen (HI) in Galaxies
We study the neutral atomic hydrogen (HI) emission from a system of interacting galaxies NGC 7753 and NGC 7752. Results reveal a complex distribution of HI and tidal interactions between these galaxies. Galaxy interactions affect the galaxy's evolution in different ways, such as altering the shape and gas distribution of the galaxies and stimulating regions of star formation. Using 3D kinematic modeling with BBarolo Software, we derive HI intensity, velocity field, and velocity dispersion maps to quantify the properties of the gas, including rotation velocity, systemic velocity, and velocity dispersion. In addition, we identified a third galaxy (2MASX J23470758+2926531) which is part of this system of interacting galaxies.
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11
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Ponente: Pedro Francisco Zamora Dávila
Escuela: Yachay Tech - Carrera: Nanotecnología
Las diatominas son microfósiles de algas con estructura de sílice (SiO₂) porosa
Las diatomitas son microfósiles de algas con estructura de sílice (SiO₂) porosa, resultantes de una actividad geológica prolongada, caracterizada por los sedimentos y las condiciones de lagos o grandes masas de agua. Por lo tanto, son localmente accesibles gracias a su significante presencia en lugares como la cuenca de Guayllabamba, en Ecuador. En particular, tras procesos de limpieza e impregnación con litio (Li), pueden servir como sustratos y precursores para nuevos materiales compuestos; con nanopartículas metálicas (MNP de Fe y Co) y nanomateriales basados en carbono (CBNs). Además, la metodología de síntesis in-situ empleada para formar estos nanomateriales mediante diversas técnicas químicas “Bottom-Up” como; la coprecipitación y la deposición química de vapor (CVD), en las diatomitas, puede producir resultados notables. De hecho, para conocer la composición, la estructura y el material sintetizado, se llevaron a cabo técnicas de microscopía óptica y electrónica (con EDX); y así corroborar la presencia significativa de otro elemento constitutivo (Ca) y los nanotubos de carbono (CNTs) resultantes. Además, para confirmar las posibles aplicaciones, se requirieron ensayos electroquímicos (EIS) y técnicas espectroscópicas (Raman, FTIR) para la caracterización del material. Asimismo, optimizar los métodos que integran todos estos recursos y compararlos con las aplicaciones más avanzadas en, por ejemplo, sistemas de iones de litio (baterías y supercondensadores) son objetivos fundamentales de este estudio, ya que recupera investigaciones previas y establece una base práctica para la próxima generación de tecnologías disruptivas de almacenamiento de energía basadas en materiales micro y nanoestructurados.
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12
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Ponente: Manuel Antonio Escobar Ordóñez
Escuela: Yachay Tech - Carrera: Maestría de Química con Mención en Materiales
Computational studies of the metal-organic framework MIP 202(Zr): stability, electronic structure, and defects
Metal-organic frameworks (MOFs) exhibit high porosity, large surface area, and numerous active sites, making them promising candidates for photocatalysis. Unlike conventional photocatalysts, MOFs can self-adjust their electronic and optical properties without additional species, enhancing their photocatalytic efficiency. MIP-202(Zr), based on L-aspartic acid, is particularly notable for its sustainability, scalability, and biocompatibility. This study aims to computationally analyze MIP-202(Zr) based structures through density-functional theory (DFT), exploring structural modifications such as metal exchange (e.g., Ti⁴⁺), metal doping, and structural defects. These modifications tune the charge separation, band gap, and overall photocatalytic performance. However, DFT is computationally expensive for large systems such as MOFs. To tackle this limitation, machine learning (ML) techniques are employed to predict the stability and properties of modified MOFs more efficiently by capturing structure-property relationships. Specifically, the ML force fields (MLFF) feature in VASP enables the automatic generation and refinement of force fields through on-the-fly training based on MD simulations. This approach facilitates the selection of modified MOFs with enhanced photocatalytic performance, contributing to renewable energy solutions in response to global energy and environmental challenges.
