Article
Materials Science, Ceramics
Shane J. McCartan, Ilkan Calisir, Gary W. Paterson, Robert W. H. Webster, Thomas A. Macgregor, David A. Hall, Ian MacLaren
Summary: This study investigates the core-shell structures of BiFeO3-BaTiO3 mixed-oxide ceramics using conventional electron energy loss spectroscopy (EELS) and scanning precession electron diffraction (SPED) mapping. The results reveal the presence of a BaTiO3-rich pseudocubic shell, a BiFeO3-rich outer core, and an inner core with a different composition. These inner cores are non-polar and do not contribute to the ferroelectric properties.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Aaron C. Johnston-Peck, Russell A. Maier
Summary: The oxidation of perovskite CeAlO(3) leads to eutectoid transformation into CeO2 and Al2O3. The resulting microstructure exhibits lamellar features indicating cooperative growth. The size of the lamellae is determined by the processing conditions and can range from a few nanometers to larger domains with high temperature annealing.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Salim Mejaouri, Stefania Cacovich, Philippe Baranek, Baptiste Berenguier, Iwan Zimmermann, Armelle Yaiche, Dominique Loisnard, Jean Rousset, Stephane Collin
Summary: Moisture induces changes in the performance and stability of lead halide perovskite solar cells by altering the nature of the absorber through phase transition or segregation. Understanding the material's evolution in wet environments is crucial for optimizing device performance. Analyzing the degradation products and their optical and chemical properties provides insights into the degradation mechanisms and potential for improving stability.
Article
Chemistry, Analytical
Olivier De Castro, Jean-Nicolas Audinot, Hung Quang Hoang, Cherif Coulbary, Olivier Bouton, Rachid Barrahma, Alexander Ost, Charlotte Stoffels, Chengge Jiao, Mikhail Dutka, Michal Geryk, Tom Wirtz
Summary: The article introduces the use of magnetic sector secondary ion mass spectrometry (SIMS) on a widely used instrument, focused ion beam (FIB)-scanning electron microscopy (SEM), for nanoscale investigations. It provides a detailed description of the instrument's layout and performance, as well as the research results obtained in various fields. The system demonstrates versatile capability for high-performance correlative studies in materials science and life sciences.
ANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Nan Liu, Yi Cao, Yin-Lian Zhu, Yu-Jia Wang, Yun-Long Tang, Bo Wu, Min-Jie Zou, Yan-Peng Feng, Xiu-Liang Ma
Summary: The study presents a self-assembled uniform biphasic system as a potential stable and enduring RRAM medium, demonstrating advantages in stability, uniformity, and durability for further application in RRAM devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Jiuk Jang, Sangyoon Ji, G. Krishnamurthy Grandhi, Han Bin Cho, Won Bin Im, Jang-Ung Park
Summary: The study presents a multimodal integrated X-ray detector that allows simultaneous visualization of internal structures and morphologies of an object, and enables digital visuotactile examinations through visual and tactile dual modalities. Results demonstrate the system's high accuracy and flexibility in in vivo X-ray imaging and pressure sensing in a live rat.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Devon S. Jakob, Nengxu Li, Huanping Zhou, Xiaoji G. Xu
Summary: This article introduces a novel method to generate Coulombic force in KPFM, increasing the spatial resolution to approximately 25 nm. By integrating PiFM, high spatial resolution chemical distributions and surface potential maps can be obtained concurrently. This is expected to facilitate characterizations of nanoscale electrical properties of photoactive materials, semiconductors, and ferroelectric materials.
