Listar Publicaciones Científicas Nanociencias y Materiales por autor "Ávalos Borja, Miguel"
Mostrando ítems 1-20 de 24
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Caracterización estructural, química y morfológica de nanopirámides truncadas de Au por microscopía electrónica de transmisión
Mendoza Ramírez, Miriam Carolina (2015-10)"Structural elucidation of materials, using X-Rays is restricted to crystals around 50 μm. For a detailed analysis of "nanocrystals", a technique who allows atomic resolution and reliable intensity data (cinematic diffraction) ... -
Chemical stability of superhard rhenium diboride at oxygen and moisture ambient environmental conditions prepared by mechanical milling
Granados Fitch, Mizraim Guillermo; Quintana Melgoza, Juan Manuel; Juárez Arellano, Erick Adrián; Ávalos Borja, Miguel (The American Ceramic Society, 2018)"In this study, rhenium diboride (ReB2) was obtained by mechanosynthesis at 640 minutes of milling. The obtained ReB2 was stored at oxygen and moisture ambient environmental conditions to know the chemical stability. The ... -
Coexistence of two-photon absorption and saturable absorption in ion-implanted platinum nanoparticles in silica plates
Torres Torres, Carlos; Bornacelli, J.; Can-Uc, Bonifacio Alejandro; Silva Pereyra, Héctor Gabriel; Rodríguez Fernández, Luis; Ávalos Borja, Miguel; Labrada Delgado, Gladis Judith; Cheang Wong, Juan Carlos; Rangel Rojo, Raúl; Oliver y Gutiérrez, Alicia María (Optical Society of America, 2018)"Platinum nanoparticles were nucleated in a high-purity silica matrix by an ion-implantation method. The third-order nonlinear optical response of the samples was studied using femtosecond pulses at 800 nm with the z-scan ... -
Compressibility, microcalorimetry, elastic properties and EELS of rhenium borides
Neun, Christopher; Petermüller, Benedikt; Bayarjargal, Lkhamsuren; Morgenroth, Wolfgang; Ávalos Borja, Miguel; Silva Pereyra, Héctor Gabriel; Spahr, Dominik; Schmuck, Felix; Milman, Victor; Huppertz, Hubert; Winkler, Bjoern (Elsevier, 2018)"Based on synchrotron X-ray diffraction on phase-pure samples, we revised the bulk moduli of the rhenium borides Re7B3 (B-0 (Re7B3) = 391(5) GPa) and orthorhombic Re3B (B-0 (orthorhombic Re3B) = 393(4) GPa) and determined ... -
Controllable biosynthesis of small silver nanoparticles using fungal extract
Quester, Katrin; Ávalos Borja, Miguel; Castro Longoria, Ernestina (2016-04)"The search for reliable and eco-friendly methods for the production of nanoscale materials is an important aspect of nanotechnology. Silver nanoparticles (AgNPs) are of special interest because of their antimicrobial ... -
Dual function of EDTA with silver nanoparticles for root canal treatment-A novel modification
Martínez Andrade, Juan Manuel; Ávalos Borja, Miguel; Vilchis Nestor, Alfredo Rafael; Sánchez Vargas, Luis Octavio; Castro Longoria, Ernestina (2018)"The chelating and antimicrobial capacity of a novel modification of 17% EDTA with silver nanoparticles (AgNPs) (EDTA-AgNPs) was evaluated in-vitro for root canal treatment (RCT). The EDTA-AgNPs solution was characterized ... -
Effect of ball to powder ratio on the mechanosynthesis of Re2C and its compressibility
Martínez García, Alfredo; Navarro Martínez, Ana Karín; Neun, Christopher; Bayarjargal, Lkhamsuren; Morgenroth, Wolfgang; López Vázquez, Erick; Ávalos Borja, Miguel; Winkler, Bjoern; Juárez Arellano, Erick Adrián (Elsevier, 2019)"The mechanosynthesis of hexagonal rhenium carbide (Re2C) from the elements is explored as a function of the balls to powder ratio (BPR). Burgios's equation has been used to calculate the accumulated energy (Delta E-accum) ... -
Enhanced refrigerant capacity in two-phase nanocrystalline/amorphous NdPrFe17 melt-spun ribbons
Sánchez Valdés, Cesar Fidel; Ibarra Gaytán, Pablo Jesús; Sánchez Llamazares, José Luis; Ávalos Borja, Miguel; Álvarez Alonso, Pablo; Gorria, Pedro; Blanco Rodríguez, Jesús Angel (2014-05)"he magnetocaloric properties of NdPrFe17 melt-spun ribbons composed of nanocrystallites surrounded by an intergranular amorphous phase have been studied. The nanocomposite shows two successive second-order magnetic phase ... -
High-pressure synthesis of β-Ir4B5 and determination of the compressibility of various iridium borides
Petermüller, Benedikt; Neun, Christopher; Wurst, Klaus; Bayarjargal, Lkhamsuren; Zimmer, Dominik; Morgenroth, Wolfgang; Ávalos Borja, Miguel; Becerril Juárez, Ignacio Guadalupe; Muehlbauer, Martin; Winkler, Bjoern; Huppertz, Hubert (American Chemical Society, 2018)"A new iridium boride, beta-Ir4B5, was synthesized under high-pressure/high-temperature conditions of 10.5 GPa and 1500 degrees C in a multianvil press with a Walker-type module. The new modification beta-Ir4B5 crystallizes ... -
