Engineering

Electronic transfer tattoo with a crease amplification effect

Electronic tattoos can have applications during health and movement sensing on human skin. Nevertheless, the existing versions are nonconformal, sticky and multi-layered. In a new report, Lixue Tang and a research team in ...

Engineering

Novel tactile display using computer-controlled surface adhesion

A group of researchers at Osaka University developed a novel two-dimensional (2-D) graphical tactile display to which one-dimensional (1D) adhesive information could be added by controlling adhesion of designated portions ...

Robotics

Centimeter-long snail robot is powered with light

Researchers at the Faculty of Physics at the University of Warsaw, Poland, used liquid crystal elastomer technology to demonstrate a bio-inspired micro-robot capable of mimicking the adhesive locomotion of snails and slugs ...

Adhesion

Adhesion is any attraction process between dissimilar molecular species that can potentially bring them in close contact. By contrast, cohesion takes place between similar molecules.

Adhesion is the tendency of dissimilar particles and/or surfaces to cling to one another (cohesion refers to the tendency of similar or identical particles/surfaces to cling to one another). The forces that cause adhesion and cohesion can be divided into several types. The intermolecular forces responsible for the function of various kinds of stickers and sticky tape fall into the categories of chemical adhesion, dispersive adhesion, and diffusive adhesion. In addition to the cumulative magnitudes of these intermolecular forces, there are certain emergent mechanical effects that will also be discussed at the end of the article.

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