Article
Physics, Applied
Carles Bosch, Joerg Lindenau, Alexandra Pacureanu, Christopher J. Peddie, Marta Majkut, Andrew C. Douglas, Raffaella Carzaniga, Alexander Rack, Lucy Collinson, Andreas T. Schaefer, Heiko Stegmann
Summary: Correlative multimodal imaging is a valuable method for investigating complex structural relations in life sciences. It requires establishing sample preparation workflows that are compatible with multiple imaging techniques. This can involve imaging a fluorescently labeled region of interest in a biological soft tissue sample with light microscopy before staining the specimen with heavy metals for higher resolution structural imaging.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Carsten Dittmayer, Hans-Hilmar Goebel, Frank L. Heppner, Werner Stenzel, Sebastian Bachmann
Summary: The study introduces a method for automated acquisition of data on all structures in EM sections, significantly improving efficiency. A sample preparation method has been established to ensure the acquisition of complete sections without artifacts. The use of LDS will greatly facilitate access to EM data for various applications.
MICROSCOPY AND MICROANALYSIS
(2021)
Article
Materials Science, Ceramics
B. Sotillo, F. A. Lopez, L. Alcaraz, P. Fernandez
Summary: This study demonstrates the potential of using niobium oxide recovered from tailings in Spain as a starting material for growing microstructures. Various characterization techniques were used to determine the properties of the resulting microrods, showing the possibility of transforming waste into high-value materials.
CERAMICS INTERNATIONAL
(2021)
Article
Plant Sciences
Hanna B. Margonska, Malgorzata Kozieradzka-Kiszkurno, Emilia Brzezicka, Lukasz P. Halinski, Kevin L. Davies, Monika M. Lipinska
Summary: Crepidium is a large genus of mainly pantropical orchids with limited information on pollination and floral morphology. Field observations show that the flowers are visited by various insects and have two forms of small liquid droplets on the lip surface. Through GC-MS analysis and microscopy examination, it was found for the first time that these species exhibit liquid secretion.
Article
Materials Science, Multidisciplinary
Tatsuya Kon, Hiroyuki Hosokawa, Nobuyoshi Imaoka, Kimihiro Ozaki
Summary: This study investigated the effects of solution concentration and pH value on the magnetization and coercivity of metallic Fe-Mn soft magnetic powders produced via hydrogen reduction of oxide powders. The results showed that solution concentration had no impact on coercivity, while pH value had a significant effect. The shape and grain size of the metallic Fe-Mn powders were found to be influenced by the pH value, with plate-shaped powders exhibiting increased coercivities. By optimizing the wet process conditions, the coercivity of the Fe-Mn powder was improved.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Jason F. Khoury, Leslie M. Schoop
Summary: Topological materials are significant in chemistry, physics, and engineering, with electrons behaving atypically and acting as analogs to particles in high-energy physics, impacting spintronics, catalysis, and quantum information science. While a holistic understanding of the nature of chemical bonding in these materials is lacking, delocalized bonding can lead to topological electronic structures in one-, two-, and three-dimensional systems. Chemical intuition has shown success in polymeric and square-net systems, with potential for structures in one and three dimensions.
TRENDS IN CHEMISTRY
(2021)
Article
Microscopy
James F. Nohl, Nicholas T. H. Farr, Yige Sun, Gareth M. Hughes, Serena A. Cussen, Cornelia Rodenburg
Summary: Powder materials are widely used in various fields of materials science, and scanning electron microscopy (SEM) has been developed to characterize their morphological, microstructural, and bulk chemical properties. However, SEM currently lacks the ability to provide spatially localized chemical information on powder surfaces with resolution similar to secondary electron (SE) imaging. This review discusses the potential of using energy filtered SEM for surface chemical analysis using SE hyperspectral imaging (SEHI) and compares it with other commonly used chemical characterization methods. The applicability of existing powder preparation methods for SEM to SEHI is also reviewed. The review includes examples of SEHI characterization of carbon-fiber/polyamide composite powder and lithium nickel cobalt oxide (NMC) powder surfaces, demonstrating the ability of SEHI to differentiate bonding and extract information about surface work function.
