Light refraction in aqueous suspensions of diamond particles

Voitylov, A. V.; Veso, O.S.; Петров, М. П.; Rolich, V I; Trusov, A. A.; Vojtylov, V.V.

doi:10.1016/j.colsurfa.2017.10.072

Cited by 4 publications

(5 citation statements)

References 28 publications

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“…To achieve high refractive index materials, several methodologies have been implemented. These methodologies are categorized into two main groups; incorporation of heavy metal atoms, such as sulfur and/or halogen into the polymer matrices [ 252 ] and polymer composite fabrication with high refractive index from inorganic and metal NPs [ 253 , 254 , 255 , 256 , 257 , 258 ]. In both methodologies, there are challenges that limit this effort to increase refractive index.…”

Section: Optical Parametersmentioning

confidence: 99%

“…For example, the achievable refractive index is 1.84 in synthesizing poly (sulfur-random-(1,3,5-triisopropenylbenzene)) [ 259 ]. On the other hand, the second methodology, there are possibility of fabricating various NPs as fillers, such as zirconium oxide (ZrO 2 ) [ 253 ], titanium oxide (TiO 2 ) [ 254 , 260 ], alumina oxide [ 255 ], gold [ 256 ] and nanodiamond [ 257 , 258 ]. However, two main problems have to be taken into considerations; which are relatively high surface energy and poor compatibility with polymer backbones, resulting in inorganic NPs agglomeration during insertion.…”

Section: Optical Parametersmentioning

confidence: 99%

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A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

et al. 2020

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Polymer electrolytes and composites have prevailed in the high performance and mobile marketplace during recent years. Polymer-based solid electrolytes possess the benefits of low flammability, excellent flexibility, good thermal stability, as well as higher safety. Several researchers have paid attention to the optical properties of polymer electrolytes and their composites. In the present review paper, first, the characteristics, fundamentals, advantages and principles of various types of polymer electrolytes were discussed. Afterward, the characteristics and performance of various polymer hosts on the basis of specific essential and newly published works were described. New developments in various approaches to investigate the optical properties of polymer electrolytes were emphasized. The last part of the review devoted to the optical band gap study using two methods: Tauc’s model and optical dielectric loss parameter. Based on recently published literature sufficient quantum mechanical backgrounds were provided to support the applicability of the optical dielectric loss parameter for the band gap study. In this review paper, it was demonstrated that both Tauc’s model and optical dielectric loss should be studied to specify the type of electron transition and estimate the optical band gap accurately. Other parameters such as absorption coefficient, refractive index and optical dielectric constant were also explored.

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Section: Optical Parametersmentioning

confidence: 99%

Section: Optical Parametersmentioning

confidence: 99%

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

et al. 2020

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“…Several methods to obtain high refractive index materials have been previously published. These methods can be categorized into two approaches; one is the incorporation of heavy atoms such as sulfur and/or a halogen into the polymer [12], and the other is the fabrication of polymer composites with high refractive index inorganic or metal nanoparticles (NPs) [13,14,15,16,17,18,19,20,21,22]. There are some challenges to increasing the refractive index in each approach.…”

Section: Introductionmentioning

confidence: 99%

“…The maximum refractive index reported for a material prepared using this approach is 1.84, which was obtained for poly(sulfur-random-(1,3,5-triisopropenylbenzene)) [23]. In the second case, a variety of NPs such as those of zirconium oxide (ZrO 2 ) [13], titanium oxide (TiO 2 ) [14,15,16,17,18], alumina oxide [19], gold [20], and nanodiamond [21,22] have been used as nano-sized fillers. However, inorganic NPs agglomerate in the polymer matrix due to their high surface energies and low compatibilities with the polymer.…”

Section: Introductionmentioning

confidence: 99%

Preparation of High Refractive Index Composite Films Based on Titanium Oxide Nanoparticles Hybridized Hydrophilic Polymers

et al. 2019

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Optical materials with high refractive index (n) have been rapidly improved because of urgent demands imposed by the development of advanced photonic and electronic devices such as solar cells, light emitting diodes (LED and Organic LED), optical lenses and filters, anti-reflection films, and optical adhesives. One successful method to obtain high refractive index materials is the blending of metal oxide nanoparticles such as TiO2 and ZrO2 with high n values of 2.1–2.7 into conventional polymers. However, these nanoparticles have a tendency to agglomerate by themselves in a conventional polymer matrix, due to the strong attractive forces between them. Therefore, there is a limitation in the blending amount of inorganic nanoparticles. In this paper, various hydrophilic polymers such as poly(N-hydroxyl acrylamide) (pHEAAm), poly(vinyl alcohol), poly(ethylene glycol), and poly(acrylic acid) were examined for preparation of high refractive index film based on titanium oxide nanoparticle (TiNP) dispersed polymer composite. The hydrogen bonding sites in these hydrophilic polymers would improve the dispersibility of inorganic nanoparticles in the polymer matrix. As a result, pHEAAm exhibited higher compatibility with titanium oxide nanoparticles (TiNPs) than other water-soluble polymers. Transparent hybrid films were prepared by mixing pHEAAm with TiNPs and drop casting the mixture onto a glass plate. The refractive indices of the films were in good agreement with calculated values. The compatibility of TiNPs with pHEAAm was dependent on the surface characteristics of TiNPs. TiNPs with the highest observed compatibility could be hybridized with pHEAAm at concentrations of up to 90 wt%, and the refractive index of the corresponding film reached 1.90. The high compatibility of TiNPs with pHEAAm may be related to the hydrophilicity and amide and hydroxyl moieties of pHEAAm, which cause hydrogen bond formation on the TiO2 surface. The obtained thin film was slightly yellow due to the color of the original TiNP dispersion; however, the transmittance of the film was higher than 80% in the wavelength range from 480 to 900 nm.

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“…Moreover, the required pumping power in thermal systems depends on rheological properties; therefore, the rheological properties should also be evaluated to have a perfect design [24][25][26][27][28][29][30]. Researchers have also investigated the optical specifications [31][32][33], surface tension and wetting behavior [34] and electrical properties of nanofluids [35][36][37][38][39] due to their importance in the design of solar energy and electronic-based devices.…”

Section: Introductionmentioning

confidence: 99%

Nanofluids in the Service of High Voltage Transformers: Breakdown Properties of Transformer Oils with Nanoparticles, a Review

2018

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The continuous development of electrical systems and high voltage transformers builds the need for looking for new insulating media or to improve the insulating properties of commercially available transformer oils (TO) by various modification techniques. One of these techniques is the modification of existing mineral oils by the addition of different types of nanoparticles in various concentrations. These types of materials, suspensions of nanoparticles called nanofluids, have found numerous applications in the energy industry, especially in heat exchanger systems and solar cells. Much research has been done on attempts to replace mineral oils (MO), which are harmful for the environment, with natural ester oils (NE), but to make this possible, it is necessary to improve the insulating properties of these oils, for example by adding nanoparticles. This paper presents an extensive overview of the insulating properties; including for AC, DC and the lightning impulse breakdown voltage; for both mineral and natural ester oils containing various type of nanoparticles (NP). It is presented that the use of nanofluids could improve the efficiency of existing high voltage infrastructures with a low financial cost.

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Light refraction in aqueous suspensions of diamond particles

Cited by 4 publications

References 28 publications

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

A Comprehensive Review on Optical Properties of Polymer Electrolytes and Composites

Preparation of High Refractive Index Composite Films Based on Titanium Oxide Nanoparticles Hybridized Hydrophilic Polymers

Nanofluids in the Service of High Voltage Transformers: Breakdown Properties of Transformer Oils with Nanoparticles, a Review

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