Deep in the wound, a small wireless circuit quietly started, and began to slowly release heat to kill the surrounding bacteria - this heat therapy is even difficult to resist even the most resistant bacteria. After completing the mission, the circuit will dissolve itself, and the biological components that make up it will become part of the human body's circulation.
In a strict sense, this scene has not yet fully become a reality, but it is not far off. In addition to soluble circuits, scientists at the University of Illinois published the latest results on degradable wirelessly controlled energy storage circuits at AdvancedMaterials on the 17th of this month, and have already experimented with mice.
This discovery can be said to be a very important step in the bio-electronics field to expand the “micro-devices to dissolve automatically after completing the treatment taskâ€. Such techniques will be applied to include the stimulation of nerve and bone growth, in combination with wound healing, drug delivery, and antibiotics.
This wireless control circuit is attached to an ultra-thin silk substrate and responds to different frequency signals. The very important antenna in the entire wireless control circuit - used to receive wireless signals and converted into electrical energy to drive the circuit - is made of magnesium laid on the surface of the silk. A 500-nanometer ultra-fine magnesium antenna can be completely dissolved in deionized water at room temperature in just 2 hours; and an antenna 6 times larger than this can take only a few days.
In this regard, Carnegie Mellon University professors said that this is important for the development of biodegradable electronic systems. At the same time, he also pointed out that the use of radio waves as an energy source means that the deeper the device is implanted, the larger the antenna size required. “I think the supply of energy will be a real problem for biodegradable electronics,†he said. “This definitely brings a very important application, but we also need to clearly define which diseases we have in the field of treatment than traditional treatments. The advantages."
Source: Zhongan Net
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