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Particle and Thin Film Adhesion

Posted 20 Dec, 2007 in Series

Contributor(s) Stephen Beaudoin
Purdue University

Ravi Jaiswal

Caitlin Kilroy
Purdue University
Abstract

image The adhesion of micron and sub-micron scale particles to surfaces is of tremendous interest in a wide range of industrial and civilian applications. We measure directly the adhesion of particles to surfaces using atomic force microscopy and develop experimentally-validated, science-based models for the adhesion. The models consider electrostatic, van der Waals, and hydrophobic interactions for rough, deformable particles with nonuniform geometry adhering to rough deformable surfaces in liquid, gaseous, or vacuum environments.

These efforts are currently being applied to improve wafer cleaning and polishing processes in the semiconductor industry, to assist in the detection of weapons and explosives, and to facilitate the development and implementation of biomaterials with optimal surface properties.

Credits Stephen Beaudoin School of Chemical Engineering Purdue University
Sponsored by National Science Foundation, Engineering Reseach Center for Environmentally Benign Semiconductor Manufacturing.
Cite this work

If you reference this work in a publication, please cite as follows:

  • Beaudoin, Stephen; Jaiswal, Ravi; Kilroy, Caitlin (2007), "Particle and Thin Film Adhesion," http://pharmahub.org/resources/29.

    BibTex | EndNote

Tags
  1. fast fourier transform
  2. hamaker constants
  3. particle adhesion
  4. surface roughness
  5. thin films
  6. van der waals force

In This Series

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  1. Simulation of the Adhesion of Particles to Surfaces

    20 Dec. 2007 | Publications | Contributor(s): Stephen Beaudoin, Ravi Jaiswal, Caitlin Kilroy

    The removal of micrometer and submicrometer particles from dielectric and metal films represents a challenge in postchemical mechanical polishing cleaning. Proper modeling of the adhesive force between contaminant particles and these films is needed to develop optimal solutions to postchemical …

  2. Hamaker Constants in Integrated Circuit Metallization

    20 Dec. 2007 | Publications | Contributor(s): Stephen Beaudoin, Ravi Jaiswal, Caitlin Kilroy

    A new method for determining Hamaker constants was examined for materials of interest in integrated circuit manufacture. An ultra-high vacuum atomic force microscope and an atomic force microscope operated in a nitrogen environment were used to measure the interaction forces between metals, …

  3. Roughness models for particle adhesion

    20 Dec. 2007 | Publications | Contributor(s): Stephen Beaudoin, Ravi Jaiswal, Caitlin Kilroy

    The effects of different surface roughness models on a previously developed van der Waals adhesion model were examined. The van der Waals adhesion model represented surface roughness with a distribution of asperities. It was found that the constraints used to define the asperity distribution on …


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