Article
Chemistry, Multidisciplinary
Glen McHale, Rodrigo Ledesma-Aguilar, Chiara Neto
Summary: In 1948, Cassie proposed an equation for the wetting of a smooth, heterogeneous surface. This equation uses weighted averages based on the fractional surface areas and cosines of contact angles to predict the contact angle of a droplet on a composite surface. The equation has proven fundamental in understanding the wetting of superhydrophobic and superoleophobic surfaces. However, little attention has been given to the complete wetting of one surface component.
Review
Engineering, Multidisciplinary
Freshteh Sotoudeh, S. Mahmood Mousavi, Nader Karimi, Bok Jik Lee, Javad Abolfazli-Esfahani, Mohammad K. D. Manshadi
Summary: Self-cleaning surfaces, inspired by butterfly wings and lotus leaves, have various industrial applications such as manufacturing solar panels and glass. They can be used for oil-water separation in the petroleum industry, reducing cleaning time and cost while improving durability. Self-cleaning surfaces can be classified as hydrophilic and hydrophobic, with different cleaning mechanisms. Currently, water-repellent surfaces are more commonly used in self-cleaning technologies.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
T. P. Rasitha, C. Thinaharan, S. C. Vanithakumari, John Philip
Summary: A simple, scalable, rapid, and eco-friendly method for fabricating superhydrophobic titanium surfaces using rapid breakdown anodization (RBA) was developed. The desired hierarchical surface morphology for superhydrophobicity was achieved by controlling RBA process parameters and low surface energy modification using stearic acid (SA). The anodized samples showed excellent self-cleaning, adhesion, and abrasion resistance properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(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
Mechanics
Kai Sun, Lingyun Shu, Feifei Jia, Zhe Li, Tianyou Wang
Summary: Vibration on superhydrophobic surfaces is an effective method for removing droplets. This study experimentally investigated the dynamics of droplets on vibrating superhydrophobic surfaces and established a theoretical model to explain the physics behind droplet detachment caused by vibration. It was found that different droplet oscillation patterns exist and the critical condition for droplet detachment depends on the droplet energy compared to the surface adhesion energy. The study also revealed the impact of vibration frequency and amplitude on droplet detachment time.
Article
Chemistry, Physical
E. M. Can, A. Mufundirwa, P. Wang, S. Iwasaki, T. Kitahara, H. Nakajima, M. Nishihara, K. Sasaki, S. M. Lyth
Summary: The study explores the use of superhydrophobic fluorinated carbon powder as a novel material in MPL, reducing the required PTFE content and improving water management. It is confirmed that the fluorinated carbon MPL exhibits better oxygen transport performance at high humidity, and the fuel cell performance is consistently better than the conventional MPL under various conditions.
JOURNAL OF POWER SOURCES
(2022)
Article
Polymer Science
Patchararujee Ngamdee, Kotchamon Yimmut, Napida Hinchiranan
Summary: The research team prepared a superhydrophobic NR film with high water repellency and abrasion resistance through a two-step process, which showed no effect on the glass transition temperature and antimicrobial activity of the film. The film effectively inhibited the formation of bacterial biofilms and maintained high hydrophobicity for oil/water separation applications, with a high separation efficiency.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Nanoscience & Nanotechnology
Qiang Wang, Jarrett J. Dumond, Jarren Teo, Hong Yee Low
Summary: This study presents a hybrid approach combining experimental methods, numerical simulations, and machine learning algorithms to create design maps for superhydrophobic polymer topographies. Design objectives focus on investigating superhydrophobic properties by exploring nonlinear relationships between topographic design parameters and water contact angle (WCA) and Laplace pressure using artificial neural network models. The research demonstrates the potential of artificial neural networks as a rapid design tool for surface topography exploration.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Matti J. Hokkanen, Matilda Backholm, Maja Vuckovac, Quan Zhou, Robin H. A. Ras
Summary: Superhydrophobic coatings with unique properties such as self-cleaning and staying dry have recently emerged in industrial and consumer markets. The stochastic nature of coating components can affect the uniformity of water repellency, and traditional contact angle goniometry may not provide accurate quantification of wetting properties. The study demonstrates that highly sensitive force-based methods can offer advantages in quantifying microscale heterogeneity in superhydrophobic coatings.
ADVANCED MATERIALS
(2021)
Article
Engineering, Chemical
Salar Jabbary Farrokhi, Hossein Pakzad, Mohammadali Fakhri, Ali Moosavi
Summary: This study investigates the separation capacities of sponges sprayed with a superhydrophobic coating for a broad range of oils and solvents. Results show that the least dense sponge has the highest absorption capacity, while the absorption capacity varies erratically with the dynamic viscosity. In addition, the coated sponges maintain their superhydrophobicity after being subjected to extreme conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Hongfeng Li, Xiangwen Lin, Hongguang Wang
Summary: A nano-TiO2 superhydrophobic coating (PSC) was prepared to address water damage on asphalt pavement, demonstrating reduced occurrence of water-related issues and improved performance and durability of the pavement.
Article
Chemistry, Multidisciplinary
Eda Hazal Tumer, H. Yildirim Erbil, Numan Akdogan
Summary: In this study, superhydrophobic polylactic acid (PLA) surfaces with microstructured pillars were prepared using hot pressing and chemical vapor deposition methods. The wettability and morphology of the PLA patterns were investigated. The results showed that silane coatings containing a fluorine atom could significantly increase the water contact angle of the PLA surfaces, and the coated patterns exhibited excellent resistance and stability.
Article
Chemistry, Multidisciplinary
Pengchao Zhou, Tengda Hu, Yachen Xu, Xiang Li, Wei Shi, Yang Lin, Tao Xu, Bin Wei
Summary: In this paper, a superhydrophobic film with a structure similar to the surface of a lotus leaf was fabricated, and its superhydrophobic properties were enhanced by the introduction of F16CuPc modifier. The modification of F16CuPc was found to be the main reason for the enhancement of the film's superhydrophobic properties. Additionally, the stability of the film and the effects of UV and underwater immersion were investigated. This two-step fabrication method may be a potential direction for superhydrophobic surface fabrication due to its simple process, excellent superhydrophobic property, and favorable stability.
Article
Engineering, Chemical
Tongyan Ren, Yuechuan Wang, Xiaowei Fu, Liang Jiang, Anqian Yuan, Zhengkai Wei, Hualiang Xu, Jingxin Lei, Ping He, Yao Xiao
Summary: In this study, a superhydrophobic material was prepared from phosphogypsum, a solid waste of the phosphorus chemical industry, using a simple method with sodium metasilicate and stearic acid as chemical modifiers. The material showed low adhesion to water and high efficiency in separating oil/water mixtures, with high resistance to acidic solutions and repeated separations, showcasing potential for waste valorization through industrial solid waste.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Construction & Building Technology
Yipu Guo, Wengui Li, Wenkui Dong, Kejin Wang, Xuzhen He, Kirk Vessalas, Daichao Sheng
Summary: In this paper, a novel cement-based sensor with integrated self-sensing superhydrophobicity and self-cleaning functions was developed. The silane-treated cement-based sensor showed satisfactory stress/strain sensing performance and excellent hydrophobic behavior. The sensor also exhibited good self-cleaning performance, effectively removing stains.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)