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  • Open Access

    ARTICLE

    Surface Wettability and Boiling Heat Transfer Enhancement in Microchannels Using Graphene Nanoplatelet and Multi-Walled Carbon Nanotube Coatings

    Ghinwa Al Mimar1, Natrah Kamaruzaman1,*, Kamil Talib Alkhateeb2

    Frontiers in Heat and Mass Transfer, Vol.23, No.6, pp. 1933-1956, 2025, DOI:10.32604/fhmt.2025.070118 - 31 December 2025

    Abstract The pivotal role microchannels play in the thermal management of electronic components has, in recent decades, prompted extensive research into methods for enhancing their heat transfer performance. Among these methods, surface wettability modification was found to be highly effective owing to its significant influence on boiling dynamics and heat transfer mechanisms. In this study, we modified surface wettability using a nanocomposite coating composed of graphene nano plate (GNPs) and multi-walled carbon nanotubes (MWCNT) and then examined how the modification affected the transfer of boiling heat in microchannels. The resultant heat transfer coefficients for hydrophilic and… More >

  • Open Access

    ARTICLE

    Advanced chalcogenide GaS3 coatings for reducing reflective loss and boosting efficiency in silicon photovoltaics

    R. M. Reddya, J. A. Prakashb, A. Tonkc, S. Karvendhand, G. Sivaramane, D. K. Patelf, S. P. Dillibabug, S. Karthikeyanh,*, T. Thirugnanasambandhami

    Chalcogenide Letters, Vol.22, No.9, pp. 797-806, 2025, DOI:10.15251/CL.2025.229.797

    Abstract The current situation necessitates advancements in renewable energy as an alternative for conventional energy sources. Reflection loss in solar cells is a contributing factor to diminish the power conversion efficiency, which can be reduced by employing antireflective coatings. The current investigation focuses on improvement in photocurrent generation of monocrystalline silicon solar cells by employing Gallium sulfide (GaS3) as anti-reflective coatings (ARC). The RF sputter coating method has been used for GaS3 deposition at different coating durations (10, 20, 30, and 40 minutes). The transmittance, reflectance, I-V characteristics, electrical properties, and thermal behaviour of the Ga2S3 coatings… More >

  • Open Access

    PROCEEDINGS

    Simulation Analysis of in-Situ TiC Generation by Laser Cladding and Study on Mechanical Properties of Enhanced Coatings

    Xiaoxiao Li, Xiujiang Shi*, Yusheng Jian, Yaqi Yang, Bailing Guan, Zehong Cai

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.4, pp. 1-1, 2025, DOI:10.32604/icces.2025.011099

    Abstract Based on COMSOL simulation software, the planar Gaussian heat source model was used to simulate and analyze the surface reinforced nickel-based coating on H13 steel, and the optimal process parameters were obtained. Secondly, TiC reinforced nickel base coating was prepared in situ on H13 steel surface by laser cladding technology. The morphology, phase composition, microhardness and friction and wear properties of matrix, single coating and gradient coating were compared by scanning electron microscopy, X-ray diffractometer, microhardness tester and universal friction and wear machine. Finally, the bionic gradient TiC reinforced nickel base coating was prepared on… More >

  • Open Access

    REVIEW

    Design of Nanostructured Surfaces and Hydrogel Coatings for Anti-Bacterial Adhesion

    Nanpu Cao1, Huan Luo1, Song Yue1, Yong Chen1, Mao Xu1, Pu Cao1, Tao Xin1, Hongying Luo1, Fa Zhang2,*

    Journal of Polymer Materials, Vol.42, No.3, pp. 661-675, 2025, DOI:10.32604/jpm.2025.067313 - 30 September 2025

    Abstract This review systematically summarizes recent advancements in the design of antibacterial hydrogels and the surface-related factors influencing microbial adhesion to polymeric materials. Hydrogels, characterized by their three-dimensional porous architecture and ultra-high water content, serve as ideal platforms for incorporating antibacterial agents (e.g., metal ions, natural polymers) through physical/chemical interactions, enabling sustained release and enhanced antibacterial efficacy. For traditional polymers, surface properties (e.g., roughness, charge, superhydrophobicity, free energy, nanoforce gradients) play critical roles in microbial adhesion. Modifying the surface properties of polymers through surface treatment can regulate antibacterial performance. In particular, by referencing the micro/nanostructures found More >

  • Open Access

    ARTICLE

    The Impact of Caulerpa lentillifera Seaweed-Based Coatings on Physicochemical Characteristics and Shelf Longevity of Fruits and Vegetables

    Nuraqilah Syamimi Mat Jauilah1, Kobun Rovina2,*, Wahidatul Husna Zuldin3, Sarifah Supri1, Patricia Matanjun1, Luh Suriati4

    Journal of Polymer Materials, Vol.42, No.3, pp. 853-871, 2025, DOI:10.32604/jpm.2025.066751 - 30 September 2025

    Abstract Food breakdown during storage and transit greatly adds to worldwide food waste. Biodegradable edible coatings derived from natural sources provide a sustainable method to extend the shelf life and preserve the freshness of fresh fruit. This study explores the potential of the readily available and nutrient-rich seaweed, Caulerpa lentillifera, as a base material for edible coatings that can enhance the shelf life and maintain the physicochemical properties of fruits and vegetables. Caulerpa lentillifera, a marine macroalga renowned for its unique biochemical composition, presents a promising avenue for developing sustainable bio-coatings to improve the post-harvest quality of fresh… More >