Mechanosynthesis of metastable cubic delta-Ta1-xN
García Mendoza, Teresa; Martínez García, Alfredo; Becerril Juárez, Ignacio Guadalupe; López Vázquez, Erick; Ávalos Borja, Miguel; Valeria Zaragoza, Mario; Juárez Arellano, Erick Adrián (Elsevier, 2020)"The formation of the cubic ?-Ta1?xN phase by high-energy ball-milling from tantalum and boron nitride (h-BN) is explored. Two different molar ratios Ta:BN, 1:1 and 2:1, were used. X-ray diffraction, scanning electron ... -
Nanoestructuras y su caracterización por medio de microscopía electrónica de transmisión; ciencia y arte
Mendoza Ramírez, Miriam Carolina; Ávalos Borja, Miguel (UNAM, 2020)"The description of nanometric systems is still being a challenging topic, for this reason the transmission electron microscopy (TEM) scope is exemplified in a didactic way using several nanosystems (Au nanoparticles and ... -
Obtención y caracterización de nanopartículas de plata soportadas en fibra de algodón
López Iturbe, J; Vilchis Nestor, Alfredo Rafael; Sanchez Mendieta, Víctor; Ávalos Borja, Miguel (2013)"En este trabajo se prepararon biocompositos de nanopartículas de plata utilizando fibra de algodón como soporte y Camellia sinensis como agente reductor. Para la preparación de los biocompositos primero se llevó a cabo ... -
Plasmonic sensing of aqueous-divalent metal ions by biogenic gold nanoparticles
Silva De Hoyos, Luisa Elena; Sanchez Mendieta, Víctor; Vilchis Nestor, Alfredo Rafael; Camacho López, Miguel Angel; Trujillo Reyes, Jésica; Ávalos Borja, Miguel (Hindawi Publishing Corporation, 2019)"The chemical interaction between biogenic gold nanoparticles (AuNPs) and several metal (II) ions can be regarded as a practical, twofold, colorimetric, and plasmon resonance sensing method for the recognition of some ... -
Platinum nanoclusters in silica: Photoluminescent properties and their application for enhancing the emission of silicon nanocrystals in an integrated configuration
Bornacelli, J.; Silva Pereyra, Héctor Gabriel; Rodríguez Fernández, Luis; Ávalos Borja, Miguel; Oliver G., Alicia (2016-09)"We studied photoluminescence of ion implanted platinum nanoclusters embedded in silica. Pt ions were implanted at 2 MeV and the Pt nanoclusters were then nucleated by thermal treatment under either argon, air, or a reducing ... -
SERS properties of different sized and shaped gold nanoparticles biosynthesized under different environmental conditions by Neurospora crassa extract
Quester, Katrin; Ávalos Borja, Miguel; Vilchis Nestor, Alfredo Rafael; Camacho-López, Marco Antonio; Castro Longoria, Ernestina (2013-10)"Surface-enhanced Raman scattering (SERS) is a surface-sensitive technique that enhances Raman scattering by molecules adsorbed on rough metal surfaces. It is known that metal nanoparticles, especially gold and silver ... -
Síntesis de carburos, sulfuros y boruros de renio y su evaluación en la producción de hidrógeno a partir de biomasa
Granados Fitch, Mizraim Guillermo (2019-10)"En esta tesis de doctorado se llevó a cabo la síntesis mecanoquímica de carburos (Re2C (2:1) y Re2C (1:1)), boruros (Re3B y ReB2) y sulfuros de renio (ReS2 (1:2) y ReS2 (2:7)). Estos materiales fueron caracterizados por ... -
Síntesis de catalizadores NiMoW y su evaluación catalítica en la reacción de hidrodesulfuración del dibenzotiofeno
Gallegos Hernández, Anayeli Yazmín (2020-09-24)"En la presente tesis, varios catalizadores soportados de NiMoW se sintetizaron y probaron en la reacción de hidrodesulfuración (HDS) del dibenzotiofeno (DBT). Se evaluó la influencia del bromuro de cetil-trimetil amonio ... -
Síntesis de materiales a base de renio y sus propiedades catalíticas en la producción de hidrógeno a partir de biomasa
Granados Fitch, Mizraim Guillermo (2015-02)"En este trabajo experimental se sintetizo la fase de carburo de renio (ReC640) y diboruro de renio (ReB640) por molienda mecánica a partir de mezclas de los elementos químicos constitutivos. La fase de Re2C fue obtenida ... -
Síntesis de pozos cuánticos de GaN/InGaN/GaN en estructura cúbica para emisión sintonizada de luz
Orozco Hinostroza, Ignacio Everardo (2016-02)"En años recientes la utilización de dispositivos de iluminación de luz blanca de estado sólido ha ido aumentando de forma significativa. El ahorro en energía y por tanto económico a largo plazo que dispositivos como LED's ... -
Síntesis y caracterización de carburos de tántalo y la relación de su microestructura con la dureza
Vázquez Pelayo, Adriana (2020-06)"En el presente trabajo se sintetizó carburo de tántalo por molienda mecánica en dos tipos de molinos: planetario (muestra 1) y vibratorio (muestra 2). La síntesis se realizó a partir de una mezcla estequiométrica de polvos ...