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Direct method to study membrane rigidity of small vesicles based on atomic force microscope force spectroscopy

Title data

Delorme, Nicolas ; Fery, Andreas:
Direct method to study membrane rigidity of small vesicles based on atomic force microscope force spectroscopy.
In: Physical Review E. Vol. 74 (2006) Issue 3 . - 030901.
ISSN 1550-2376
DOI: https://doi.org/10.1103/PhysRevE.74.030901

Official URL: Volltext

Abstract in another language

Mechanical properties of lipidic membranes such as their bending rigidity are governing liposome morphology and play an important role in processes like membrane fusion and adhesion. Force versus deformation measurements are the most direct means to determine this, but so far experimental data is scarce and mainly stems from techniques that are limited to giant vesicles. We present atomic force microscope force spectroscopy as a method allowing force-deformation measurements of submicron vesicles. Bending rigidities of small unilamellar dipalmitoylphosphatidylcholine (DPPC) liposomes (R < 200 nm) can be derived from the force-deformation data using analytical models based on shell theory and are in good agreement with independent measurements.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Result of work at the UBT: No
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 09 Dec 2014 08:25
Last Modified: 24 Nov 2017 09:35
URI: https://eref.uni-bayreuth.de/id/eprint/4035