Article
Chemistry, Physical
Yaniv Cohen, Siva K. Reddy, Assaf Ya'akobovitz
Summary: The study shows that graphene foam devices have a much higher convective coefficient compared to metals, and exhibit reproducible thermal behavior. This suggests that graphene foam may be a promising material for efficient heat dissipation applications, particularly in areas such as circuits.
Article
Polymer Science
Chunxia Zhao, Haoran Huang, Jiaxin Li, Yuntao Li, Dong Xiang, Yuanpeng Wu, Ge Wang, Mingwang Qin
Summary: A superhydrophobic graphene/polystyrene composite material with a micro-nanopore structure was prepared, which could efficiently and continuously separate immiscible and emulsified oil/water mixtures.
Article
Nanoscience & Nanotechnology
Ekrem Ozkan, Mark Garren, James Manuel, Megan Douglass, Ryan Devine, Arnab Mondal, Anil Kumar, Morgan Ashcraft, Rashmi Pandey, Hitesh Handa
Summary: Hybrid organic-inorganic materials with desirable properties were successfully fabricated through a simple, scalable, solvent-free method. The resulting three-dimensional porous foams exhibited superhydrophobic/superoleophilic properties, high oil adsorption capacity, and excellent oil/water separation efficiency in harsh environments. Additionally, the introduction of fillers led to improved electrical conductivity and biofouling resistance of the foams. This composite strategy opens up new possibilities for the development of multifunctional hybrid materials for diverse applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Min Jun Oh, Je Hyun Lee, Pil J. Yoo
Summary: A highly efficient thermal insulation material based on graphene with anisotropic closed-cellular structures has been developed to suppress thermal transport in all directions. This material exhibits remarkably low thermal conductivity of 5.75 mW m(-1) K-1, offering a novel toolkit for next-generation high-performance insulation materials.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Lekshmi A. Kurup, Cameron M. Cole, Joshua N. Arthur, Soniya D. Yambem
Summary: The development of capacitive flexible pressure sensors using graphene-based conductive foams showed high sensitivity and durability, especially in detecting weak physiological signals within a low pressure range. The porous foams with graphene-coated pores demonstrated the highest sensitivity and showed potential applications in biomedical sensing and wearable devices.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tian Yang, Chao Wang, Zuobing Wu
Summary: Strain hardening in graphene foams is induced by cumulative nonlocalized bond-breakings and microstructure rearrangements, and can be effectively tuned by the number of graphene layers and cross-link densities. The shear stiffness of graphene foams increases linearly with cross-link density and exponentially with the number of graphene layers. These findings provide insights for optimizing structural designs in various applications based on the mechanical properties of graphene foams.
Article
Materials Science, Multidisciplinary
Li He, Dongfang Wang, Tiantian Ma, Jinliang Song, Yongkang Wu, Yucheng Li, Yongfeng Deng, Guoping Zhang
Summary: An experimental study on the processing and mechanical properties of graphene-reinforced superhydrophobic siloxane was conducted. The results show that adding 0.9 wt% graphene can increase the strength of the superhydrophobic composites to 34 MPa. Ultrasonication improves microscale dispersion but decreases the composite's strength, while curing at elevated temperatures leads to a more uniform distribution of graphene but induces thermal cavitation and bubble formation.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Tamara Calvo-Correas, Lorena Ugarte, Izaskun Larraza, Cristina Pena-Rodriguez, M. Angeles Corcuera, Arantxa Eceiza
Summary: The study found that adding polyurethane powder at low contents did not significantly alter the final properties of the foam, but instead increased the foam's ability to retain carbon fillers. The compressive properties of the hybrid foams were unaffected by the addition of graphite and graphene. Additionally, the hybrid composites showed selective absorption capacity, maintaining the hydrophobic nature of the foams while providing oil absorption capacity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Polymer Science
Fei Jia, Cong Liu, Bo Yang, Alamusi Lee, Liangke Wu, Huiming Ning
Summary: High dielectric silicone rubber-based nanocomposites were prepared by adding graphene through ultrasonication and mechanical mixing, resulting in materials with improved properties. The cellular structure and dielectric properties were greatly influenced by the content of graphene and the expansion rate.
Article
Chemistry, Physical
Jiaxi Zeng, Xiaoli Zhao, Hongbin Lu
Summary: This study demonstrates a liquid-phase sewing strategy to construct carbon foams (CFs) directly from flake graphite, overcoming the challenge of constructing CFs with desired structures and intact lattice integrity. The CFs constructed through this method exhibit high conductivity and high-performance electromagnetic interference shielding effectiveness.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Md. Nizam Uddin, Fenil J. Desai, Balakrishnan Subeshan, Muhammad M. Rahman, Eylem Asmatulu
Summary: A study on producing superhydrophobic nanocomposite fibers from recycled materials offers a cost-effective solution for atmospheric clean water production, particularly suitable for arid areas. These fibers exhibit excellent water-repellent properties and have the potential to be mass-produced for clean water at a relatively low cost.
SURFACES AND INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jianan Huang, Dawei Li, Zhilong Peng, Bo Zhang, Yin Yao, Shaohua Chen
Summary: This paper presents a novel anti-icing/deicing material based on graphene foams (GF) that integrates electrothermal and photo thermal conversion functions with superhydrophobicity. The GF-based material exhibits impressive anti-icing/deicing performances, requiring significantly lower voltages compared to previous counterparts. Additionally, the material enables faster and more efficient deicing/defrosting under sunlight illumination. The research highlights the superior energy utilization efficiency and universal applicability of the GF-based material for protecting key components in industrial equipment from icing.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Richard J. G. Loffler, Martin M. Hanczyc, Jerzy Gorecki
Summary: In this paper, we described a novel plastic material that can exhibit self-propelled motion on the water surface. By using scanning electron microscopy, the microporous structure of solid polypropylene foam in the material was visualized and characterized. The material showed superhydrophobicity and strong absorption of non-polar liquids, suggesting potential scientific and industrial applications.
SCIENTIFIC REPORTS
(2022)
Article
Polymer Science
Xun Hui Wu, Yoon Yee Then
Summary: This study presents a facile and cost-effective method for fabricating superhydrophobic surfaces using graphene and titanium dioxide nanoparticles. The graphene/TiO2-coated surfaces on a biodegradable thermoplastic poly(lactic acid) substrate achieved excellent water-repellent properties, making them suitable for reducing hazardous complications in medical devices. The durability and effectiveness of the superhydrophobic coating further suggest its potential in biomaterial manufacturing.
Article
Materials Science, Ceramics
Shih-Feng Tseng, Yun-Hsin Yang
Summary: This study proposes the use of superhydrophobic graphene/ceramic templates fabricated through laser texturing and patterning for the preparation of particulate drugs, and successfully develops graphene-based self-heating devices for experiments.
CERAMICS INTERNATIONAL
(2022)