Motion control of magnetic microsphere robot in simulated blood
Micro-/nano-robots can deliver drugs accurately and efficiently,due to its advantages of small size,high control precision,and easy access to small cavities,which is a new direction for future precision medicine.A magnetic microsphere robot system is constructed using gelatin as the base material.It not only has the advantages of non-toxic,non-polluting and biodegradable gelatin,but also harmless to biological tissues and can realize control without directly contact with substances that magnetic field has.By optimizing the preparation conditions such as gelatin concentration,stirring speed,emulsifier concentration and emulsification time,stable and uniform gelatin magnetic microspheres are prepared.The effects of particle size,magnetic field strength,frequency and liquid viscosity on particle motion are studied.Motion control of particles in simulated blood at different concentrations is further explored.In the future,machine vision,automatic identification and navigation can be combined to truly reflect the advantages of micro-/nano-technology,and it is expected to obtain broad medical application prospects.
magnetic microsphere robotmagnetic field drivemotion control