Role of SiO2 optically active mediators to tailor optical and electro-optical properties of ferroelectric liquid crystalline nanocomposites

Analysis methods developed specifically to determine the presence of ink and other optically active components in paper machine white waters or other process effluents are not available. It is generally more interest¬ing to quantify the effect of circulation water contaminants on end products. This study compares optical techniques to quantify the dirt in process water by two methods for test media preparation and measurement: direct process water filtration on a membrane foil and low-grammage sheet formation. The results show that ink content values obtained from various analyses cannot be directly compared because of fundamental issues involving test media preparation and the varied methodologies used to formulate the results, which may be based on different sets of assumptions. The use of brightness, luminosity, and reflectance and the role of scattering measurements as a part of ink content analysis are discussed, along with fine materials retention and measurement media selection. The study concludes with practical tips for case-dependent measurement methodology selection.

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Self-Assembly Optical Components

MRS Proceedings ◽

10.1557/proc-771-10.10 ◽

2003 ◽

Vol 771 ◽

Cited By ~ 2

Author(s):

Pavel I. Lazarev ◽

Michael V. Paukshto ◽

Elena N. Sidorenko

Keyword(s):

Optical Properties ◽

Self Assembly ◽

Crystalline State ◽

Liquid Crystalline ◽

Film Deposition ◽

X Ray Diffraction ◽

Optical Components ◽

Crystal Film ◽

Solid Film ◽

Thin Crystal

AbstractWe report a new method of Thin Crystal Film deposition. In the present paper we describe the method of crystallization, structure, and optical properties of Bisbenzimidazo[2,1-a:1',2',b']anthra[2,1,9-def:6,5,10-d'e'f']-diisoquinoline-6,9-dion (mixture with cis-isomer) (abbreviated DBI PTCA) sulfonation product. The Thin Crystal Film has a thickness of 200-1000 nm, with anisotropic optical properties such as refraction and absorption indices. X-ray diffraction data evidences a lyotropic liquid crystalline state in liquid phase and crystalline state in solid film. Anisotropic optical properties of the film make it useful in optical devices, e.g. liquid crystal displays.

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The main role of thermal annealing in controlling the structural and optical properties of ITO thin film layer

Optical Materials ◽

10.1016/j.optmat.2021.110866 ◽

2021 ◽

Vol 113 ◽

pp. 110866 ◽

Cited By ~ 1

Author(s):

Moustafa Ahmed ◽

Ahmed Bakry ◽

Ammar Qasem ◽

Hamed Dalir

Keyword(s):

Thin Film ◽

Optical Properties ◽

Thermal Annealing ◽

Main Role ◽

Structural And Optical Properties ◽

Thin Film Layer ◽

Film Layer

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Role of the Anilinium Ion on the Selective Polymerization of Anilinium 2-Acrylamide-2-methyl-1-propanesulfonate

Polymers ◽

10.3390/polym13142349 ◽

2021 ◽

Vol 13 (14) ◽

pp. 2349

Author(s):

Alain Salvador Conejo-Dávila ◽

Marco Armando Moya-Quevedo ◽

David Chávez-Flores ◽

Alejandro Vega-Rios ◽

Erasto Armando Zaragoza-Contreras

Keyword(s):

Cyclic Voltammetry ◽

Optical Properties ◽

Thermal Properties ◽

Free Radical ◽

1H Nmr ◽

Molecular Interactions ◽

13C Nmr ◽

Oxidative Polymerization ◽

Cyclic Voltammetry Analysis

The development of anilinium 2-acrylamide-2-methyl-1-propanesulfonate (Ani-AMPS) monomer, confirmed by 1H NMR, 13C NMR, and FTIR, is systematically studied. Ani-AMPS contains two polymerizable functional groups, so it was submitted to selective polymerization either by free-radical or oxidative polymerization. Therefore, poly(anilinium 2-acrylamide-2-methyl-1-propanesulfonic) [Poly(Ani-AMPS)] and polyaniline doped with 2-acrylamide-2-methyl-1-propanesulfonic acid [PAni-AMPS] can be obtained. First, the acrylamide polymer, poly(Ani-AMPS), favored the π-stacking of the anilinium group produced by the inter- and intra-molecular interactions and was studied utilizing 1H NMR, 13C NMR, FTIR, and UV-Vis-NIR. Furthermore, poly(Ani-AMPS) fluorescence shows quenching in the presence of Fe2+ and Fe3+ in the emission spectrum at 347 nm. In contrast, the typical behavior of polyaniline is observed in the cyclic voltammetry analysis for PAni-AMPS. The optical properties also show a significant change at pH 4.4. The PAni-AMPS structure was corroborated through FTIR, while the thermal properties and morphology were analyzed utilizing TGA, DSC (except PAni-AMPS), and FESEM.

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Role of impurities on the optical properties of rectangular graphene flakes

Physical Review Materials ◽

10.1103/physrevmaterials.2.014001 ◽

2018 ◽

Vol 2 (1) ◽

Cited By ~ 6

Author(s):

Z. S. Sadeq ◽

Rodrigo A. Muniz ◽

J. E. Sipe

Keyword(s):

Optical Properties ◽

Graphene Flakes

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Effect of dopant concentration and the role of ZnS shell on optical properties of Sm3+ doped CdS quantum dots

RSC Advances ◽

10.1039/d0ra08056j ◽

2021 ◽

Vol 11 (14) ◽

pp. 7961-7971

Author(s):

N. D. Vinh ◽

P. M. Tan ◽

P. V. Do ◽

S. Bharti ◽

V. X. Hoa ◽

...

Keyword(s):

Quantum Dots ◽

Optical Properties ◽

Dopant Concentration ◽

Core Shell ◽

Cds Quantum Dots ◽

Cds Qds

The role of samarium (Sm) dopant on the structural, morphological, and optical properties of CdS QDs and CdS/ZnS core/shell QDs was methodically reported.

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