Ferromagnetic floating robots - a new word in the diagnosis and treatment of diseases

Microscopic robots that can move around inside our bodies have long ceased to be something incredible and, most likely, sooner or later will find their application in medicine. But more interesting still: all the currently existing robots are based on a variety of travel technology. And recently, experts from the University of Exeter (UK) presented one of, perhaps the most interesting. It is based on the creation of robots with a ferromagnetic head.

Ferromagnetic floating robots - a new word in the diagnosis and treatment of diseases

As the editors Physics of Fluids, robot consists of two main parts: the already mentioned ferromagnetic head and a flexible movable zhguitika at the other end. The dynamic characteristics of the robot-swimmer at the air-liquid phase interface, depending on the frequency and amplitude of an external magnetic field was able to establish that the speed can be controlled miniature robot using a magnetic field with a frequency of less than 3, 5 microtesla. At the same time, changing the flagellum length, it managed to achieve what one can clearly monitor the movement of the robot, making the move in the desired direction.

Ferromagnetic floating robots - a new word in the diagnosis and treatment of diseases

Geometric robot model configuration (a) and a schematic representation of the ferromagnetic particles (b) robot device itself is quite simple: at one end is the head of a ferromagnetic material having in its composition of neodymium, iron and boron. The crystal lattice of the substance has a tetragonal shape and allows it to have good ferromagnetic properties. The head is made in the form of a cube face with equal 0, 5 millimeters. At the other end is movable microbots flagellum (or tail).

Moving the robot it was borrowed from nature. Zhguik some unicellular and animal cells (e.g., sperm), moving fluid stream creates turbulence, which allows to move. flagellum robot does the same thing.

Ferromagnetic floating robots - a new word in the diagnosis and treatment of diseases

Measurement of fluid flow rate as a function of frequency. Here is a schematic image of the robot with a ferromagnetic particle as a pump

About the scope of the creators of the robot until you say, noting that using it in medical practice, you can achieve amazing results. For example, using targeted drug delivery or as a diagnostic device for monitoring diseases and medical conditions.

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