Quantitative link between single-particle dynamics and static structure of supercooled liquids

Article Abstract:

A study presents evidence via molecular simulation that the supercooled fluid states of SPC/E water as well as the repulsive and attractive supercooled fluid states of a recently introduced model for colloids with short-ranged attractions are characterized by the same functional relationship between self-diffusivity and the pair correlation function. The fact that this relationship is able to describe the nontrivial behaviors of these very different types of supercooled liquids suggests that its applicability may be far more general.

Water, Supercooled liquids, Thermal properties, Diffusion, Diffusion (Physics), Entropy (Physics), Entropy (Thermodynamics)

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Multichromophoric Forster resonance energy transfer from B800 to B850 in the light harvesting complex 2: evidence for subtle energetic optimization by purple bacteria

Article Abstract:

An exhaustive description of the application of multichromophoric Forster resonance energy transfer (MC-FRET) theory for the computation of the energy transfer rate from the B800 unit to the B850 unit in the light harvesting complex 2 (LH2) of purple bacteria is presented. It is proved that the bacterial system uses the quantum mechanical coherence among the various chromophores within the B850 in a creative way in order to attain efficient energy transfer from B800 to B850.

Resonance, Resonance (Physics), Chromophores, Energy transformation

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Characterization of the static disorder in the B850 band of LH2

Article Abstract:

A systematic simulation study was conducted for a model of the B850 band in the light harvesting complex 3 of purple bacteria. The result reveals that the disorder in the B850 is likely Gaussian and that comparable magnitudes of both diagonal and off-diagonal disorder coexist.

Bacteria, Polypeptides, Chemical properties

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