Articles tagged with Adhesion
Researchers from Terasaki Institute for Biomedical Innovation develop methods to enhance mechanical properties of hydrogels, including toughness, stretchiness, and adhesive strength. By introducing dopamine and alkaline conditions, they create gel-like materials with improved biocompatibility and regenerative capabilities.
SUTD researchers developed a liquid metal antenna that can conform to soft biological tissues, addressing the mechanical mismatch at the tissue-device interface. The antenna demonstrated high wireless powering efficiency and stability under extreme deformations, making it suitable for implantable devices in hard-to-reach lesions.
A new adhesive, inspired by barnacles' sticky substance, can form a tight seal within seconds of application on wet surfaces, including blood-covered tissues. This bio-inspired tissue glue shows promise in rapidly controlling bleeding and may offer a more effective treatment for traumatic injuries.
Researchers developed a bio-inspired hydrogel to prevent post-operative adhesions in the heart, with promising results in rats and pigs. The hydrogel creates a protective barrier while allowing for movement and is designed to be easily removable and dissolveable.
Researchers from POSTECH and KNU analyze Dopa and lysine, revealing their roles in surface adhesion and cohesion. The study confirms negative synergy between Dopa and lysine, offering promise for designing new adhesive materials.
Adhesions form after inflammation or surgery and can lead to chronic pain, digestive problems, infertility, and life-threatening consequences. Researchers have discovered that macrophages play a key role in their development and have developed a new imaging system to visualize them.
An international team of researchers solved a puzzling phenomenon involving vortex-like structures in the Cold Spray deposition process. The discovery, published in Materials & Design, reveals that these structures form when the CS process has low deposition efficiency, leading to improved adhesion between coatings and substrates.
Researchers developed a novel Biomesh that captures positively charged cytokines, reducing inflammation and tissue adhesion in hernia repair. The new mesh effectively minimized postsurgical complications in an animal model, improving outcomes and reducing symptoms.
Functional hydrogel coatings have various functions, including sensing, actuation, drug delivery, and conductivity for neural electrodes. Research directions include optimizing coating methods for mass production, long-term stability, and testing adhesion.
Researchers at Duke University have discovered that astrocytes play a crucial role in governing connections between neurons. The star-shaped cells form the glue-like framework of the brain and regulate inhibitory synapses by binding to neurons through an adhesion molecule called NrCAM.
A new wearable piezoelectric harvester using hot pressing and tape casting fabrication process has record high interfacial adhesion strength, enabling durable wearable devices. The study uses a surface and interfacial cutting analysis system to measure adhesion strength.
Researchers found that Nicotiana promotes tissue adhesion and maintains grafts with a broad range of species. The study successfully grafted a tomato scion onto a Florist's daisy rootstock, producing a small fruit.
Researchers develop Salvinia-like slippery surface with stable water/air contact line, exhibiting increased stability against pressure and impact. The surface also enhances the mobility of water drops and reduces hydrodynamic drag.
A new study reveals how remora suckerfish detach themselves from surfaces and explores the application of this mechanism in underwater robots. The research team developed a biomimetic flexible adhesive disc with controllable motion, which showed similar detachment motions to its biological counterpart.
A new method of making gecko-inspired adhesive materials has been developed, enabling mass production and the spread of versatile gripping strips. The materials can be used to make extremely versatile grippers that pick up different objects on the same assembly line.
Researchers at Hokkaido University and Kao Corporation discovered that bound water on cotton surfaces causes cross-linking between single fibers, leading to stiffness. The study used atomic force microscopy and infrared spectroscopy to investigate the bound water's unique properties.
Researchers at Michigan Technological University have created an underwater smart glue prototype that can be activated and deactivated using electricity. The team, led by Bruce Lee, used electrical current to turn off the adhesion of a catechol-containing material, achieving this in just seven seconds.
Rutgers engineers create tiny needles inspired by parasites using 4D printing, achieving stronger tissue adhesion and more stable drug delivery. The microneedle outperforms previously reported examples, offering a potential solution to painful injections.
Researchers at POSTECH have discovered the key to strong underwater mussel adhesion, finding that Dopa and Lysine molecules work together in a synergistic effect. Their study used molecular biology techniques to analyze adhesive proteins in mussels and confirmed two molecules with strong adhesion even in underwater conditions.
New research published in PNAS finds the missing link between soft surface adhesion and the roughness of the hard surface it touches. The study reveals that small-scale roughness can create more surface area for soft materials to grip, explaining predicted adhesion behavior.
A team of researchers at Osaka University created a novel two-dimensional graphical tactile display that combines visual and tactile information. The display uses temperature-sensitive adhesive sheets to create a 'sticky' sensation, allowing users to feel objects on the screen.
