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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

    Optimization and Sensitivity Analysis of Non-Isothermal Carreau Fluid Flow in Roll Coating Systems with Fixed Boundary Constraints: A Comparative Investigation

    Mujahid Islam1, Fateh Ali1,*, Xinlong Feng1,*, M. Zahid2, Sana Naz Maqbool1

    CMES-Computer Modeling in Engineering & Sciences, Vol.145, No.3, pp. 3511-3561, 2025, DOI:10.32604/cmes.2025.073678 - 23 December 2025

    Abstract Roll coating is a vital industrial process used in printing, packaging, and polymer film production, where maintaining a uniform coating is critical for product quality and efficiency. This work models non-isothermal Carreau fluid flow between a rotating roll and a stationary wall under fixed boundary constraints to evaluate how non-Newtonian and thermal effects influence coating performance. The governing equations are transformed into non-dimensional form and simplified using lubrication approximation theory. Approximate analytical solutions are obtained via the perturbation technique, while numerical results are computed using both the finite difference method and the BVP-Midrich technique. Furthermore, More >

  • Open Access

    ARTICLE

    Boosting power efficiency in polycrystalline silicon solar cells: antimony selenide sputter coating with advanced optical, electrical, and thermal insights

    R. M. Reddya, S. Chiragb, T. Anuc, A. R. Venkataramanand, S. Karthikeyane,*, D. Palaniswamyf, E. Venugopal Gouda, N. Dineshbabug, T. Thirugnanasambandhamh

    Chalcogenide Letters, Vol.22, No.7, pp. 615-624, 2025, DOI:10.15251/CL.2025.227.615

    Abstract Solar cells can transform light energy into electrical energy, possibly removing the need for fossil fuel energy resources. Reflection loss in solar cells is a factor contributing to diminished power conversion efficiency, which can be solved through using antireflective coatings on the cell surface. The present research primarily focuses on the development and application of antireflection coatings on the top surface of silicon solar cells. Sb2Se3 was deposited over multi-crystalline Si cells with different durations from 15 to 60 minutes. The influence of thin film Sb2Se3 coated cells was investigated through optical, current, voltage and thermal… More >

  • Open Access

    ARTICLE

    Structural, optical and electrical properties of NiO thin films for hole transport layer in chalcogenide and perovskite materials based solar cells

    M. Abbasa, M. Haseeb-u-Rehmana, M. Sohailb, G. H. Tariqa,*

    Chalcogenide Letters, Vol.22, No.7, pp. 561-577, 2025, DOI:10.15251/CL.2025.227.561

    Abstract This work presents the fabrication of NiO thin films via versatile sol-gel spin coating method and investigation of annealing effects on their physical properties. After the deposition process, the NiO thin films underwent annealing process at different values of temperatures ranging from 200°C to 350°C for one hour duration. XRD patterns confirmed the polycrystalline nature, along the preferred orientations (110) and (101) planes. Nanoparticles in NiO thin films demonstrated an increase in crystallite size with rising annealing temperatures, reaching a maximum size of 49 nm at annealing temperature 300°C. FTIR patterns revealed Ni-O bands at… 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

    Research on the Fabrication and Properties of Si3N4 Ceramic Radomes via Vat Photopolymerization (VPP)

    Jiamin Wu1,2,3,*, Zhicong Luo1,2, Fulin Zhou1,2, Qiwen Wang1,2, Weikang Li1,2, Weihao Cai1,2, Sen Su1,2, Lin Guo1,2, Chunsheng Ye1,2, Yusheng Shi1,2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.33, No.4, pp. 1-1, 2025, DOI:10.32604/icces.2025.011860

    Abstract Silicon nitride (Si3N4) ceramics with outstanding comprehensive properties, have become important candidate materials for components like radomes and antenna windows. In this study, the vat photopolymerization (VPP) technique was used to fabricate Si3N4 ceramic radomes. Our research centered on optimizing the curing properties of ceramic slurries and precisely regulating the comprehensive properties of the ceramics. Several methods were proposed to modify the curing depth of Si3N4 ceramic slurry, including thermosetting resin coating, sintering aid coating, oxidation coating, double coating, etc. Moreover, a pore-forming agent modification method was also proposed, which enabled the VPP printing of Si3N4 ceramic 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

    From Nature to Innovation: Exploring the Functional Properties and Multifaceted Applications of Seed Mucilage

    Livanshee Gupta1, Nouha Haoudi2,3,*, Lanjelina Oinam1, Ananya Mahajan1, Sonia Morya1,*

    Phyton-International Journal of Experimental Botany, Vol.94, No.9, pp. 2669-2700, 2025, DOI:10.32604/phyton.2025.065058 - 30 September 2025

    Abstract The trends of consuming or using eco-friendly, biodegradable products due to the change in the lifestyle of the people have led to the exploration of new sources from plants or animals. Seed mucilage (SeM) is an underexplored component of plants that can be brought into play to deal with such problems. Mucilage, a viscous polysaccharide that can be obtained when seeds like chia, flax, garden cress, and tomato get hydrated and form a slimy, gel-like substance around the seed coat, can be utilized due to its unique characteristics. It has been used in developing many… More >

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