Modeling sub-continuum effects on the mechanical properties of ultrathin macromolecular layers

W. P. King, K. E. Goodson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper makes progress on the prediction of mechanical modulus and mechanical relaxation time of macromolecular materials at small length and time scales. Fundamental studies of large molecules in confined geometries inform predictions of macroscopic materials behavior. A modified Einstein relation, for diffusion of small particles relates macromolecular monomer and chain lengths to mechanical properties. Measurement of viscosity in thin polymer layers show marked increase in viscosity in polymer layers thinner than the polymer radius of gyration. This modeling enables analysis of measurements of the near zero shear rate viscosity in thin macromolecular layers. The intermolecular diffusion time constants, which also depend upon macromolecular size and confinement effects, govern the mechanical relaxation time. This work aims to connect fundamental macromolecular physics with nanometer-scale process and device development.

Original languageEnglish (US)
Title of host publication2002 International Conference on Modeling and Simulation of Microsystems - MSM 2002
EditorsM. Laudon, B. Romanowicz
Pages326-329
Number of pages4
StatePublished - Dec 1 2002
Externally publishedYes
Event2002 International Conference on Modeling and Simulation of Microsystems - MSM 2002 - San Juan, Puerto Rico
Duration: Apr 21 2002Apr 25 2002

Publication series

Name2002 International Conference on Modeling and Simulation of Microsystems - MSM 2002

Other

Other2002 International Conference on Modeling and Simulation of Microsystems - MSM 2002
CountryPuerto Rico
CitySan Juan
Period4/21/024/25/02

Keywords

  • MEMS
  • Macromolecule
  • Mechanical properties
  • Molecular confinement
  • NEMS
  • Polymer film

ASJC Scopus subject areas

  • Engineering(all)

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