Article
Chemistry, Multidisciplinary
Lei Zhou, Wen He, Miao Wang, Xu Hou
Summary: This study presents the design of a carbon nanotube array-based phase-change heat-transfer surface that can switch its wettability between superhydrophobicity and superhydrophilicity. The surface allows independent adjustment of wettability to adapt to different heat-transfer requirements, enhancing condensation and boiling heat transfer performance.
Article
Chemistry, Physical
Zhixiong Song, Eric Shen Lin, John Zhu, Jian Wern Ong, Hassan Ali Abid, Md Hemayet Uddin, Oi Wah Liew, Tuck Wah Ng
Summary: Superhydrophilic surfaces made by depositing graphene oxide on PVC substrates show zero contact angle initially but develop a contact angle over time. The spreading main contact line of EGFP drops is more easily visible under normal lighting conditions compared to blue LED lighting.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Haidong He, Wenrong Wu, Zijie Xi, Zhenwu Ma, Liudi Zhang, Chunju Wang, Lining Sun
Summary: This study utilized nanosecond laser and post-annealing, silanization techniques to modify the Ti6Al4V surface, achieving smooth surfaces with gradient wettability and superhydrophilic surfaces with gradient roughness. By further treatment, various superhydrophobic surfaces were achieved. The wettability stability of these surfaces in different environments were evaluated, and the related mechanism was discussed.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Thabang Mokoba, Zhikai Li, Tian C. Zhang, Shaojun Yuan
Summary: A novel high-performance superwetting material was developed with great potential in efficient removal of insoluble and soluble organic contaminants from oily wastewater.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Zihang Liang, Qingwei Wang, Dongkai Chu, M. Jahanzaib Naqvi, Shuoshuo Qu, Jun Huang, Peng Yao
Summary: In this study, we developed an efficient and simple method to process heterogeneous surfaces on aluminum for fog harvesting and seawater desalination. The surface consists of regular periodic stripe structures with superhydrophilicity and superhydrophobicity, exhibiting improved efficiency in fog harvesting and high evaporation rate under solar irradiation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Zihang Liang, Qingwei Wang, Dongkai Chu, M. Jahanzaib Naqvi, Shuoshuo Qu, Jun Huang, Peng Yao
Summary: This article reports an efficient and simple method to process heterogeneous surfaces on aluminum, combining picosecond laser processing and chemical treatment. The resulting surfaces exhibit superhydrophilicity and superhydrophobicity and show high efficiency and evaporation rates in fog harvesting and seawater desalination, offering a promising solution to the water shortage problem.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Fangyuan Ren, Rui He, Jinping Ren, Furong Tao, Huanhuan Yang, Hongshui Lv, Xiuqin Ju
Summary: This article introduces a fluoride-free UV-responsive material for oil/water separation and dye degradation. Environmentally friendly and low cost materials such as cellulose, silicon dioxide, titanium dioxide, and stearic acid were used to fabricate a superhydrophobic coating that can transition from superhydrophobic to superhydrophilic under UV irradiation. The coated cotton fabric can effectively separate oil/water mixtures and emulsions.
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2022)
Article
Chemistry, Physical
Jiangyou Long, Yan Li, Ziqing Ouyang, Mingjie Xi, Junwei Wu, Jinghao Lin, Xiaozhu Xie
Summary: Micro/nano-textured metal or metal oxide surfaces undergo a wettability transition from superhydrophilic to hydrophobic when exposed to ambient air. This transition affects surface evaluation and performance. A solvent cleaning method is proposed to restore the superhydrophilicity while maintaining the surface morphology and composition. Dense surface nanostructures delay the wettability transition by suppressing organic molecule diffusion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Dongjie Zhang, Qixing Xia, Hua Lai, Zhongjun Cheng, Pengchang Liu, Haiyang Zhang, Yuyan Liu, Lei Jiang
Summary: This study demonstrates a dual-stimulus-responsive strategy for synergistically stimulating surface chemistry and microstructures to achieve controllable wetting properties from superhydrophilicity to super-hydrophobicity. By adjusting the surface microstructure and chemistry, the wetting of the surface can be reversibly and precisely controlled, showing promise for applications in various fields such as adaptive liquid microlenses, drug release, and selective catalysis. The work proposes new expectations for designing smart functional surfaces.
SCIENCE CHINA-MATERIALS
(2021)
Article
Optics
Simonas Indrisiu Nas, Mindaugas Gedvilas
Summary: In this research, the possibility of using parallel laser processing by a multi-beam array was investigated for controlling the characteristics of the stainless steel surface. It was found that by adjusting the combination of texture depth, surface chemical properties, and laser-induced surface ripples, superhydrophobic surface properties can be obtained. Moreover, by changing the texture period to control the self-organized surface structure shape, a broad spectrum of wetting states can be achieved.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xudong Zhang, Shuang Ben, Zhihong Zhao, Yuzhen Ning, Qiang Li, Zhiyun Long, Cunming Yu, Kesong Liu, Lei Jiang
Summary: This study reports an efficient strategy for lossless and directional oil and water droplet transport using a V-shaped underwater superoleophobic rail and a V-shaped superhydrophobic rail. The kinetic energy of impacting droplets is converted into planar motion by the V-shaped rail, while the droplet deformation creates a 3D Laplace pressure difference for directional droplet movement. The superoleophobic and superhydrophobic wettability of a copper rod surface is crucial for achieving lossless droplet transport due to low adhesive forces. The applications of this V-shaped rail extend to droplet sensors, microchemical reactions, droplet-based electricity generators, and water/oil separation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Mechanical
Lu Tie, Weimin Liu
Summary: Superwetting properties with multiple superlyphobic states have unique advantages in specific interfacial applications. However, there is currently a lack of systematic research on fine controlling superwetting surfaces. Controllable fabrication of superoleophobic surfaces from superhydrophilicity to superhydrophobicity in oil is still a challenge due to the harsh conditions involved.
TRIBOLOGY INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Shan Zhou, Lei Jiang, Zhichao Dong
Summary: This article reviews the evolution of overflow phenomenon and the mechanisms of surface wetting properties and microstructure-controlled liquid overflow. It also summarizes the latest progress in utilizing these mechanisms for liquid dynamics control and sustainable development, along with challenges and perspectives.
Article
Nanoscience & Nanotechnology
Naoki Fukata, Wipakorn Jevasuwan, Yong-Lie Sun, Yoshimasa Sugimoto
Summary: Control of surface defects and impurity doping is crucial for semiconductor nanowires-based devices. In this study, p-Si/i-Ge core-shell nanowires with radial heterojunctions were fabricated to suppress impurity scattering. Heat treatment to repair surface damage and oxidation and chemical etching prior to shell formation reduced the surface roughness and diameter of the nanowires. Furthermore, hole gas accumulation was observed in the i-Ge layers, which is important for suppressing impurity scattering.
Article
Chemistry, Multidisciplinary
Ndidi L. Eyegheleme, Viverjita Umashankar, Danielle N. Miller, Arun K. Kota, Jonathan B. Boreyko
Summary: Researchers demonstrate a new method of oil-water filtration using a synthetic tree powered by transpiration. The synthetic tree generates suction through evaporation and consists of a nanoporous leaf, vertical glass tubes acting as xylem conduits, and filters attached to the tube inlets. Testing shows that the synthetic tree can achieve oil-water separation with filtrate samples measuring 97-98% pure water. This innovation has potential applications in oil spill cleanup, wastewater purification, and oil extraction.
