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Optical porosimetry and investigations of the porosity experienced by light interacting with porous media.

Svensson, Tomas LU ; Alerstam, Erik LU ; Johansson, Jonas LU and Andersson-Engels, Stefan LU (2010) In Optics Letters 35(11). p.1740-1742
Abstract
We investigate how light samples disordered porous materials such as ceramics and pharmaceutical materials. By combining photon time-of-flight spectroscopy and sensitive laser-based gas sensing, we obtain information on the extent to which light interacts with solid and pore volumes, respectively. Comparison with mercury intrusion porosimetry shows that light predominantly interacts with the solid. Analysis based on a two-state model does not fully explain observations, revealing a need for refined modeling. Nonetheless, excellent correlation between actual porosity and the porosity experienced by photons demonstrates the potential of nondestructive optical porosimetry based on gas absorption.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
35
issue
11
pages
1740 - 1742
publisher
Optical Society of America
external identifiers
  • wos:000278230400004
  • pmid:20517400
  • scopus:77954912183
ISSN
1539-4794
DOI
10.1364/OL.35.001740
language
English
LU publication?
yes
id
75e803cc-1bdc-4405-9a6a-5fff1ecb32bb (old id 1626462)
date added to LUP
2010-08-19 16:00:00
date last changed
2018-05-29 10:31:56
@article{75e803cc-1bdc-4405-9a6a-5fff1ecb32bb,
  abstract     = {We investigate how light samples disordered porous materials such as ceramics and pharmaceutical materials. By combining photon time-of-flight spectroscopy and sensitive laser-based gas sensing, we obtain information on the extent to which light interacts with solid and pore volumes, respectively. Comparison with mercury intrusion porosimetry shows that light predominantly interacts with the solid. Analysis based on a two-state model does not fully explain observations, revealing a need for refined modeling. Nonetheless, excellent correlation between actual porosity and the porosity experienced by photons demonstrates the potential of nondestructive optical porosimetry based on gas absorption.},
  author       = {Svensson, Tomas and Alerstam, Erik and Johansson, Jonas and Andersson-Engels, Stefan},
  issn         = {1539-4794},
  language     = {eng},
  number       = {11},
  pages        = {1740--1742},
  publisher    = {Optical Society of America},
  series       = {Optics Letters},
  title        = {Optical porosimetry and investigations of the porosity experienced by light interacting with porous media.},
  url          = {http://dx.doi.org/10.1364/OL.35.001740},
  volume       = {35},
  year         = {2010},
}