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Adhesion

Adhesion

Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...

Cohesion

Cohesion

Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...

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Perspectives on Mussel-Inspired Wet Adhesion.

¹Marine Science Institute, University of California , Santa Barbara, California 93106, United States.

Journal of the American Chemical Society

|June 29, 2017

Summary

This summary is machine-generated.

Mimicking nature's multiscale structures is key for developing high-performance biomimetic adhesives. Holistic translation of these natural designs is essential for achieving strong, durable wet adhesion comparable to mussels.

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Experimental Multiscale Methodology for Predicting Material Fouling Resistance

Experimental Multiscale Methodology for Predicting Material Fouling Resistance

Area of Science:

Biomimetics
Materials Science
Adhesion Science

Background:

Nature achieves robust wet adhesion through sophisticated control of structures across multiple length scales.
Biomimetic adhesives often fail to translate these multiscale features, limiting their performance compared to natural examples like mussel adhesion.

Purpose of the Study:

To overview breakthroughs in biomimetic adhesives.
To highlight the importance of holistic multiscale translation in biomimetic design.
To argue for replicating natural multiscale coordination for superior wet adhesion.

Main Methods:

Literature review and analysis of major breakthroughs in biomimetic adhesives.
Examination of recent advances in translating natural multiscale structures.
Synthesis of findings to support the necessity of multiscale coordination.

Main Results:

Significant advances demonstrate the critical role of holistic multiscale translation.
The performance gap between biomimetic and natural adhesives is often due to a lack of multiscale design.
Coordination of natural adhesive systems across scales is vital for their effectiveness.

Conclusions:

Holistic multiscale translation is essential for advancing biomimetic adhesive technology.
Replicating the multiscale coordination found in natural systems is crucial for achieving strong, instant, and durable wet adhesion.
Future biomimetic adhesive development should focus on integrated multiscale design principles.