Article
Chemistry, Physical
R. Souissi, N. Bouguila, M. Bendahan, K. Aguir, T. Fiorido, M. Abderrabba, I Halidou, A. Labidi
Summary: The importance of detecting ozone and its impact on human health; Gas sensors based on In2S3 films prepared have high sensitivity and low detection limits; The gas sensor at a working temperature of 160 degrees Celsius exhibits good rapidity and selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
R. Jansi, M. S. Revathy, S. Vinoth, Anuj Kumar, R. S. Rimal Isaac, N. Deepa, Abdullah M. Al-Enizi, Mohd Ubaidullah, Bidhan Pandit, Mohd Shahazad, Manish Gupta
Summary: In this study, different doping concentrations of Lanthanum doped Molybdenum trioxide thin films were prepared using Nebulizer spray pyrolysis technique. The crystal structure, morphology, optical properties, and gas sensing properties of the films were investigated. The results showed that 2 wt% La doped MoO3 thin film exhibited the highest crystallite size and optimal gas sensing performance.
Article
Materials Science, Ceramics
Aiai Liu, Tao Liu, Haitao Fu, Xitao Yin, Ke Liu, Jingkun Yu
Summary: Zinc and cobalt co-doped molybdenum trioxide nanosheets were successfully prepared and showed high response to n-butylamine gas at low temperature. The doping of Zn and Co decreased the optimum operating temperature and improved the selectivity of the sensor. Multi-doping system has great potential for sensor development and application, providing a feasible method for reducing the operating temperature of the sensor.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Ramarajan Ramanathan, Selvakumar Nagarajan, Venkataramana Bonu, Priyanka Patel, Shubhangi Jamdar, Harish C. Barshilia, Ramesh Chandra Mallik
Summary: Thin film technology offers possibilities and advancements in gas sensor devices. Sb-doped nanometer thin-SnO2 films were developed for CO/NH3 gas detection. The structural, surface, optical, and resistivity properties were investigated as a function of film thickness. ATO thin films showed enhanced response towards CO/NH3 gas detection with better stability and selectivity for CO gas. The results indicate the potential application of nanometer ATO films for enhanced gas detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Yuchen Wang, Yu Xue, Changgui Xu, Qi Zhou, Ningbo Liao
Summary: In this paper, the adsorption characteristics of CO, H2O, CH4, H2S, H2, and NH3 gases on Cu-doped MnO3 are investigated using first-principles calculations. The results show that CO has the highest adsorption energy and the largest differential charge density on Cu-MoO3, indicating a strong interaction. The incorporation of CO also leads to changes in the conductivity of Cu-MoO3. Therefore, Cu-MoO3 shows high sensitivity and selectivity towards CO gas.
Article
Materials Science, Ceramics
Zhidan Song, Long Zhang, Quan Zhou, Ziang Zhang, Zhaobo Dong, Lifan Nie, Qingyi Liu, Gebo Pan
Summary: To ensure safety in using hydrogen energy, highly sensitive hydrogen sensors are needed for early detection of hydrogen leaks. In this study, a low-cost process was used to fabricate PdO-decorated NiO hydrogen sensors capable of detecting sub-ppm H2 concentration. The results show that PdO doping significantly enhances the gas response to H2.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Jamal M. Rzaij, Nadir F. Habubi
Summary: The chemiresistive gas sensing characteristics of undoped and nickel oxide-doped tin oxide gas sensors at different concentrations synthesized by a SILAR technique were investigated. The results showed that the nickel oxide dopant improved the crystal structure and grain size. The developed sensor exhibited rapid response and strong stability to CO2, with the response increasing as the concentration increased.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Ahmet Emre Kasapoglu, Saman Habashyani, Ali Baltakesmez, Demet Iskenderoglu, Emre Gur
Summary: This study successfully grew Sb-doped ZnO nanorods using a simple spray pyrolysis method, with XRD measurements indicating preferential c-axis (002) plane for all films, and no lattice distortion from Sb doping. Raman measurements showed Sb doping related modes, especially defect related, in ZnO nanorods, with excellent hydrogen gas sensor performance demonstrated by a 5.0 wt% Sb-doped ZnO nanorod sample.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Amira Ben Gouider Trabelsi, Fatemah H. Alkallas, M. Aslam Manthrammel, Mohd. Shkir, S. AlFaify
Summary: The study demonstrates the use of Co-doped MoO3 thin films as sensing materials for real-time detection and monitoring of NH3 in the environment. The Co-doping alters the crystal structure of MoO3 films and enhances the gas response of NH3 sensors.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Analytical
Ki Beom Kim, Young Kook Moon, Tae-Hyun Kim, Byeong-Hun Yu, Hua-Yao Li, Yun Chan Kang, Ji-Wook Yoon
