Format

Send to

Choose Destination
Opt Lett. 2010 Jun 1;35(11):1740-2. doi: 10.1364/OL.35.001740.

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

Author information

1
Department of Physics, Lund University, 221 00 Lund, Sweden. tomas.svensson@fysik.lth.se

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.

PMID:
20517400
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Optical Society of America
Loading ...
Support Center