Comparison of AFM and Density Functional Theory Force Profiles

POSTER

Abstract

Monolayer films of tethered poly(N-isopropylacrylamide) in water (and related systems) are investigated with Atomic Force Microscopy. The resulting profiles are analyzed with Density Functional Theory. Of interest are the effects of temperature, degree of polymerization, and surface coverage upon the colloidal force. A particular challenge is the modeling of the adhesive behavior of the film to the coated AFM tip.

Authors

  • Keenan Dotson

    • Materials Department, New Mexico Tech, Socorro, NM 87801

  • John McCoy

    • Materials Department, New Mexico Tech, Socorro, NM 87801
    • New Mexico Tech

  • Daniel McCoy

    • Materials Department, New Mexico Tech, Socorro, NM 87801

  • Sergio Mendez

    • Chemical and Nuclear Engineerng Department, Univ. of New Mexico, Albuquerque, NM 87131

  • John Curro

    • University of New Mexico, Albuquerque, NM 87131
    • Chemical and Nuclear Engineerng Department, Univ. of New Mexico, Albuquerque, NM 87131
    • University of New Mexico

  • Brett Andrzejewski

    • Chemical and Nuclear Engineerng Department, Univ. of New Mexico, Albuquerque, NM 87131

  • Gabriel Lopez

    • Chemical and Nuclear Engineerng Department, Univ. of New Mexico, Albuquerque, NM 87131

  • David Keller

    • Chemical and Nuclear Engineerng Department, Univ. of New Mexico, Albuquerque, NM 87131