Article
Chemistry, Inorganic & Nuclear
Sikander Azam, Banat Gul, Nargis Ali, Khalil Ahmad, Rashid Khan, H. H. Hegazy, Wilayat Khan, Sikandar Aftab, Altaf Ur Rahman
Summary: This study investigated the electrical and optical properties of Ba2MLnSe5 (M = Ga, In; Ln = Y, Nd, Sm, Gd, Dy, Er) using density functional theory and WIEN2k code. The compound was found to exhibit semiconducting nature and covalent character. Optical properties, such as dielectric function, optical conductivity, refractive index, and absorption coefficient, were predicted. The compound showed minimal reflection and maximal absorption in the infrared to visible light range, making it suitable for applications in remote sensing and surgical equipment.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Kaiming Zhu, Zhanglin Chen, Hui Liu, Xin Yi, Yihuan Wang, Junjie Chen, Xuanyi Yuan, Guanghua Liu
Summary: A series of CaAlSiN3:Ln (Ln=Eu, Ce, Dy, Pr, Tb, Gd, Sm, Tm, Nd) phosphors were successfully prepared by combustion synthesis, and their polychromatic visible afterglow emissions were observed. CaAlSiN3:Eu2+ and CaAlSiN3:Ce3+ showed the best red and yellow long persistent luminescence with persistent times of 4980 s and 4860 s, respectively. Eu2+, Ce3+ co-doped CaAlSiN3 exhibited enhanced red long persistent luminescence with a persistent time of 6300 s, attributed to a more appropriate trap depth distribution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Hanjie Wang, Shujing Liu, Liuyi Wei, Gang Deng, Haohao Zhu, Sihuai Chen, Jun Yuan, Lihui Jia
Summary: Three hexanuclear heterometallic complexes have been synthesized and characterized. Two of them show single-molecule magnetic behaviors. The magnetic properties and structures of these complexes have been studied through magnetic susceptibility measurements and X-ray diffraction analysis.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Inorganic & Nuclear
Gopabandhu Panigrahi, Subhendu Jana, Mohd Ishtiyak, S. Narayanswamy, Pinaki P. Bhattacharjee, K. V. Ramanujachary, Manish K. Niranjan, Jai Prakash
Summary: Three new isostructural quaternary tellurides, Ba(2)Ln(1-x)Mn(2)Te(5) (Ln = Pr, Gd, and Yb), were synthesized by the molten-flux method at 1273 K, and they crystallize in the monoclinic crystal system with partially filled Ln sites. These structures do not contain any homoatomic or metallic bonding.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Tatiana A. . Pomelova, Charlene Delacotte, Natalia Kuratieva, Pierric Lemoine, Stephane Cordier, SangJun Park, Thierry Guizouarn, Vincent Pelletier, Regis Gautier, Nikolay G. Naumov
Summary: This work presents the synthesis, crystal and electronic structures, and magnetic properties of new quaternary sulfides Cs2Ln3CuS8 (Ln = La-Nd, Sm-Tb). These sulfides are prepared using a reactive flux method and exhibit a new type of structure (C2/m space group) with a layer-like crystal structure. The Cs2Gd3CuS8 compound shows significant magnetic refrigerating properties with a mass entropy change (-Delta SM) of 19.5 J kg-1 K-1 at 3.5 K and Delta H = 5 T.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Daniel Podgornii, Francoise M. Amombo Noa, Jan van Leusen, Christine J. McKenzie, Lars Ohrstrom, Paul Koegerler, Svetlana G. Baca
Summary: A new series of heterometallic wheels were synthesized and characterized. These wheels consist of trinuclear mu(3)-oxo-linked or hexanuclear mu-OH-linked Fe(III) pivalate clusters and rare earth nitrates. The magnetic studies revealed antiferromagnetic exchange interactions within the Fe-3 trimeric unit, as well as ferromagnetic exchange interactions between the Fe(III) and Ln(III) centers when diamagnetic Y(III) is substituted by paramagnetic Ln(III).
