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PIRSA:13120032

Video URL

https://pirsa.org/13120032

Electrostatics

          @misc{ scivideos_PIRSA:13120032,
            doi = {10.48660/13120032},
            url = {https://pirsa.org/13120032},
            author = {Lam, Norman},
            keywords = {},
            language = {en},
            title = {Electrostatics},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {dec},
            note = {PIRSA:13120032 see, \url{https://scivideos.org/index.php/pirsa/13120032}}
          }

Norman Lam University of Toronto

Talk numberPIRSA:13120032
DOI10.48660/13120032
Source RepositoryPIRSA
Collection
Talk Type Conference

Abstract

Electrostatic phenomena in soft matter systems are often intriguing or even counterintuitive. DNA condensation by polyvalent counterions is now a classic example by which highly-negatively charged DNA strands attract each other in the presence of poly-cations. Also Mg2+ can stabilize inverted hexagonal phases of lipid aggregates that would otherwise form lamellar phases. Here we discuss another intriguing electrostatic phenomenon: electrostatic modification of lipid membranes by poly-cations. In particular we examine how the poly-anionic nature of LPS (lipopolysaccharide) molecules is implicated in the permeability properties of LPS membranes.