Optical Properties of Oriented Polymer/Dye Polarizers. 2. Ultimate Properties

Dirix, Yjl Yvo; Tervoort, Theo A.; Bastiaansen, Cwm Cees

doi:10.1021/ma960808x

Cited by 38 publications

(51 citation statements)

References 12 publications

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“…9, the polarizing efficiency of drawn poly͑ethylene terephthalate͒ blends is plotted as a function of the single-piece transmittance ͑at 600 nm͒ and a comparison is made with conventional dichroic polarizers. 20 The experimental data were obtained from drawn poly͑ethylene tereph-thalate͒ blends with a varying content of core-shell rubbers ͑see the experimental section͒ and it is shown that the performance of the scattering polarizers is virtually identical to conventional dichroic polarizers. 20 The optical properties of drawn poly͑ethylene terephtha-late͒ blends were further evaluated using polarized lightscattering measurements.…”

Section: Resultsmentioning

confidence: 99%

“…20 The experimental data were obtained from drawn poly͑ethylene tereph-thalate͒ blends with a varying content of core-shell rubbers ͑see the experimental section͒ and it is shown that the performance of the scattering polarizers is virtually identical to conventional dichroic polarizers. 20 The optical properties of drawn poly͑ethylene terephtha-late͒ blends were further evaluated using polarized lightscattering measurements. The experimental setup that was used is described in the experimental section ͑Fig.…”

Section: Resultsmentioning

confidence: 99%

“…[13][14][15][16][17][18] A perfect dichroic polarizer with a polarizing efficiency of unity absorbs at least 50% of the incident light, and consequently, the brightness of displays is adversely affected by the polarization filters. 19,20 This limited light efficiency of dichroic polarizers renewed the interest in nondichroic optical components to produce linearly polarized light. [21][22][23][24][25][26] In the past decade, several new linear polarizers based on the anisotropic scattering of light were proposed and the operating principle of these polarizers is schematically depicted in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Scattering birefringence polarizers based on oriented blends of poly(ethylene terephthalate) and core–shell particles

Dirix

Jagt

Hikmet

et al. 1998

Journal of Applied Physics

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Articles you may be interested inBirefringence measurement in polarization-sensitive optical coherence tomography using differential-envelope detection method Rev. Sci. Instrum. 81, 053705 (2010); 10.1063/1.3418834 Optical and mechanical anisotropies of oriented poly(ethylene terephthalate) films Appl. Phys. Lett. 89, 051906 (2006); 10.1063/1.2234297 High performance Feussner-type polarizers based on stretched poly(ethylene-terephthalate) filmsHere, we present the results on the optical characteristics of polymeric, linear polarizers produced from oriented, two-component, polymer blends. By a proper selection of materials and drawing conditions, the refractive index of the dispersed phase of the blend is matched with the ordinary refractive index of the birefringent continuous phase while, at the same time, a large refractive index mismatch is generated in the perpendicular direction. The films are, therefore, transparent or opaque, dependent on the polarization direction of the incident light and act as linear polarizers with a high contrast ratio ͑Ϸ1000͒ between the transparent and opaque state. These polarizers are all-polymer-based linear polarizers that operate on the anisotropic scattering of light, instead of anisotropic absorption, which offers some unique features and advantages.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Scattering birefringence polarizers based on oriented blends of poly(ethylene terephthalate) and core–shell particles

Dirix

Jagt

Hikmet

et al. 1998

Journal of Applied Physics

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“…The resulting macroscopic absorption anisotropy can be used to study the chromophores orientation and to produce polarized light thanks to the transfer of the axial orientation of the host to the low molecular weight guest. [1][2][3][4][5][6] On the other side, the polarized absorption and/or emission provide detailed information on the distribution of the orientations of macromolecules in the polymer matrixes labeled by the probe dye. [7][8][9][10][11][12][13] The optical properties of chromophores employed as dispersed additives for the preparation of polymer linear polarizers, colored filters, and molecular probes for polymer deformation are strongly affected by the chromophore tendency to anisotropically distribute along the oriented macromolecular chains of the host matrix.…”

Section: Introductionmentioning

confidence: 99%

Dichroic Properties of Bis(benzoxazolyl)stilbene and Bis(benzoxazolyl)thiophene Dispersed into Oriented Polyethylene Films: A Combined Experimental and Density Functional Theory Approach

et al. 2006

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In this work, a combination of experimental and quantum mechanical investigations is performed for the study of dichroic absorption properties of melt-processed linear low-density polyethylene (LLDPE) oriented films containing < or =0.5 wt % of either 4,4'-bis(2-benzoxazolyl)stilbene (BBS) or 2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene (BTBBT). The data acquired reveal that the film optical anisotropy and the performances as linear polarizer are strongly dependent on the molecular structure of the chromophore. In particular, the rodlike structure of BBS favors the alignment of the dye along the drawing direction of the PE film, providing dichroic ratios as high as 100 and optical performances as linear polarizer close to the pseudo-affine deformation scheme. On the contrary BTBBT, although characterized by huge anisotropic potentialities, confers the oriented film very poor dichroism and is unsuitable for linear polarizer applications. This behavior is attributed to the more complex banana-shaped structure of BTBBT dye caused by the thiophene 2,5-functionalization that limits the molecule parallel orientation to the drawing direction.

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“…[6,7] Therefore, this type of polarizer has a limited light-transmission efficiency and produces excessive heat when irradiated with strong light, restricting its application to flat-panel displays. These limitations have triggered the invention of new light-recycling techniques to fabricate nonabsorbing polarizers.…”

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confidence: 99%