Article
Materials Science, Ceramics
Pinki Punia, R. K. Aggarwal, Rakesh Kumar, Rakesh Dhar, Preeti Thakur, Atul Thakur
Summary: This study investigated the adsorption of heavy metals (Cd and Cr) from industrial wastewater using a series of Ca-substituted nickel zinc nanoferrites (CaxNi0.4Zn0.6-xFe2O4 (x = 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6)) (CNZNFs). The effect of calcium doping and contact time on the adsorption of cadmium and chromium ions was examined, and the prepared nanoadsorbents showed high removal efficiencies for both Cd (98.25%) and Cr (51%) ions. Structural analysis confirmed the formation of spinel structured nanoparticles with varying crystallite size and porosity depending on the calcium concentration. The adsorption data was well fitted by the pseudo second order kinetic model and Langmuir isotherm model, with high adsorption efficiencies of Cd (128.20 mg/g) and Cr (23.54 mg/g) observed. The Langmuir isotherm model showed better fitting than the Freundlich isotherm model due to higher correlation coefficients for both heavy metals.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Jingya Wang, Yiwen Chen, Zhe Chen, Javier Llorca, Xiaoqin Zeng
Summary: The effect of Ca and Zn in solid solution on the critical resolved shear stress (CRSS) of different slip systems in Mg alloys was investigated, revealing changes in plastic anisotropy and twin growth. The results showed that the addition of solute atoms increased the CRSS for basal slip and decreased the CRSS for pyramidal slip, leading to improved ductility and formability in the Mg-Ca-Zn alloys.
Article
Optics
Marc Jankowski, Carsten Langrock, Boris Desiatov, Marko Loncar, M. M. Fejer
Summary: We propose a new approach to supercontinuum generation and carrier-envelope-offset detection based on saturated second-order nonlinear interactions in dispersion-engineered nanowaveguides. The technique developed here broadens the interacting harmonics by forming stable bifurcations of the pulse envelopes due to an interplay between phase-mismatch and pump depletion. The scaling laws suggest that future realization based on this approach could enable supercontinuum generation with orders of magnitude less energy than current state-of-the-art devices.
Article
Chemistry, Physical
Mao-Yin Ran, Sheng-Hua Zhou, Bingxuan Li, Wenbo Wei, Xin-Tao Wu, Hua Lin, Qi-Long Zhu
Summary: This study successfully designed and synthesized a series of non-centrosymmetric oxychalcogenides through a simple chemical substitution strategy. These compounds not only achieved phase matchability transformation but also significantly improved the infrared non-linear optical performance. Among them, Sr2CdGe2OS6 exhibited the best comprehensive performance.
CHEMISTRY OF MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Chang Liu, Qing Wang, Bin Han, Junhua Luan, Ji-Jung Kai, Chain-Tsuan Liu, Ge Wu, Jian Lu
Summary: Dual-phase metallic glasses with nanostructured Ca-rich amorphous phases exhibit a dense corrosion layer that protects the material from further corrosion, resulting in a corrosion rate 77% lower than pure Mg.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Multidisciplinary
Yi Huang, Le Gao, HaoHai Yu, Zhihua Yang, Junjie Li, Shilie Pan
Summary: Four newly synthesized sodium-based ternary IR nonlinear optical materials exhibit different second-harmonic generation responses and laser damage thresholds, with selenides showing better SHG responses and sulfides having higher laser damage thresholds. The SHG effect and band gap in these compounds mainly originate from the distorted NaQ(4) NLO-active units with a short Na-S bond length, providing new insights for the design of novel IR NLO materials.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Vyacheslav S. Zhandun, Oksana N. Draganyuk
Summary: The magnetic and electronic properties of Co-based spinel oxides were investigated using the GGA + U approach. It was found that the Co3+ ion undergoes a spin-state transition under specific pressure, which can be controlled by thin-film form and interatomic distances.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bin Dong, Junjun Liu, Man Xue, Ziyue Ni, Yuan Guo, Zhifeng Huang, Zhen Zhang
Summary: The combination of SHG and linear dichroism, or SHG-LD, is used to study the chiroptical origin of silver chiral nanoparticles deposited by glancing angle deposition. The study reveals that the chiroptical activity of the silver CNPs is attributed to both structural chirality and one-fold anisotropy at the interface caused by substrate rotation during GLAD. This technique has great potential to provide valuable complementary information for studying the chiroptical properties of chiral metamaterials.
