Researchers at Rice University in the United States have developed a new device that uses fast-flowing liquids to insert flexible conductive carbon nanotube fibers into the brain to help record neuronal activity. This microfluid-based technology is expected to improve through electrode sensing. The treatment of neuronal signals brings good news to patients with epilepsy and other diseases. Researchers believe that nanotube-based electrodes will ultimately help scientists discover the mechanisms behind cognitive processes and establish a direct interaction with the brain that allows patients to see, hear, and control prostheses.
The device uses the force exerted by a fast-flowing liquid to gently push the flexible insulating fibers into the brain tissue without deformation, and existing methods of delivering wires to the brain using a hard, degradable sheath may damage sensitive brain tissue. Laboratory and in vivo experiments have shown that the microfluidic device can force the viscous fluid to flow around the fine fiber electrode, and the fast flowing liquid slowly pulls the fiber through the small hole to the brain tissue. Since the tension around the electrode is evenly distributed, the fiber will not Bending occurs and liquid does not enter the brain through the small holes. Carbon nanotube fibers are capable of conducting electrons in all directions, but can only communicate with neurons at their tips, so the team developed a coating technique to coat the nanotubes to insulate them and keep the diameter of the nanotubes at 15- Between 30 microns, much thinner than human hair.
Researchers believe that the technology will eventually enable the placement of multiple microelectrodes in a dense array into the brain, making embedded implants safer and easier. Since the method causes less damage during implantation, more electrodes can be placed in specific areas of the brain. (Technology Department)
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