Tunable Lotus Leaf Effect by Three-Dimensionally Printed Stretchable Objects DOI Creative Commons
Noa Trink, Shlomo Magdassi

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(46), P. 64276 - 64286

Published: Nov. 6, 2024

Adjustable wettability is important for various fields, such as droplet manipulation and controlled surface adhesion. Herein, we present high-resolution 3D stretchable structures with tunable superhydrophobicity, fabricated by a stereolithography-based printing process. The compositions comprise nonfluorinated monomers based on silicone urethane dispersed hydrophobic silica particles. lotus-like were designed printed, having microsize pillars located at the external surfaces, dimensions interspacing. design of presence particles resulted in superhydrophobicity due to structuring entrapment air between pillars. best display contact angle 153.3° ± 1.3° rolling 3.3° 0.5°, their self-cleaning, water repellency, buoyancy are demonstrated. durability structure over time, immersion, heat exposure tested, confirming preservation under these conditions. Upon stretching interpillar distances change, thus enabling tuning wetting properties achieving good control angles, while stretching-induced reversible. This approach can expand potential applications superhydrophobic soft materials fields requiring properties, including robotics, biomedical devices, electronics.

Language: Английский

Direct Ink Writing 3D Printing Polytetrafluoroethylene/Polydimethylsiloxane Membrane with Anisotropic Surface Wettability and Its Application in Oil–Water Separation DOI Open Access
Peng Geng, Chi Jiang

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 174 - 174

Published: Jan. 13, 2025

Biological surfaces with physical discontinuity or chemical heterogeneity possess special wettability in the form of anisotropic wetting behavior. However, there are several challenges designing and manufacturing samples wettability. This study investigates fabrication PTFE/PDMS grid membranes using Direct Ink Writing (DIW) 3D printing for oil–water separation applications. The ink’s rheological properties were optimized, revealing that a 60% composite exhibited ideal shear-thinning behavior printing. Our research investigated interplay between various parameters like extrusion air pressure, layer thickness, feed rate, speed, which found to influence filament dimensions, pore sizes, hydrophobic membrane. Two distinct structures analyzed their characteristics. achieved up 100% efficiency specific configurations. Separation was shown be dependent on factors intrusion architecture, number layers. underscores potential DIW creating specialized controlled wettability, particularly superhydrophobicity anisotropy, paving way advanced environmental applications such as efficient separation.

Language: Английский

Citations

0
Water Droplet and Its Contact Line Characteristics on Hydrophobic and Hydrophilic Surfaces: A Molecular Dynamics Simulation Approach DOI

Zahra Shamsi,

Masumeh Foroutan

The Journal of Physical Chemistry B, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

In literature, for a water droplet on solid surface, the set of points at intersection three phases, solid_ liquid_ gas, is referred to as triple phase contact line (TPCL). However, recent studies indicate that intersections these phases form region, which we refer vicinity (TPCV). present work, dimensions TPCV, including its width and cross-sectional area, have been calculated wide range hydrophilic hydrophobic surfaces, using molecular dynamics simulations. Additionally, behavior molecules, their presence frequency, velocity, displacement, has studied. The results that, surface becomes more hydrophobic, TPCV increases area decreases. frequency molecules located in equilibrium shows are arranged Gaussian distribution exhibit oscillatory movements around average positions. It also shown there moving toward center relative surfaces. Conversely, move wetting substrate Furthermore, velocity greater than substrate. On two velocities almost identical. Water surfaces faster all directions; however, they slower one direction. density profile highest reported droplet. contrast, due formation layers parallel substrate, closest layer surface. At end, considering importance graphene wettability behavior, recently attracted significant attention, investigations related reported.

Language: Английский

Citations

0
Recent progress in hydrophobic interfaces: Design, preparation, properties, and applications DOI
Kang Yang, Chao Wu, Hongliang Chen

et al.

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 45, P. 102621 - 102621

Published: March 7, 2025

Language: Английский

Citations

0
Tunable Lotus Leaf Effect by Three-Dimensionally Printed Stretchable Objects DOI Creative Commons
Noa Trink, Shlomo Magdassi

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(46), P. 64276 - 64286

Published: Nov. 6, 2024

Adjustable wettability is important for various fields, such as droplet manipulation and controlled surface adhesion. Herein, we present high-resolution 3D stretchable structures with tunable superhydrophobicity, fabricated by a stereolithography-based printing process. The compositions comprise nonfluorinated monomers based on silicone urethane dispersed hydrophobic silica particles. lotus-like were designed printed, having microsize pillars located at the external surfaces, dimensions interspacing. design of presence particles resulted in superhydrophobicity due to structuring entrapment air between pillars. best display contact angle 153.3° ± 1.3° rolling 3.3° 0.5°, their self-cleaning, water repellency, buoyancy are demonstrated. durability structure over time, immersion, heat exposure tested, confirming preservation under these conditions. Upon stretching interpillar distances change, thus enabling tuning wetting properties achieving good control angles, while stretching-induced reversible. This approach can expand potential applications superhydrophobic soft materials fields requiring properties, including robotics, biomedical devices, electronics.

Language: Английский

Citations

0