Maestría en Física Aplicada (tesis)
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Ítem Spatial resolution enhancement in reflection and transmission digital holographic microscopy with structured illumination(Universidad EAFIT, 2024) Obando-Vásquez, Sofía; Trujillo Anaya, Carlos Alejandro; Restrepo, René; Doblas, AnaÍtem Diseño de un videojuego educativo con elementos de realidad virtual para la enseñanza de conceptos de física cuántica como el efecto fotoeléctrico aplicado en un entorno escolar(Universidad EAFIT, 2024) Jaramillo Jaramillo, Cristian Camilo; Diaz León, Christian AndrésThe importance of teaching quantum physics in secondary education lies in the need to familiarize students with scientific concepts that already influence our current technological environment. Additionally, the lack of motivation to study careers related to physics can be addressed by demonstrating the relevance of this area from early stages of education. Despite not completing the total development of the video game, virtual experiences, including the photoelectric effect experiment, managed to capture the attention and motivate the participants of the tests. It is recommended to expand the study with a larger sample and evaluate the long-term impact of the video game on student learning. This work provides a new perspective on the use of educational technology in teaching quantum physics in secondary education. The document presents the design of an educational video game created with Unity and virtual reality elements to teach concepts of quantum physics in secondary education, evaluating its effectiveness through Keller's Instrumental Material Motivational Survey (IMMS).Ítem Síntesis y caracterización de nanocompositos obtenidos a base de nanopartículas de magnetita-maghemita recubiertas con un polímero biocompatible(Universidad EAFIT, 2024) Páez Pinzón, Johan Sebastián; Velásquez Torres, Álvaro Andrés; Gómez Ramírez, Luis Alejandro; Urquijo Morales, Jeaneth PatriciaÍtem SEMAI Particle Analyzer(Universidad EAFIT, 2024) Restrepo Rivera, David; Quintero, Olga LucíaÍtem Measurements of urban aerosol properties by developing a scanning depolarization lidar system(Universidad EAFIT, 2022) Hoyos Restrepo, Manuela; Montilla Rosero, ElenaÍtem Síntesis y caracterización de películas delgadas de Reb2 en Co-deposición con Ti mediante la técnica Magentrón Sputtering(Universidad EAFIT, 2023) Ruiz Daza, Carolina Rocío; Arroyave Franco, Mauricio; Palacio Espinosa, Claudia ConstanzaUsing the reactive magnetron sputtering technique, Rhenium Boride films in co-deposition with Titanium were grown on steel substrates at 100°C. To improve the adhesion of the coating a stack of twelve Ti/TiN bilayers was grown using a reactive atmosphere of argon and nitrogen with a ratio Ar/N2=40/1.4 sccm meanwhile, radio frequency power, negative bias voltage, working pressure, and temperature of 100°C were fixed in the experiments to produce the (ReB2):Ti. A design of experiments with a fraction-factorial style was made with four inputs and two outputs with 3 different levels. A matrix of procedures was defined for a total of 9 experiments. The titanium target was powered with 30 and 60 watts during the co-deposition with ReB2 to evaluate the content of titanium at different ratios. Structural and compositional measurements were carried out using SEM, XRD, and XPS to confirm the formation of (ReB2):Ti and AFM analysis to measure the thickness and observe the morphology of samples. Furthermore, mechanical properties were measured with nano hardness equipment, showing that the addition of titanium to ReB2 coating has a significant improvement on the chemical stability of ReB2 on steel and preserves mechanical properties of hardness and high Young’s module, which makes the material suitable for applications in the mechanical industry reaching hardness around 20 GPa.