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Abstract
With Maxwell displacement current (MDC) measurement coupled with optical second harmonic generation (SHG) measurement, the dielectric polarization phenomena of monolayers can be examined. We have been developing a novel MDC–SHG experimental system, and analyzing the dielectric monolayers at the air–water interface. From theoretical side, based on a rod molecule model, formula to express the linear and nonlinear polarization of monolayers with C ∞-symmetry have been derived using orientational order parameters. On the other hand, using the developed experimental system, the orientational order parameter has been determined with surface pressure–molecular area isotherm ( π– A isotherm) for liquid crystalline monolayers. Further, phase transitions of monolayers that accompanies the monolayer structural change has been successfully detected.
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Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
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