Optical properties of TiO2 thin films deposited on polycarbonate by ion beam assisted evaporation

Lin, Su-Shia; Hung, Yuan-Hsun; Chen, Shin-Chi

doi:10.1016/j.tsf.2009.03.009

Cited by 19 publications

(6 citation statements)

References 39 publications

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“…The scattering of light can be effectively realized by distributing nano/microspheres as light diffusers in the transparent matrix. 7,8 Commonly used light diffusers can be roughly divided into inorganic particles and organic particles. Inorganic particles, such as titanium dioxide (TiO 2 ) and silicon dioxide (SiO 2 ), [9][10][11][12][13] are often opaque, resulting in the loss of light energy and the decrease of light transmittance, thus limiting the specific amount of addition.…”

Section: Introductionmentioning

confidence: 99%

Preparation of PP/PC light‐diffusing materials with UV‐shielding property

Zhu

Wang

et al. 2023

Polymer Composites

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In this study, we presented a one‐step melt‐blending method to fabricate polypropylene (PP)/polycarbonate (PC) light‐diffusing materials. A promising balance between haze and transmittance was obtained by the addition of small amount of PC to the matrix. On the basis of Mie scattering theory and morphology analysis, the correlation between processing conditions and light‐diffusing properties was built. Low rotor speed and high viscosity ratio were beneficial to optical properties of PP/PC composites. To extend the advanced application, two general anti‐ultraviolet additives nanoscale titanium dioxide (Nano‐TiO2) and 2‐(2‐hydroxy‐5‐methylphenyl) benzotriazole (UV‐P) were added to impart UV‐shielding property to the composites. Their specific influences on the morphology and comprehensive properties of PP/PC composites were studied. It was found that the introduction of Rayleigh scattering raised by Nano‐TiO2 could strengthen the scattering effect and cause a significant reduction in light transmittance, while UV‐P had little effect on the optical properties of the light‐diffusing composites. In summary, this study prepared the PP/PC composites with high‐performance light scattering and UV‐shielding properties applying a facile blending method, which showed a potential application in flexible lightings and LCD displays.

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Section: Introductionmentioning

confidence: 99%

Preparation of PP/PC light‐diffusing materials with UV‐shielding property

Zhu

Wang

et al. 2023

Polymer Composites

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“…TiO 2 nanostructures have attracted significant interest due to their potential for self-cleaning surfaces, air and water purification systems, photovoltaic sensors, sterilization, and hydrogen evolution. [1][2][3][4] Research on photocatalysis by TiO 2 was initiated and promoted in 1972 with the discovery of splitting of water on TiO 2 electrodes using ultraviolet light by Honda. 5 Important features that make TiO 2 so important are its chemical stability, nontoxicity, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Ni-Doped TiO2 Photocatalysts for Disinfection of Escherichia coli Bacteria

Nguyen

Duong

et al. 2021

Journal of Elec Materi

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Ni-doped TiO 2 nanoparticles have been synthesized by a modified sol-gel method. The crystal phase composition, particle size, and magnetic and optical properties of the samples were comprehensively examined using x-ray diffraction analysis, transmission electron microscopy, Brunauer-Emmett-Teller surface area analysis, Raman spectroscopy, magnetization measurements, and ultraviolet-visible (UV-Vis) absorption techniques. The results showed that the prepared Ni-doped TiO 2 samples sintered at 400°C crystallized completely in anatase phase with average particle size in the range from 8 nm to 10 nm and presented broad visible absorption. The bactericidal efficiency of TiO 2 was effectively enhanced by Ni doping, with an optimum Ni doping concentration of 6% (x = 0.06), at which 95% of Escherichia coli were killed after just 90 min of irradiation. Density functional theory (DFT) calculations revealed good agreement with the experimental data. Moreover, the Ni dopant induced magnetic properties in TiO 2 , facilitating its retrieval using a magnetic field after use, which is an important feature for photocatalytic applications.

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“…Colloidal metallic solutions are frequently used in the design of optical instruments and photonic limiters because of their photoinduced nonlinear properties [2,3]. There are two standard and usual methods for sign identification of nonlinear refractive index of nanoparticles, Z-scan [4][5][6][7] and Moiré deflectometry techniques [8][9][10][11][12][13]. In Z-scan method, the refractive index and the sign are found by drawing the diagram of the dependence of the transmitted beam intensity but in Moiré deflectometry technique, these are found by observing the Moiré fringes patterns [14].…”

Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles: Experimental Study of Sign Identification of Nonlinear Refractive Index by Moiré Deflectometry and Z-Scan Methods

2013

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Two different methods are presented for the sign identification of nonlinear refractive index () of Ag colloidal nanoparticles which are based on nonscanning Moiré deflectometry and Z-scan. In the Moiré deflectometry setup, two lasers are used, one is used as pump laser which causes thermal nonlinear effects in the sample, and the second one is used as the probe laser for monitoring these effects by Moiré deflectometry system. By observing the deflected Moiré fringes, we can determine the sign of nonlinear refractive index in real time, and there would be no need for calibration or complicated calculations. The second technique for sign identification is Z-scan. In this technique, a CW 532 nm second harmonic Nd:YAG laser with a beam power of 55 mW is used as the excitation source. Results show that the nonlinear refractive index is negative for Ag nanoparticles in pure water by both methods.

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Optical properties of TiO2 thin films deposited on polycarbonate by ion beam assisted evaporation

Cited by 19 publications

References 39 publications

Preparation of PP/PC light‐diffusing materials with UV‐shielding property

Preparation of PP/PC light‐diffusing materials with UV‐shielding property

Magnetic Ni-Doped TiO2 Photocatalysts for Disinfection of Escherichia coli Bacteria

Ag Nanoparticles: Experimental Study of Sign Identification of Nonlinear Refractive Index by Moiré Deflectometry and Z-Scan Methods

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