Article
Materials Science, Multidisciplinary
Marta Agati, Simona Boninelli, Ahmad Hamdan
Summary: This paper describes the growth mechanism leading to the selective synthesis of 2D-like CuO nanoparticle agglomerates via pulsed electrical discharges in water. By adjusting the voltage and pulse width, the size, shape and crystal properties of CuO nanoparticles can be finely tuned. The agglomeration of CuO nanoparticles is mainly due to the pressure gradients existing within the plasma formed by the discharge.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Ya-nan Wang, Jian Gan, De-ming Wang, Hai-hui Xin, Yun-fei Zhu
Summary: The surface fluorination of polyimide films resulted in surface cracking, increased surface wettability, and enhanced surface conductivity and polarity. The increase in surface cracks and enhanced polarity and conductivity were mainly attributed to the increase in chain scission with increasing fluorination time.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Hao-Chin Huang, Kai-Yuan Hsiao, Yu-Han Tseng, Yan-De Chen, Ming-Yen Lu
Summary: In this study, an in situ transmission electron microscopy (TEM) heating system was used to investigate the morphological changes of cubic Ag nanoparticles (NPs) and Ag-based core-shell structures induced by sublimation, as well as the influence of shell coverage on thermal stability. It was found that large Ag NPs (>50 nm) showed a three-stage sublimation-induced morphological change, while small Ag NPs (<30 nm) showed a uniform sublimation. The sublimation process of core-shell NPs started at stage II, and the thermal stability was enhanced by carbon shell passivation.
Article
Physics, Applied
Subham Kumar Saha, Pritha Mondal, Navyashree Vasudeva, Rekha Mahadevu, Dev Kumar Thapa, Biswajit Bhattacharyya, Anand Sharma, Saurav Islam, Phanibhusan Singha Mahapatra, T. Phanindra Sai, Samartha A. Channagiri, Pavithra Bellare, Awadhesh Narayan, N. Ravishankar, Satish Patil, Arindam Ghosh, Anshu Pandey
Summary: In this article, the preparation methods and structural analysis of Au-Ag nanostructures are reviewed. The electrical and magnetic transitions in these materials are discussed, as well as the properties revealed from optical and electron microscopic probes.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Sung Bo Lee, Seung Jo Yoo, Jinwook Jung, Heung Nam Han
Summary: This study used electron-beam irradiation to observe surface structural transitions on thin Au (1 0 0) and (1 1 0) specimens at different current densities. It was found that at low current densities, nanometer polygonal holes were formed with atomically sharp facets on both surfaces, while at higher current densities, the holes became filled and some facet surfaces were roughened.
Article
Chemistry, Multidisciplinary
Sarah M. Rehn, Theodor M. Gerrard-Anderson, Yu Chen, Peng Wang, Timothy Robertson, Thomas P. Senftle, Matthew R. Jones
Summary: Inorganic nanomaterials can be influenced by organic surface chemistry, which can modulate the mechanical strength of silver nanoplates. A continuum-based core-shell model reveals that the interior of the nanoplate retains bulk-like properties, while the surface shell has yield strength values determined by surface chemistry. Electron diffraction experiments show lattice expansion and disordering of atoms at the nanoplate surface, which are directly related to the coordinating strength of the surface ligands.
Article
Chemistry, Multidisciplinary
Sarah M. Rehn, Theodor M. Gerrard-Anderson, Yu Chen, Peng Wang, Timothy Robertson, Thomas P. Senftle, Matthew R. Jones
Summary: The influence of organic surface chemistry on the properties and mechanical behavior of inorganic nanomaterials is not well understood. This study demonstrates that the mechanical strength of a silver nanoplate can be controlled by the binding enthalpy of its surface ligands. The results show a size-dependent coupling between chemistry and mechanics at the nanoscale, with surface ligands affecting the plastic deformation and global mechanical strength of the nanoplate.
