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University of Central Florida

Series

2002

Physics

Articles 1 - 3 of 3

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Crossover Behavior In Dynamics Of Frozen Ferrofluids (Erratum), Xiaodong Duan, Jinlong Zhang, Weili Luo Jan 2002

Crossover Behavior In Dynamics Of Frozen Ferrofluids (Erratum), Xiaodong Duan, Jinlong Zhang, Weili Luo

Faculty Bibliography 2000s

No abstract provided.


Reflective Reversed-Mode Polymer Stabilized Cholesteric Texture Light Switches, Hongwen Ren, Shin-Tson Wu Jan 2002

Reflective Reversed-Mode Polymer Stabilized Cholesteric Texture Light Switches, Hongwen Ren, Shin-Tson Wu

Faculty Bibliography 2000s

Light-switching behavior of reflective reserved-mode polymer-stabilized-cholesteric-texture (PSCT) was analyzed and validated experimentally. Our results indicate that the reflective reversed-mode PSCT offers a much higher contrast ratio and lower operating voltage than its transmissive counterpart. Effects of cell gap, birefringence, and pitch length on the contrast ratios of the reversed-mode PSCT cells were investigated. Potential applications of this device as variable optical attenuator and light shutter for telecommunication are emphasized.


Perdeuterated Cyanobiphenyl Liquid Crystals For Infrared Applications, Shin-Tson Wu, Qiong-Hua Wang, Michael D. Kempe, Julia A. Kornfield Jan 2002

Perdeuterated Cyanobiphenyl Liquid Crystals For Infrared Applications, Shin-Tson Wu, Qiong-Hua Wang, Michael D. Kempe, Julia A. Kornfield

Faculty Bibliography 2000s

Perdeuterated 4'-pentyl-4-cyanobiphenyl (D5CB) was synthesized and its physical properties evaluated and compared to those of 5CB. D5CB retains physical properties similar to those of 5CB, such as phase transition temperatures, dielectric constants, and refractive indices. An outstanding feature of D5CB is that it exhibits a much cleaner and reduced infrared absorption. Perdeuteration, therefore, extends the usable range of liquid crystals to the mid infrared by significantly reducing the absorption in the near infrared, which is essential for telecom applications.