Article
Chemistry, Physical
Tian Xia, Jianyun Cao, Mark A. Bissett, Harry Waring, Ying Xiang, Gergo Pinter, Andrey V. Kretinin, Pei Yang, Yanlei Zhu, Xin Zhao, Stephen A. Hodge, Thomas Thomson, Ian A. Kinloch
Summary: Researchers have found that annealing can be used to fabricate a carbon film with a graphenic structure, which inherits the properties of rotated/slipped few-layer graphene and exhibits high flexibility and anisotropic transport properties. The annealed, graphenic film has a nearly intact graphene lattice structure with random interlayer rotations. It shows a high anisotropic thermal conductivity ratio and excellent electromagnetic interference shielding effectiveness.
Article
Chemistry, Physical
Soonsung So, Jeong-Yun Kim, Duckjong Kim, Joo-Hyoung Lee
Summary: The study reveals that Pt-ALD can assist in the healing of defects in graphene, with single and double vacancies healed through direct Pt filling and carbon adatoms removed primarily through dissociation by oxygen molecules. The recovery of thermal conductivity is mainly achieved through the removal of carbon adatoms, while the improvement from vacancy filling is insignificant.
Article
Thermodynamics
Ziqiang Yang, Ruipeng Wang, Haipeng Li, Ho-Kin Tang, Kui Han
Summary: The phonon thermal conductivity of polycrystalline graphene nanoribbons was calculated using non-equilibrium molecular dynamics method. The effects of grain size, boundary orientation, vacancy defect, and strain on the phonon thermal conductivity were studied. It was found that the length and grain size of the nanoribbons have a positive impact on the thermal conductivity, while the grain boundary orientation and presence of vacancy defects lead to a reduction in thermal conductivity. The study provides important insights into the physical mechanism of phonon thermal transport in polycrystalline graphene and offers guidance for regulating its thermal conductivity.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Nanoscience & Nanotechnology
Hang Yin, Ruisheng Zhao, Kaidi Liu, Yi Yang, Jin-Wu Jiang, Jing Wan
Summary: This study investigates the impact of defect concentration and nanopore shape on the thermal conductivity of porous graphene using molecular dynamics simulations. The results reveal that defect concentration plays a dominant role in reducing thermal conductivity, while the shape of nanopores has a coupling effect. The findings provide insights for optimizing and regulating the thermal properties of porous graphene.
Article
Thermodynamics
Jazael Gomez, Arturo Estrada, Argelia Balbuena Ortega, Oscar Arredondo, Rocio Nava, Raul Barbosa, Dulce Capitanachi, Karen Lozano
Summary: Hybrid graphene-fiber carbon systems can be produced by adding sodium chloride to polyvinyl alcohol solution, spinning under high humidity conditions, and subsequent carbonization processes. The thermal conductivity of the resulting material can reach up to 28 W m K-1, showing potential for various industrial applications.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Composites
Zijian Lu, Wei Wu, Dietmar Drummer, Yi Wang, Chao Liu, Shuo Li, Xintong Zhao
Summary: Studying new thermal conductivity fillers is important for practical thermal management applications. In this study, a multi-scale assembled thermal conductivity composite Al2O3-ZnO NWs/GO/EP was developed. The composite exhibited good thermal conductivity and mechanical properties with low content of fillers.
POLYMER COMPOSITES
(2023)
Article
Mathematics, Applied
Saumen Acharjee, Nimisha Dutta, Reeta Devi, Arindam Boruah
Summary: In this study, we investigated the nonlinear oscillations and chaotic dynamics of perturbed bilayer graphene-like structures. We obtained the potential energy surface (PES) of these structures by considering interactions of co-aligned and counter-aligned arrangements of atoms. Using the Poincare surface of section, we analyzed the dynamics for specific systems and generalized it for other systems as well. The nature of the oscillations and equilibrium points was explored, along with the effects of perturbation strength.
Article
Nanoscience & Nanotechnology
Na Song, Feng Zhang, Donglei Cao, Pei Wang, Peng Ding
Summary: The study demonstrates that PP/rGO hybrid films exhibit excellent thermal conductivity and good mechanical properties, mainly due to their special structure and effective interface interaction. The research results provide new ideas and methods for the application of high thermally conductive composites.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Physics, Multidisciplinary
Zheng Cui-Hong, Yang Jian, Xie Guo-Feng, Zhou Wu-Xing, Ouyang Tao
Summary: This study investigates the effects of ion irradiation on the properties of phosphorene, including defect formation probability, thermal conductivity, and the influence of vacancies on phonon participation rate. The research provides a theoretical basis for tuning the heat transport properties of phosphorene through defect engineering.
