UC San Diego creates another super sucker: inspired by herd

A few weeks ago, scientists from the University of Washington developed an efficient suction cup, inspired by the unassuming mackerel, also known as the sucker, foreign media reported. Now, researchers from the University of California, San Diego, have taken a different approach to creating their own efficient suckers and even using them on underwater robots.


Fish, as its name, live in the intertidal zone of the ocean, the northern sucker fish in order not to be washed away by the choppy waves through its powerful suction cup attached to the rock. It uses two fins on the lower side of the body to form a disc and then attach it to a rough surface.

The washington and San Diego teams noted that there was a tiny layer of hair-like structure at the edge of the fish’s disc, which allowed the disc to be sealed on various surfaces by friction. In addition, it is very flexible and flexible, which greatly enhances its ability to maintain contact.

As a result, both teams replicated this structure on their prototype suckers, and the result was that they performed very well in absorbing and lifting various heavy, rough surface objects.


Northern herring is found in temperate and tropical regions around the world

But the UC San Diego suction cup differs from the University of Washington’s, one of which is that it adds bio-inspired gaps along the silicone edge, which helps the material to meet the contours of irregularly shaped surfaces.

The study’s lead author, Ph.D. student Jessica Sandoval, said the design of the disc-shaped edge gap was inspired by the cross-section of the fish’s belly fin and pectoral fins, “We showed that our prototype can be attached to objects such as agricultural products, crabs, conch shells and vases.” “


The device can attach, lift objects in the air and underwater

Sandoval’s underwater robots ,” pilots, are also interested in how the technology works.

Sandoval also points out that they have collected a variety of exquisite specimens of archaeological artifacts, from creatures such as clams to bicefish on the sea floor, through ROV (remotely operated submersibles). To demonstrate the use of the suction cup, the researchers experimented with raw eggs selected and placed using a prototype, a feat for them because the robot’s aluminum claws were so difficult to grab such a fragile object.


The study was published in Bioinspiration and Biomimetics.


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