Summary: A novel raisin bread-structured film, fabricated by mixing two different types of oxide hollow spheres, has been developed for the selective and sensitive detection of carcinogenic benzene. The film demonstrated high selectivity to less reactive benzene compared to pure SnO2 or Pd-Co3O4 hollow sphere films. This work provides a simple and rational strategy to achieve gas selectivity to chemically stable benzene and has the potential to advance the development of portable devices for monitoring airborne benzene.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Aninamol Ani, P. Poornesh, Albin Antony, Saikat Chattopadhyay
Summary: Ga-doped ZnO (GZO) nanostructures deposited via low-cost spray pyrolysis process are used for detecting low quantities of carbon monoxide gas. XRD studies confirm the single-phase wurtzite structure and structural stability of GZO-doped ZnO thin films. Raman examination and SEM images reveal the vibrational characteristics, defects, and grain structure of the films, which affect the gas sensing performance. Room temperature photoluminescence (RTPL) spectra and XPS analysis confirm oxygen vacancies as the main defects responsible for enhancing CO sensing characteristics. Sensing measurements show that 15 wt% GZO exhibits the highest sensing performance for low concentrations of CO gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Physics, Multidisciplinary
Seyyedeh Parisa Abedi, Mohammad Bagher Rahmani, Farkhondeh Rezaii
Summary: In this research, alpha-Fe2O3 (hematite) thin films were deposited on glass substrates at various growth temperatures. The morphological, structural, and optical properties of the samples were characterized. The sensing characteristics of the samples for ethanol were investigated and the growth conditions and sensing parameters of hematite thin films were optimized for ethanol sensing applications.
Article
Materials Science, Multidisciplinary
Youssef Doubi, Bouchaib Hartiti, Maryam Siadat, Herve Joel Tchognia Nkuissi, Hicham Labrim, Salah Fadili, Mounia Tahri, Philippe Thevenin, Etienne Losson
Summary: This study investigated the effects of spray time and substrate temperature on the properties of TiO2 thin layers using spray pyrolysis technique. The analysis results confirmed the formation of pure anatase phase TiO2 thin layers with semiconducting properties. The deposited TiO2 thin films showed high suitability for gas sensing applications, particularly for the detection of NO2.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
S. P. Bharath, Kasturi V. Bangera
Summary: Aluminum-doped zinc oxide (AZO) thin films with varying doping concentrations were synthesized using spray pyrolysis technique, showing significant effects on grain size, electrical properties, and gas-sensing characteristics. Various characterization techniques were adopted to study the material formation and performance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Rana Saad, Ahmed Gamal, Mohamed Zayed, Ashour M. Ahmed, Mohamed Shaban, Mohammad BinSabt, Mohamed Rabia, Hany Hamdy
Summary: Thin films of ZnO and ZnO/CNTs were prepared and used as CO2 gas sensors in this study. The ZnO/CNTs sensor showed higher sensitivity and stability to CO2 gas at high flow rates, with good selectivity compared to other gases. The prepared nanomaterials were characterized using XRD, FTIR, and UV/Vis, providing insights into their structural and optical properties.
Article
Food Science & Technology
Brenda Contreras-Jimenez, Alicia Del Real, Beatriz M. Millan-Malo, Marcela Gaytan-Martinez, Eduardo Morales-Sanchez, Mario E. Rodriguez-Garcia
JOURNAL OF THE INSTITUTE OF BREWING
(2019)
Article
Spectroscopy
Sandra M. Londono-Restrepo, Luis F. Zubieta-Otero, Rodrigo Jeronimo-Cruz, Maria Antonieta Mondragon, Mario E. Rodriguez-Garcia
JOURNAL OF RAMAN SPECTROSCOPY
(2019)
Article
Multidisciplinary Sciences
Cristian Felipe Ramirez-Gutierrez, Harol David Martinez-Hernandez, Ivan Alonso Lujan-Cabrera, Mario Enrique Rodriguez-Garcia
SCIENTIFIC REPORTS
(2019)
Article
Chemistry, Applied
Ezequiel Hernandez-Becerra, Brenda Contreras-Jimenez, Alma Vuelvas-Solorzano, Beatriz Millan-Malo, Carolina Munoz-Torres, Miguel E. Oseguera-Toledo, Mario E. Rodriguez-Garcia
Article
Biotechnology & Applied Microbiology
Posidia Pineda-Gomez, Andres Rosales-Rivera, Elsa Gutierrez-Cortez, Mario Enrique Rodriguez-Garcia
FOOD AND BIOPRODUCTS PROCESSING
(2020)
Article
Materials Science, Biomaterials
Sandra M. Londono-Restrepo, Beatriz M. Millan-Malo, Alicia del Real-Lopez, Mario E. Rodriguez-Garcia
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2019)
Article
Veterinary Sciences
Ezequiel Hernandez-Becerra, Sandra M. Londono-Restrepo, Margarita Hernandez-Urbiola, Daniel Jimenez-Mendoza, Ma de los Angeles Aguilera-Barreiro, Esther Perez-Torrero, Mario E. Rodriguez-Garcia
Summary: Changes in bone mineral content in Wistar rats were directly related to sex and age, with calcium content highest in male rats and phosphorous content remaining constant throughout the experiment. The calcium to phosphorous ratio was significantly higher in male rats compared to females, while bone mineral density did not follow the same trend.
