Stationary shapes of axisymmetric vesicles beyond lowest-energy configurations.
basic_science · Level V
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- Record sourced from PubMed, PMID 38353299.
- Also identified by DOI 10.1039/d3sm01463k and PMC identifier 11325145.
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Abstract
We conduct a systematic exploration of the energy landscape of vesicle morphologies within the framework of the Helfrich model. Vesicle shapes are determined by minimizing the elastic energy subject to constraints of constant area and volume. The results show that pressurized vesicles can adopt higher-energy spindle-like configurations that require the action of point forces at the poles. If the internal pressure is lower than the external one, multilobed shapes are predicted. We utilize our results to rationalize experimentally observed spindle shapes of giant vesicles in a uniform AC electric field.