Articles tagged with Adhesion
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Researchers at Osaka University report heat-assisted plasma treatment can modify PTFE to improve its adhesive properties, making it suitable for medical procedures. The treatment recovers the surface layer, strengthening the adhesion between PTFE and rubber, allowing for stable and non-toxic lubrication.
A Korean research team develops high-performance silver nanowires with strong adhesion using flash light-material interactions. The Ag NWs demonstrate six times higher conductivity than pristine NWs, and their adhesion to substrates is enhanced by 310%.
Researchers have developed an electrografting approach to improve PEDOT adhesion, enabling longer lifespan and better performance of biomedical devices. The breakthrough enhances communication between devices and neural tissue, paving the way for more effective health interventions.
Researchers created an environmentally friendly, inexpensive coating made from PDMS that keeps surfaces ice-free with low ice adhesion strength of 5 kPa. This innovation could replace toxic liquid de-icers used on planes and cars, providing a permanent protective solution.
Researchers have developed a dry adhesive that bonds in extreme temperatures, offering properties for space exploration and electronics management. The gecko-inspired adhesive maintains strength in liquid nitrogen and molten silver, and even gets stickier with increasing heat.
A UC Riverside-led study found that a dwarf gecko's microscopic hairs allow it to cling to smooth surfaces, revealing the origins of gecko adhesion. The research suggests that small modifications can lead to complex adaptations, with implications for nanotechnology and biomimicry.
Researchers at Worcester Polytechnic Institute and the University of Massachusetts Dartmouth discovered flavonols in cranberry juice significantly reduce E.coli adhesion, which can cause bacterial infections. The findings may lead to new antibiotic drug targets and alternative treatments for 'superbugs'.
University of Illinois researchers have demonstrated doping-induced tunable wetting and adhesion of graphene, revealing its unique properties. The findings show that graphene can exhibit switchable hydrophobic and hydrophilic behavior, enabling the creation of reusable, self-cleaning sensors with potential energy savings.
Researchers developed an electrically switchable nanomesh that alters the contact angle of a drop of liquid, enabling precise control over adhesion and stiction. This breakthrough has potential applications in biology and technology, including controlling cell movement and flow resistance in capillary pumps.
Researchers have created a surface with switchable wetting and adhesion using a single layer of boron nitride. The surface can be made water-repellent or wettable by applying an electrical voltage, opening up potential applications in daily life and space travel.
Researchers have studied the amazing sticky weapon used by chameleons to capture their prey, revealing that it has a viscosity 400 times larger than human saliva. The combination of tongue morphology and viscous adhesion makes for an efficient adhesive system.
A new study identified a mechanism behind cardiovascular inflammation after a heart attack and developed a potential strategy to suppress it. The therapy targets molecules that attract immune cells to atherosclerotic plaques, reducing the risk of another heart attack and improving heart function.
Researchers at Max-Planck-Institute for Intelligent Systems have discovered a new reversible adhesive using gallium that can be controlled by temperature changes. The adhesive has potential applications in various fields such as biological samples handling and industrial pick-and-place processes.
Researchers developed a microfluidic platform to assess dynamic deformability and adhesion of red blood cells in controlled microphysiological flow. The study found that non-deformable RBCs have increased adhesion at high flow shear stresses, suggesting an interplay between deformability and adhesion.
A new type of underwater adhesive developed at UCSB replicates the adhesion strategy of the Sandcastle worm, which is robust in wet conditions. The synthetic glue promotes adhesion between various surfaces and is more resistant to cracking due to its porous structure.
Researchers developed a model to study adjustable adhesion power in rough, elastic surfaces. The study focused on the transition from weak to strong adhesion, revealing its importance in establishing contact.
Researchers at UC Santa Barbara have designed a synthetic material that combines the key functionalities of interfacial mussel foot proteins, creating a single, low-molecular-weight, one-component adhesive. This breakthrough technology demonstrates record-high wet adhesion up to 10 times more effective than previous materials, with app...
Researchers at UMass Amherst found that as geckos become larger, their bodies act like springs, becoming stiffer and enabling them to climb effectively. The team measured the adhesive ability of five species, finding a strong correlation between body size and stiffness.
Researchers identified the molecular mechanism behind H. pylori's adhesion protein using powerful x-rays, revealing a specific 'groove' that enables attachment to stomach sugars. This discovery could lead to the development of novel strategies to clear H. pylori from the stomach.
Patients suffering from symptomatic vitreomacular adhesion experience improved vision after receiving ocriplasmin injections, without undergoing surgical treatment. The non-surgical approach avoids risks and costs associated with surgery, making it an attractive option for preventing blindness.
