Article
Materials Science, Composites
Yuping Zhu, Yifan Qian, Ling Zhang, Ben Bai, Xue Wang, Jiaqiang Li, Shuguang Bi, Lijuan Kong, Wanshuang Liu, Liying Zhang
Summary: Thermally conductive geopolymer nanocomposites were developed by incorporating silico-coated multi-walled carbon nanotubes into the matrix, leading to a 71.7% increase in thermal conductivity compared to neat geopolymer. This enhancement demonstrates the feasibility of using geopolymer nanocomposites in applications requiring high thermal conductivity.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Lucia Fernandez Garcia, Feridoon Azough, Gareth Parsons, Amanda Quadling, Bing Wang, Robert Freer
Summary: The study found that SiC varistor performance is significantly influenced by SiC grain size, composition, and graphite content. Higher graphite content leads to lower non-linear coefficient and breakdown field. Decreasing SiC grain size results in increased non-linear coefficient and breakdown field strength.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Yanzhi Cai, Yang Li, Shaohua Huang, Laifei Cheng, Tingting Liu, Haiming Yu, Dengpeng Chen, Zhongyi Hu, Yuhan Wang, Yuan Zhou
Summary: A carbon nanotube-carbon fiber/silicon carbide laminated composite with excellent performance was prepared and showed high total shielding efficiency in the X-band and Ku-band, as well as very low transmission coefficient. The multilevel and multiscale structure of the laminated composite demonstrated high density and thickness.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Xuelu Wang, Chunjin Chen, Binbin Jiang, Huichao Duan, Kui Du
Summary: Phase engineering of nanomaterials is gaining increasing research interest due to the influence of crystal structures on the physical and chemical properties of metals. In this study, a novel simple hexagonal structured gold was fabricated through in situ selective etching on an ordered Cu-Au intermetallic compound, demonstrating a low coordination number and packing fraction. The discovery of this new crystal structure suggests that metals can form diverse structures by changing their effective atomic volume, providing opportunities for engineering new physical properties and applications.
Article
Materials Science, Multidisciplinary
Xiaojie Wei, Zhidong Xia, Wei Zhou, Pei Huang, Peng Fu
Summary: A new simplified finite element analysis method is proposed to predict the electrical and strain response probability of graphene composites. The dispersion of agglomerates enhances the electrical properties of composite materials, while the size distribution of fillers has a negative impact on the electrical properties. These results are important for the evaluation and design of graphene composites as sensing materials in flexible sensors.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mattias Flygare, Krister Svensson
Summary: Electrical characterization of nanostructures is essential for future applications of nanomaterials. Reliable measurement methods and standards are needed for accurate analysis. This study focuses on a two-probe method performed inside a transmission electron microscope to determine the electrical conductivity of carbon nanotubes. The results show that this method can accurately determine the linear resistance of the outermost nanotube wall, even for high crystallinity materials.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Inorganic & Nuclear
Artem Pogodin, Mykhailo Filep, Tetyana Malakhovska, Vasyl Vakulchak, Vladimir Komanicky, Serhii Vorobiov, Vitalii Izai, Iryna Shender, Vitaliy Bilanych, Oleksandr Kokhan, Peter Kus
Summary: This paper presents the preparation and investigation of Ag7(Si1-xGex)S5I (х = 0.2; 0.4; 0.6; 0.8) ceramic materials. The fabricated ceramics were characterized by chemical homogeneity and similar crystallite size. The electrical conductivity showed non-linear behavior and a conductivity maximum at x = 0.6.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Yasser Zare, Kyong Yop Rhee
Summary: This study focuses on the conductivity model of carbon nanotubes (CNTs)-reinforced polymer nanocomposites (PCNTs), considering the roles of interphase and tunneling sections and introducing an expanded Takayanagi equation. Experimental data show good agreement between the model predictions and real specimens. Several factors, such as filler loading, percolation onset, and CNT volume fraction, influence the conductivity of the nanocomposites.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Engineering, Electrical & Electronic
S. Prathap, W. Madhuri
Summary: Pb1-xCoxFe12O19 nano-crystallites with an average crystal diameter varying between 74 and 86 nm were prepared via sol-gel auto-combustion, showing a single-phase structure confirmed by XRD analysis. The surface morphology of the ferrites revealed a long hexagonal structure and dielectric characterization indicated that the composition x=0.75 is suitable for high definition television deflection yokes due to its high dielectric constant and low electrical conductivity.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Polymer Science
Vanessa Garcia-Martinez, Maria R. Gude, Silvia Calvo, Alejandro Urena
Summary: By introducing two different contents of graphene nanoplatelets into benzoxazine resin, a polymeric nanocomposite with multifunctional properties including high electrical and thermal conductivity was obtained. The nanocomposites showed improved mechanical and thermo-mechanical properties, as well as increased electrical and thermal conductivities. Additionally, the barrier properties of the resin were enhanced by the addition of graphene nanoplatelets.
Article
Engineering, Chemical
Mirza Nadeem Ahmad, Sohail Nadeem, Raya Soltane, Mohsin Javed, Shahid Iqbal, Zunaira Kanwal, Muhammad Fayyaz Farid, Sameh Rabea, Eslam B. Elkaeed, Samar O. Aljazzar, Hamad Alrbyawi, Walid F. Elkhatib
Summary: The poly(o-anisidine)/BaSO4 nanocomposites were prepared and characterized for their potential antibacterial properties. The properties of the nanocomposites were tunable by changing the ratio of BaSO4 filler, and the interaction between POA and BaSO4 was confirmed by FTIR analysis. The nanocomposites exhibited good absorption behavior in UV-visible spectra. Moreover, the POA/BaSO4 nanocomposites showed effective antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa.
Article
Chemistry, Multidisciplinary
Zilong Jiang, Bo Jiang, Boyin Yang, Xin Liu, Yang Yang, Chunling Zhang, Yingshuang Shang, Haibo Zhang
Summary: Introducing a small amount of conjugated fluorene group into PEEK can improve the interface thermal resistance and filler dispersion, resulting in PEEK/MWCNT nanocomposites with high thermal conductivity and tensile strength.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Lu Lu, Chuan-Lin Zhang, Shao-Bo Mi
Summary: By using advanced electron microscopy imaging, researchers have revealed the atomic-scale microstructure of doped TiO2 thin films and discovered phenomena such as interface structures, cation segregation, and phase formation.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Priyanka Rani, Rajender Singh Malik
Summary: In order to address electromagnetic pollution, researchers have developed an electromagnetic shielding material composed of polyetherimide and sulfonated poly(ether ether ketone). This material exhibits excellent electrical conductivity and shielding effectiveness.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Huagao Wang, Rongjian Lu, Jia Yan, Jingsong Peng, Antoni P. Tomsia, Rui Liang, Guoxing Sun, Mingjie Liu, Lei Jiang, Qunfeng Cheng
Summary: Inspired by nacre, this study presents tough and conductive MXene/epoxy layered bulk nanocomposites with self-monitoring capability and excellent electromagnetic interference shielding efficiency. Surface chemical modification and annealing treatment improved the interfacial interactions and orientation of MXene lamellar scaffold. This research provides a new avenue for fabricating high-performance epoxy nanocomposites.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