A team of engineers and marine biologists created a suction cup that clings to both smooth and rough surfaces, holding up to hundreds of times its own weight. The device was inspired by the clingfish's unique adhesive mechanism, which involves a soft layer and slits in the artificial suction cups.
Researchers at NC State University have developed soft polymer microparticles with hierarchical branching on the micro- and nanoscale, exhibiting strong adhesion and structure-building properties. These materials, inspired by gecko feet, have potential applications in various fields such as gels, pastes, foods, nonwovens, and coatings.
Researchers at New Jersey Institute of Technology created a biologically inspired remora disc that replicates the fish's ability to lock onto surfaces, with a 'sweet spot' in suction power between nine and 12 lamellae. The study provides insight into the evolution of the remora's unique disc morphology.
Researchers developed a novel laser-driven programmable non-contact transfer printing technique that eliminates temperature increases and enables precise assembly of micro-scale objects. This innovation opens up engineering opportunities in flexible electronics, paper-based electronics, bio-integrated electronics, and MicroLED displays.
Researchers have identified three genes from a probiotic Lactobacillus species as critical for mediating adhesion to the vaginal epithelium. This is likely crucial for how this species benefits vaginal health.
Researchers at Stanford University have developed a gel that reduces scar tissue and adhesions after cardiac surgery in animals, outperforming current methods. The gel, PNP 1:10, is safe and effective in preventing adhesions, with few side effects.
The article highlights the impact of fluoride on reducing dental caries, citing studies that showed a marked reduction in caries experience in fluoridated cities compared to non-fluoridated control cities. The widespread use of fluoride toothpaste has also been credited with improving oral health and quality of life for populations wor...
Scientists at Lehigh University and Korea Institute of Science and Technology have created a reversible super-glue-like material that can easily come unglued. The new hydrogel-based adhesive combines benefits of both liquid and dry adhesives, allowing for strong adhesion on flat and rough surfaces.
The Penn team created an adhesive that mimics the snail's epiphragm, allowing for strong adhesion and easy reversibility. The breakthrough was achieved using a polymer called PHEMA, which conforms to small grooves on surfaces when wet, making it stick, and hardens into those cavities when dry, securing itself firmly.
Researchers developed a new class of anti-ice surfaces called low interfacial toughness (LIT) materials, which can shed ice from large areas with minimal force. LIT materials work by causing cracks to form easily beneath the ice, allowing it to readily dislodge.
Researchers at the University of Michigan have developed a new class of coatings that sheds ice from even large surfaces with just the force of a light breeze. The coatings introduce a second strategy, low interfacial toughness, which encourages cracks to form between ice and the surface.
Researchers have created a new method of ice removal using materials designed with low interfacial toughness, reducing the amount of force required for detachment. This approach can be applied to large surfaces like wind-turbine blades and airplane wings, minimizing catastrophic failure.
Tevis Jacobs will study individual nanoparticles using electron microscopy to understand atomic-scale relationships between adhesion and coarsening. The award enables the development of new methods for measuring nanoparticle attachment and stability on surfaces.
Researchers detail sticky situations at the nanoscale, finding that miniscule differences in surface roughness can cause significant changes in adhesion. Their theory predicts an increase in interface toughness as roughness increases, with potential applications in micro-electro-mechanical systems and nanoscale patterning.
Researchers at the University of Illinois have developed a new reusable adhesive that activates quickly and maintains strong adhesion underwater. The shape memory polymers (SMPs) can be manipulated to transition between two states, allowing for reversible dry adhesion and enabling applications such as wet or submerged wall mounting.
Researchers at Osaka University have developed a method to make industrial polymers adhesive without the need for adhesives or corrosive chemical treatments. This breakthrough enables vulcanized rubber and plastic PTFE to adhere strongly to each other, or to glass and copper, using surface chemistry.
Researchers identified a cell type responsible for initial steps of adhesion formation and developed an antibody-based therapy to treat and prevent adhesions. The treatment showed promise in mouse models and expressed similar genes as human tissue, suggesting potential translation into the clinic.
Researchers at Boston University School of Medicine developed a simplified procedure called SEAL to remove scar tissue and adhesions that contribute to post-surgical low back pain. The study found short-to-moderate term pain relief in 74% of patients, with over 40% experiencing greater than 50% pain relief after three years.
Research reveals that malaria parasites exhibit elevated cyto-adhesion during fever, which contributes to microvasculature obstruction and splenic clearance issues. The study found a significant increase in phosphatidylserine expression on infected red blood cells at febrile temperatures.
