Modulated structures and competing interactions in amphiphilic monolayers

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Abstract
We investigate the effects of electrostatic interactions on the phase behavior and structure of insoluble Langmuir monolayers at the liquid/air interface. Both for charged and neutral monolayers, the competition between such repulsive long-range and attractive short-range interactions of the monolayer tends to stabilize modulated phases. Phase diagrams are obtained in two limits: (i) close to the liquid-gas critical point and (ii) at low temperatures.

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