Article
Materials Science, Ceramics
J. K. Radhakrishnan, M. Kumara, Geetika
Summary: The study reveals that microwave power has a direct impact on the characteristics of ZnO nanostructures, allowing for morphology changes by adjusting microwave power. The fast growth along the high energy polar faces of ZnO is the reason for the formation of one dimensional ZnO structures, while the formation of hollow ZnO rods is due to further etching/material removal from the tip of the rods under high microwave power conditions at long growth durations.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Patricia Maldonado-Altamirano, Luis Arturo Martinez-Ara, Maria de los Angeles Hernandez-Perez, Jorge R. Aguilar-Hernandez, Maximo Lopez-Lopez, Jaime Santoyo-Salazar
Summary: This study investigates the optical, structural, and chemical properties of semiconducting CdSe nano particles with an organic shell prepared by laser fragmentation of acetone dispersed CdSe powder. Nd-YAG pulsed laser was used at different power intensities, resulting in nanoparticles of different sizes depending on the wavelength used for processing. The characterization of the samples was performed through various techniques such as UV-Vis Absorption, Photoluminescence, Raman, XRD, TEM, and XPS.
Article
Acoustics
J. A. Fuentes-Garcia, J. Santoyo-Salzar, E. Rangel-Cortes, G. F. Goya, V Cardozo-Mata, J. A. Pescador-Rojas
Summary: The optimized synthesis of gold nanoparticles with different shapes and sizes was achieved using ultrasonic irradiation assisted Turkevich-Frens method. The effects of different ultrasound powers and continuous irradiation time were studied to control the size and shape of the GNPs colloidal solutions. The resulting quasi-spherical GNPs showed sizes ranging from 12 to 16 nm, with different shapes such as pentakis dodecahedron, triakis icosahedron, and tetrakis hexahedron.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Jose Trinidad Guillen Bonilla, Hector Guillen Bonilla, Veronica-M. Rodriguez-Betancourtt, Alex Guillen Bonilla, Antonio Casillas Zamora, Oscar Blanco Alonso, Jorge Alberto Ramirez Ortega
Summary: The propane gas detector was built using the semiconductor nickel antimonate oxide (NiSb2O6) and an analog electronic circuit to monitor atmospheres where propane gas leakage may occur. The construction process involved 5 stages, including material synthesis, sensor fabrication, and testing, demonstrating excellent functionality at low cost.
JOURNAL OF SENSORS
(2021)
Article
Materials Science, Multidisciplinary
Erwin Said Guillen-Lopez, Florentino Lopez-Urias, Emilio Munoz-Sandoval, Maykel Courel-Piedrahita, Marciano Sanchez-Tizapa, Hector Guillen-Bonilla, Veronica Maria Rodriguez-Betancourtt, Oscar Blanco-Alonso, Alex Guillen-Bonilla, Juan Pablo Moran-Lazaro
Summary: Spinel-type ZnMn2O4 nanoparticles were successfully synthesized using dodecylamine as a surfactant agent, showing good gas sensing performance to isopropanol vapor at 250 degrees C. The sensor exhibited a gas response ranging from 22% to 99%, with a theoretical detection limit estimated to be 666 ppb and a stable electrical signal. These results suggest that ZnMn2O4 can be a promising sensing material for isopropanol vapor.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Ch-Th Thomas, Ravichandran Manisekaran, Jaime Santoyo-Salazar, B. Schoefs, S. Velumani, H. Castaneda, A. Jantrania
Summary: The study developed nanocomposites like GOT and GOB to enhance the inactivation efficiency of E.coli, with OH and O-2(-) radicals responsible for ROS production in photocatalytic disinfection. Results showed that a smaller quantity of GOT achieved highly efficient disinfection.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Juan Carlos Camacho-Fernandez, Genesis Karendash Gonzalez-Quijano, Childerick Severac, Etienne Dague, Veronique Gigoux, Jaime Santoyo-Salazar, Adrian Martinez-Rivas
Summary: The study investigated the impact of magnetic nanoparticles interacting with HeLa cells under high frequency alternating magnetic field. It was found that these interactions modified the biomechanical behavior of the cell interfaces, particularly with Fe3O4@SiO2-NH2 MNPs incubated HeLa cells exposed to AMF showing the most significant difference in elasticity and stiffness.