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13
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Ponente: Ruth Noemí Villafuerte Mayorga y Madelyn Noelia Azogue Trujillo
Escuela: Yachay Tech - Carrera: Nanotecnología
Sublimation and Crystal Growth of Iodine: A visual Approach to Solid- Sate Transitions
In this project, we set out to grow iodine crystals using a simple and eye-catching method: sublimation. By gently heating solid iodine, we saw it turn into violet vapor and then re-form as shiny purple crystals on a cold surface. This hands-on experiment clearly shows how crystals can grow directly from gas, offering a fun and visual way to explore phase changes with minimal equipment.
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14
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Ponente: Nathaly Lisbeth Osorio Sampedro
Escuela: Yachay Tech - Carrera: Nanotecnología
Influence of Calcination Temperature on Electrospun CuO Nanostructured Fibers
This study presents the synthesis and characterization of copper oxide (CuO) nanostructured fibers fabricated via electrospinning, employing polyvinylpyrrolidone (PVP) and copper acetate as precursor materials. Optimized parameters for the electrospinning process included a voltage of 6 kV and a flow rate of 1 mL/h. Post-synthesis, the fibers were subjected to thermal treatment at calcination temperatures of 400, 500, 600, and 700 °C to investigate phase transformations and morphological evolution. According to thermogravimetric analysis (TGA), PVP completely decomposed at 450°C, and fiber stabilization started at 500°C. With distinctive vibrational modes at 285, 600, and 635 cm⁻¹, whose intensities rose at higher temperatures, Raman spectroscopy verified the production of CuO at 400 °C. X-ray diffraction (XRD) investigation at 600°C showed enhanced crystallinity and phase purity, with noticeable peaks at the (002), (111), and (200) planes that corresponded to the monoclinic CuO phase. Following calcination, the complete elimination of polymeric functional groups was verified by Fourier-transform infrared (FTIR) spectroscopy. Fiber diameter was significantly reduced by atomic force microscopy (AFM), with an average of 1560 nm at 600 °C. Under blue light, fluorescence microscopy revealed a porous film-like shape and distinct fiber visibility. All of these findings point to 600 °C as the ideal calcination temperature for producing CuO nanofibers that are structurally robust and well-crystallized, making them promising candidates for use in electrical and sensing applications.
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15
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Ponente: Terry Paul Cevallos Rios
Escuela: Yachay Tech - Carrera: Física
Physics Applets: Habitable Zones around Stellar Systems.
Physics applets can be used as an educational tool to encourage and strengthen the interest in astrophysics and exoplanet exploration. Here, we study how physical laws can determine the conditions for the possible existence of life in other stellar systems in an intuitive way. We develop a python-, javascript-, and HTML-based applet to model habitable zones around real stellar systems. We use the stellar radius, luminosity, surface temperature, greenhouse coefficients, and radiative flux to calculate the effective temperature around each star and estimate the size of the so-called Habitable Zone. Our interactive applet allows us to visualize the orbits of exoplanets and regions around their stars where liquid water can exist (i.e., the Habitable Zones). In addition, our applet includes a temperature profile, which represents how the temperature varies as a function of the distance to the star. These interactive graphs allow for the visualization of the position of each exoplanet in its stellar system, showing estimates of its equilibrium and surface temperatures according to documented properties such as albedo and greenhouse effect.
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16
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Ponente: Francisco Alexander Puente Torres
Escuela: Escuela Politécnica Nacional - Carrera: Física
Transporte de carga en uniones moleculares grafito-molécula-oro
This work is focused on the conductance and charge transport mechanism of a graphite-4,4' biphenyl dithiol-gold molecular junction. Current peaks were observed in the range of 750 mV to -750 mV. Current rectification was found for values exceeding |450| mV. The main charge transport mechanism identified was coherent tunneling. Specifically, the transport is non-resonant for voltages between -600 mV and 600 mV, while it is resonant for values greater than |750| mV. The ohmic region of the highly oriented pyrolytic graphite (HOPG) was determined to be between -300 mV and 300 mV, with a conductance of 0.37 nS for the 4,4’ bifenil-ditiol (BPDT) in this region.The behavior of the HOPG-BPDT-Au system is analogous to a Schottky diode, suggesting that HOPG is a suitable material for fabricating nanoscale diodes. These findings indicate potential applications of this molecular junction in Molecular Electronics for devices such as rectifying diodes and logic gates.
