Attenuated total reflection method of excitation of the surface polariton in the Kretschmann configuration

Surface plasmon (SP) excitations have been investigated in the attenuated total reflection (ATR) Kretschmann configuration of prism/metal/Langmuir–Blodgett (LB) films containing dyes. The emission light through the prism was observed using direct irradiation of a laser beam from air to the LB films, i.e., reverse irradiation. The emission intensities depend on the emission angles through the prism, nanostructure of metal and LB films, dye molecules, separation between metal and dye molecules, interactions of dye molecules, etc. The spectra is strongly depended on the emission angles, and the emission light was caused by multiple SP excitations. Nanostructured devices of LB films using SP excitations are described.

Download Full-text

Exploration for Identification of Sheath-Core Fiber of Ploymer

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.988.8 ◽

2014 ◽

Vol 988 ◽

pp. 8-12

Author(s):

Rui Tian Zhu ◽

Peng Zhang ◽

Feng Ming Nie

Keyword(s):

Infrared Spectroscopy ◽

Accurate Method ◽

Total Reflection ◽

Attenuated Total Reflection ◽

Polymer Fiber ◽

Reflection Method ◽

Scanning Calorimetry ◽

Microscopic Method ◽

Transmission Technique ◽

Core Fiber

In this paper, microscopic method, transmission technique and attenuated total reflection method of infrared spectroscopy and differential scanning calorimetry were investigated for analyzing the component of inner and outer layer of sheath-core polymer fiber. Results showed that transmission technique and attenuated total reflection method of infrared spectroscopy was a quick and accurate method for identification of sheath-core fiber of fiber.

Download Full-text

Photo-Induced Properties of Liquid Crystal Molecules on Alternately Assembled Charged Azobenzene Dyes and Polyelectrolyte Films Using Attenuated Total Reflection Method

MRS Proceedings ◽

10.1557/proc-598-bb11.4 ◽

1999 ◽

Vol 598 ◽

Cited By ~ 1

Author(s):

Akira Baba ◽

Takashi Kato ◽

Jun Ishikawa ◽

Futao Kaneko ◽

Kazunari Shinbo ◽

...

Keyword(s):

Liquid Crystal ◽

Self Assembly ◽

Surface Plasmon Polariton ◽

Hybrid Cell ◽

Total Reflection ◽

Attenuated Total Reflection ◽

Low Molecular Weight ◽

Reflection Method ◽

Linearly Polarized ◽

Plasmon Polariton

ABSTRACTIn this report, we describe the photo-induced in-plane alignment of nematic liquid crystal (LC) molecules, 5CB, in a hybrid cell with alternate self-assembled films of low-molecular weight azobenzene dye and polyelectrolyte on gold electrodes using the attenuated total reflection (ATR) measurement method. The molecular self-assembly process was also investigated by the ATR method. Reflectivities due to excitations of the surface plasmon polariton (SPP) were observed in the ATR properties of the LC cell. In-plane switching of the LC molecules adjacent to the aligning layer was evaluated from the ATR curves after irradiation of linearly polarized visible light to the LC cell. The sensitivity of the ATR method gives information on the alignment, tilt angle, and extent of LC reorientation in the bulk. Thus, the importance of using the molecular self-assembly processes of individual polyion-dye pairs for fabrication of new photo-aligning layers is emphasized.

Download Full-text