A Gaussian model of fluctuating membrane and its scattering properties
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929312450478080 |
|---|---|
| author | Gommes, Cedric J. Dubey, Purushottam S. Stadler, Andreas M. Wu, Baohu Czakkel, Orsolya Porcar, Lionel Jaksch, Sebastian Frielinghaus, Henrich Holderer, Olaf |
| author_facet | Gommes, Cedric J. Dubey, Purushottam S. Stadler, Andreas M. Wu, Baohu Czakkel, Orsolya Porcar, Lionel Jaksch, Sebastian Frielinghaus, Henrich Holderer, Olaf |
| contents | A mathematical model is developed, to jointly analyze elastic and inelastic scattering data of fluctuating membranes within a single theoretical framework. The model builds on a non-homogeneously clipped time-dependent Gaussian random field. This specific approach provides one with general analytical expressions for the intermediate scattering function, for any number of sublayers in the membrane and arbitrary contrasts. The model is illustrated with the analysis of small-angle x-ray and neutron scattering as well as with neutron spin-echo data measured on unilamellar vesicles prepared from phospholipids extracted from porcine brain tissues. The parameters fitted on the entire dataset are the lengths of the chain and head of the molecules that make up the membrane, the amplitude and lateral sizes of the bending deformations, the thickness fluctuation, and a single parameter characterizing the dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_08569 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A Gaussian model of fluctuating membrane and its scattering properties Gommes, Cedric J. Dubey, Purushottam S. Stadler, Andreas M. Wu, Baohu Czakkel, Orsolya Porcar, Lionel Jaksch, Sebastian Frielinghaus, Henrich Holderer, Olaf Chemical Physics Soft Condensed Matter A mathematical model is developed, to jointly analyze elastic and inelastic scattering data of fluctuating membranes within a single theoretical framework. The model builds on a non-homogeneously clipped time-dependent Gaussian random field. This specific approach provides one with general analytical expressions for the intermediate scattering function, for any number of sublayers in the membrane and arbitrary contrasts. The model is illustrated with the analysis of small-angle x-ray and neutron scattering as well as with neutron spin-echo data measured on unilamellar vesicles prepared from phospholipids extracted from porcine brain tissues. The parameters fitted on the entire dataset are the lengths of the chain and head of the molecules that make up the membrane, the amplitude and lateral sizes of the bending deformations, the thickness fluctuation, and a single parameter characterizing the dynamics. |
| title | A Gaussian model of fluctuating membrane and its scattering properties |
| topic | Chemical Physics Soft Condensed Matter |
| url | https://arxiv.org/abs/2404.08569 |