Article
Cell Biology
Manuel A. Fernandez-Parrilla, David Reyes-Corona, Yazmin M. Flores-Martinez, Rasajna Nadella, Michael J. Bannon, Lourdes Escobedo, Minerva Maldonado-Berny, Jaime Santoyo-Salazar, Luis O. Soto-Rojas, Claudia Luna-Herrera, Jose Ayala-Davila, Juan A. Gonzalez-Barrios, Gonzalo Flores, Maria E. Gutierrez-Castillo, Armando J. Espadas-Alvarez, Irma A. Martinez-Davila, Porfirio Nava, Daniel Martinez-Fong
Summary: In Parkinson's disease, expressing human cerebral dopamine neurotrophic factor (hCDNF) in dopamine neurons using a neurotensin-polyplex nanoparticle system can reverse pathological features, restore behavior, and improve disease symptoms.
NEURAL REGENERATION RESEARCH
(2022)
Article
Physics, Multidisciplinary
Lucero Alejandra Esquivel-Mendez, Maria De Lourdes Albor-Aguilera, Roberto Carlos Ruiz-Ortega, Miguel Angel Gonzalez-Trujillo, Cesar Hernandez-Vasquez, Jaime Santoyo-Salazar, Miguel Tufino-Velazquez, Gabriela Rueda-Morales, Osvaldo Vigil-Galan, Gerardo Silverio Contreras-Puente
Summary: Deposition of polycrystalline CdTe thin films in large areas faces challenges of non-uniformity and pin holes. This study reports CdTe and CdS thin films with optimal physical properties for potential application in solar cells, and fabricates CdTe mini-modules for outdoor characterization.
REVISTA MEXICANA DE FISICA
(2022)
Article
Chemistry, Analytical
Lorenzo Gildo-Ortiz, Veronica-Maria Rodriguez-Betancourtt, Jorge Alberto Ramirez Ortega, Oscar Blanco-Alonso
Summary: We used a simple and cost-effective sol-gel process to synthesize ZnAl2O4 nanoparticles for potential gas sensor applications. The synthesis was conducted at lower temperatures and reaction times compared to traditional ceramic methods. The crystalline evolution, size, and surface morphology of the nanoparticles were analyzed with varying calcination temperatures. The ZnAl2O4 nanoparticles showed high sensitivity to carbon monoxide and propane gases, making them a promising candidate for gas sensing applications.
Article
Materials Science, Multidisciplinary
Carlos Alberto Rodriguez-Garcia, Oscar Blanco-Alonso, Mario Eduardo Cano-Gonzalez, Mariela Bravo-Sanchez
Summary: Barium ferrite has been modified by adding titanium ions (BaTixFe(12-x)O19, where x values are 0.00, 0.07, 0.14, 0.42, and 0.70). The synthesized samples were characterized using XRD, XPS, SEM, and thermal analysis of dielectric constant and magnetization. The majority phase observed in all samples is hexagonal barium ferrite, with the presence of Ti 2p confirmed in the titanium-substituted samples. There is a significant increase in the dielectric constant due to the addition of titanium.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Instruments & Instrumentation
A. U. Abeysekara, A. Albert, R. Alfaro, C. Alvarez, J. D. Alvarez, M. Araya, J. C. Arteaga-Velazquez, K. P. Arunbabu, D. Avila Rojas, H. A. Ayala Solares, R. Babu, A. S. Barber, A. Becerril, E. Belmont-Moreno, S. Y. BenZvi, O. Blanco, J. Braun, C. Brisbois, K. S. Caballero-Mora, J. I. Cabrera Martinez, T. Capistran, A. Carraminana, S. Casanova, M. Castillo, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, S. Coutino de Leon, E. de la Fuente, C. de Leon, T. De