Title :
Study of linear and nonlinear dielectric properties of monolayers by Maxwell-Displacement Current and optical second harmonic generation measurements
Author :
Tojima, Atsushi ; Manaka, Taka-aki ; Iwamoto, Mitsumasa
Author_Institution :
Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan
Abstract :
In order to clarify the dielectric properties of organic monolayers at the air-water interface, the formula of polarization of organic monolayers with C∞v symmetry have been derived, using orientational order parameters expressed by Legendre polynomials. It is shown that Maxwell Displacement Current (MDC) measurement coupled with optical second harmonic generation (SHG) measurement is helpful for the determination of these orientational order parameters. Monolayers of liquid crystals on the air-water interface were examined during monolayer compression and the orientational order parameters were determined
Keywords :
Legendre polynomials; dielectric polarisation; dielectric thin films; liquid crystals; molecular orientation; monolayers; optical harmonic generation; organic compounds; Legendre polynomial; Maxwell displacement current; air-water interface; dielectric polarization; linear dielectric properties; liquid crystal; nonlinear dielectric properties; optical second harmonic generation; organic monolayer; orientational order parameter; Current measurement; Dielectric measurements; Displacement measurement; Electrodes; Liquid crystals; Nonlinear optics; Optical films; Optical harmonic generation; Optical polarization; Polynomials;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973742
