The creation of a fish-shaped robot line and gold core opens a new door to research in tissue engineering, according to a report released today by the journal Science.
the creators. the team of medical engineers who created the robotic fish stripe is composed of researchers from Harvard University and Stanford in the US, and University of Stan Sogang in Seoul.
outstanding Achievement. appearance and identical to a real fish proportions, flat body and fins shaped wings extending from the head and throughout his body, the prototype is an achievement of tissue engineering.
Features. the prototype has 200,000 cardiac rat cells, measuring 16 millimeters long and weighs 10 grams. Beyond morphology, robot-ray has an energy efficiency equal to that of the original animal, because it emulates the way to glide through the water.
Gold. the core of the robot is made of gold particles, coated with an elastic layer of polyethylene and rat heart cells which are photosensitive, ie responsive to light stimulation.
Why is gold? Thanks to these muscle cells from rat heart, engineers can cause the motor response of the robot, because when exposed to light cells fins contract.
Explanation. the problem was how to get the relaxation of the fins. To overcome this obstacle, engineers inserted skeleton gold, so that retains energy which is subsequently released as cells relax, and allow the fins become lifted.
Control. So scientists, using pulses of light, control the flapping robot-stripe on its intensity, frequency and direction, with such efficiency that can guide the contraption through a simple obstacle race. (EFE)
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