Researchers discovered that cells in early embryos 'dance' as they compact, a process controlled by cell contraction. The study used new methods to measure forces and tensions within the embryo, revealing that adhesion acts as an anchor rather than an engine of compaction.
Researchers at the University of Pennsylvania have developed a new type of gripper that mimics the gecko's ability to grip and release surfaces. The gripper uses a composite structure with a hard plastic core and softer silicone rubber shell, allowing for tunable adhesion.
Scientists at the University of Manchester discovered that desmosomes achieve their strength through flexibility rather than rigidity. This finding has significant implications for understanding diseases such as sudden cardiac death and skin conditions.
A UC Riverside study found that geckos without an adhesive system evolved faster in terms of morphology and locomotion. This suggests that losing adaptations can be beneficial for the species, allowing it to occupy a new niche.
Researchers from UC Riverside have discovered that dead geckos can adhere to surfaces with the same force as living geckos, eliminating the need for active control. This finding has significant implications for robotics and other fields where adhesion is crucial.
A team of scientists has created a synthetic surface that can control the adhesion of E. coli bacteria using light. By switching on and off specific wavelengths, researchers can reverseorientate carbohydrate structures to influence bacterial bonding.
Researchers discovered that geckos can turn their toe hairs' stickiness on and off, allowing for speed and energy-efficient climbing. This mechanism is crucial for geckos' survival and enables potential applications in synthetic dry-adhesives for extreme environments.
Geckos can run up walls, cling to ceilings, and defy gravity due to their unique toe hairs called seta that turn sticky and non-sticky instantly. This 'smart' adhesion system allows geckos to achieve remarkable speeds and support massive weights.
Researchers found that local application of mitomycin C at low concentrations is safe to prevent scar adhesion following laminectomy without damaging peripheral nerve structures. However, high concentrations (> 0.7 mg/mL) may pose potential safety risks to peripheral nerves.
A team of researchers has developed a novel method for repairing soft-tissue organs and tissues using aqueous solutions of nanoparticles. In vivo experiments on rats showed that the method can close deep wounds rapidly without inflammation or necrosis, and successfully repair difficult-to-suture organs such as the liver.
Scientists explored how Staphylococcus cells adhere to nanostructures and found that surface features can inhibit bacterial adhesion. The researchers developed nickel nanostructures with various shapes, including tubular-shaped pillars, which showed higher bacteria survival rates.
Researchers have created magnetic replicas of sunflower pollen grains using a wet chemical process that applies highly conformal iron oxide coatings. The replicas exhibit both short-range van der Waals attraction and long-range magnetic adhesion, offering tailored multimodal adhesion to surfaces.
Researchers from the University of Akron discovered that wet, water-repellent surfaces secure geckos' grip similarly to dry surfaces. The study may inform future bio-inspired gecko-like adhesives for underwater applications.
Geckos keep firm grip in wet natural habitat by utilizing hydrophobic surfaces that stick similar to dry surfaces. Researchers developed a synthetic adhesive inspired by the ability of gecko pads to cling to wet and dry surfaces.
MIT researchers have developed a new method to study droplet adhesion using a modified scanning electron microscope. They found that the angle of a droplet's leading and trailing edges relative to a surface plays a crucial role in determining whether it sticks, and that surface texture on rough surfaces can either improve or worsen adh...
Researchers found that N. meningitidis adhesion to human microvessels leads to endothelial inflammatory response, clotting, thrombosis, congestion, and vascular leak, resulting in purpuric rash development. The study's findings challenge previous assumptions about the role of circulating bacteria and LPS release in vascular damage.
A new adhesive, iCMBAs, adheres well in wet environments, has controlled degradability, improved biocompatibility, and lower manufacturing costs. The bioahesives are non-toxic, control inflammation, and can be tailored to degrade over specific periods.
Researchers found that adding noise to a micro-textured surface can lower the energy barrier for an object to roll, mimicking gecko feet's adhesive properties. This study could lead to applications in gecko-inspired adhesives, tire adhesion, and digital operations.
A new quick-release medical tape minimizes skin tissue tearing upon removal, addressing a significant issue in neonatal care. The innovative three-layer design incorporates an anisotropic adhesive interface, allowing for strong adhesion and safe removal.
Researchers developed a glue mixture that can improve the safety of LASIK eye surgery by reducing the need for cornea transplants. The adhesive, made from fibrinogen and riboflavin, was tested on dogfish sharks and rabbits and found to be effective in keeping the cornea's flap in place.
