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

Claim 8:
9. A polishing article, comprising:
a polishing pad body, having:
a polishing surface, comprising:
one or more first polishing features having an upper surface and a sidewall defining a plurality of grooves, wherein the upper surface comprises a first polymer material having a first zeta potential; and
one or more second polishing features defining a bottom surface of the plurality of grooves, wherein the bottom surface comprises a second polymer material having a second zeta potential different than the first zeta potential;

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.