Article
Materials Science, Multidisciplinary
S. B. Bodrov, Yu A. Sergeev, A. Korytin, A. N. Stepanov
Summary: In this study, we investigated the second-harmonic generation of optical radiation with the assistance of intense terahertz electromagnetic pulses on the surface of high-resistivity Si(111). The experimental and theoretical analysis revealed the significant impact of the terahertz field on the generation of second-harmonic signals, especially when the polarizations of the terahertz and second-harmonic fields coincide. Furthermore, the application of the terahertz field was found to be helpful in distinguishing the mechanisms of second-harmonic generation.
Article
Chemistry, Physical
Wen Guo, Tieyi Lu, Zahra Gandhi, Zhan Chen
Summary: SFG vibrational spectroscopy is a powerful technique for elucidating molecular structures of peptides/proteins at interfaces, and has been successfully applied in various studies. Combined with other analytical techniques and computational simulations, it provides a more comprehensive understanding of the structure-function relationships of interfacial peptides/proteins.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Yi-min Ding, Xiaomin Nie, Youyong Li
Summary: The study investigates the linear and nonlinear optical spectra of metal monoxide monolayers, finding that CdO has the largest SHG coefficient and the smallest bandgap. A linear relationship is discovered between SHG coefficient and Qd/E-opt, providing a descriptor for new two-dimensional nonlinear materials.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Chemistry, Physical
Ruipeng Bai, Yuan Lin, Yuan Guo, Zhen Zhang
Summary: The interfacial structure of a super-concentration LiNO3 aqueous electrolyte was studied using non-resonant second harmonic generation (SHG) and heterodyne-detected SHG spectra. The increase in LiNO3 concentration led to the thickening of the interfacial water molecular layer, resulting in an expanded electrochemical stability window.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Elzbieta Radzyminska-Lenarcik, Sylwia Kwiatkowska-Marks, Artur Kosciuszko
Summary: The study characterized cellulose triacetate membranes using non-contact atomic force microscopy and discussed the influence of membrane morphology on the transport process. By utilizing 1-alkyl-triazole as carriers, successful facilitated transport of Zn(II), Cd(II), and Pb(II) ions was achieved.
Article
Chemistry, Physical
Arif Hussain, Asad Muhammad Khan
Summary: This study investigates the electrochemical properties of sodium dodecyl sulphate (SDS) in the presence of essential amino acid (AA) ions at the electrode-electrolyte (E-E) interface using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results show that AA ions strongly affect the electrochemical properties of SDS, including the faradaic process of electroactive ions, their kinetics, and the charge storage performance of the electrified surface. This study contributes to the understanding of the electrochemical interaction of biomolecular ions at the surfactant-assisted E-E interface.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Baosheng Li, Ming Zheng, Tingting Wang, Qiuyue Zheng, Ruibai Ma, Zoltan Major, Xianfa Zhang, Lihua Huo, Shan Gao, Xin Zhou, Xiaoli Cheng, Yingming Xu
Summary: Interface engineering is an effective strategy to enhance the performance of functional materials, but the poor charge transfer efficiency of the heterogeneous interface limits the gas sensor's performance. This study develops Fe2O3/AFe(2)O(4) (A = Cd, Ca, Zn) array material as an integrated gas sensor to selectively identify single or mixed VOC gases. The establishment of the built-in electric field promotes electron redistribution and charge transfer at the active interface, enhancing the response to VOC gases.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)