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17
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Ponente: Juan Andrés Castro Piña
Escuela: Yachay Tech - Carrera: Física
Magnetohydrodynamics of dense gas in multi-phase galactic winds
Numerical simulations of wind-cloud systems are essential to understanding the effects of magnetic fields on dense gas clouds embedded in diffuse winds. In single cloud models, it has been demonstrated that magnetic fields transverse to the wind can shield clouds protecting them from ablation. However, magnetic effects on models with multiple clouds are less understood and require dedicated simulations. In this thesis, we study the magnetohydrodynamics of systems of winds interacting with multiple clouds in circumgalactic environments. The objective of the thesis is to numerically study whether or not magnetic shielding and magnetic draping prevails in systems with multiple clouds and how their effects compare to other known physical processes, such us hydrodynamic shielding and dense gas recondensation.
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18
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Ponente: Yorlan Males-Araujo
Escuela: Yachay Tech - Carrera: Física
Climbing into the clouds (with a not-so-smart hiker)
By-cloud analysis has proven to be quite convenient when studying the structure of groups of turbulent clouds in astrophysics. Because of that, we present an explanation of the main insights and processes of the FellWalker algorithm for identifying clumps given a group of clouds. Such algorithm works, as the name suggests, by "walking" pixel by pixel via steepest ascent until reaching a summit, and then assigning all visited pixels to a specific clump until all valid pixels are given an ID, e.g. 21. We have successfully applied such algorithm to our own synthetic clouds, and, after calibrating some parameters, obtained great results.
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19
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Ponente: Gustavo Ramon Campi Ortiz
Escuela: Yachay Tech - Carrera: Física
Emerging Copper-Pyridyl Nanoporous Network MOF Analysis
Two-dimensional (2D) metal-organic frameworks (MOFs) offer promising properties for catalysis, gas separation, and photovoltaic applications. In this work, we investigate the self-assembly of 1,3,5-tris[4-(pyridine-4-yl)phenyl]benzene (TPyPB) molecules on a Cu(111) surface. Using a combination of scanning tunneling microscopy (STM), Fourier-transform infrared spectroscopy (FTIR), and density functional theory (DFT) calculations, we demonstrate the formation of a nanoporous MOF network mediated by Cu adatoms via N–Cu–N coordination. STM images reveal distinct molecular arrangements consistent with our DFT-optimized models, while FTIR spectra highlight the vibrational modes characteristic of the organometallic bonding. Optical absorption spectra (OAS) and excitonic density analysis also suggest potential for optoelectronic applications. Our results provide direct evidence for MOF formation and establish FTIR intensity ratios as a reliable tool for identifying such networks.
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20
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Ponente: Luis Alexander Andrade Solórzano
Escuela: Yachay Tech - Carrera: Física
Analytical and Computational Modelling of 3D Astrophysical Magnetospheres
Magnetic fields play a key role in shaping the dynamics of clouds in the interstellar medium (ISM). The topology of magnetic fields can influence shock propagation and particle acceleration. In this poster, we present analytical 3D models of astrophysical magnetic fields, including dipolar, toroidal, and poloidal configurations. We derive their mathematical expressions in Cartesian coordinates from cylindrical and spherical formulations found in the literature. The analytical models are subsequently implemented in Python code to enable the 3D visualisation of the resulting magnetospheres. As part of the computational analysis, the magnetic field divergence is evaluated to verify the solenoidal condition, ensuring that the field lines form closed loops without sources or sinks. Additionally, the scientific visualisation software VisIt is used to enhance the detail of the 3D representations. Our method integrates analytical and computational modelling with advanced visualisation tools to study the topology of magnetic fields in astrophysical plasmas.