Article
Engineering, Manufacturing
Jiabing Cai, Yunqing He, Youquan Zhou, Hongbo Yu, Binghong Luo, Mingxian Liu
Summary: In this study, a freezing-tolerant hydrogel with high stretchability, strength, and ionic conductivity was successfully prepared. The hydrogel-based organic sensor exhibited excellent performance in strain monitoring. Therefore, this research holds promising potential for applications in wearable devices.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
B. D. S. Deeraj, Gejo George, N. R. Dhineshbabu, Suryasarathi Bose, Kuruvilla Joseph
Summary: This study focused on the preparation and characterization of zirconia incorporated PAN-based carbon nanofiber reinforced epoxy composites as effective EMI shielding materials. The results showed superior storage modulus and excellent EMI shielding effectiveness, especially stacking the ZrO2@CNF mats to achieve outstanding shielding effectiveness above -90 dB in the Ku band, which is significant for industrial, radar, and military applications.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Energy & Fuels
Mostafa Othman, Tian Zhang, David P. McMeekin, Sebastian O. Fuerer, Wenxin Mao, Weilun Li, Andrew D. Scully, Anthony S. R. Chesman, Philip N. H. Nakashima, Udo Bach, Joanne Etheridge
Summary: The use of guanidinium iodide (GAI) cation as an interface engineering technique in perovskite solar cells improves stability by passivating defects on surfaces and grain boundaries. However, the relationship between structural and photophysical properties is not well understood. This study demonstrates that an optimal concentration of GAI can eliminate excess PbI2, improve crystallinity, and increase grain size. Higher concentrations induce the formation of new phases and reduce crystallinity and grain size. GAI treatment also helps remove microscale heterogeneities, resulting in optimum device performance.
Article
Chemistry, Multidisciplinary
Anastasiia N. Petrova, Dmitry Y. Rasposienko, Irina G. Brodova, Liudmila A. Yolshina, Roman V. Muradymov, Artem A. Markin, Vyacheslav V. Marchenkov, Bogdan M. Fominykh
Summary: In this study, severe plastic deformation was applied to Al-Fe composites reinforced with graphene sheets using high-pressure torsion. The results revealed the dissolution of iron-containing aluminides and the formation of a submicrocrystalline structure. Furthermore, the hardness and electrical properties of the graphene composites showed differences compared to the matrix alloy.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Physical
Tripti Gupta, R. P. Chauhan
Summary: Synthesizing semiconductors at the nano level, particularly ZnSe, using solvothermal technique combined with subsequent calcination process, results in samples with varied crystallite sizes and morphologies. The choice of Zn precursors significantly impacts the characteristics of the ZnSe samples, including their particle size, morphologies, and electrical properties.
SURFACES AND INTERFACES
(2021)
Article
Dentistry, Oral Surgery & Medicine
K. Yoshihara, N. Nagaoka, A. Nakamura, T. Hara, Y. Yoshida, B. Van Meerbeek
Summary: X-ray diffraction and transmission electron microscopy confirmed the self-assembly of functional monomer 10-MDP into nano-layers at adhesive-tooth interfaces, which contribute to the mechanical strength of adhesives. Focused-ion-beam milled cross sections and scanning probe microscopy were used to observe and evaluate the 3-dimensional spreading and mechanical properties of nano-layering. The formation of self-assembled nano-layering strengthens the adhesives and may improve the clinical longevity of the bond to dentin.
JOURNAL OF DENTAL RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
C. Esther Jeyanthi, C. Karnan, A. Kistan, R. Siddheswaran
Summary: Co-doped ceria nanopowders, Ce1-xCoxO2 (x = 0.1, 0.2 and 0.3mol.%), were synthesized using citrate-nitrate auto-combustion method at 500 degrees C. The crystal structure of ceria was confirmed to be cubic fluorite by X-ray diffraction analysis. UV-Visible and FT-IR spectroscopic analyses revealed the charge transfer and functional groups in the nanoparticles. Photoluminescence spectroscopy confirmed the visible light emission due to vacancies, with different wavelengths corresponding to oxygen and cerium bands. Scanning electron microscopy and high resolution transmission electron microscopy were utilized to analyze the porosity, particles size, shape, and distribution. The presence of constituent elements and weak ferromagnetism were confirmed by energy dispersive X-ray spectroscopy and vibrating sample magnetometry, respectively.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Frank Barrows, Hanu Arava, Chun Zhou, Paul Nealey, Tamar Segal-Peretz, Yuzi Liu, Saidur Bakaul, Charudatta Phatak, Amanda Petford-Long
Summary: This study investigates the confined electron and ion transport in oxide films, showing that confinement can modify electron transport mechanisms and increase conductivity by restricting charge density. Nanoscale confinement is found to be a way to control quantum interference, as demonstrated through electron holography and impedance spectroscopy characterization.
