Articles tagged with Superhydrophobicity
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Researchers at the University of Rochester create a new process to turn ordinary metal tubes unsinkable by etching micro- and nano-pits on their surface, making them superhydrophobic. The tubes stay afloat in water, even when damaged or submerged for extended periods.
Researchers have developed a novel pesticide delivery system using Liquid Marbles (LMs) that can enhance droplet deposition on plant surfaces. The LMs, coated with biodegradable hydrophobic particles, follow a unique mode of deposition that increases wettability and reduces waste, up to 50%.
Researchers from Aalto University have created a synthetic surface inspired by lotus leaves and found that plastronic waves travel along the surface at speeds up to 45 times faster than capillary waves. The discovery could lead to new applications in biotechnology, materials science, and pharmaceuticals.
Researchers create superhydrophobic array device (SHArD) mimicking the lotus leaf surface structure, enabling high-throughput generation of three-dimensional nanoscale tumor models. This platform helps study metastasis and primary tumors, shedding light on cancer progression.
Researchers create bioinspired directional structures to inhibit the wetting of molten droplets on super-melt-philic surfaces at high temperatures. The structures provide anisotropic energy barriers, hindering the movement of water and preventing wetting.
Researchers from Aalto University have identified the previously unidentified physics at play when water droplets move on superhydrophobic surfaces. By adapting a novel force measurement technique, they eliminated the drag-like force and proposed a solution to improve the performance of hydrophobic surfaces.
A team of researchers has developed a stable, long-lasting superhydrophobic surface with a plastron that can last for months underwater. The surface repels blood and prevents the adhesion of marine organisms, making it valuable for biomedical applications such as reducing infection after surgery.
Scientists create a design that enables simultaneous presentation of photothermal, thermal conductive, and superhydrophobic properties, achieving record-high defrosting efficacy. The innovative assembly enhances de-icing and defrosting efficiency, reducing overall defrosting durations by 2-3 times.
A team of engineers at Brown University discovered that drag on partially submerged objects can be three or four times greater than on fully submerged objects. The study found that the level of water repellency plays a key role in drag forces, with superhydrophobic materials encountering more drag.
The researchers developed an extreme wettability surface that enables controlled evaporation, directional bouncing, and transport of droplets on it. The surface can be used to study biochemistry, microfluidic systems, cell culture, and energy harvesting and utilization.
Researchers have created a new slippery surface, LICS, that can rapidly generate surface charges and regenerate its state upon exposure to near-infrared radiation. This allows for precise control over droplet manipulation in various applications, including biomedical domains.
Rice University researchers create a technique to make surfaces superhydrophobic by combining sanding with powder materials, resulting in water-repelling properties. The treatment also exhibits excellent anti-icing properties, slowing down freezing and reducing ice adhesion strength.
Researchers at UCF's NanoScience Technology Center created a new nanomaterial that repels water and stays dry even when submerged underwater. The discovery has the potential to develop more efficient water-repellent surfaces, fuel cells, and electronic sensors.
Researchers at Aalto University have developed a technique to guide bacterial colonies into creating highly customized three-dimensional objects made of nanocellulose. The objects show great potential for medical use, including supporting tissue regeneration and replacing damaged organs.
Researchers have developed biphilic surfaces that significantly improve defrosting efficiency on heat exchangers. The unique surface design enables the removal of frost and slush from superhydrophobic regions before complete melting, reducing cleaning time and energy consumption.
Researchers at Aalto University have created an armour-plated superhydrophobic surface that can withstand sharp and blunt objects while maintaining its world-record effectiveness in repelling liquids. The surface features a honeycomb-like structure of tiny inverted pyramids, protecting the fragile chemical coating from damage.
Researchers at the University of Bonn have developed an environmentally friendly technology to remove oil from water. Textiles with special surface properties passively skim off the oil and move it into a floating container without using chemicals.
