Learning from endangered zebra stem cells

Scientists from Kyoto University's Institute for Integrated Cell-Material Sciences (iCeMS) and Wildlife Research Centre have produced stem cells from the endangered Grévy's zebra using human reprogramming factors. Further ...

How mussels maintain adhesion underwater

Bathroom accessories mounted on tile walls often fall off if not mounted correctly. This is because the moisture in the bathroom weakens the surface adhesion. Conversely, mussels boast amazing adhesion as they stick firmly ...

A peptide hydrogel for efficient production of cell spheroids

Prof. Zhimou Yang, who has wored in the research field of peptide self-assembly biomaterials for more than 15 years, has designed a peptide hydrogel for cell spheroids production. "Supramolecular hydrogels of self-assembling ...

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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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