Article
Chemistry, Multidisciplinary
Woomin Park, Seungbeom Park, Yeongjun Mun, Dongchan Lee, Kwang-Suk Jang
Summary: A thickness-controlled fabrication method for obtaining flexible, free-standing Ag2Se films with nanostructured raw materials was proposed in this study. By introducing the post-annealing process, flexible, free-standing Ag2Se films can be obtained. The flexibility and thermoelectric performance of the films were systematically investigated, and it was found that films with thicknesses of 110 μm or less exhibited excellent flexible properties.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
Sergey Belim, Ilya Tikhomirov
Summary: This article addresses the problem of modeling thin epitaxial iron films on a Cu (100) substrate by calculating the surface potential. The simulation aims to determine the film structure. It is found that the copper substrate stabilizes the fcc crystal lattice in the iron film at low temperatures, whereas bulk iron samples have a bcc crystal lattice. Furthermore, the interface effect causes additional vertical deformations in the first two layers of iron above the substrate.
Article
Materials Science, Multidisciplinary
Shota Ono, Tasuku Ito
Summary: The research investigates the dynamical stability of Lennard-Jones crystals in both 2D and 3D structures, categorizing them into four groups based on different (m, n) pairs. Instabilities of various structures are studied within analytical expressions, and the relationship between LJ crystals and elemental metals in the periodic table is discussed.
Article
Energy & Fuels
Junaid Saleem, Moghal Zubair Khalid Baig, Adriaan S. Luyt, Rana Abdul Shakoor, Atef Zekri, Gordon McKay
Summary: In this study, a free-standing thin film made from polypropylene using the spin coating technique was reported. The film had lower embodied energy and carbon footprints, higher crystallinity and strength, and potential applications in various fields.
Article
Chemistry, Multidisciplinary
Hsiao-Ping Hsu, Manjesh K. Singh, Yu Cang, Heloise Therien-Aubin, Markus Mezger, Ruediger Berger, Ingo Lieberwirth, George Fytas, Kurt Kremer
Summary: A new method for creating nanoporous polymer membranes with well defined pore diameters is introduced, which involves mechanical deformation and quenching of highly entangled polymer films. The approach is validated using polystyrene films and does not require chemical processing, supporting substrate, or self-assembly. The resulting membranes exhibit stable properties and impressive elasticity, with pore diameters on the order of ten polymer reptation tube diameters.
Article
Materials Science, Characterization & Testing
Jae-Bum Pyo, Sangmin Lee, Taek-Soo Kim
Summary: The pure swelling characteristic of nanoporous ionomer-bound carbon films under various temperature and humidity conditions was studied by obtaining free-standing films and measuring swelling strain. Macroscopic swelling behavior was observed, contrary to conventional knowledge, with electrical resistance showing significant differences depending on the ionomer content in the electrode. The study revealed a structural transition in the film between macroscopic swelling and electrical resistance.
Article
Chemistry, Multidisciplinary
Yuan Chen, Haibo Zeng, Peipei Ma, Gaoyuan Chen, Jie Jian, Xing Sun, Xiaoming Li, Haiyan Wang, Wanjian Yin, Quanxi Jia, Guifu Zou
Summary: The study successfully grew freestanding single crystal CsPbBr3 SCHPFs with thickness less than 100 nm and lateral size close to centimeter for the first time. A new growth kinetics model was proposed to address the surface energy and temperature effect on the growth rate, with experimental results and DFT calculations demonstrating the critical role of surfactants in achieving anisotropic growth.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Hanxue Sun, Wenjun Chan, Hongyu Zhang, Rui Jiao, Fei Wang, Zhaoqi Zhu, An Li
Summary: In this study, we developed antibacterial conjugated microporous polymer films through solid surface-assisted polymerization. The resulting films showed effective inhibition of bacterial growth, suggesting their potential application in water treatment and sterilization.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2024)
Article
Chemistry, Multidisciplinary
Brais Rodriguez Garcia, Manuel M. Pineiro, Martin Perez-Rodriguez
Summary: Umbrella Sampling Molecular Dynamics method was used to study the transition energies and temperature trend of different guest molecules in hydroquinone beta-clathrate nanochannels. The clathrate can selectively encapsulate various types of small gases, making it a potential candidate for gas separation and storage. Most guest gases can be accurately modeled as single Lennard-Jones spheres.
Article
Chemistry, Physical
Wenjie Yu, Yunyan Peng, Lijun Cao, Weiwei Zhao, Xiaoqing Liu
Summary: In this study, polybenzoxazine was used as a precursor to fabricate LIG via a defocused lasing process, showing excellent EMI shielding effectiveness. The rapid quench-peeling method for obtaining free-standing LIG films has enabled wider adaptability and possibilities for practical applications.
