3D visualization and characterization of nano structured materials

Hossein Ostadi, Pratap Rama, Rui Chen, Y. Liu, Xiaoxian Zhang, Yuan Gao, Kyle Jiang

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

4 Citations (Scopus)

Abstract

This paper reports a study on 3D topography and tomography visualization of materials with micro and nano features. SEM stereo imaging technique is employed to characterize surfaces by reconstruction. With this technique, diatomaceous frustules and sputtering yield of metals were analyzed. X-ray nanotomography (nCT) is used for characterization of a polymer electrolyte fuel cell (PEFC) gas diffusion layer (GDL) with 680 nm resolution. Focused ion beam/SEM (FIB/SEM) nanotomography is developed to visualize materials with resolution from 8 to 60 nm. The technique was used to reconstruct glass micropipette tips and PEFC microporous layers (MPL). In addition, porosity of PEFC layers and roundness of micropipette tips can be extracted from the reconstructed models. As an example of the applications of the FIB/SEM technique, tomographic images of PEFC MPL is combined with the lattice Boltzmann (LB) numerical modeling to anticipate the permeability which helps understand the flow inside the porous layers of the fuel cell and provide the opportunity to improve the performance.

Original languageEnglish
Title of host publication2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Pages770-775
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2011
Event2011 11th IEEE International Conference on Nanotechnology, NANO 2011 - Portland, OR, United States
Duration: 15 Aug 201119 Aug 2011

Conference

Conference2011 11th IEEE International Conference on Nanotechnology, NANO 2011
Country/TerritoryUnited States
CityPortland, OR
Period15/08/1119/08/11

ASJC Scopus subject areas

  • Bioengineering
  • Electrical and Electronic Engineering
  • Materials Chemistry
  • Condensed Matter Physics

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