Engineers invented acoustically controlled microrobots

Researchers have developed microscopic remote-controlled mechanical devices whose motors are driven by  ultrasound. They can find many applications in medicine.

Using 3D nanoprinting technologyEngineers from the École Polytechnique Fédérale de Lausanne have created crushed, cell-sized soft capsules made entirely from a biocompatible hydrogel. Their key elements are acoustic micromotors and mechanisms that are activated remotely via ultrasonicwaves.

Using mechanical resonance, scientists cancontrol the movement of robots and influence their environment. For example, by equipping the devices with sediment, a collection chamber and filters of different sizes, they can be used for biopsy, biochemical analysis, drug administration or other therapeutic purposes.

Although the introduction of such microdevices isminimally invasive, they are much more difficult to remove. Therefore, all elements were made from materials that are safely biodegradable in the body. Changing the composition of the hydrogel allows you to adjust the service life of the device depending on its task.

Scientists also announced last month that they are developing a technology for mass-producing laser-guided microrobots that can go through a medical needle.

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