Slurry abrasive particle agglomeration experimentation and modeling for chemical mechanical planarization (CMP)

A theoretical modeling approach is developed to predict silica-specific instability in chemical-mechanical polishing (CMP) slurries. In CMP, the formation of large agglomerates is of great concern, as these large particles are associated with high defectivity and poor polishing performance. The proposed model describes the complex CMP slurry system as a colloid under high non-linear shear conditions. The model diverges from the classic colloidal models by focusing on the following: reaction limited agglomeration (RLA) bounded by silica-specific modes of transitory bonding, and modified DVLO assumptions to include chemical activation and hydrodynamic agglomerate break-up condition evaluation. In order to build physical intuition and predict key model parameters, fundamental studies and novel metrology of agglomerates is performed.

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2015

Author dc:creator

• Johnson, Joy Marie

Advisor dc:contributor.advisor

• Duane S. Boning.

• Electrical Engineering and Computer Science.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/99832

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/99832