ACTA PHYSICA SINICA
(2022)
Article
Nanoscience & Nanotechnology
Xinglong Pan, Michael G. Debije, Albert P. H. J. Schenning, Cees W. M. Bastiaansen
Summary: This study prepared high thermal conductivity polymer composite materials using water-soluble PVA and dispersible GO, with the help of a co-additive to improve dispersion and thermal conductivity. The hydrogen bonding between GO and PVA, along with the alignment in composite films, contributed to the improved thermal conductivity. This work offers a new method for preparing water-processable polymer composite films with high thermal conductivity, potentially useful for thermal management applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Limin Mao, Fei Wang, Jian Mao
Summary: Defects engineering in electrode materials is popular in lithium-sulfur (Li-S) batteries, and this paper reveals the importance of high catalytic activity in choosing electrode materials. The experiments show that zinc vacancies in zinc oxide (ZnO) can enhance the adsorption and catalytic activity for polysulfides, while excessive vacancies result in worse adsorption performance. By combining different concentrations of zinc vacancies in ZnO with reduced oxide graphene (rGO) as sulfur cathodes, the ZnO-2h/rGO/S cathode exhibits the best performance. Density functional theory calculations further demonstrate higher conductivity and lower adsorption for Zn1-xO than ZnO, explaining the stronger catalytic activity of Zn1-xO.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Thermodynamics
Ding-Jun Huang, Wei-Tsu Peng, Yen-Ta Lee, Ming-Chang Lu
Summary: A high-quality reduced graphene oxide (rGO) film was synthesized using a chemical-thermal method at a low temperature, which exhibited excellent thermal conductivity. It was found that the rGO film could effectively dissipate heat and reduce hotspot temperature and thermal spreading resistance when applied to electronic chips.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Sachin Kumar Yadav, Diptarka Roy, Anil Kumar Yadav, Pinky Sagar, Sarvesh Kumar Avinashi
Summary: In this study, the effect of loading mass concentrations and temperature on the thermal properties of graphene oxide-ethylene glycol nanofluids was investigated. The results showed that the thermal transport characteristics of the nanofluids were influenced by the loading mass concentration and temperature. The thermal conductivity of the nanofluids increased with an increase in mass concentration, indicating a promising prospect for usage in the coolant industry.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Manufacturing
Yingchun Liu, Kun Wu, Maoping Lu, Enxiang Jiao, Hangzhen Zhang, Jun Shi, Mangeng Lu
Summary: By optimizing the interface structure, researchers have successfully fabricated flexible graphene/MXene (GM) films, improving thermal conductivity and enhancing flame retardancy. GM films exhibit excellent thermal conduction and flame retardancy, making them suitable for electronic device cooling applications.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Xiaocui Wu, Tengfei Liu, Wanxin Ni, Hao Yang, Hao Huang, Shuwei He, Cuiyu Li, Hui Ning, Wenting Wu, Qingshan Zhao, Mingbo Wu
Summary: This study presents a visible light-driven photo-Fenton-like oxidation process using iron hydroxide oxide with controllable oxygen vacancy defects on reduced graphene oxide nanosheets. The optimized catalyst exhibited superior performance for Rhodamine B degradation with low H2O2 dosage, and showed excellent reusability and applicability. The results highlight the importance of moderate oxygen vacancy defects in enhancing light absorption, organic pollutant removal, and charge transfer, providing insights for the development of efficient photo-Fenton-like catalysts for wastewater treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Jing Cao, Kun Cai, Qing Wang, Jiao Shi
MATERIALS & DESIGN
(2016)
Article
Materials Science, Coatings & Films
Donghui Meng, Rongxin Yan, Guohua Ren, Lichen Sun, Lina Wang, Chongwu Guo, Li Wang, Rongping Shao, Yong Wang, Wei Sun
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2018)
Article
Nanoscience & Nanotechnology
Jing Cao, Kun Cai
Article
Engineering, Aerospace
Li-Na Wang, Yong Wang, Heng-Chao Sun, Guo-Hua Ren, Li-Chen Sun, Dong-Hui Meng
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING
(2019)
Article
Biochemistry & Molecular Biology
Jing Cao, Yixuan Wang, Jiao Shi, Junrui Chai, Kun Cai
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2018)
Article
Materials Science, Multidisciplinary
Yixuan Wang, Jing Cao, Junrui Chai, Jiao Shi
COMPUTATIONAL MATERIALS SCIENCE
(2020)
Article
Environmental Sciences
Chen Zhang, Junrui Chai, Jing Cao, Zengguang Xu, Yuan Qin, Zongjie Lv
Article
Construction & Building Technology
Yi Yang, Yixuan Wang, Jing Cao, Zengguang Xu, Yanlong Li, Yunhe Liu
Summary: In this study, the oxidative aging behavior of asphalt was investigated in picosecond scale using reactive molecular dynamic method, and the quantitative analysis of the variation regularity of ketones, sulfoxides and intermediate products with the oxidation process was conducted. It was found that the formation of sulfoxides groups preceded that of ketones, and the intermediate products promoted the oxidation reaction, with free radicals being the main reason for the polymerization of asphalt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Shaolun He, Jing Cao, Junrui Chai, Yi Yang, Zengguang Xu, Yuan Qin, Ming Li, Heng Zhou
Summary: The impact of inert reinforcement of different sizes on the pore structure, hydration products, and microscopic morphology of mortar is revealed. The study shows that nanoscale materials enhance hydration but have inadequate filling of larger pores, resulting in lower thermal conductivity in the early stage. Micron-reinforcing phase effectively fills capillary pores and advances the hydration process. Milli-reinforcing phase delays hydration due to the obvious water absorption of fibrous floc. In terms of thermal conductivity, porosity is the main factor in the early curing stage.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Proceedings Paper
Engineering, Mechanical
G. H. Ren, D. H. Meng, R. X. Yan, C. W. Guo
2017 4TH INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS, MECHANICS AND STRUCTURAL ENGINEERING (4TH AMMSE 2017)
(2017)
Review
Materials Science, Multidisciplinary
Yulong Ying, Wen Ying, Qiaochu Li, Donghui Meng, Guohua Ren, Rongxin Yan, Xinsheng Peng
APPLIED MATERIALS TODAY
(2017)
Article
Materials Science, Multidisciplinary
Pan Hu, Donghui Meng, Guohua Ren, Rongxin Yan, Xinsheng Peng
APPLIED MATERIALS TODAY
(2016)