Electromechanical limits of polymersomes. Aranda-Espinoza, H., Bermudez, H., Bates, F. S., & Discher, D. E. Phys Rev Lett, 87(20):208301, 2001. doi abstract bibtex Self-assembled membranes of amphiphilic diblock copolymers enable comparisons of cohesiveness with lipid membranes over the range of hydrophobic thicknesses d = 3-15 nm. At zero mechanical tension the breakdown potential V-c for polymersomes with d = 15 mn is 9 V, compared to 1 V for liposomes with d = 3 mn. Nonetheless, electromechanical stresses at breakdown universally exhibit a V-c(2) dependence, and membrane capacitance shows the expected strong d dependence, conforming to simple thermodynamic models. The viscous nature of the diblock membranes is apparent in the protracted postporation dynamics.
@article{Aranda-Espinoza2001a,
title = {{E}lectromechanical limits of polymersomes},
author = {Helim Aranda-Espinoza and Harry Bermudez and Frank S. Bates and Dennis E. Discher},
journal = {Phys Rev Lett},
year = {2001},
number = {20},
pages = {208301},
volume = {87},
abstract = {{S}elf-assembled membranes of amphiphilic diblock copolymers enable comparisons of cohesiveness with lipid membranes over the range of hydrophobic thicknesses d = 3-15 nm. {A}t zero mechanical tension the breakdown potential {V}-c for polymersomes with d = 15 mn is 9 {V}, compared to 1 {V} for liposomes with d = 3 mn. {N}onetheless, electromechanical stresses at breakdown universally exhibit a {V}-c(2) dependence, and membrane capacitance shows the expected strong d dependence, conforming to simple thermodynamic models. {T}he viscous nature of the diblock membranes is apparent in the protracted postporation dynamics.},
doi = {10.1103/PhysRevLett.87.208301}
}
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