Article
Materials Science, Multidisciplinary
Damiano La Zara, Fuweng Zhang, Feilong Sun, Maximilian R. Bailey, Michael J. Quayle, Gunilla Petersson, Staffan Folestad, J. Ruud van Ommen
Summary: The text discusses a surface nanoengineering method to tune the wettability of drug powders, from high hydrophilicity to superhydrophobicity, for inhaled drugs like budesonide. This allows for improved bioavailability and enhanced dispersion of formulations, showing the potential for controlling powder wettability in various pharmaceutical dosage forms.
APPLIED MATERIALS TODAY
(2021)
Article
Thermodynamics
M. J. Gibbons, A. Garivalis, S. O'Shaughnessy, P. Di Marco, A. J. Robinson
Summary: This study investigates the effects of electric fields on evaporating water droplets on a heated substrate, revealing that the electric fields influence the shape, mechanics, and heat transfer of the droplets. The results suggest that the electric fields exert different forces on droplets with different wetting states, leading to variations in droplet shape and behavior.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2021)
Article
Materials Science, Coatings & Films
R. Jagdheesh, J. Kopecek, J. Brajer, T. Mocek
Summary: It was found in the study that self-organised microspiked surface structures fabricated with a picosecond laser source on austenite stainless steel can reduce the surface free energy of metal oxides and achieve ultralow water adhesion surfaces after low-temperature treatment. The density and structure of nanoscale protrusions can be controlled by adjusting the number of pulses/spots and fluence, leading to superhydrophobic surfaces with high contact angles and low contact angle hysteresis.
SURFACE ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Lisa Schlichter, Florian Bosse, Bonnie J. J. Tyler, Heinrich F. F. Arlinghaus, Bart Jan Ravoo
Summary: Nanoparticles with unique properties are patterned onto unmodified silicon substrates using dip pen nanolithography. Different types of nanoparticles can be used for writing nanostructures, including hydrophilic citrate and cyclodextrin functionalized gold nanoparticles and poly(acrylic) acid decorated magnetite nanoparticles. The deposition process is fast and can be done within 0.1 s. The resulting feature sizes range from 300 to 1780 nm and the heights of the deposited structures correspond to a single or double layer of nanoparticles. Dip pen nanolithography offers a versatile method for patterning nanoparticles on silicon substrates.
Article
Materials Science, Composites
Ruijie Han, Zhijing Han, Xudong Song, Wei Cui, Jin Peng, Guangshuai Dong, Kangmin Niu
Summary: This study presents a simple method to prepare silicone rubber composites with excellent superhydrophobic properties using low-cost hydrophilic silica. The results show that uniform micro-nano structures are the key to the superhydrophobic properties of silicone rubber composites.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Jeong-Won Lee, Kihwan Kim, Giwon Ryoo, Jisu Kim, Jeyaraj Vinoth Kumar, Woonbong Hwang
Summary: A new SHPo/SHPi patterning method for three-dimensional objects using aluminum was proposed in this study, achieving successful realization of patterned surfaces with contact angles of 10 degrees for SHPi surface and 160 degrees for SHPo surface. This method enables patterning even in areas that laser light cannot reach, expanding the application scope of SHPo/SHPi surface patterning technique.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Chemical
Yeongwon Kwak, Ho Young Jun, Yonghyun Lee, Mankil Kang, Jeong Seok Oh, Sejung Kim, Young Hoon Song, Chang-Ho Choi
Summary: This study presents a facile method for fabricating superhydrophobic surfaces that meet the requirements of superhydrophobicity, durability, and multiprocessibility simultaneously. The developed coating suspension can be universally utilized in various coating processes, leading to easy integration of superhydrophobic surfaces.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Mechanics
Han Li, Han Chen, Er-Qiang Li, Chun-Yu Zhang, Hang Ding
Summary: The impact of a millimetric superhydrophobic sphere on a water pool covered by a thin oil layer is experimentally investigated. The interfacial tension and viscosity of the oil layer are found to significantly affect the fate of the impacting spheres, determining whether they sink or float.