  • Open Access

    REVIEW

    Review of Conductive Polymer Coatings for Metallic Bipolar Plates in Proton Exchange Membrane Fuel Cells

    Ziyang Niu1,#, Xiaofen Wang2,4,#, Yuanyuan Li1,2,3,*, Zhuo He2, Feng Huang1, Qianjun Deng2, Fei Hu2, Qiongyu Zhou2,*

    Journal of Polymer Materials, Vol.42, No.1, pp. 57-80, 2025, DOI:10.32604/jpm.2025.060401 - 27 March 2025

    Abstract Proton exchange membrane fuel cells (PEMFCs) have gained increasing interests as promising power sources due to their ability to convert hydrogen and oxygen directly into electricity with high efficiency and zero greenhouse gas emissions. Bipolar plates (BPs) are considered as a critical component of PEMFCs, serving to collect current, separate gases, distribute the flow field, and conduct heat. This paper reviews the technical status and advancements in BP materials, with special focus on strategies for enhancing interfacial contact resistance (ICR) and corrosion resistance through conductive polymer (CP) coatings. First, commonly used BP materials in PEMFCs More >

  • Open Access

    PROCEEDINGS

    Catheters with Bioactive Coatings

    Shady Farah1,2,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.32, No.2, pp. 1-1, 2024, DOI:10.32604/icces.2024.012639

    Abstract Catheters are among the most frequently used medical tools in modern therapies. Several diseases are treated by catheters (e.g. hydrocephalus) in cardiovascular, urological, gastrointestinal neurovascular, and ophthalmic diseases. Approximately 150 million intravascular catheters are implanted annually in the United States alone. However, although very efficient, following their insertion, catheters are subjected to numerous complications, including resistance to flow, blockage, and mechanical malfunctions, and being subjected to host-immune response and microbial infection. To overcome these complications, we proposed to develop the next generation of catheters with improved functionality and liquid flowability. We assume that polymeric coating More >

  • Open Access

    PROCEEDINGS

    Analysis of Thermomechanical Delamination Mechanisms in Segmented High-Temperature Protective Coatings and Design Maps for the Durable Coatings

    Biao Li1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.30, No.1, pp. 1-1, 2024, DOI:10.32604/icces.2024.012788

    Abstract Protective coatings play a crucial role in preserving high-temperature engineering components from environmental degradation [1-3]. The durability of these coatings is crucial for maintaining the structural integrity of the components. Introducing a segmented microstructure was recognized as an effective strategy for enhancing the strain tolerance of coatings by mitigating the in-plane stiffness of the coatings, thereby alleviating interface stresses and delamination driving forces. While previous studies on delamination mechanisms in high-temperature protective coatings have predominantly focused on either pure mechanical loading or pure thermal loading conditions (i.e., residual stress) due to their ease of implementation,… More >

  • Open Access

    ARTICLE

    Enhancing the Shelf Life of Edible Musa Acuminate with Biopolymer Coating

    Manivasagam Vishwa Rohini1,#, Sathish Kiruba1, Danniel Santhanaraj1, Prakash Priyanka Nair1, P. Sudhakara2,*, Jujhar Singh3, Balamurugan Rathinam4,*, Vanaraj Ramkumar5,6,#

    Journal of Polymer Materials, Vol.41, No.3, pp. 159-178, 2024, DOI:10.32604/jpm.2024.054801 - 30 September 2024

    Abstract The Cavendish banana, Musa acuminata, is a climacteric fruit that ripens quickly after harvest. Due to their high perishability and susceptibility to disease, bananas have substantial postharvest losses. After harvesting, it is important to extend the bananas’ shelf life. Unique coating gel solutions based on glycerol and ascorbic acid were developed to accomplish this. Chitosan mixed with glacial acetic acid, lactic acid, and sodium alginate were among the gel solutions in these combinations. The goal was to improve banana preservation while maintaining freshness and quality by implementing innovative formulations and techniques. The fruits are hand-dried and… More >

  • Open Access

    ARTICLE

    Multiscale Simulation of Microstructure Evolution during Preparation and Service Processes of Physical Vapor Deposited c-TiAlN Coatings

    Yehao Long, Jing Zhong*, Tongdi Zhang, Li Chen, Lijun Zhang*

    CMC-Computers, Materials & Continua, Vol.79, No.3, pp. 3435-3453, 2024, DOI:10.32604/cmc.2024.051629 - 20 June 2024

    Abstract Physical Vapor Deposited (PVD) TiAlN coatings are extensively utilized as protective layers for cutting tools, renowned for their excellent comprehensive performance. To optimize quality control of TiAlN coatings for cutting tools, a multi-scale simulation approach is proposed that encompasses the microstructure evolution of coatings considering the entire preparation and service lifecycle of PVD TiAlN coatings. This scheme employs phase-field simulation to capture the essential microstructure of the PVD-prepared TiAlN coatings. Moreover, cutting simulation is used to determine the service temperature experienced during cutting processes at varying rates. Cahn-Hilliard modeling is finally utilized to consume the More >

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