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Related Experiment Video

Updated: May 5, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

Magnetization transfer in lamellar liquid crystals.

Dariya I Malyarenko¹, Ellen M Zimmermann, Jeremy Adler

¹Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA.

Magnetic Resonance in Medicine

|November 22, 2013

Summary

Quantitative magnetization transfer (qMT) accurately measures molecular composition in lamellar liquid crystals. Magnetization transfer ratio (MTR) correlates with semisolid fraction, offering clinically relevant insights.

Keywords:

MRI MT phantom magnetization transfer super-Lorentzian

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Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

Area of Science:

Physical Chemistry
Materials Science
Biophysics

Background:

Quantitative magnetization transfer (qMT) is a sensitive technique for probing molecular environments.
Lamellar liquid crystal (LLC) systems are model systems for complex biological membranes.
Understanding qMT in LLCs can elucidate molecular interactions and composition.

Purpose of the Study:

To investigate the relationship between qMT parameters and the molecular composition of a model LLC system.
To determine how changes in the ratio of semisolid (decanol, SDS) to water protons affect qMT measurements.
To compare different semisolid lineshapes for fitting qMT data.

Main Methods:

Preparation of LLC samples with varying ratios of decanol, SDS, and water within a stable lamellar mesophase.
Acquisition of qMT data across a range of radiofrequency power, frequency offset, and temperature.
Estimation of qMT parameters by fitting a standard model to the experimental data, including comparison of four semisolid lineshapes.

Main Results:

A super-Lorentzian lineshape provided the best fit for the semisolid component.
The estimated semisolid fraction was directly proportional to the decanol-to-water proton ratio.
Magnetization transfer ratio (MTR) showed a linear dependence on the semisolid fraction within a specific decanol concentration range.

Conclusions:

Magnetization transfer in LLCs primarily involves intramolecular nuclear Overhauser effect (nOe) within decanol chains and subsequent proton exchange with water.
Sodium dodecyl sulfate (SDS) influences exchange kinetics but its protons do not directly participate in magnetization transfer.
The study establishes a clinically relevant correlation between MTR and the semisolid fraction in LLC systems.