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Blanka Kubikova, Jarmila Mlynarikova, Oksana Matselko, Eva Miksikova, Zuzana Netriova, Zuzana Vaskova, Miroslav Boca
Summary: Phase equilibria and density of molten systems (LiF-MgF2)(eut)-LnF(3) (Ln = Sm, Gd, Nd) were investigated using thermal analysis and X-ray powder diffraction. The study revealed an increasing concentration dependency in density and molar volume for the investigated molten systems.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Yu S. Orlov, S. N. Vereshchagin, L. A. Solovyov, A. A. Borus, M. N. Volochaev, A. V. Nikitin, M. V. Bushinsky, R. A. Lanovsky, G. S. Rymski, V. A. Dudnikov
Summary: This study demonstrates the effect of mechanochemical activation on the microstructure, morphology, and thermoelectric parameters of Sr1-xLnxTiO3-8 (Ln = Nd, Gd, Dy; x = 0.05, 0.075, 0.1) solid solutions, leading to an increase in the power factor. The results show that different sizes of initial particles cause morphological and microstructural differences, significantly affecting the stability and thermoelectric properties of the synthesized samples. Decreasing the initial particle size enhances the thermal stability of the samples, resulting in increased electrical conductivity and power factor with minor variation in the Seebeck coefficient.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Multidisciplinary
Joana M. F. Barros, Glauber J. T. Fernandes, Marcio D. S. Araujo, Dulce M. A. Melo, Amanda D. Gondim, Valter J. J. Fernandes Jr, Antonio S. Araujo
Summary: Nanostructured lanthanide-silica materials of the Ln-SiO2 type were synthesized by hydrothermal method using cetyltrimethylammonium as a template. The materials were characterized and their properties were found to be influenced by the incorporation of lanthanides. The stability of the materials at high temperatures demonstrated their potential for adsorption and catalysis applications.
Article
Chemistry, Inorganic & Nuclear
Zoran Mazej, Evgeny Goreshnik
Summary: In this study, under specific conditions, different compositions of Ln(XeF2) and Ln(XeF2)3 salts can be prepared by using LnF(3) and XeF2 with different molar ratios, along with a specific synthetic approach. The structure of the La atom is influenced by the molar ratio and temperature, leading to changes in the crystal structure.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Aleksandr Sotnikov, Mikhail M. Syrokvashin, Vladimir V. Bakovets, Irina Yu Filatova, Evgeniy Korotaev, Alibek Sh Agazhanov, Dmitrii A. Samoshkin
Summary: It was found that Yb3+ ions in gamma-Ln(0.8)Yb(0.2)S(1.5-)(y) act as promoters of higher crystallite nucleation rate, leading to low thermal conductivity and optimal thermoelectric performance.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Zeshan Zada, Abdul Ahad Khan, Ali H. Reshak, Muhammad Ismail, Sabeen Zada, G. Murtaza, Muhammad Saqib, Muhammad M. Ramli, J. Bila
Summary: The study discusses the cationic variation of LnAl(2)Si(2) compounds using density functional theory, finding that the ferromagnetic phase is more stable and acceptable compared to the nonmagnetic phase. The band structures and density of state show metallic properties, with strong metallic behavior observed in all ferromagnetic compounds.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Multidisciplinary
G. K. Kiran
Summary: This work demonstrated the cathodic electrodeposition technique as a cost-effective method for fabricating perovskite chromite coatings. The amorphous precursor hydroxide coatings were heat treated to obtain MCrO3 perovskite oxide coatings, showing different morphologies with varying M in MCrO3 (M = La, Pr, Nd, Gd, Dy and Y).
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Ceramics
Ilker Cetin Keskin
Summary: Dy3+, Nd3+, Sm3+ doped Y2O3 nanophosphors were synthesized using the sol-gel method. The structural and optical changes of the doped nanophosphors were compared using XRD and SEM techniques. Radioluminescence and thermoluminescence behaviors were also studied. The study provides insights into the properties and potential applications of these nanophosphors.
CERAMICS INTERNATIONAL
(2022)
Article
Crystallography
Zuzanna Ryzynska, Madalynn Marshall, Weiwei Xie, Tomasz Klimczuk, Michal J. Winiarski
Summary: Single crystals of RE3Ni5Al19 series (RE = Y, Nd, Sm, Gd, Tb, Dy, Ho, and Er) were grown using the Al self-flux method. The crystal structure was examined using both single crystal and powder X-ray diffraction. Physical properties of RE3Ni5Al19 (RE = Y, Nd, Gd, Tb, Dy, Ho, and Er) were studied for the first time through magnetic susceptibility, electrical resistivity, and heat capacity measurements, revealing complex magnetic behaviors.
