Titre
Measurement of multilamellar onion dimensions under shear using frequency domain pulsed gradient NMR.
Type
article
Institution
Externe
Périodique
Auteur(s)
Lutti, A.
Auteure/Auteur
Callaghan, P.T.
Auteure/Auteur
Liens vers les personnes
ISSN
1090-7807
Statut éditorial
Publié
Date de publication
2007
Volume
187
Numéro
2
Première page
251
Dernière page/numéro d’article
257
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
We present a simple method by which the dimensions of shear-induced multilamellar vesicles (MLVs), also known as onions, can be measured during the shearing process itself. This approach is based on the use of a closely spaced train of magnetic field gradient pulses applied during a CPMG echo sequence. The CPMG train compensates flow effects while the frequency-dependence of apparent diffusion can reveal the onion size. We present here a simple phenomenological model for restricted diffusion in multilamellar vesicles, which may be used to interpret the resulting diffusion spectrum. We demonstrate this approach with MLVs formed from the lamellar phase of sodium dodecyl sulfate (SDS) in water and octanol.
PID Serval
serval:BIB_23DD1A88EF90
PMID
Date de création
2013-07-08T08:22:51.305Z
Date de création dans IRIS
2025-05-20T14:21:23Z