Biotechnology, Pharma and Biopharma News – Research – Science – Lifescience ://Biotech-Biopharma-Pharma: Water as a ‘glue’ for elasticity enhanced, wet attachment of biomimetic structures .In nature, octopus, clingfish and larva use soft biological cups to attach to surfaces under water. Researchers have recently developed such bioinspired cups, but their mechanisms of attachment and detachment remain elusive. A new team of scientists developed an innovative microcup engineered via two-photon lithography with integrated sensors and cameras, to reveal the detailed nature of its attachment and detachment under water. In this work, Yue Wang and a research team in new materials, and mechanical science and engineering, in Germany and the U.S., showed how elasticity-enhanced hydrodynamics improved self-healing and high suction at the cup substrate interface to convert water into “glue.” The team developed a mathematical model to describe the interplay between attachment and detachment processes. Accordingly, if the process was too slow, the octopus could not attach; if the tide was too gentle for larvae, the water could not serve as a glue. The concept of water glue can therefore be used for innovative underwater transport and manufacturing strategies. The study is now published in Science Advances.
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