AI Article Synopsis
- Researchers conducted (2)H nuclear magnetic resonance (NMR) experiments on multilayer distributions of specific lipids in water to study compositional changes near critical points in a ternary system.
- The study found that the spinning rate, temperature, and sample composition significantly affected the line widths in MAS, which reflect the extent of fluctuations in the (2)H quadrupolar Hamiltonian.
- Analyzing the data revealed a critical index for correlation length (ν(c) = 0.628) that aligns with predictions from a three-dimensional Ising model.
Article Abstract
Static and magic angle spinning (MAS) (2)H nuclear magnetic resonance experiments have been performed on a series of multilamellar dispersions of di-oleoyl-sn-glycero-3-phosphocholine/di-palmitoyl-sn-glycero-3-phosphocholine-d62/cholesterol in water to investigate the compositional fluctuations which occur in the region of the line of critical points for this ternary system. The strong dependence of the MAS line widths on temperature, sample composition, and spinning rate provides a direct measure of the magnitude of the fluctuations in the (2)H quadrupolar Hamiltonian. These data are analyzed in terms of models for critical fluctuations in composition leading to a value for the critical index for the correlation length, ν(c) = 0.628, consistent with a three dimensional Ising model.
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| http://dx.doi.org/10.1063/1.4816366 | DOI Listing |
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