Under the science and technology continue to pursue the trend of miniaturization, nanobots still hot. In the field of health care, from designed to swallow, experimental robot that swim in the blood, are included in the study area. But one of the most headache is how to control the release of the micro robot. And Switzerland at the ecole polytechnique federale in lausanne (EPFL) and the federal institute of technology in Zurich (ETHZ) cooperation team has come out, invented a new kind of miniature robot, is likely to help drug delivery to the human body, the first step in a landmark.

Cooperation in the team contributes in the research of the journal Nature Communications, points out that the robot prototype is not flexible, scalable and dynamic. They were inspired by microorganisms in reality, especially t.b. trypan (Trypanosoma brucei, an African narcolepsy can spread parasitic protozoa), and designed the micro robot. It has two kinds of shapes, one is flat head with spiral tail; The other is a single complete small spiral structure. Made of a biocompatible polymer and water gel, collocation is in good condition of ferric oxide, able to react to magnetism. The team has already produced 500 microns (microns) the width of finished product, can through the electromagnetic field to control it.

At present, the researchers are testing various configurations using new manufacturing technology, is committed to make the micro robot can not only moving, but also fast. Through the switch the direction of the electromagnetic field, can guide in the experimental liquid trough of the mobile robot. When a whole group of robots arrived at the target, they can respond to the surrounding environment temperature deformation. In the case of this study, the researchers use a specific non-ionizing wavelength laser, let the surrounding temperature 40 ℃, is about the extent of the serious fever, the elastic coefficient of the micro robot immediately change, can stop flapping, the release of hydrophilic components in the blood.

The level of the medical micro-robot can be widely used in drug delivery, microsurgery and clear clogged arteries, etc. The current medical science and technology progress, let us has been able to in a certain range, highly targeted therapy has body and perform certain types of repair or treatment, and will not cause additional trauma, all related research continuing drive.

In chemotherapy, need to face one of the most serious challenge is how to cancer drugs directly onto the site of cancer cell growth and does not damage the surrounding healthy tissue. Usually a series of specially used to kill cancer cells, chemical treatment effect is relatively fast, but in order to eliminate cancer cells in high dose of the drug, at the same time, it will kill many normal cells. Today, highly specific parts of the effective therapy for part of cancer, but the premise is the organization of the cancer cell growth must be isolated in isolation, can make treatment in the local scope. A miniature robot, can promote the targeted drug therapy's ability to cast to a specific location, significantly improve certain types of cancer mortality.