Researchers at the University of Akron are studying geckos' foot pads to develop a synthetic adhesive that sticks when wet. The team hopes to create materials for surgical procedures and other applications where adhesion is crucial in wet environments.
The new process creates wrinkled surfaces with precise sizes and patterns, useful for microfluidic systems, sensing and diagnostics, photonic devices, and more. The system produces deterministic two-dimensional patterns of wrinkles without masks or complex printing processes.
Researchers developed a magnetically actuated peel test technique to measure adhesion strength between thin films in microelectronic devices, photovoltaic cells and MEMS. The fixtureless and non-contact method helps ensure long-term reliability and resistance to thermal and mechanical stresses.
Researchers create 'Geckskin' device with integrated adhesive and soft pad for easy attachment and detachment, enabling heavy everyday objects to be stuck to walls. The innovative material shows promise for medical and industrial applications.
Researchers at the University of Colorado Boulder discovered graphene's surprisingly powerful adhesion qualities, which could guide the development of graphene manufacturing and mechanical devices. The study showed that graphene's extreme flexibility allows it to conform to even the smoothest substrates.
Researchers found a thin layer of epithelial cells on healthy tendons that prevent adhesion formation. Mice with defective cells developed tendon adhesions, highlighting the importance of tissue surface integrity.
Researchers found extensive adhesions and inelastic muscles after using amniotic membrane to prevent postoperative scarring. The use of dried amniotic membrane, rather than frozen, may be the culprit behind these complications.
Researchers from Northwestern University and the University of Illinois created a square polymer stamp with pyramid-shaped tips to mimic geckos' micro- and nano-filaments. This allows for varying adhesion strength, enabling the transfer and printing of electronics on complex surfaces.
A probiotic strain, B. lactis HN019, attenuates IL-8 mRNA level and reduces pro-inflammatory responses in intestinal epithelial cells. It also internalizes into cells and excludes enteropathogen adhesion, contributing to homeostasis of the intestinal epithelium.
David A. Dillard has received the 2010 Award for Excellence in Adhesion Science from the Adhesion Society, credited with exceptional insight and research on bonded systems. His work focuses on developing test methods, analysis procedures, and durability studies for adhesive joints under various environmental conditions.
Researchers found that softer surfaces lead to disorganized cytoskeletons, while stiffer surfaces promote larger traction forces and more developed cadherin adhesions. Inhibition of myosin II decreases traction forces and causes cadherin adhesions to disappear.
A Cornell University team invented a palm-sized device that uses water surface tension as an adhesive bond, allowing it to stick and unstick to surfaces. The device has potential applications in shoes, gloves, and Post-it-like notes.
Researchers at Heidelberg University Hospital discovered that malaria parasites alternate between phases of rapid gliding and firm adhesion to surface. This 'stick-slip' mechanism enables the parasite to move rapidly over a long time, necessary for successful transmission of the disease.
Researchers discovered that sucker-footed bats of Madagascar use wet adhesion to attach themselves to surfaces, ruling out suction as the primary method. The finding helps scientists understand how these small creatures live in the wild and sheds light on the evolutionary relationship between two similar bat species.
A Henry Ford study found that pregabalin effectively reduced abdominal pain and improved sleep in women with adhesions, a common complication after abdominal or pelvic surgery. The study results suggest that pregabalin may be a viable treatment option for this painful condition.
Research uses bacteria to produce biofilm layers containing biopolymers that act as strong adhesives, resulting in better mechanical strength and surface coverage. The biocoating method could lead to improved bone implant materials with enhanced properties.
A team of MIT researchers has developed a new approach to designing stretchable electronics by studying the delamination of stickers, which can lead to damage in twisted materials. By controlling the strength of adhesion and elastic properties, they can create devices that allow wires to move with the material without breaking.
Weizmann Institute scientists have discovered that white blood cells use a unique method of movement, similar to millipedes, to crawl along the lining of blood vessels. The cells create tiny 'legs' that attach and detach in sequence, allowing them to move rapidly while keeping a good grip on the vessel's sides.
Researchers at Brown University have studied the swimming patterns of Caulobacter crescentus, a single-celled bacterium with a flagellum. The study reveals that drag and Brownian motion govern the circular swimming patterns of the microbe, which helps explain how bacteria scavenge for food and adhere to surfaces.
Researchers developed novel probe technology that replaces conventional AFM cantilevers, enabling fast topographic imaging, quantitative material characterization, and single molecule mechanics measurements. These probes can simultaneously measure material properties like adhesion, stiffness, elasticity, and viscosity.