Abstract: Provided is a self-sharpening polishing device with magnetorheological flexible polishing pad formed by dynamic magnetic field and polishing method thereof. The device includes a polishing disc revolution mechanism and a multi-magnetic-pole synchronous rotary drive mechanism, the polishing disc revolution mechanism including a transmission shaft motor, a transmission shaft, a transfer disc, an eccentric shaft fixing disc, a cup-shaped polishing disc and a transmission shaft transmission mechanism, the multi-magnetic-pole synchronous rotary drive mechanism including an eccentric spindle, a synchronous rotary drive disc, flexible eccentric rotating shafts, eccentric sleeves, magnetic poles, the eccentric shaft fixing disc, and a spindle motor, etc. The device does not need a circulating device to renew magnetorheological fluid and does not need to renew the magnetorheological fluid during the finishing process; in fact the entire process from rough polishing to precise polishing can be done at one time.

Abstract: A double-face polishing device and a method capable of controlling rigidity of a polishing pad through a cluster dynamic magnetic field are provided. A whole process from double-face rough polishing to precision polishing of a workpiece is implemented by adjusting a rigidity of a flexible polishing pad. The double-face polishing device capable of controlling rigidity of a polishing pad through a cluster dynamic magnetic field includes a variable-rigidity cluster magnetically-controlled polishing pad generating mechanism, a workpiece fast clamping mechanism and a workpiece movement driving mechanism.

Abstract: Provided is a self-sharpening polishing device with magnetorheological flexible polishing pad formed by dynamic magnetic field and polishing method thereof. The device includes a polishing disc revolution mechanism and a multi-magnetic-pole synchronous rotary drive mechanism, the polishing disc revolution mechanism including a transmission shaft motor, a transmission shaft, a transfer disc, an eccentric shaft fixing disc, a cup-shaped polishing disc and a transmission shaft transmission mechanism, the multi-magnetic-pole synchronous rotary drive mechanism including an eccentric spindle, a synchronous rotary drive disc, flexible eccentric rotating shafts, eccentric sleeves, magnetic poles, the eccentric shaft fixing disc, and a spindle motor, etc. The device does not need a circulating device to renew magnetorheological fluid and does not need to renew the magnetorheological fluid during the finishing process; in fact the entire process from rough polishing to precise polishing can be done at one time.

Abstract: A method of modifying a substrate for deposition of charged particles thereon, the method comprising the steps of: providing a substrate that is incapable of bonding to a polyelectrolyte coating that has a charge that is opposite to the charge of the particles that are to be deposited thereon; modifying the surface of the substrate to provide a layer of silicon thereon or therein; and coating the silicon layered surface of the substrate with the polyelectrolyte coating, the polyelectrolyte coating containing functional groups that are capable of forming bonds with said silicon layer and wherein said polyelectrolyte coating enables a substantially even distribution of said charged particles to be deposited thereon.