CRYSTAL RESEARCH AND TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Wenhao Liu, Ming-Hsien Lee, Ruixin Guo, Jiyong Yao
Summary: A noncentrosymmetric alkali metal borophosphate crystal material, KNBPO, has been obtained through spontaneous crystallization. It has a short UV cut-off edge, congruent melting characteristic, good thermal stability, and a moderate second harmonic generation response. The optical properties mainly originate from BO4 and PO4 units.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohammed Jomaa, Vidyanshu Mishra, Dundappa Mumbaraddi, Ritobroto Sikdar, Diganta Sarkar, Mengran Sun, Jiyong Yao, Vladimir K. Michaelis, Arthur Mar
Summary: Complete substitution of Li atoms for Ag atoms was achieved in AgGaSe2 and AgInSe2, resulting in solid solutions LixAg1-xGaSe2 and LixAg1-xInSe2. The crystal structures were determined using single-crystal X-ray diffraction and Li-7 nuclear magnetic resonance spectroscopy, confirming unique sites for Li atoms. The structure of LixAg1-xGaSe2 retained the tetragonal CuFeS2-type structure, while LixAg1-xInSe2 transformed from tetragonal to orthorhombic as Li content increased. The optical band gaps increased gradually with higher Li content, enabling control to desired values.
INORGANIC CHEMISTRY
(2023)
Review
Oncology
Xu Feng, Guo-Ying Feng, Jie Tao, Yu-Pei Ao, Xin-Hua Wu, Shi-Guai Qi, Zheng-Rong Shi
Summary: In this network meta-analysis, we found that postoperative adjuvant local therapies and molecular targeted therapies significantly improved overall survival (OS) and disease-free survival (DFS) in hepatocellular carcinoma (HCC) patients with a high risk of recurrence after radical resection. Specifically, postoperative adjuvant radiotherapy showed the best efficacy in terms of DFS, while molecular targeted therapy demonstrated the best efficacy in terms of OS.
JOURNAL OF CANCER RESEARCH AND CLINICAL ONCOLOGY
(2023)
Article
Optics
Qiongqiong Gu, Fangjie Wang, Yulei Huang, Hao Zhou, Guoliang Deng, Shouhuan Zhou
Summary: A dual-band tunable filter with a 10.5 nm narrowband based on guided-mode resonance grating is demonstrated, which can switch between two filtering working bands around 1200 and 1550 nm by controlling the TE and TM polarization. The Q factor as high as 146.7 at 1550 nm is achieved by optimizing the grating parameters. An asymmetrical line shape is obtained at TE polarization. Additionally, the angle-dependent guided-mode resonance (GMR) effect is well studied in the designed GMR grating filter, showing tunability and optical bistability based on the thermo-optic effect.
JOURNAL OF MODERN OPTICS
(2023)
Article
Chemistry, Analytical
Shijie Zheng, Mengyu Ren, Xin Luo, Hangyu Zhang, Guoying Feng
Summary: An interferometric fiber-optic gyroscope (IFOG) demodulates a rotation signal via interferometric light intensity. This paper studied the effects of SLD power fluctuation on the performance of a gyro system and established a real-time power-sensing and -compensating system using a light-power feedback loop.
Article
Optics
Sikun Zhou, Junjie Yang, Sha Wang, Shutong Wang, Guoliang Deng, Shouhuan Zhou
Summary: In this study, antireflection microstructures (ARMs) were fabricated on ZnSe surfaces using femtosecond Bessel direct laser writing in burst mode. The morphology and transmittance performance of ARMs with different parameters were investigated. The results showed that tetragonally arranged ARMs fabricated by 500 nJ of single-pulse energy, the burst 3 mode, and a period of 3 μm exhibited the best transmittance performance.
Article
Optics
Shijie Zheng, Mengyu Ren, Xin Luo, Hangyu Zhang, Guoying Feng
Summary: In the interferometric fiber-optic gyroscope (IFOG), the stability of the light source is crucial to its performance. Fluctuations in the light source power (LSP) significantly compromise the gyroscope's bias stability. Simplifying the light source is important for miniaturization and cost reduction, but it leads to LSP fluctuations. Therefore, compensating for LSP fluctuations is important. This paper proposes a novel closed-loop control method to effectively reduce the impact of LSP fluctuations by about 95%.
JOURNAL OF RUSSIAN LASER RESEARCH
(2023)
Article
Chemistry, Applied
Zhilu Wang, Guoying Feng, Shaopin Li, Man Xu, Cunwen Wang, Yanbo Li
Summary: Polyvinylidene fluoride (PVDF) is modified in-situ using a covalent modification method with polyethyleneimine (PEI) and poly(methyl vinyl ether-alt-maleic anhydride) (PEOSMA) to improve its wettability and antifouling performance. The modified PVDF membranes show super hydrophilicity and extremely low protein adsorption capacity. They have a high pure water recovery rate and good rejection rate of BSA. This study provides a potential solution for large-scale applications of PVDF membranes.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Analytical
Shijie Zheng, Mengyu Ren, Xin Luo, Hangyu Zhang, Guoying Feng
Summary: The performance of an interferometric fiber-optic gyroscope is affected by fluctuations in the light source power. Two compensation methods, double period modulation (DPM) and triple period modulation (TPM), are introduced to compensate for the gyroscope error. DPM has better performance but higher circuit requirements, while TPM is more suitable for small fiber-coil applications. Experimental results show that both DPM and TPM can achieve significant improvement in bias stability.