Article
Materials Science, Paper & Wood
Chao-Hua Xue, Mi-Mi Du, Xiao-Jing Guo, Bing-Ying Liu, Ren-Xuan Wei, Hui-Gui Li, Meng-Chen Huang, Fu-Quan Deng, Shun-Tian Jia
Summary: The superhydrophobic photothermal conversion fabric, constructed by layer-by-layer self-assembly of carbon nanotubes on fibers and post-treatment with polydimethylsiloxane, exhibits high photothermal conversion capability and roughening structures on the fiber surface. It can rapidly heat up under sunlight, possesses excellent superhydrophobicity, stability to various substances, and self-cleaning property to ensure durability of photothermal conversion efficiency.
Article
Chemistry, Physical
Freshteh Sotoudeh, Reza Kamali, Seyed Mahmood Mousavi, Nader Karimi, Bok Jik Lee, Danial Khojasteh
Summary: This study investigates the dynamics of droplets impacting hybrid surfaces with varying wettabilities using a two-phase finite volume method. It is found that the maximum spreading factor for both Newtonian and non-Newtonian droplets is larger on surfaces with linear wettabilities, but minimal on stepwise wetting surfaces. The residence time of Newtonian droplets is longest on surfaces with a linear wettability distribution from hydrophilic to superhydrophobic, while for non-Newtonian droplets, it is longest on stepwise hydrophilic to superhydrophobic surfaces.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Xifan Fu, Qinpeng Zhu, Denghui Liu, Binghan Liu, Lintao Kuang, Yanhui Feng, Fuqiang Chu, Zhi Huang
Summary: A study on moisture condensation on hybrid superhydrophobic-hydrophilic surfaces revealed the significant impact of wettability difference and microstructure size on condensation efficiency, leading to a 90% enhancement in condensation rate. Detailed analysis of the condensation process provided insights into the enhanced condensation mechanism, proposing effective methods for controlling and optimizing moisture condensation.
Article
Multidisciplinary Sciences
Seung Woo Lee, Heyjin Cho, Choel-Min Jang, Myung-Soo Huh, Sung Min Cho
Summary: A simple sidewall patterning process for organic-inorganic multilayer thin-film encapsulation (TFE) has been proposed and demonstrated. The process involves adhesion lithography on an Al2O3 thin film grown by atomic layer deposition (ALD) using a self-assembled monolayer (SAM) pattern formed by a shadow mask. Sidewall patterning of multilayer TFE was achieved by repeating the adhesion lithography and vapor deposition of organic polymer and SAM patterns. The proposed process allows for the accurate patterning of blanket ALD-grown Al2O3 thin films using a predefined SAM pattern with a shadow mask.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Zhenping Bao, Aijun Zeng, Tong Gao, Yuxia Gao, Qianyi He, Yaoyuan Huang, Jingyu Chou, Lu Yu, Chenhui Zhang, Fengpei Du
Summary: Modifying the molecular structure is an effective strategy to regulate the impact behavior of surfactants on superhydrophobic surfaces.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Textiles
Solomon Tilahun Desisa, Eylen Sema Dalbasi, Ahmet Cay
Summary: The aim of this study was to produce superhydrophobic cotton fabric using TiO2 and SiO2 nanoparticles and polydimethylsiloxane (PDMS) through layer-by-layer deposition method. It was found that increasing the bilayer number and PDMS concentration improved the superhydrophobicity. Surface analysis showed the formation of roughness, and tests demonstrated high water and stain repellency values and durability to washing.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Chemistry, Physical
Nastaran Bakhtiari, Saeid Azizian, Babak Jaleh
Summary: In recent years, freshwater shortages caused by factors such as population growth and global climate change have become a major concern. Inspired by nature, water harvesting from atmospheric fog has gained significant attention as a solution to the freshwater supply problem. This study presents a facile physicochemical hybrid method to create glass surfaces with contrast wettability. The results demonstrate that the hybridization of superhydrophobic and hydrophilic regions, along with optimized pattern selection, can greatly enhance water harvesting performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)