Article
Materials Science, Multidisciplinary
Xubing Wei, Xueqian Cao, Pingmei Yin, Qi Ding, Zhibin Lu, Guangan Zhang
Summary: Superhydrophobic F&Si-DLC film deposited by reducing the pressure shows excellent and stable superhydrophobicity, offering the potential for drag reduction in water transmission. It has better mechanical properties compared to traditional organic superhydrophobic film.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Coatings & Films
Eun-Jae Lee, C. G. Jothi Prakash, Ji-Han Lee, Jeong-Soo Kim, Seong-Un Im, Yeon-Soo Kim, Jeong-Won Lee
Summary: The rapid development of nanoscale surface modification technology has led to the development of superhydrophilic, superhydrophobic, and slippery liquid-infused porous surfaces (SLIPS) in recent decades. These surfaces have excellent self-cleaning and anti-contamination performance, and many studies have reported their industrial applications. The surface modification of titanium remains challenging, but this study presents a significant advancement with a simple fabrication method that can be applied to large areas, complex shapes, or mass production, unlike existing methods.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Chemical
Csenge Vamos, Ilona Racz, Tamas Barany, Alfred Menyhard, Botond Bela Marosfoi
Summary: We have developed a new solvent-based method to roughen the surface of polymer and studied the treated polypropylene (PP). The method involves three main steps: solvent treatment, drying, and peeling. We investigated the impact of process parameters such as immersion time, solvent and drying temperature on surface morphology. The structure formed on the surface is mainly affected by the temperature of the solvent and drying. We also examined the wetting behavior of the surfaces. The patterned surfaces showed superhydrophobic characteristics with high contact angle (>155 degrees) and low water contact hysteresis (<5 degrees). The addition of an effective nucleating agent to PP allowed for exceptional contact angles (>160 degrees) and adjustable spherulite sizes. This method is straightforward and scalable, making it suitable for mass production of superhydrophobic materials.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Materials Science, Ceramics
Zhonghao Li, Runxun Liao, Runping Jia, Yufeng Liu, Xiaowei Xu, Jun Shen, Xiaodong Wang, Guangming Wu, Qingsheng Wu, Jichao Shi
Summary: Silica aerogels are promising materials with outstanding properties, but their application is limited by high cost and complex production processes. This study introduces a novel combustion drying method (CDM) for the synthesis of superhydrophobic silica aerogels, which offers significant advantages in terms of efficiency and cost. The proposed mechanism based on organic solvents combustion could be meaningful for future aerogel material design and production.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Lucas D. C. de Castro, Nelson M. Larocca, Osvaldo N. Oliveira Jr, Luiz A. Pessan
Summary: We have successfully prepared SiO2-based nanoparticles with stable superhydrophobic behavior using a special preparation method, which can maintain their functional properties for several months at room temperature.
Article
Mechanics
Sara Moghtadernejad, Mehdi Jadidi, Jack Hanson, Zachary Johnson
Summary: An experimental study investigates the impact of tangential velocity on the dynamics of a water droplet on a spinning superhydrophobic surface. The results show that increasing tangential velocity causes the droplet to spread asymmetrically. Three behaviors are observed depending on impact and tangential velocities: bouncing, symmetrical splashing, and asymmetrical splashing.
Article
Chemistry, Physical
Yuting Zhao, Tonghui Hao, Wei Wu, Yuan Meng, Xianwu Cao, Qunchao Zhang, Wei She, Jun You, Dean Shi, Tao Jiang
Summary: This work demonstrates an eco-friendly and robust superhydrophobic coating based on siloxane-modified hyperbranched waterborne polyurethane (Si-HBPU) and fluorinated silica nanoparticles (F-SiO2). The coating shows excellent water repellency and mechanical robustness, and is capable of maintaining superhydrophobicity even after sandpaper abrasion. Additionally, it exhibits outstanding anti-icing/deicing performance and scratch resistance, anti-fouling, and anti-corrosion properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Samir Kumar, Kyoko Namura, Motofumi Suzuki, Jitendra P. Singh
Summary: The study reports a hydrophobic Si nanospring surface that effectively suppresses wetting by repelling water droplets. The morphology of the nanostructures influences the impact dynamics, with Si nanosprings showing higher rebound time and coefficient of restitution compared to vertical Si columns. The study suggests that the nanosprings' restoring force may be responsible for the water-droplet rebound, and the bouncing phenomena could be helpful in designing self-cleaning surfaces and studying wetting behavior on nanostructures.
