Article
Materials Science, Multidisciplinary
Asma Tadji, Abdelkader Abderrahmane, Mokhtar Zerdali, Saad Hamzaoui
Summary: In this study, ZnO nanostructures were synthesized using different zinc precursors, and characterized by X-ray diffraction analysis. It was found that the precursor's anion and hydrothermal time had a significant influence on the lattice parameters and morphology. The correlation between the morphology and optical properties of ZnO nanostructures was determined through SEM image observation and spectral analysis.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Changdian Li, Lili Zhu, Ziqiang Wu, Qian Chen, Ruobing Zheng, Jie Huan, Yanan Huang, Xuebin Zhu, Yuping Sun
Summary: In this study, a feasible method is reported to fabricate ambient-stable MoS2 with high concentration 1T phase through magnetic free energy synergistic microstrain induced by W doping under low magnetic field. The catalyst prepared under a magnetic field of 3 T delivers an overpotential of 195 mV at a current density of 10 mA cm(-2) and has a long-term stability over 50 h.
Article
Chemistry, Physical
Jagannadh V. S. N. Sripada, Dulal C. Saha, Gobinda C. Saha, Hamid Jahed
Summary: This research work focuses on the synthesis of high-strength nanostructured cermet particles using a high-energy mechanical alloying method based on Al6061-graphene composite system. By optimizing the milling process parameters, the study achieved good conformance between experimental results and analytical estimates, ultimately producing feedstock suitable for cold spray deposition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Environmental Sciences
Marwa Akkari, Afrah Bardaoui, Mohamed Amine Djebbi, Abdesslem Ben Haj Amara, Radhouane Chtourou
Summary: This study focused on the development and characterization of Ag-ZnO/sepiolite photocatalysts. The results showed that the Ag-ZnO/sepiolite photocatalysts prepared by a simple hydrothermal route exhibited enhanced photocatalytic activity, with the sample doped with 5% Ag showing the best performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Chemistry, Multidisciplinary
Murtaza Bohra, Vidya Alman, Remi Arras
Summary: Zn-ferrites are nonconventional ceramic materials known for their unique chemical and thermal stability, as well as the reduced toxicity of zinc compared to other metals. The remarkable cation inversion behavior in nanostructured ZnFe2O4 is extensively used in various applications.
Article
Plant Sciences
Aamir Niaz, Ahmad Adnan, Rashida Bashir, Muhammad Waseem Mumtaz, Syed Ali Raza, Umer Rashid, Chin Ping Tan, Tai Boon Tan
Summary: The ethyl acetate fraction of Tamarix dioica extract showed strong antioxidant activity and anti-diabetic potential, possibly due to the presence of metabolites such as quercetin and catechin. This study confirmed the ethnopharmacological use of T. dioica in managing diabetes mellitus and suggested a natural approach for anti-hyperglycemia.
Article
Materials Science, Multidisciplinary
Lijun Cao, Chao Hou, Fawei Tang, Tielong Han, Xintao Huang, Yurong Li, Gaochao Wu, Chao Liu, Shuhua Liang, Junhua Luan, Zengbao Jiao, Zuoren Nie, Xiaoyan Song
Summary: Nanostructured W-Cu-Cr composites with exceptionally high hardness were fabricated in this study, showing nonmonotonic variation of wear resistance with hardness. The appropriate content of Cr facilitated the formation of a stable protective film, leading to higher microhardness at the worn surface and reduced wear rate. Excessive addition of Cr, however, may deteriorate wear resistance despite higher hardness.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Raya El Beainou, Jean-Marc Cote, Valerie Potin, Nicolas Martin
Summary: Janus-like W-Cu films with a tilted columnar architecture are prepared using GLAD co-sputtering, showing contrasting morphologies in column growth when facing W or Cu targets. SEM observations reveal a granular and rough aspect on the side receiving Cu atoms, while dense columns with a saw-tooth profile are formed in front of the W flux. High resolution TEM analysis supports these distinct morphologies, discussing growth mechanisms and occurrence of diverse crystallographic phases in the column cross-section.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Noelia Losada-Garcia, Angela Vazquez-Calvo, David Ortega-Alarcon, Olga Abian, Adrian Velazquez-Campoy, Pilar Domingo-Calap, Antonio Alcami, Jose M. Palomo
Summary: Respiratory pathogens are the leading cause of death from infectious diseases globally. Researchers have developed a nanostructured material made of small copper nanoparticles that have shown significant inhibition capacity against SARS-CoV-2 and other viruses. In laboratory tests, the material achieved a 99% reduction in the human coronavirus and demonstrated high efficiency against SARS-CoV-2 and other non-enveloped viruses. The material also exhibited an excellent inhibitory effect against bacteriophages.
