Article
Materials Science, Ceramics
Xi Wang, Shicheng Zhou, Kaiyang Liu, Shan Deng, Yaqi Xiao, Xiuli Chen, Huanfu Zhou
Summary: Extensive research has been conducted on microwave dielectric materials for their application in 5G and 6G communication technologies. This study broadened the sintering temperature range of MT-C ceramics using a composite of CeO2 and Mg2TiO4 ceramics, and stabilized their microwave dielectric performance. The prepared MT-C ceramics exhibited low loss and uniform density, making them suitable for industrial applications in the field of communication.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Dai-Lin Zhou, Jiang-Hui Li, Qing-Yun Guo, Xiong Lin, Qin Zhang, Feng Chen, Di Han, Qiang Fu
Summary: This study explores the impact of POSS cage size on the dielectric and other properties of hybrid materials for the first time, finding that cage size strongly affects dielectric constants and may lead to the prediction of materials with lower dielectric constants.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Polymer Science
Koray Sarkaya, Mert Yildirim, Abdulkadir Alli
Summary: Conductive composite hydrogels containing polypyrrole and N-isopropylacrylamide were successfully prepared using free radical polymerization technique. These hydrogels showed higher thermal stability and dielectric constant compared to pure hydrogels. Electrical impedance spectroscopy measurements indicated that the composite hydrogels had significantly lower resistance values and higher conductivity compared to pure hydrogels.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Polymer Science
Weikai Sun, Minhao Yang, Kun Peng, Yaqin Fu
Summary: The demand for high-speed communication at high frequency has led to the development of low-dielectric polymer films. Aromatic polyimide (PI) is commonly used in flexible circuit boards due to its excellent properties, but its dielectric constant is relatively high for high-frequency communication. To address this, a hyper-crosslinked polymer (HCP) was synthesized and blended with PI to form all-organic HCP/PI composite films. The porous structure of HCP helps to reduce the dielectric constant of the PI matrix. By adjusting the HCP content, the dielectric constant of the composite films can be effectively lowered in the desired frequency range. This method is simple and can be applied to other organic component-filled PI systems.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yi Liu, Chen Ji, Linlin Lu, Jie Xu, Xiaolei Su
Summary: In this study, Ag/PC composite materials were prepared by a simple hydrothermal method, and the absorption performance was optimized by adjusting the reaction temperature. The incorporation of Ag particles promoted the graphitization of porous carbon and formed a conductive network, ultimately improving the complex permittivity of the composite material. The sample synthesized at 160 degrees C exhibited the optimal absorbing performance, with a minimum reflection loss value of -35.4 dB at 11.56 GHz.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Heng Wu, Zhixin Zeng, Shulin Xing, Mengshuang Lan, Wenchuan Li, Qin Zhang, Hong Ao, Chuang Zhou, Ruicheng Xu, Rongli Gao, Xiaoling Deng
Summary: In this study, magnetoelectric composite ceramics were synthesized by solid-state method, and the effects of composition on microstructure, dielectric, ferroelectric and magnetic properties were systematically investigated. The results showed that with increasing concentration of BTO-BA, the grain size of CCFO increased while that of BTO-BA was suppressed by the addition of CCFO, and decreasing CCFO concentration led to a more obvious magnetodielectric effect in the composites.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Materials Science, Ceramics
Haiyi Peng, Chuanqing Zhao, Haishen Ren, Tianyi Xie, Zhongyuan Gu, Shifeng Deng, Xiaogang Yao, Huixing Lin
Summary: A self-permeation method was used to fabricate a Ca0.9La0.067TiO3-0.01Al(2)O(3) (CLT)-reinforced polysilylaryl-enyne/fiber multilayer board with different volume fractions of CLT (0-40 vol%). The composite with a volume fraction of 30% CLT exhibited optimal dielectric properties, high thermal conductivity, excellent thermal resistance, and mechanical property, making it a potential candidate material for print circuit boards in the microwave communication field.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Review
Chemistry, Multidisciplinary
Soumyabrata Roy, Xiang Zhang, Anand B. Puthirath, Ashokkumar Meiyazhagan, Sohini Bhattacharyya, Muhammad M. Rahman, Ganguli Babu, Sandhya Susarla, Sreehari K. Saju, Mai Kim Tran, Lucas M. Sassi, M. A. S. R. Saadi, Jiawei Lai, Onur Sahin, Seyed Mohammad Sajadi, Bhuvaneswari Dharmarajan, Devashish Salpekar, Nithya Chakingal, Abhijit Baburaj, Xinting Shuai, Aparna Adumbumkulath, Kristen A. Miller, Jessica M. Gayle, Alec Ajnsztajn, Thibeorchews Prasankumar, Vijay Vedhan Jayanthi Harikrishnan, Ved Ojha, Harikishan Kannan, Ali Zein Khater, Zhenwei Zhu, Sathvik Ajay Iyengar, Pedro Alves da Silva Autreto, Eliezer Fernando Oliveira, Guanhui Gao, A. Glen Birdwell, Mahesh R. Neupane, Tony G. Ivanov, Jaime Taha-Tijerina, Ram Manohar Yadav, Sivaram Arepalli, Robert Vajtai, Pulickel M. Ajayan