Article
Materials Science, Multidisciplinary
A. Aly, M. Ghali, A. Osman, M. K. El Nimr
Summary: This study reports the discovery of naturally occurring luminescent graphene quantum dots (GQDs) in coconut water for the first time. The GQDs were identified through various measurements and were found to have dual sizes and emit different wavelengths of light. The GQDs were also utilized as an efficient optical sensor for aniline liquid detection.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zehua Chen, Wencheng Ma, Qinglu Fan, Yanhua Liu, Min Sun, Shuo Wang
Summary: The nanoscale e-VOPO4 materials were successfully prepared by hydrothermal synthesis and calcination, showing high purity and suitable particle size. It exhibited satisfactory electrochemical performance as cathode material for sodium ion batteries, making it a potential candidate for high energy storage systems.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Tao Liu, Yahui Liu, Le Ling, Zhongxi Sheng, Zao Yi, Zigang Zhou, Yongjia Yang, Bin Tang, Qingdong Zeng, Tangyou Sun
Summary: In this paper, a terahertz (THz) micronano device that can switch between bimodal absorption and plasmon-induced transparency (PIT) is proposed. The device consists of layers of graphene, silica, and vanadium dioxide, and has a simple structure, easy tuning, and wide-angle absorption. The device achieves perfect absorption at specific frequencies and is highly sensitive to environmental refractive index. It also has the functions of a three-frequency asynchronous optical switch and slow light effect.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Xiaobo Luo, Songhan Hu, Qiudong Duan, Dacheng Zhou, Jialin Chen, Yugeng Wen, Jianbei Qiu
Summary: The exploration of solar light absorption by a material is important in photonics and optoelectronics. This study reveals the potential of Ba3-xGa2O6:xBi3+ as a promising candidate for various photonic and optoelectronic applications, and demonstrates the use of the material in double-sided laser printing for three-dimensional optical imaging.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Hemin Wang, Yanling Hao, Lele Xiang, Xiaosi Qi, Lei Wang, Junfei Ding, Yunpeng Qu, Jing Xu, Wei Zhong
Summary: This study designed Fe3O4-FeCO3/MWCNTs/RGO MCNCs composites and fabricated large-scale samples using hydrothermal and freeze-drying methods. The microstructural investigation showed that these materials had a mixed-dimensional structure, which improved impedance matching features, polarization, and conduction loss abilities, leading to significantly enhanced electromagnetic absorption properties.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Zhenshan Yu, Hao Chen, Xuequan Chen, Yu-Sheng Lin
Summary: This study presents a silicon dielectric metamaterial (SDM) composed of two outer symmetric semi-circular rings and two inner symmetric split-ring resonators (SRRs). The electromagnetic responses of the SDM device in different modes were studied through numerical simulations and experiments. Increasing the structure height of the SDM device resulted in red-shifted resonances and stronger intensities. This study provides a new design strategy for the development of frequency filtering, polarization switching, and resonance modulation characteristics in THz-wave applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yiming Qi, Na Zhang, Meng Zong, Yangxianzi Liu, Weixing Chen
Summary: This study prepares dielectric/carbon fiber based nanocomposites wave-absorbing materials using liquid diffusion and high temperature carbonization strategies. By tuning the element type, drying mode, and filling amount, the electromagnetic parameters and absorbing properties can be adjusted. The best synthesized sample shows excellent absorbing performance, making it suitable for a wide range of electromagnetic wave absorption applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Carlos D. Gonzales-Lorenzo, T. K. Gundu Rao, Alberto A. Ccollque-Quispe, Jorge Ayala-Arenas, Monise B. Gomes, Betzabel N. Silva-Carrera, Roseli F. Gennari, Valeria S. Pachas, F. Monzon-Macedo, H. Loro, Jose F. D. Chubaci, Nilo F. Cano, Rene R. Rocca, Shigueo Watanabe