Physicists have made significant breakthroughs in understanding how liquids behave with other materials, including finding super-repellant substrates that can repel water. Their findings provide a comprehensive framework for tailoring material properties, which has important implications for various physical and biological systems.
Scientists have created a durable and flexible super-water-repelling material by drawing inspiration from the spiky yet flexible skin of the porcupinefish. The material retains its water repellency after being repeatedly bent or twisted, making it suitable for applications such as self-cleaning, anti-icing, and corrosion prevention.
A team of researchers at Texas A&M University has developed a way to control the hydrophobicity of surfaces inspired by nature, which could have widespread applications in the biomedical field. The 'nanoflower' design uses atomic defects in nanomaterials to repel water and clean surfaces.
Using superhydrophobic surfaces and vertical condensers, the team found that combining surface tension and gravity increases condenser efficiency. This method sheds moisture more efficiently than relying solely on jumping droplets or gravity, benefiting power plants and other heat exchange systems.
Carlex Glass America has licensed Oak Ridge National Laboratory's superhydrophobic coating technology to improve driver visibility and safety in inclement weather. The coating enables water to bounce off, reducing light reflection and fingerprints.
Researchers at Purdue University have discovered that superhydrophobic materials can boil water efficiently when air and vapor are removed from the system. This breakthrough enables highly effective boiling, allowing for improved cooling of high-power electronics and enhancing thermal management technologies.
Researchers created a new coating technology that allows for better control over the flow of water on superhydrophobic materials. By etching paths into coatings, scientists were able to guide water droplets along designated paths without leaving behind a wet trail.
Aalto University researchers developed Scanning Droplet Adhesion Microscopy (SDAM) to understand and characterize the wetting properties of superhydrophobic materials. The microscope is 1,000 times more precise than current techniques, enabling the creation of wetting maps that reveal microscopic defects on surfaces.
Researchers studied cicada wings to understand their water-repelling ability, discovering that habitat is not a good predictor of superhydrophobicity. The team found that life cycles and species relatedness are better predictors of this extreme water-repelling ability.
Scientists have developed a method to defrost surfaces 10 times faster than normal using a superhydrophobic coating. The 'dynamic defrosting' technique involves creating air pockets under frost, allowing it to slide off easily and leaving the surface dry.
Rice University scientists discovered that laser-induced graphene can be made either superhydrophobic or superhydrophilic by adjusting the gas used in its formation. This property allows for applications such as separating water from oil and de-icing surfaces.
Scientists have developed a water-repellent material that molts like a snake's skin when damaged, revealing another hydrophobic layer beneath. This material has the potential to be used in various applications such as rain gear, medical instruments and self-cleaning car windows.
Researchers at University of Michigan developed a self-healing, water-repellent coating that's hundreds of times more durable than its counterparts. The coating can heal itself chemically and physically, making it ideal for applications like waterproofing vehicles, clothing and ship hulls.
Researchers at Pohang University of Science and Technology have developed an environmentally friendly method to apply a superhydrophobic layer using commercially available salt particles, polydimethylsiloxane, and water. This coating exhibits ultrahydrophobic characteristics similar to the 'lotus effect', allowing for applications in a...
Scientists investigate how water flows near superhydrophobic surfaces, finding that liquids can exhibit unusual properties like hydrodynamic slip. The research uses an atomic-force microscope to measure the slip length and develop new theories for these systems.
Researchers at Colorado State University have developed a superhydrophobic coating made from edible waxes, allowing liquids to be easily slicked away. The coating is nontoxic and safe for use in food packaging.
Droplets on a surface can catapult away contaminants without superhydrophobic coatings, inspired by pogo jumping. Researchers at Duke University and the University of British Columbia investigate this mechanism to develop more durable self-cleaning systems.
Aalto University researchers propose a standardised method for testing the wear and durability of superhydrophobic materials, including linear abrasion. They also emphasize the need to measure droplet mobility to assess the surface's robustness.