NANOSCALE ADVANCES
(2021)
Article
Nanoscience & Nanotechnology
Chuanqi Wei, Yakun Zong, Youhua Jiang
Summary: This study develops a surface called wire-on-pillar magneto-responsive superhydrophobic arrays (WP-MRSA) by mimicking lotus leaves, butterfly wing, and respiratory cilia. The surface possesses interfacial properties of structural superhydrophobicity, anisotropicity, stimuli responsiveness, and flexibility. The unique integration of structural properties and configurations enables various functionalities, benefiting applications such as droplet-based microfluidics and active self-cleaning surfaces.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Physical
Chen Yang, Qinghong Zeng, Jinxia Huang, Zhiguang Guo
Summary: Superhydrophobic surfaces with high water contact angles and low surface energy have great potential for droplet manipulation, especially in response to external stimuli. Recent research has shown promising results in this field.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Yuping Li, Jian Wang, Moqi Liu, Boting Pan, Rong Wu, Shangtao Zhang, Lang Liu
Summary: In this paper, a simple, low-cost, and environment-friendly method was used to prepare a superhydrophobic surface on hot-dip galvanized steel (HDGS). The structural, compositional, and morphological properties of the HDGS samples were characterized, and several tests were conducted to evaluate their hydrophobicity and corrosion resistance. The results showed that the proposed method successfully fabricated superhydrophobic HDGS surfaces with good corrosion resistance.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Polymer Science
Bo Wang, Xueqin Zhang, Guangquan Zhang, Yijie Liu, Yujun Guo, Song Xiao, Wenfu Wei, Guangning Wu
Summary: Due to their versatility, superhydrophobic materials have garnered significant attention in power electronics, transportation, engineering, and other fields. The volume fraction of fluorinated silicon oxide nanoparticles is a crucial factor in these materials. Increasing the volume fraction decreases the stability between the coating and the hydrophobic surface, resulting in a gradual decrease in flashover voltage and a significant increase in voltage dispersion after 30 vol.%. This study proposes a self-assembly strategy based on surface energy differences, utilizing boron nitride nanosheets and silicon oxide nanoparticles as a binary filling phase in the coating. Experimental results demonstrate the optimization of the superhydrophobic coating's flashover voltage using this binary filling phase coating, providing new ideas for filling phase selection and application of superhydrophobic materials.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Food Science & Technology
Antonia Susca, Pamela Anelli, Miriam Haidukowski, Crystal E. Probyn, Filomena Epifani, Antonio F. Logrieco, Antonio Moretti, Robert H. Proctor
Summary: By examining genome sequence data and identifying genetic markers indicative of two ochratoxin A (OTA) chemotypes in Aspergillus westerdijkiae strains, a polymerase chain reaction (PCR) method was designed to distinguish between the two chemotypes, potentially improving OTA monitoring programs.
INTERNATIONAL JOURNAL OF FOOD MICROBIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ankush Kumar Jaiswal, Sameer Khandekar
Summary: Investigation on multiple droplet interactions, specifically the collision between an oncoming droplet and a sessile droplet on a superhydrophobic surface, reveals different impact regimes and outcomes based on the Weber number of the impacting droplet. The study also emphasizes the critical role of shear stress generation, shape evolution of the droplets, and the influence of parameters like We number and substrate wettability in drop-on-drop interactions. The research provides insights into the mechanisms involved in various engineering applications such as pesticide spraying, spray cooling, and rain interactions.
Article
Chemistry, Multidisciplinary
Huimin Cao, Xi Guo, Yongdong Zhou, Yutao Yan, Weisheng Sun
Summary: Improving the hydrophobicity of precious hardwood was achieved through sanding pretreatment and alkyl ketene dimer (AKD) modification. The resulting wood showed high hydrophobicity, as confirmed by the contact angle measurements. The increased hydrophobicity was attributed to the ester bond formed between the wood hydroxyl groups and AKD, as well as the change in wood surface roughness. Additionally, the AKD-modified wood exhibited excellent water, acid, and toluene resistance, along with a self-cleaning effect.
