Patent ID: 11964359
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 18:
19. A method of forming a polishing article, comprising:
depositing a plurality of composite layers with a 3D printer to reach a target thickness, wherein depositing the plurality of composite layers comprises:
depositing a first material having a first region with a first zeta potential; and
depositing a second material having a second region with a second zeta potential; and

solidifying the plurality of composite layers to form a composite pad body having one or more first features comprising the first material and one or more second features comprising the second material, wherein the one or more first features and the one or more second features form a unitary body;
wherein:
the first zeta potential measured with the use of a neutral solution is equal to or above −70 mV and less than 0 mV and the second zeta potential measured with the use of a neutral solution is equal to or above 0 mV and less than 50 mV; or
the first zeta potential measured with the use of a neutral solution is equal to or above 0 mV and less than 50 mV and the second zeta potential measured with the use of a neutral solution is equal to or above −70 mV and less than 0 mV.