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21
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Ponente: Rolando Sebastián Sánchez García
Escuela: Yachay Tech - Carrera: Física
First principles studies of 7x7 graphene superlattices with topological defects
Graphene’s unique properties have made it a promising material for many emerging areas. However, the absence of a bandgap and magnetic attributes restricts its potential for application in nanoelectronics and spintronics. These properties can be significantly altered by topological defects, such as Flower-Like Defects (FLD), which can also offer insights into their efficient applicability in those fields. Previous studies show that FLD in 5x5 and 6x6 supercells remove the characteristic Dirac cone, while in 7x7 supercells, the Dirac cone is recovered. Consequently, these findings prompt inquiries regarding the significance of defect size and symmetry in the electronic structure of graphene. This study examines the impact of FLD in 7x7 supercells on the electronic properties of graphene in different configurations. Using density functional theory (DFT), we analyze changes in band structure, density of states, and magnetic properties.
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22
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Ponente: Sergio Anderson Cañamar Maldonado
Escuela: Yachay Tech - Carrera: Nanotecnología
Magnetic - Chitosan Microspheres for Microplastics Recovery
Microplastics pose an increasing threat to aquatic ecosystems, not only because of their persistence but also due to their potential toxic effects on wildlife and human health. In this work, It was developed and tested magnetic chitosan microspheres as a biodegradable solution for microplastic removal. By combining chitosan with magnetite nanoparticles and EDTA, we created functionalized spheres with enhanced magnetic and adsorption capabilities. These materials were thoroughly characterized using FTIR, Raman spectroscopy, SEM, and TGA. To evaluate their performance, we carried out UV-Vis adsorption tests using both commercial polymers and chemically degraded PET, mimicking real-world microplastic contamination. The results clearly showed that the microspheres containing both magnetite and EDTA were the most effective, successfully capturing and removing PET particles from water.
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23
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Ponente: Rolando Sebastián Sánchez García
Escuela: Yachay Tech - Carrera: Física
Self-control of escape in dynamical systems.
Many dynamical systems exhibit the phenomenon of escape, where trajectories in the phase space of the system display a transient chaotic behavior before diverging to infinite. In numerical integration of differential equations, the phenomenon is characterized by overflow of the variables. In some situations, it is desirable to avoid or control escape. Conventional control methods rely on small external perturbations to extend the transient chaos and effectively suppress the escape. In this work, we propose a novel method, which we call Self-control of Escape, where global interactions among coupled dynamical elements, that would individually escape, induce suppression of escape without any external intervention. Thus, Self-control of Escape can be regarded as an emergent collective behavior in an autonomous dynamical system, with potential applications in physics, biology, neuroscience, and engineering. To validate our approach, we developed a dedicated Python package, Sophrosyne, which we used to carry out all numerical simulations.
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24
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Ponente: Angel Dickerson Mendez Cevallos
Escuela: Escuela Politécnica Nacional - Carrera: Física
Sensor de resonancia plasmónica superficial de escaneo espectral para evaluar la dinámica de las interacciones moleculares e intensificación de fluorescencia
En este trabajo se desarrolló y evaluó un sistema de resonancia de plasmón superficial (SPR) basado en escaneo de longitud de onda, como alternativa a configuraciones con interrogación angular. Montado en geometría de Kretschmann, el sistema integra componentes ópticos y electrónicos que permiten monitorear en tiempo real cambios basados en el índice de refracción. El sistema fue empleado para estudiar procesos dinámicos a nivel molecular. En el estudio se aborda la funcionalización química de la superficie del sensor mediante el protocolo de activación con EDC/NHS para la inmovilización selectiva de biomoléculas sobre la superficie. Siguiendo esta metodología se cuantificaron parámetros cinéticos en la interacción entre lactasa y lactosa, mediante el modelo de Michaelis-Menten. Asimismo, el sistema demostró potencial para incrementar señales fluorescentes de moléculas como Rodamina 6G y puntos cuánticos de grafeno dopados con nitrógeno.