Article
Food Science & Technology
Hye-Yoon Yi, Ji-Yeon Chun
Summary: This study aimed to determine the optimal conditions for Sargassum horneri extracts loaded nanostructured lipid carriers (SHE-NLCs). Physicochemical analyses, sugar and phenolic contents, and antioxidants were observed while storing the SHE-NLCs at different addition amounts and temperatures. The study found that SHE-NLCs stored at 25 degrees C exhibited small diameter and high encapsulation efficiency. Moreover, a lower temperature prevented the decrease in phenolic content and antioxidant activity during storage.
Article
Biochemistry & Molecular Biology
Cecep Suhandi, Gofarana Wilar, Ronny Lesmana, Felix Zulhendri, Ine Suharyani, Nurhasni Hasan, Nasrul Wathoni
Summary: In this study, a propolis-based nanostructured lipid carrier (NLC) system was developed to enhance the delivery of alpha-mangostin. The results showed that the incorporation of alpha-mangostin into the propolis-based NLC system significantly increased its solubility and antioxidant activity. Therefore, the modification of the delivery system with propolis-based NLC overcomes the challenges of alpha-mangostin and improves its antioxidant effectiveness.
Article
Materials Science, Coatings & Films
L. Marot, J. Fleury, D. Haas, S. Iyyakkunnel, F. Sanchez, R. Steiner, D. Mathys, R. Antunes, E. Meyer
Summary: Surface nanostructuring allows the fabrication of materials with desirable properties, and nanostructured tungsten surfaces have potential applications in solar water splitting. This study used X-ray and ultraviolet photoelectron spectroscopy to examine the chemical state of nanostructured tungsten foam-like surfaces and found that helium ions can effectively increase the work function.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Kyohei Kakuyama, Kotaro Hirose, Masahiro Adachi, Tsunehiro Takeuchi, Masafumi Kimata
Summary: In this paper, the characteristics of a thermopile infrared sensor using a nanostructured Si-Ge thermoelectric material are reported. Improving the sensitivity of the thermopile infrared sensor has been a challenge despite its ability to operate without power consumption. To enhance sensitivity, a nanostructured Si-Ge thermoelectric material with low thermal conductivity (0.8 W/m K or less) was created by heat treatment of amorphous Si-Ge to form nanocrystals. The thermopile infrared sensor composed of this material exhibited a high sensitivity of 1200 V/W at a pressure of 1.0 x 10(-1) Pa or less.
Article
Nanoscience & Nanotechnology
Yaser Rehman, Alexander Morlando, Marcela Chaki Borras, Ronald Sluyter, Xiaolin Wang, Xu-Feng Huang, Konstantin Konstantinov
Summary: This study developed a strained and defect-rich lanthanum oxide nanostructure using a spray precipitation method, demonstrating its potential in scavenging free radicals. Through a series of experiments, the nanostructured La2O3 was shown to have superior photocatalytic activity and antioxidant properties, suitable for biomedical applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Chemical
Mihaela Mirela Bratu, Semaghiul Birghila, Antoanela Popescu, Bogdan-Stefan Negreanu-Pirjol, Marius Radu, Corina Birghila
Summary: The study found considerable variations in total polyphenol content, individual phenolic contents, and antioxidant activity among 10 commercial lager beer brands produced in Romania. Statistical analysis indicated significant differences in antioxidant activity levels detected using different methods and across different packaging materials.
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)
