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Updated: Apr 19, 2026

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

Imaging samples in silica aerogel using an experimental point spread function.

Amanda J White¹, Denton S Ebel¹

¹Department of Earth and Planetary Sciences,American Museum of Natural History,Central Park West at 79th Street,New York,NY 10024,USA.

Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

|December 18, 2014

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Accurate analysis of comet particle impacts in aerogel requires advanced imaging. This study introduces a novel deconvolution method using an experimentally measured point spread function (PSF) for precise 3D measurements.

Area of Science:

Materials Science
Astrophysics
Microscopy

Background:

Light microscopy offers rapid, nondestructive sample examination.
Image analysis is often limited by optical distortions.
Deconvolution techniques can recover lost information using point spread functions (PSFs).

Purpose of the Study:

To develop a method for measuring an experimental PSF for 3D deconvolution of comet impact tracks in aerogel.
To improve the accuracy of quantitative measurements of particle location and track morphology.

Main Methods:

Utilized a laser scanning confocal microscope (LSCM) to image comet particle impact tracks in silica aerogel.
Developed a method to measure an experimental PSF using fluorescent beads embedded in aerogel.
Applied a standard biological deconvolution technique to confocal images of Stardust tracks.

Keywords:

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Last Updated: Apr 19, 2026

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

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Published on: September 2, 2016

Scattering And Absorption of Light in Planetary Regoliths

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Main Results:

The experimental PSF enabled more accurate 3D deconvolution of impact tracks.
Quantitative measurements of single grain size and location were improved.
Track morphology measurements became more precise.

Conclusions:

An experimentally measured PSF enhances the accuracy of confocal microscopy for analyzing Stardust impact tracks.
This deconvolution method provides better quantitative data for understanding particle-aerogel dynamics.