Ítem Evaluación computacional del efecto de los parámetros de proyección en las propiedades termocinéticas de las partículas en vuelo en la técnica de proyección térmica vía plasma usando Ansys Fluent(Universidad EAFIT, 2023) Álvarez Uribe, Alejandro; Palacio Espinosa, Claudia ConstanzaÍtem Control adapatable inteligente para exoesqueleto de rehabilitación(Universidad EAFIT, 2023) Ortiz Toro, Yarlin Andrea; Quintero Montoya, Olga LucíaÍtem Development of a linear diattenuation sensitive semi-autonomous and portable digital lensless holographic microscope(Universidad EAFIT, 2022) Lopera Acosta, Maria Josef; Trujillo Anaya, Carlos AlejandroThis document presents the development of a linear diattenuation sensitive, semi-autonomous and portable digital lensless holographic microscope (DLHM). With the development of this project, we aim to improve the performance of this microscopy technique and to broaden the possibilities for a portable DLHM device. We believe our microscope can potentially be used in the diagnosis of diseases. In order to address this aim, the following aspects were investigated within the scope of this project. i) The design of specialized illumination sources for DLHM that are efficient, mechanically stable, and easy to align. ii) The implementation of a DLHM sensitive to the linear diattenuation response of samples. iii) The study of machine-learning based autofocusing methods to be applied to DLHM holograms. iv) The design of specialized software to acquire and reconstruct DLHM holograms and iiv) the design and manufacture of proper mechanical couplings that integrate the DLHM setup with the cellphone’s digital sensor. Five papers and five proceedings are the resultant products of this thesis project. They constitute part of the core of this thesis and are attached by the end of the document.Ítem Efecto de modificaciones de las cadenas carbonadas sobre el comportamiento elástico y de fase de bicapas lipídicas mediante dinámica molecular(Universidad EAFIT, 2022) Quintero Gómez, María Clara; Gómez Ramírez, Luis Alejando; David Caro, Jorge LeónÍtem Forest cover change detection with synthetic aperture radar satellite data(Universidad EAFIT, 2022) Guisao Betancur, Ana Maria; Marulanda Tobón, AlejandroÍtem Fabricación y caracterización de un fotoánodo de hematita para fotoelectrólisis(Universidad EAFIT, 2022) Herrera Guerra, Juliana; Jaramillo Ocampo, Juan Manuel; Montoya Isaza, SebastiánÍtem Diseño y construcción de un sistema de medición de tasa de absorción específica (SAR) para sistemas de nanopartículas magnéticas(Universidad EAFIT, 2022) Ospina Duque, Ana María; Velásquez Torres, Álvaro Andrés; Velásquez Salazar, Abilo AndrésÍtem Miniaturización de antenas tipo microstrip mediante recubrimientos con materiales ferroeléctricos(Universidad EAFIT, 2021) Mosquera Palacio, Diana Marybel; Marulanda Bernal, José IgnacioÍtem Efecto de los esfuerzos residuales sobre el comportamiento mecánico de componentes fabricados en acero sometidos a cargas cíclicas(Universidad EAFIT, 2021) Arango Gálvez, Juan Camilo; Palacio Espinosa, Claudia ConstanzaÍtem Computational aberration correction in optical coherence tomography with phase-unstable systems(Universidad EAFIT, 2020) Ruiz Lopera, Sebastián; Restrepo Gómez, RenéOptical coherence tomography (OCT) is an imaging technique widely use in medicine. OCT is an optical technique, therefore it is prone to optical aberrations that degrade image quality, making it difficult to visualize fine structures with high resolution.This work presents SHARP, a computational technique for correction of aberrations in OCT, that is compatible with most standard systems, and we present results in eye, airway and skin imagingÍtem Diseño y desarrollo prototipo de un coronógrafo digital adaptativo de vórtices ópticos(Universidad EAFIT, 2020) Cadavid Muñoz, Juan José; Restrepo Gómez, René; Rueda Muñoz, Edgar AlbertoÍtem Producción de recubrimientos de nitruro de renio (ReNx) depositados mediante la técnica de magnetrón sputtering reactivo(Universidad EAFIT, 2020) Hernández Higuita, Javier Ignacio; Arroyave Franco, Mauricio; Palacio Espinosa, Claudia ConstanzaÍtem Comportamiento de fase y elástico de bicapas lipídicas mediante Dinámica Molecular(Universidad EAFIT, 2020) Valderrama Maya, Margarita María; Gómez Ramírez, Luis Alejandro; David Caro, Jorge LeónÍtem Herramienta de laboratorio para la caracterización óptica de aerosoles atmosféricos(Universidad EAFIT, 2020) Bolaños Marín, Daniela; Montilla Rosero, Elena
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