Young, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, M. Durocher, J. C. Diaz-Velez, R. W. Ellsworth, K. Engel, C. Espinoza, K. L. Fan, K. Fang, B. Fick, H. Fleischhack, J. L. Flores, N. Fraija, J. A. Garcia-Gonzalez, G. Garcia-Torales, F. Garfias, G. Giacinti, H. Goksu, M. M. Gonzalez, A. Gonzalez-Munoz, J. A. Goodman, J. P. Harding, E. Hernandez, S. Hernandez, J. Hinton, B. Hona, D. Huang, F. Hueyotl-Zahuantitla, C. M. Hui, T. B. Humensky, P. Huentemeyer, A. Iriarte, A. Imran, A. Jardin-Blicq, V. Joshi, S. Kaufmann, D. Kieda, G. J. Kunde, A. Lara, R. Lauer, W. H. Lee, D. Lennarz, H. Leon Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, J. Lundeen, K. Malone, V. Marandon, A. Marinelli, O. Martinez, I. Martinez-Castellanos, J. Martinez-Castro, H. Martinez-Huerta, J. A. Matthews, P. Miranda-Romagnoli, T. Montaruli, J. A. Morales-Soto, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, M. Newbold, M. U. Nisa, R. Noriega-Papaqui, T. Oceguera-Becerra, L. Olivera-Nieto, N. Omodei, A. Peisker, Y. Perez Araujo, E. G. Perez-Perez, E. Ponce, J. Pretz, C. D. Rho, D. Rosa-Gonzalez, E. Ruiz-Velasco, H. Salazar, D. Salazar-Gallegos, F. Salesa Greus, A. Sandoval, M. Schneider, H. Schoorlemmer, J. Serna-Franco, G. Sinnis, A. J. Smith, Y. Son, K. Sparks Woodle, R. W. Springer, I. Taboada, A. Tepe, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, T. N. Ukwatta, E. Varela, M. Vargas-Magana, L. Villasenor, X. Wang, I. J. Watson, F. Werner, S. Westerhoff, E. Willox, I. Wisher, J. Wood, G. B. Yodh, D. Zaborov, A. Zepeda, H. Zhou
Summary: The High-Altitude Water Cherenkov (HAWC) observatory is a second-generation, wide field-of-view, TeV gamma-ray observatory built on the experience of the Milagro experiment. Located on the Sierra Negra volcano in Mexico, HAWC consists of 300 water Cherenkov detectors to analyze extensive air showers and study cosmic rays. The observatory is optimized to observe transient and steady emission from gamma-ray sources.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2023)
Article
Engineering, Multidisciplinary
J. I. Alvarez-Vazquez, J. Sastre-Hernandez, G. Ortega-Cervantez, R. Mendoza-Perez, J. Aguilar-Hernandez, J. Santoyo-Salazar, J. A. Del Oso
Summary: This study discusses the potential application of transparent thin films of Zinc Oxide doped with Aluminum (AZO) as a substrate for single-wall carbon nanotubes processing. The AZO thin films were deposited using radiofrequency magnetron sputtering technique at room temperature. Characterization of the AZO thin films and processed bilayers of Zinc Oxide: Aluminum/Single wall carbon nanotubes was done using various techniques. The feasibility of AZO thin films as a substrate for single wall carbon nanotubes in photovoltaics devices was analyzed based on their electrical, morphological, and optical properties.
ENGINEERING RESEARCH EXPRESS
(2023)
Article
Nanoscience & Nanotechnology
Sandra Eguia-Eguia, Lorenzo Gildo-Ortiz, Mario Perez-Gonzalez, Sergio A. Tomas, Jesus A. Arenas-Alatorre, Jaime Santoyo-Salazar
Summary: This study evaluated the orientation of magnetic domains (MDs) in magnetite/maghemite nanoparticles coated with Gadolinium chelated with diethylenetriamine pentaacetate acid (Gd-DTPA). The results showed that the structure, particle size, composition, thickness, and interface defects play important roles in MDs orientation. Addressable and rotational features could potentially be utilized for inducing hydrogen proton alignment in water for various applications.