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  Element-Specific Density Profiles in Interacting Biomembrane Models

Schneck, E., Rodriguez-Loureiro, I., Bertinetti, L., Marin, E., Novikov, D., Konovalov, O., et al. (2017). Element-Specific Density Profiles in Interacting Biomembrane Models. Journal of Physics D: Applied Physics, 50(10): 104001. doi:10.1088/1361-6463/aa59d3.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-4C05-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-C068-5
Genre: Journal Article

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 Creators:
Schneck, Emanuel1, Author              
Rodriguez-Loureiro, Ignacio1, Author              
Bertinetti, Luca2, Author              
Marin, Egor, Author
Novikov, Dmitri, Author
Konovalov, Oleg, Author
Gochev, Georgi1, Author              
Affiliations:
1Emanuel Schneck, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2074300              
2Luca Bertinetti (Indep. Res.), Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2231637              

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 Abstract: Surface interactions involving biomembranes, such as cell-cell interactions or membrane contacts inside cells play important roles in numerous biological processes. Structural insight into the interacting surfaces is a prerequisite to understand the interaction characteristics as well as the underlying physical mechanisms. Here, we work with simplified planar experimental models of membrane surfaces, composed of lipids and lipopolymers. Their interaction is quantified in terms of pressure-distance curves using ellipsometry at controlled dehydrating (interaction) pressures. For selected pressures, their internal structure is investigated by standing-wave x-ray fluorescence (SWXF). This technique yields specific density profiles of the chemical elements P and S belonging to lipid headgroups and polymer chains, as well as counter-ion profiles for charged surfaces.

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 Dates: 2017-01-172017
 Publication Status: Published in print
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 Identifiers: DOI: 10.1088/1361-6463/aa59d3
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Title: Journal of Physics D: Applied Physics
  Abbreviation : J. Phys. D: Appl. Phys.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 50 (10) Sequence Number: 104001 Start / End Page: - Identifier: ISSN: 0022-3727