The sticky science of underwater adhesives

Mussels stick to rocks on the seafloor, to aquatic plants, and—to the consternation of boaters—they can hitch rides fastened to seafaring vessels no matter their composition: metals, rubber, glass, wood and more.

New quick-fix wrap can repair and reinforce existing structures

By protecting concrete pillars with a ready-to-stick wrap developed by Nanyang Technological University, Singapore (NTU Singapore) and JTC, existing structures can be easily repaired and reinforced to extend their lifespan. ...

Slug glue reveals clues for making better medical adhesives

The Dusky Arion slug produces a defensive glue that fouls the mouthparts of any would-be predator. Two new studies reveal more about how this glue achieves its strong sticking power and flexibility, insights that could be ...

New bioinspired glue bonds any surface underwater

Underwater adhesion is technically challenging because of the presence of water, the worst enemy for any glue. Now, scientists from Wageningen University & Research have developed an injectable adhesive able to bond to many ...

Shape shifting mirror opens a vista for the future

A team of researchers from JTEC Corporation and Osaka University developed a bimorph deformable mirror that allows for precise shape modification and usage under vacuum, a world first.

Enzyme's unfrozen adventure: In crystallo protein thermodynamics

Enzymes—biocatalysts made of proteins—are hugely important molecules that catalyze the reactions and processes in living organisms. Ongoing work to understand their structures and reaction mechanisms is therefore vital ...

Oysters: one animal, two glues

Oysters build extensive reef communities by cementing to one another early in their lives. Scientists have known they secrete an adhesive for this purpose, but new research shows the glue they make as babies and juveniles ...

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Adhesive

An adhesive, or glue, is a mixture in a liquid or semi-liquid state that adheres or bonds items together. Adhesives may come from either natural or synthetic sources. The types of materials that can be bonded are vast but they are especially useful for bonding thin materials. Adhesives cure (harden) by either evaporating a solvent or by chemical reactions that occur between two or more constituents.

Adhesives are advantageous for joining thin or dissimilar materials, minimizing weight, and when a vibration dampening joint is needed. A disadvantage to adhesives is that they do not form an instantaneous joint, unlike most other joining processes, because the adhesive needs time to cure.

The earliest known date for a simple glue is 200,000 BC and for a compound glue 70,000 BC.

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