Article
Chemistry, Physical
Mohamadreza Beitollahpoor, Melika Farzam, Noshir S. Pesika
Summary: Dynamic friction measurements provide a more accurate characterization of the wetting properties of superhydrophobic surfaces compared to contact angle and sliding angle measurements. The force-based technique reduces standard deviations and provides higher accuracy in determining sliding angles and stability transitions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yujie Wang, Boce Zhang, Hanna Dodiuk, Shmuel Kenig, Carol Barry, JoAnn Ratto, Joey Mead, Zhen Jia, Sevil Turkoglu, Jinde Zhang
Summary: This study found that protein solutions significantly weaken the stability of air plastron (AP) on superhydrophobic (SHP) materials, mainly due to the surface tension of protein solutions and protein adsorption on SHP substrates.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Nehar Ullah, Mahnoor Zafar, Hizbullah Malik, Kamran Zaman, Muhammad Raheej, Irshad Ali, Muhammad Younas, Mohammad Jafar Molaei, Mashallah Rezakazemi
Summary: The current study focuses on fabricating and characterizing super-hydrophobic thin-film coatings using synthetized and functionalized Si-NPs, with PVA-associated coatings showing the best results in terms of superhydrophobicity and durability. Characterization techniques such as SEM, AFM, and XRD were utilized to analyze the topographical and morphological characteristics of the coatings, demonstrating the homogeneous application of Si-NPs thin films.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Automation & Control Systems
Daniel Gortat, Alejandro Ortega Ancel, Andre Farinha, Raphael Zufferey, Mirko Kovac
Summary: Aerial-aquatic robotic vehicles have great potential in disaster response and environmental monitoring, but they face challenges in power requirements for takeoff and transitioning between air and water. The use of superhydrophobic surfaces can address these challenges by reducing the wetted surface area. This article analyzes various superhydrophobic surfaces to assess their benefits in drag reduction for aerial-aquatic robotic vehicles.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Article
Chemistry, Physical
Ziyang Chang, Yan Lu
Summary: This study investigated the influence of different microstructures on the wettability of metal materials and proposed an optimized structure to improve the solid-liquid-gas three-phase contact state. Experimental results showed that the concave structure exhibited the best hydrophobic effect, and the pit structure increased the contact area between air and liquid droplets. Through simulation analysis, it was determined that the pit structure with a certain concave radian was more likely to achieve the Cassie-Baxter state, resulting in better hydrophobicity of the metal surface.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Mahdi Ebrahimi, Amir Bayat, Saeed Rahemi Ardekani, Esmaiel Saievar Iranizad, Alireza Zaker Moshfegh
Summary: In this study, the stability of the Cassie-Baxter state was investigated on branched hierarchical ZnO nanowires (BH-ZnO NWs) compared to ZnO nanowires (ZnO NWs) through theoretical and experimental approaches. The results indicated that the BH-ZnO NWs sample exhibited higher CB stability due to the presence of hierarchical nanostructures when compared to the ZnO NWs sample.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Kyujin Ko, Donghyun Yoon, Su Chul Yang, Heon Sang Lee
Summary: Superhydrophobic silica coating layers with high contact angle, high light transmittance, and strong weather resistance were developed using three strategies, demonstrating potential applications in industrial coating.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Sarah Marie Loesslein, Frank Mucklich, Philipp G. Gruetzmacher
Summary: The wetting characterization and production of engineered surfaces with distinct contact angles or spreading behavior have significant importance in various industrial and scientific applications. The wetting behavior and droplet spreading on anisotropic surface patterns are highly dependent on both surface topography and chemistry. The study demonstrated that the combination of surface chemistry and directional patterns can result in anisotropic wetting behavior.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Maryam Ghaedi, Nasir Mehranbod, Mohammad Khorram
Summary: Porous superhydrophobic materials with high mechanical stability, developed using a polyurethane sponge coated with poly (dopamine) and silica, demonstrate strong hydrophobic coating adhesion and excellent oil-water separation performance. The modified sponge shows a water contact angle of approximately 156.2 degrees & PLUSMN; 5 degrees, and can absorb up to 43.3-51 times of its initial mass from an oil-water mixture. The hydrophobicity and absorption capacity of the modified sponge are preserved even after undergoing multiple cycles of oil-water separation and chemical cleaning.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Physical
Sreya Sarkar, Tamal Roy, Ankit Roy, Shashwata Moitra, Ranjan Ganguly, Constantine M. Megaridis
Summary: This study investigates the impact of surface roughness on contact angle measurements through experiments and theoretical models. As the surface roughness increases, the dynamic contact angles measured by different methods deviate from the supplementary principle. A theoretical explanation is provided for this disparity, with predictions based on prevalent thermodynamic models of wetting and contact-angle hysteresis on rough substrates.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Gunwoo Kim, Kyuin Park, Sungho Jin
Summary: The study demonstrates the preparation of a superhydrophobic polystyrene surface through a convenient synthesis method, which exhibits multiple stabilization wetting points and achieves superhydrophobicity through hierarchical roughness.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
K. Maghsoudi, G. Momen, R. Jafari
Summary: We fabricated hierarchical superhydrophobic silicone rubber surfaces using a direct replication method. Surface roughness ratios and equilibrium contact angles were calculated, and the contribution of submicrostructures on wettability properties was considered. Comparison between theoretical predictions and experimental measurements showed good agreement, providing valuable insights for the design and fabrication of superhydrophobic surfaces.
APPLIED MATERIALS TODAY
(2023)
Article
Polymer Science
Zhiqian Wang, Sumona Paul, Louis H. Stein, Arash Salemi, Somenath Mitra
Summary: Superhydrophobic surfaces have promising applications in the medical field, especially in blood-contacting devices. These surfaces can control cell-surface interactions, facilitate blood or plasma flow, and resist biofouling. Researchers have developed methods to fabricate blood-compatible or biocompatible superhydrophobic surfaces using different materials, making them ideal for clinical applications.
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
Chemistry, Physical
Kaijian Huang, Ruiyu Sun, Jiaqing Wang, Xijun Shi, Hechang Lei
Summary: Superhydrophobic coating ice suppression technology has great potential for application on pavements. This study investigated a novel superhydrophobic coating specifically designed for pavement surfaces to address questions about its active anti-icing capabilities in a condensing environment. The findings showed that the proposed coating effectively prevents condensate droplets from infiltrating the surface structure, delaying surface icing and reducing ice attachment strength.