Summary: In this study, CaSiO3 doped with different ppm of Eu was synthesized using the devitrification method. Various physical properties were analyzed, revealing that the intensity and temperature of the high-temperature TL peak increased with higher dopant amounts. Fluorescence measurements indicated the presence of Eu2+ and Eu3+ ions in the samples. EPR spectra confirmed the existence of two defect centers.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Yanning Qu, Xinyang Li, Mei Cui, Renliang Huang, Wanquan Ma, Yunting Wang, Rongxin Su, Wei Qi
Summary: In this study, a new molybdenum disulfide/N,S-doped carbon quantum dots (MoS2/N,S-CQDs) heterojunction with enhanced light absorption and electrons transfer di-functional properties was constructed via a facile one-pot hydrothermal method. The heterojunction showed remarkable efficiencies in degrading methylene blue (MB) and malachite green (MG) in an actual water system under simulated sunlight irradiation. The facile synthetic technique and effective multifunctional properties of the composite have the potential for further research and industrial applications.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jiayi Wang, Penggang Ren, Xueyan Zhao, Zhengyan Chen, Yanling Jin, Zengping Zhang
Summary: In this study, a novel homojunction photocatalyst was developed by combining defective g-C3N4 and flaked g-C3N4, which showed excellent degradation performance and cycling stability, and exhibited practicality in several simulation experiments.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Jing Yan, Xiaoxiao Zhao, Weixing Chen, Panbo Liu
Summary: This research presents a self-templated strategy to prepare a spherical superstructure of carbon nanorods through material modification and pyrolysis. The resulting material exhibits a large controllable radius of curvature and shows excellent microwave absorbing properties due to its high specific surface area and mesoporous structure.
MATERIALS RESEARCH BULLETIN
(2024)
Review
Materials Science, Multidisciplinary
Qinglin Zeng, Zepeng Lv, Shaolong Li, Bin Yang, Jilin He, Jianxun Song
Summary: Liquid metal batteries possess stable safety performance, high rate performance, and thermal stability. The electrolyte, an important component of the battery, plays a significant role in achieving these remarkable performance characteristics. This paper reviews the important research progress of liquid metal batteries electrolyte and discusses the influence of different electrolyte types on energy efficiency. It also highlights the limitations and challenges of existing electrolytes and proposes key development directions for liquid metal electrolytes.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Song Wu, Junli Wang, Xuanbing Wang, Di Jiang, Jinlong Wei, Xiaoning Tong, Zhenwei Liu, Qingxiang Kong, Naixuan Zong, Ruidong Xu, Linjing Yang
Summary: In this study, a composite electrode composed of Ti/TiH2/beta-PbO2_Mn3O4@C was fabricated and investigated for zinc electrowinning. The composite electrode exhibited low overpotential, Tafel slope, icorr, and high voltage stability, outperforming most reported Ti-based PbO2 electrode materials. The excellent catalytic activity can be attributed to the low resistance and porous interlayer of TiH2 nanosheets, as well as the addition of Mn3O4@C micro-flakes to the active layer.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
E. Tsoutsoumanos, T. Karakasidis, N. Laskaris, P. G. Konstantinidis, G. S. Polymeris, G. Kitis
Summary: This study investigates the correlation between nanocrystal dimensions and thermoluminescence signal magnitude through simulations conducted in Python. Two mathematical models, OTOR and IMTS, were used to derive theoretical luminescence signals. The obtained results were compared with experimental data and a thorough comparative discussion was conducted.
MATERIALS RESEARCH BULLETIN
(2024)
Article
Materials Science, Multidisciplinary
Vishnu Aggarwal, Sudhanshu Gautam, Aditya Yadav, Rahul Kumar, Bipul Kumar Pradhan, Brajesh S. Yadav, Govind Gupta, Senthil Kumar Muthusamy, Sumeet Walia, Sunil Singh Kushvaha
Summary: Recently, there has been a great demand for highly responsive photodetectors that can detect a wide range of wavelengths. Researchers have successfully fabricated a broadband metal-semiconductor-metal photodetector by integrating sputtered Bi2Se3 with laser molecular beam epitaxy grown GaN film. This photodetector shows high responsivity in both the ultraviolet and near-infrared regions.
MATERIALS RESEARCH BULLETIN
(2024)