Article
Polymer Science
Jose Antonio Gonzalez-Mijangos, Enrique Lima, Roberto Guerra-Gonzalez, Fernando Iguazu Ramirez-Zavaleta, Jose Luis Rivera
Summary: The mechanical stability of nanothin free-standing films made of melted polyethylene chains was predicted through molecular dynamics simulations. The critical thickness increased with temperature and additional chains were required as the temperature rose. Within a specific temperature range, the nanothin films showed stability in terms of thickness, with the density and interfacial properties remaining independent of the film thickness. Additionally, the polyethylene layer at its critical thickness exhibited a lower melting temperature compared to bulk polyethylene.
Article
Chemistry, Physical
Kristof M. Bal, Erik C. Neyts
Summary: We calculate bubble nucleation rates in a Lennard-Jones fluid using molecular dynamics simulations and validate common modeling techniques. The results show consistent rate predictions from different methods, except for the rates derived from forward flux sampling simulations, which are outliers.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Marie Colin, Sam Chen, Hani Farhat, Katia Guerin, Marc Dubois
Summary: This study demonstrates that fluorination of graphene oxide films under mild conditions can result in highly fluorinated graphene oxide films with maintained structure and mechanical strength. The fluorinated films exhibit unique electrochemical properties in lithium batteries and can potentially be used as hydrophobic lubricant membranes.
Article
Engineering, Chemical
Yueyi Pan, Ghislain Bournival, Stoyan I. Karakashev, Bingyu Yang, Liguang Wang, Seher Ata
Summary: The growing complexity of mineralogy and environmental considerations requires mineral concentrators to maximize the synergistic effect of reagent mixtures and salts on flotation performance. This paper explores the stability of thin liquid films formed from frother solutions in the presence of a collector and an electrolyte. The study finds that adding potassium amyl xanthate (PAX) significantly improves the stability of the films, while the presence of salt decreases their stability. The film behavior is affected more by the presence and concentration of salt than by PAX.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Electrochemistry
Wei Zheng, Joseph Halim, Ahmed S. Etman, Ahmed El Ghazaly, Johanna Rosen, Michel W. Barsoum
Summary: By developing porous and highly conductive films composed of oxygen vacancy-rich MoO3-x nanobelts and delaminated Ti3C2 MXene, high volumetric capacitances were achieved in supercapacitor electrodes. Assembling asymmetric supercapacitors with MoO3-based anodes and nitrogen-doped activated carbon cathodes led to a volumetric energy density of 48.6 Wh L-1, with high charge retention after 20,000 cycles at 20 A g(-1).
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Jose L. Rivera, Luis Molina-Rodriguez, Mariana Ramos-Estrada, Pedro Navarro-Santos, Enrique Lima
Article
Chemistry, Multidisciplinary
Francisco Villanueva-Mejia, Pedro Navarro-Santos, Peter Ludwig Rodriguez-Kessler, Rafael Herrera-Bucio, Jose Luis Rivera
Article
Chemistry, Organic
Freddy G. Morales-Palacios, Pedro Navarro-Santos, Lidia Beiza-Granados, Jose L. Rivera, Hugo A. Garcia-Gutierrez, Rafael Herrera-Bucio
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
(2019)
Article
Thermodynamics
Indira Yarely Lopez-Cortes, Gustavo A. Iglesias-Silva, Mariana Ramos-Estrada, Jose Luis Rivera-Rojas
FLUID PHASE EQUILIBRIA
(2020)
Article
Polymer Science
Jose Antonio Gonzalez-Mijangos, Enrique Lima, Roberto Guerra-Gonzalez, Fernando Iguazu Ramirez-Zavaleta, Jose Luis Rivera
Summary: The mechanical stability of nanothin free-standing films made of melted polyethylene chains was predicted through molecular dynamics simulations. The critical thickness increased with temperature and additional chains were required as the temperature rose. Within a specific temperature range, the nanothin films showed stability in terms of thickness, with the density and interfacial properties remaining independent of the film thickness. Additionally, the polyethylene layer at its critical thickness exhibited a lower melting temperature compared to bulk polyethylene.
