Linear Polarizers Based on Oriented Polymer Blends

✍ Scribed by Henri Jagt; Yvo Dirix; Rifat Hikmet; Cees Bastiaansen

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 258 KB
• Volume: 10
• Category: Article
• ISSN: 0935-9648
• DOI: 10.1002/(sici)1521-4095(199808)10:12<934::aid-adma934>3.0.co;2-o

✦ Synopsis

Traditionally, birefringent, double refracting crystals and, more commonly, polarizers based on oriented polymers comprising dichroic additives are employed to generate linearly polarized light. [1±4] The latter are based on selective absorption of light, with its obvious drawbacks. Here we introduce uniaxially oriented, polymer blend sheet-polarizers that allow generation and analysis of polarized light through anisotropic scattering. By proper selection of materials and processing conditions, phase-segregated polymer blends are produced in which the refractive index of the dispersed phase matches the ordinary refractive index Fig. 3. Absorbance spectra of the 4H6T film deposited on KAP taken with light linearly polarized in the two perpendicular directions giving the maximum and the minimum intensity of the absorption bands. Inset: sketch of the molecular orientation with respect to the crystal orientation of the KAP substrate.