Article
Materials Science, Multidisciplinary
Honghong Yao, Yuqin Zhang, Shi He, Hao Zuo, Guoying Feng
Summary: This study investigated the crystal structure, electronic properties, optical properties, and photocatalytic activity of Al-doped, C-doped, and Al-C co-doped rutile TiO2 systems using first-principles density functional theory calculations. The results showed that doping altered the local density and electronic properties of rutile TiO2, improving its optical absorption capacity and extending its response range to visible light. This work provides insights into the differences in photocatalytic activity among Al-doped, C-doped, and Al-C co-doped rutile TiO2 and offers a new direction for the study of metal and non-metal-doped rutile TiO2.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Mengran Sun, Chunxiao Li, Jinlong Shi, Ming-Hsien Lee, Jiyong Yao
Summary: This study investigates the structural characteristics and nonlinear optical (NLO) properties of defect diamond-like (DL) MGa2Te4 (M = Zn, Cd) for the first time. The results show that MGa2Te4 (M = Zn, Cd) has moderate band gaps, strong second harmonic generation (SHG) intensities, and congruent-melting behavior. The lone-pair packets of Te ions in [GaTe4] units are found to be the main source of SHG responses. This work demonstrates the potential applications of these two defect DL tellurides in the mid- and far-infrared (MFIR) NLO field.
MATERIALS TODAY PHYSICS
(2023)
Article
Optics
Sheng Zhao, Shaoqian Wang, Baoshan Gu, Congliao Yan, Sha Wang, Guoliang Deng, Shouhuan Zhou
Summary: We present a simple and compact all-fiber structure for generating tunable fiber modes, including LP01, LP11, and OAM modes. By offset splicing a single-mode fiber (SMF) and a multi-mode fiber (MMF), the LP01 mode in the SMF can be excited into the LP11 mode in the MMF. A polarization controller (PC) is utilized to control the incident angle of the LP11 mode from the MMF into a polarization-maintaining fiber (PMF). In the experiment, the LP11 mode and OAM (+1)/OAM (-1) mode can be generated at specific incident angles (45 degrees /135 degrees). Additionally, the designed laser has been utilized for detecting the bending degrees of the fiber, showing good linearity in the changes of the two lobes' strengths of the output LP11 mode within the range of bending diameters from 15 to 35 mm.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Mochou Yang, Guoying Feng
Summary: Applying convolutional neural network to ghost imaging can improve the image quality of computational ghost imaging (CGI) and form network ghost imaging (netGI). Training set is generated by using images reconstructed by CGI and the original images, with the sampling rate of CGI as the sampling rate of netGI. Matching the sampling rate of netGI with that of CGI significantly improves the image quality, increasing PSNR by 109.7% and SSIM by 300% under low sampling rate gamma = 0.1. This method effectively solves the problem of reconstructing high-quality images under low sampling rate and has wide application prospects in low-dose detection, especially in biomedical detection.
JOURNAL OF RUSSIAN LASER RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Wenhao Liu, Ming-Hsien Lee, Ruixin Guo, Jiyong Yao
Summary: Rare earth borates, including Rb7SrSc2B15O30 (I) and Rb7CaSc2B15O30 (II), have attracted attention as potential nonlinear optical materials due to their short UV cutoff edges and second-harmonic generation efficiency. The B5O10 group and ScO6 octahedron are speculated to contribute to their band gap and NLO characteristics. The discovery of I and II adds to the diversity of rare earth borates.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Electrical & Electronic
Siao Cai, Ji Cui, Wei Li, Guoying Feng
Summary: This study proposes a flexible and efficient error correction algorithm based on machine learning, which can correct the system's nonlinear error without parameter calibration or prior system information. The algorithm consists of two stages: projector gamma estimation and phase error compensation. Experimental and simulation results show the effectiveness of this method in directly identifying the system's gamma value from the wrapped phase without complex calibration or prior information. The proposed algorithm is applicable to time-varying nonlinear systems.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