Article
Polymer Science
Fernando Iguazu Ramirez-Zavaleta, Victor Manuel Torres-Dominguez, Gonzalo Viramontes-Gamboa, Jose Luis Rivera
Summary: Molecular dynamics simulations were used to investigate the pressure forces shaping the conformation of polyethylene chains in ultra-thin free-standing layers. It was found that the chains were slightly stretched and the contributions of bond vibrations to pressure were greater than interchain interactions. The interchain interactions resulted in noncohesive interfacial regions that were independent of temperature. The predicted surface tension values were consistent with experimental results and were not dependent on layer thickness, while the real interfacial thickness was dependent on layer thickness.
Article
Biochemistry & Molecular Biology
Pablo Jahir Pena-Obeso, Rafael Huirache-Acuna, Fernando Iguazu Ramirez-Zavaleta, Jose Luis Rivera
Summary: This study investigates the stability of porous MoS2 nanotubes and compares it with macroscopic MoS2 flakes through molecular dynamics simulations. The results show that the nanotubes exhibit good stability and are influenced by factors such as the size of the area of full-covered layers, number of layers, polytype, and size of holes in the flakes.
Article
Biochemistry & Molecular Biology
Juan M. Aceves-Hernandez, Maria Ines Nicolas Vazquez, Jose Luis Garza Rivera, Angelica Espinoza Godinez, Juan Mateo Flores, Jose de Jesus Cruz Guzman, Victor M. Castano
Summary: The optimized geometry, electrostatic potential map, and molecular orbitals of palbociclib were calculated using density functional theory. Molecular docking of palbociclib-kinase complexes using the calculated geometry revealed the importance of nitrogen and oxygen atom charges in the binding. The docking results, similar to literature reports using molecular dynamics, showed the promiscuity of palbociclib with three different kinases and its potential use in other types of cancer.
CHEMISTRY & BIODIVERSITY
(2023)
Article
Engineering, Chemical
Roberto Guerra-Gonzalez, Vidal Moises Bastida-Silva, Jose Luis Rivera, Fernando Iguazu Ramirez-Zavaleta, Enrique Lima
Summary: We used molecular dynamics simulations to investigate the friction behavior of hydroxyl-passivated silica layers lubricated with n-pentanol chains. Our study focused on constant shear stress, constant normal load, and isothermal conditions. We observed different sliding regimes and proposed a sliding mechanism between the methyl groups of the n-pentanol chains. The critical ordering of hydrogen bonds between the surface hydroxyl groups and the lubricant was found to be crucial for reaching a stationary state.
Article
Linguistics
Shenika Harris, David Balmaceda, Hadis Ghaedi, Jose Luis Garrido Rivera
Summary: This feature provides an archive of articles published in other venues during the past year, serving as a valuable tool for readers of Reading in a Foreign Language (RFL). It covers any topic within the scope of RFL and second language reading, with articles listed in alphabetical order, each accompanied by a complete reference and brief summary. The editors make an effort to include all related articles from other venues, although the list may not be exhaustive.
READING IN A FOREIGN LANGUAGE
(2022)
Article
Chemistry, Multidisciplinary
Ana Yanez-Aulestia, Nishesh Kumar Gupta, Magali Hernandez, Genesis Osorio-Toribio, Eli Sanchez-Gonzalez, Ariel Guzman-Vargas, Jose L. Rivera, Ilich A. Ibarra, Enrique Lima
Summary: This review briefly highlights the recent progress of gold nanoparticles (AuNPs) in biomedicine as bio-sensors and targeted nano vehicles, emphasizing their unique properties and challenges in detection applications and controlled drug or gene delivery.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Erik Perez-Ramirez, Ivan Kaleb Torres, Ma Jesus Martinez-Ortiz, Jose L. Rivera, Carlos Felipe, Ariel Guzman, Ilich A. Ibarra, Enrique Lima
Summary: Two fluorinated gamma-Al2O3 series were synthesized using a sol-gel method and characterized using various analytical techniques. The results revealed trends in textural parameters and confirmed chemical affinity and acid surface properties through pigment experiments.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
J. Alberto Arroyo-Valdez, Gonzalo Viramontes-Gamboa, Roberto Guerra-Gonzalez, Mariana Ramos-Estrada, Enrique Lima, Jose L. Rivera
Summary: Molecular dynamics simulations show that ionic liquids containing alkylated imidazoles exhibit a bimodal distribution of cation conformations (folded/unfolded), where the concentration of folded cations increases with temperature, reducing liquid cohesivity. At the interface, an outermost layer of cations can tilt towards and cover a layer of adsorbed anions, resulting in stability in transverse directions and instability in the normal direction at temperatures around thermal instability, limiting the rate of vaporization of neutral ion pairs.
Article
Chemistry, Multidisciplinary
Jose L. Rivera, Jack F. Douglas