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25
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Ponente: Mariannly Estefany Marquez Urdaneta
Escuela: Yachay Tech - Carrera: Física
Quantum Error Correction in Holography
Quantum error correction (QEC) is an essential concept in quantum computing, ensuring resilience against noise and decoherence. However, QEC has also been increasingly recognized as fundamental to understanding the structure of spacetime. The Anti de Sitter/ conformal field theory (AdS/CFT) correspondence suggests that the emergence of spacetime is deeply linked to quantum information. Recent work has demonstrated that the bulk-boundary mapping in AdS exhibits the properties of a quantum error-correcting code. In this mini-review, we will explore both the development of holographic quantum error correction (HQEC) and its implementation in quantum algorithms such as the Pastawski-Yoshida-Harlow-Preskill (HaPPY) code. We will also focus in particular on the implications of HQEC for black hole information. A clear understanding of the interplay between holography and QEC can provide new perspectives on the nature of spacetime while potentially advancing quantum technologies.
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26
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Ponente: Juan Gabriel Balarezo Balarezo
Escuela: Yachay Tech - Carrera: Física
First Principles and Machine Learning Investigations into the Atomic and Mechanical Properties of Cement Hydrates (CSH)
Concrete is the second-most-used substance in the world after water, with more than 35 billion tons produced yearly. Yet, understanding the atomic and mechanical properties of the main component of concrete, calcium-silicate-hydrate (C-H-S) cement hydrates—the complex binder phase of concrete—still poses a challenge. In this work, we aim to investigate cement hydrates' atomic and mechanical properties leveraging density-functional theory (DFT) and machine learning (ML) tools. We use DFT to study the electronic structure, bonding, and mechanical responses of C-S-H at the atomic level. Afterwards, we use ab into molecular dynamics (AIMD) with ML to create a force filed on the fly for C-S-H. This will allow us to accurately simulate and capture the complex atomic interactions of cement hydrates while reducing the computation time. By integrating DFT, AIMD, and ML, we seek to provide deeper insights into the fundamental properties of C-S-H and develop a predictive model that could inform the design of new cementitious materials.
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27
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Ponente: Angel Ariel Gómez Bermeo
Escuela: Yachay Tech - Carrera: Nanotecnología
Natural pH Indicator: Color Transformations in Red Cabbage Extract
Red cabbage extract acts as a natural pH indicator, changing color when it reacts with acidic or alkaline substances. Adding lemon (acid) turns the solution red, while adding soap (base) turns it blue. This experiment demonstrates how anthocyanins in cabbage respond to chemical changes, illustrating basic principles of acids and bases in a simple, visual way.
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28
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Ponente: Sebastián Stefano Castillo Flores
Escuela: Yachay Tech - Carrera: Nanotecnología
Synthesis and characterization of CNTs on thin metallic layers.
Carbon nanotubes are materials with immense potential to enhance and reinforce the properties of other compounds, as well as the capability to revolutionize various technologies. However, one of the main challenges lies in scaling their synthesis to an industrial level through viable processes derived from laboratory-developed techniques. In this context, steel coated with a nickel layer, deposited via sputtering, has been used as a substrate for the growth of multi wall carbon nanotubes (MW-CNT). The synthesis of these nanostructures was carried out using the chemical vapor deposition (CVD) technique, employing acetylene as the precursor gas in an inert atmosphere at a temperature of 750 °C. As part of the substrate preparation strategy, annealing processes conducted prior to the synthesis to modify and optimize the surface characteristics were studied. To verify the growth of the nanotubes, characterizations were performed using Raman spectroscopy and atomic force microscopy (AFM), which revealed uniform growth of multi-walled nanotubes.
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29
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Ponente: IVAN JOSUE VARGAS LOPEZ
Escuela: Yachay Tech - Carrera: Nanotecnología
Synthetic Route from Silver Nanoparticles to Nanosponges
One-step synthesis of silver nanoparticles (Ag NPs) and nanosponges using AgNO₃, collagen, and Guayusa. The combination of these reagents allowed the simultaneous formation of both nanostructures, characterized using key techniques: UV-Vis, SEM, and Raman. Collagen acted as a stabilizer, while Guayusa promoted reduction. This simple method offers potential for future synthesis.