LABORATORY ANIMALS
(2021)
Article
Chemistry, Applied
Victor D. Quintero-Castano, Francisco J. Castellanos-Galeano, Cristina I. Alvarez-Barreto, Juan C. Lucas-Aguirre, Luis A. Bello-Perez, Mario E. Rodriguez-Garcia
Article
Environmental Sciences
Jose F. Vasco-Leal, M. Liceth Cuellar-Nunez, Ivan Luzardo-Ocampo, Eusebio Ventura-Ramos Jr, G. Loarca-Pina, M. E. Rodriguez-Garcia
Summary: This study characterized the physicochemical and nutraceutical composition of two Mexican R. communis L. leaves accessions, revealing high protein and mineral content, as well as significant antioxidant potential.
WASTE AND BIOMASS VALORIZATION
(2021)
Article
Chemistry, Multidisciplinary
Cristian Felipe Ramirez-Gutierrez, Ivan Alonso Lujan-Cabrera, Cesar Isaza, Ely Karina Anaya Rivera, Mario Enrique Rodriguez-Garcia
Summary: Porous silicon (PSi) with branched pore geometry on p(++)-type (111) silicon substrate was fabricated through electronically etching method in hydrofluoric acid media. Optical properties were determined using a photoacoustic (PA) technique, with models compared for pore geometry determination.
Article
Engineering, Chemical
Hector D. Garcia-Vazquez, Harol D. Martinez-Hernandez, Magdalena Trujillo-Barragan, Esteban Mondragon-Flores, Mario E. Rodriguez-Juarez, Beatriz M. Millan-Malo, Jhon A. Villada-Villalobos, Mario E. Rodriguez-Garcia
Summary: This research focuses on studying the use of waste car bumper samples and their processing through re-extrusion-injection. The composition of car bumpers includes crystalline phases of polypropylene (PP), talc, and amorphous ethylene propylene diene monomer (EPDM). The thermal, mechanical, and structural properties of the recycled material strongly depend on the extrusion and injection processes as well as the crystalline phases formed during heating. Removing micro paint particles from the recycled bumpers during extrusion-injection can improve the mechanical properties of recycled PP. The recycling of polypropylene-based car parts can contribute to the development of a circular economy.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Construction & Building Technology
Edgar D. Perez-Diaz, Jose L. Reyes-Araiza, Beatriz M. Millan-Malo, Sandra M. Londono-Restrepo, Mario E. Rodriguez-Garcia
Summary: This paper focuses on the pozzolanic behavior of bamboo cortex (BC), sugarcane bagasse (SB) ashes, and alunite natural pozzolan (NP). Tests show that 20% BC incinerated for 6 hours can replace Portland composite cement and produce mortars with higher mechanical behavior compared to SBA and NP.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Omar M. Gomez-Vazquez, Leon R. Bernal-Alvarez, Jesus I. Velasquez-Miranda, Mario E. Rodriguez-Garcia
Summary: This paper investigates the changes in physicochemical properties of three types of hydroxyapatite (HAp) obtained from different sources and synthesized using different methods. The results show distinct thermal transitions and coalescence phenomena at different temperatures for these samples due to their sources and mineral composition differences. Various testing methods, including thermogravimetric analysis, inductively coupled plasma, scanning electron microscopy, and transmission electron microscopy, are employed to reveal the changes in the samples.
Article
Materials Science, Multidisciplinary
Angelica M. Castillo-Paz, Sandra M. Londono-Restrepo, Cesar Ortiz-Echeverri, Rafael Ramirez-Bon, Mario E. Rodriguez-Garcia
Summary: The study analyzed the physicochemical properties of bovine trabecular bone (BTB) and found the presence of various minor ions and preferred orientation of hydroxyapatite nanocrystals in natural scaffolds. Through 3D reconstruction and density calculations, it was discovered that the areal bone mineral density of BTB is inversely related to sample porosity. The mechanical properties of the scaffolds are influenced by the crystalline structure, morphology, and distribution of hydroxyapatite nanocrystals.
Article
Engineering, Environmental
C. F. Ramirez-Gutierrez, R. Arias-Niquepa, J. J. Prias-Barragan, M. E. Rodriguez-Garcia
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
