According to foreign media reports, it is difficult for scientists to design robots that operate not only on dry land but also in wet and slippery human bodies. Metal robots are prone to corrosion and are very hard and not easily accessible to humans. Some scientists believe that the use of biocompatible hydrogels to make wet robots can solve these problems. Currently, a team from the University of North Carolina in the United States found that robots made with hydrogels can be tightly clamped. Living an object, this technique allows the soft robot to move like an artificial muscle. OrlinVelev, a professor of chemical and biomolecular engineering at the University of North Carolina, said: "Currently, this robotic technology can be used to deliver drugs or as a body tissue scaffold to promote cell growth in a three-dimensional structure. †Scientists have recently said that hydrogels can be used to make robots suitable for surveying wet and soft environments. The researchers cut the hydrogel into different sizes. For example, they cut the hydrogel into a V-shaped structure and inject copper ions on the other side. The V-shaped "arm" is flexible and can hold some objects when the current Through the other side of the V-shaped arm, the object will be released. Such polymer molecules can have positive and negative charge regions and copper ions act as negative charge carriers. Another polymer molecule is attached to the copper ion side, making the hydrogel robot tough in one area. At the same time, the researchers also found that even without the need to energize the hydrogel robot, the movement of the hydrogel can be induced by chemicals. In the second experiment, the team created an X-shaped hydrogel with a reinforced hydrogel on the other side. When they were immersed in alcohol, the hydrogel did not shrink and the hydrogel was reinforced to maintain the prototype. . This causes the X-shaped hydrogel arm to bend and hold smaller objects. When placed in water, the non-reinforced hydrogel expands and smaller objects are released. The details of the experiment were published in the August 2 issue of the Journal of Nature Communications. Return to Tencent.com Home>>
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