Stanford researchers identify a key bacterial molecule, pEtN cellulose, that enhances adhesion of E. coli to bladder cells, potentially leading to new treatments for urinary tract infections. The finding could break the cycle of infection by preventing bacterial adhesion.
A research team from Kiel University has developed a method to boost the adhesive effect of silicone materials by combining surface structuring with plasma treatment. They found that surfaces with a mushroom-like microstructure exhibit significantly improved adhesion, even when bent to varying degrees. This breakthrough could enable ne...
Researchers developed a novel Polyelectrolyte complex film to prevent post-surgical adhesions, offering a barrier against unwanted tissue bonding and reducing the need for secondary surgeries. The biodegradable film is strong, flexible, and inhibits macrophage, lymphocyte, platelet, and fibroblast adhesion.
Researchers discovered a molecular code that determines synapse formation and function in the brain. Three adhesion molecules precisely define how connections between neurons are made, shedding light on autism and schizophrenia. This finding could lead to better understanding of brain disorders and potential new therapies.
Two joint projects between IST Austria and French research institutes will study how polarity, shape and mechanics of cells control cell division. Johann Danzl and Olivier Thoumine investigate the role of synaptic adhesion molecules in synapse function using optically controlled molecules and high-resolution optical imaging.
A study has characterized the physical mechanism that enables a widespread bacterial pathogen to adhere to human host tissues. The researchers used atomic force microscopy and molecular dynamics simulations to reveal a unique cooperation of non-covalent hydrogen bonds in the adhesion process.
MIT engineers create kirigami-patterned adhesive films that stick to highly deformable regions of the body, such as knees and elbows, and maintain their hold even after 100 bending cycles. The films' slits open at the center of bending, releasing tension and improving grip.
Brown University engineers developed a new method of measuring the stickiness of micro-scale surfaces, which could aid in designing and building micro-electro-mechanical systems (MEMS). The technique uses thermal vibrations to calculate work of adhesion, allowing for the evaluation of material properties and surface textures.
Researchers developed a new model to characterize ice accumulation on aircraft wings, including mixed ice forms and their effects on adhesion characteristics. The study aims to improve understanding of thermally active nanocoatings to combat ice formation.
Researchers develop hybrid material combining nacre mimetic with silver nanowires, exhibiting excellent heating properties and high flexibility. The composite material shows promise for wearable devices, such as bendable heaters.
Researchers at UNIST created a new type of underwater adhesive that is stronger than natural biological glues used by mussels. The hydrogel-based adhesive exhibits strong adhesion under wet conditions due to reversible interlocking between reconfigurable microhook arrays.
Researchers at Osaka University have developed a new method to make non-stick fluoropolymers adhesive by combining heat and plasma treatments. This approach improves the bonding strength of PTFE with other materials, avoiding the use of harsh chemicals and increasing its industrial applications.
Researchers at the University of Pittsburgh have developed a new approach to reduce adhesion in small parts, which is expected to improve next-generation microdevices. The study uses nanomaterials to create rough surfaces that prevent tiny objects from sticking together.
Researchers discovered that Chlamydomonas algae can control its adhesion to surfaces using blue light, a phenomenon that could improve the efficiency of biofuels production. By understanding this mechanism, scientists hope to develop algae strains with modified photoreceptors that don't form biofilms on glass walls.
Researchers at NTNU have developed a novel approach to prevent ice build-up by cracking it. By adding inner pillars and holes to surfaces, they can create macro-cracks that allow ice to fall off, reducing adhesion strengths by up to 50%. This method has the potential to revolutionize anti-icing technology in various industries.
A new inorganic adhesive method was developed to overcome the challenges of using organic adhesive in cryogenic adsorption pumps. The method involves combining membranes of metals with good compatibility, creating a strong adhesive force. The new pump achieved seven times larger pumping speed compared to previous models.
Researchers found that geckos don't always have enough adhesive ability to save themselves, especially when encountering unexpected falls. The study's results could lead to a better understanding of how geckos stick to surfaces and potentially inspire new technologies.
Researchers studied the structure of MDGA1/Neuroligin-2 complex, revealing how it negatively modulates synapse development. The study provides key findings on the mechanism of action of MDGAs in regulating excitatory/inhibitory synapses.
Ticks use specialized pads on their feet to adhere to surfaces, allowing them to walk and search for prey on humans and animals. Their attachment mechanism is reversible and can be folded and unfolded like an accordion.
Researchers developed hybrid composites using hemp fibers and ground tire rubber to improve interfacial adhesion and balance stiffness and strength. The quality-over-cost ratio was optimized by combining mechanical property data with raw material costs, making the methodology applicable to various systems.