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Measuring surface-area-to-volume ratios in soft porous materials using laser-polarized xenon interphase exchange nuclear magnetic resonanceWe demonstrate a minimally invasive nuclear magnetic resonance (NMR) technique that enables determination of the surface-area-to-volume ratio (S/V) of soft porous materials from measurements of the diffusive exchange of laser-polarized 129Xe between gas in the pore space and 129Xe dissolved in the solid phase. We apply this NMR technique to porous polymer samples and find approximate agreement with destructive stereological measurements of S/V obtained with optical confocal microscopy. Potential applications of laser-polarized xenon interphase exchange NMR include measurements of in vivo lung function in humans and characterization of gas chromatography columns.
Document ID
20040087701
Acquisition Source
Johnson Space Center
Document Type
Reprint (Version printed in journal)
Authors
Butler, J. P.
(Harvard School of Public Health Boston, MA 02115, United States)
Mair, R. W.
Hoffmann, D.
Hrovat, M. I.
Rogers, R. A.
Topulos, G. P.
Walsworth, R. L.
Patz, S.
Date Acquired
August 21, 2013
Publication Date
April 8, 2002
Publication Information
Publication: Journal of physics. Condensed matter : an Institute of Physics journal
Volume: 14
Issue: 13
ISSN: 0953-8984
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: R21-RR
CONTRACT_GRANT: NAG9-1166
CONTRACT_GRANT: R01 HL-55569
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Discipline Environmental Health

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