Researchers at Rice University and Swansea University have developed a new class of superhydrophobic nanomaterials that are inexpensive, nontoxic, and can be applied to various surfaces via spray- or spin-coating. The coating is equivalent in performance to commercial coatings that employ hazardous fluorocarbons.
Physicists from Lomonosov Moscow State University develop theory for creating artificial turbulence in microchannels using superhydrophobic surfaces. The approach enables efficient mixing and separation of liquids, promising applications in chemistry and biomedical research.
Researchers at Oak Ridge National Laboratory have developed a superhydrophobic glass coating that can be customized to repel water, fog, and dirt, while also suppressing light reflection from glass surfaces. The coating has potential applications in solar panels, lenses, optical instruments, and other products.
Researchers have found that properly designed rough surfaces can reduce skin-friction drag in turbulent conditions. The study models fluid flow between two surfaces covered with tiny ridges, which trap air bubbles and create a hydrodynamic cushion.
Researchers at Brookhaven National Laboratory discovered that cone-shaped nanotextures produce significantly better water-repellency than cylindrical pillars. The unique shape prevents the contact line from getting pinned to the nanotexture, keeping surfaces dry even under pressure.
Scientists from Aalto University and Paris Tech have created a new model system for reversible switching between static and dynamic self-assembled structures. By using periodically oscillating magnetic fields, they demonstrated that droplet patterns can transform into more complex and dynamic ones.
Researchers discovered cicadas can use jumping droplets to remove contaminants from their wings, offering an alternative to conventional self-cleaning methods. This phenomenon works without relying on external forces or gravity.
Researchers propose a continuum-based model that illustrates contact line pinning at phase interfaces between materials, differing from traditional Wenzel and Cassie models. The study shows the macroscopic contact angle depends solely on the triple contact line's properties.
Researchers at the University of Pennsylvania have developed a method to generate structural color and superhydrophobicity in materials. By using holographic lithography and poor solvents, they can create 3D networks that produce bright colors and repel water.
A new concept for computing uses water droplets as digital information bits, demonstrating rebounding collisions on superhydrophobic surfaces. This enables the development of memory devices and elementary Boolean logic operations.
Researchers studied the water boatman's hind wings, which exhibit superhydrophobicity, playing a crucial role in its swimming, breathing, and balance. The study reveals that the insect's wing surface contains low surface energy materials, creating a hierarchical structure that enables it to swim freely and escape easily from water.
BWH researchers created a new method for controlled drug release utilizing air as a removable barrier. The rate of drug release correlates with the removal of the air pocket, enabling extended periods of controlled delivery.
The study reveals a miniature version of the 'water hammer' effect, which causes pressure spikes in water droplets on textured surfaces. This insight could lead to the design of more effective superhydrophobic surfaces for various applications, including energy efficiency improvements.
Dr. Chang-Hwan Choi has been recognized with the Young Investigator Program award for his work on efficient anti-corrosion surfaces. His research focuses on nano-engineering of superhydrophobic surfaces to enhance durability and functionality in light metal applications, addressing significant corrosion protection needs for the U.S. Navy.
Brookhaven National Laboratory scientists have created a super nonstick surface that repels water due to the presence of nanobubbles. The surface was made by creating a regular array of nano-cavities on an otherwise flat surface, which traps tiny air bubbles and prevents water from wetting it.
Researchers capture high-speed footage of tiny water droplets jumping off a man-made surface, similar to the ejection of spores from certain mushrooms. The phenomenon has applications in energy harvesting and thermal management, offering an efficient mechanism for removing condensate.
The study reveals that the hydrophobicity of NOCTUIDAE moth wings is induced by the multivariate coupling of shape, structure, and biomaterials. The hierarchical rough structure on the wing surface enhances surface hydrophobicity, allowing it to repel rainwater, dew, and dust.
Scientists at Arizona State University have developed a simple way to make colorful nanocrystals using colloid chemistry methods. The process involves placing nanoparticles in a drop of water on a superhydrophobic surface and letting it dry, resulting in opalescent colors. This method has the potential to create new materials for photo...