Summary: Hexagonal boron nitride (h-BN) is a strong candidate for two-dimensional (2D) materials due to its exciting optoelectrical properties, combined with mechanical robustness, thermal stability, and chemical inertness. Various synthesis strategies for 2D h-BN, including chemical exfoliation, chemical, and physical vapor deposition, have been developed in recent years. The potential applications of h-BN structures in nanoelectronics, photonics, biomedical, anti-corrosion, and catalysis are described based on their extraordinary properties and stability.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Jiadong Lu, Songli Zhang, Leizhi Zhang, Chenxi Wang, Chunying Min
Summary: In this study, an ethyl phenylacetate-cured dicyclopentadiene phenol (DCPD) epoxy resin was used as the matrix, and KH550 coupling-agent-treated SiO2 hollow glass microspheres were incorporated to produce composite materials with low dielectric, high heat resistance, and high modulus. The prepared epoxy resin composite material exhibited good comprehensive performance, with a dielectric constant of 2.39 and a dielectric loss of 0.018 at 10 MHz. The thermal conductivity was 0.1872 Wm(-1) k(-1), the coefficient of thermal expansion was 64.31 ppm/K, the glass transition temperature was 172°C, and the elastic modulus was 1221.13 MPa when the hollow glass microsphere content was 10 wt.%.
Article
Crystallography
Jiuyuan Han, Mengjiao Chi, Liu Yang, Bing Liu, Minmin Mao, Hadi Barzegar Bafrooei, Zhongyan Ma, Yingjie Ren, Feng Shi, Ehsan Taheri-Nassaj, Dawei Wang, Kaixin Song
Summary: Dense composites of NaCl-NZO and HB-NZO-NaCl were prepared using the cold sintering process. The resulting ceramic composites showed promising characteristics with comparable permeability and dielectric constants suitable for radio-frequency electronic device applications. These findings indicate potential applications in wireless communication.
Article
Materials Science, Ceramics
Wenhan Dong, Bi-Xia Wang, Yi Yuan, Hua Wu, Alexei A. Bokov, Zuo-Guang Ye
Summary: In this study, a novel solid solution (1-x)(Pb0.5Sr0.5)(Zr0.5Ti0.5)O-3-xPbTiO(3) was synthesized to explore lead-reduced dielectric materials. The crystal structure and dielectric properties were studied, revealing a structural transformation from a cubic phase to a tetragonal phase. The temperature dependence of dielectric constant exhibits relaxor behavior or a normal ferroelectric phase transition.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Polymer Science
Jing Guan, Laifei Cheng, Ye Fang
Summary: Introduction of nano silicon nitride (Si3N4) into polyvinylidene fluoride (PVDF)-based film improves its dielectric thermal stability and energy storage performance. Increase in the amount of Si3N4 doping enhances the discharging energy density and thermal dielectric relaxor temperature of the composite film, making it more suitable for high-temperature energy storage applications.
Article
Chemistry, Physical
Fei Wang, Qianfeng Zhou, Zhe Zhang, Yonghua Gu, Jiliang Zhang, Kaiyong Jiang
Summary: This paper focuses on preparing multi-component complex structure metamaterial absorbers using three-dimensional printing technology. The key is to prepare raw materials suitable for 3D printing with excellent absorption properties. The experimental results show that the CB-CIP/PLA composite material has excellent microwave absorption properties and a broadband characteristic.
Article
Nanoscience & Nanotechnology
Xiaozheng Liang, Weimin Xie, Yangjun Ren, Huaming Yang
Summary: This study successfully increased the breakdown strength and energy density of polymer nanocomposites by constructing a gradient dielectric constant buffer layer, providing a new strategy to balance the relationship between energy density and breakdown strength.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Multidisciplinary Sciences
Chunxiang Zhao, Xiaolin Cai, Liangliang Liu, Chengyan Liu, Zaiping Zeng, Chunyao Niu, Congxin Xia, Yu Jia
Summary: The discovery of 31 2D tellurium allotropes with different cohesive energies and properties, including semiconductors, topological insulators, and superconductors, enriches the field of 2D elemental materials. One of these allotropes exhibits both topological and superconducting properties, which is unique in the reported elemental 2D materials. This research provides rich possibilities for exploring novel functionalities for future device applications.
ADVANCED THEORY AND SIMULATIONS
(2021)
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)