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30
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Ponente: Jhon Steeven Villacís Ramón
Escuela: Yachay Tech - Carrera: Física
Self-control of Supertransient Collective Chaos in Coupled Map Networks
Supertransient collective chaos is an emergent phenomenon that consists of the appearance of a chaotic time window (before reaching a stable state) when periodic maps are coupled together, with the particularity that the length of this chaotic window depends exponentially on the number of coupled elements. Thus, being a very curious and unexpected phenomenon in which chaos arises from stable periodic elements. In this work, we study how various coupling parameters, specially the network topology, affect the length of the chaotic window, allowing us to propose a mechanism for autonomous control of this phenomenon. Our method can be extended to networks of coupled time-continuous periodic dynamical systems.
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Ponente: Silvia Gabriela García Moreno
Escuela: Yachay Tech - Carrera: Física
Synchronization and chimera states in neuronal dynamical networks.
The study of synchronization and chimera states in neuronal dynamical networks has attracted significant attention due to its relevance in understanding brain functionality and pathological conditions. This research focuses on the investigation of synchronization and chimera states in map-based neuronal dynamical networks, which provide a computationally efficient and conceptually simple framework for modeling complex neuronal interactions. Using discrete-time maps with neuron-like behavior, we investigate the emergence and stability of synchronized patterns within large-scale neuronal networks. This work aims to explore how network topology, heterogeneity, coupling schemes, and intrinsic neuronal parameters influence the coexistence of synchronized (coherent) and chimera states. Simulations and analytical techniques will be used to identify critical parameters that govern transitions between synchronization and chimera states. These results will provide insights into some neurological brain disorders, such as epilepsy. The findings of this research will contribute to the broader understanding of how complex neuronal networks self-organize and maintain functional diversity.
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32
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Ponente: Luis Xande Ibarra Burbano
Escuela: Yachay Tech - Carrera: Nanotecnología
Beeswax and Olive Oil for Dragon's Blood Drug Delivery
This study explores the fabrication of nanostructured lipid carriers (NLCs) utilizing naturally derived lipids—beeswax as the solid lipid and olive oil as the liquid lipid via a emulsion based approach. In this investigation, a simple procedure involving the heating and stirring of olive oil with beeswax was followed by the incorporation of liquid vitamin C as an active ingredient and Dragon's blood as deliver subject. The process resulted in the formation of a cream-like emulsion with notable changes in color and texture, along with distinctive olfactory properties. This report outlines the experimental rationale, theoretical background, and initial methodology, which form the basis for the further optimization and characterization of these biocompatible NLCs.
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33
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Ponente: Ian Steven Boada Yépez
Escuela: Yachay Tech - Carrera: Nanotecnología
From Waste to Medicine: Cocoa Bean Shell-AgNPs Hydrothermal Synthesis for Enhanced Chitosan-Gentamicin Films for Potential Drug Delivery
Ecuador, the leading cocoa exporter in America and the fourth-largest worldwide, generates significant waste from cocoa production, including Cocoa Bean Shells (CBS). These shells are a generous source of bioactive compounds, such as phenolics, flavanols, pectin, and essential minerals. Exploiting this underutilized source, a green and scalable hydrothermal approach to produce AgNP-functionalized carbon fibers from CBS was developed. The products of this reaction were characterized in terms of their chemical composition (FTIR and Raman). From a biomedical perspective, chitosan-based films loaded with gentamicin and CBS-AgNPs for controlled drug delivery were fabricated. The films were characterized for chemical composition (FTIR), and drug release kinetics, demonstrating a excepted sustained antimicrobial efficacy against Gram-negative (Escherichia coli) bacteria.
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34
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Ponente: Carlos Angel Gallegos Estrada
Escuela: Yachay Tech - Carrera: Nanotecnología
Development and Characterization of a Biopolymer-Based Nanocomposite
This thesis presents the development of a biodegradable nanocomposite using cassava starch as the base polymer, reinforced with copper oxide (CuO) and silver (Ag) nanoparticles. The material was synthesized to improve the functional properties of starch by combining it with the known advantages of metallic nanoparticles. The nanocomposite was characterized using Raman spectroscopy, UV-Vis, X-ray diffraction (XRD), AFM, and FTIR. Results showed successful incorporation of the nanoparticles and changes in the structure and chemical properties of the starch. This material has potential for applications in packaging or environmental uses.
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