Carbon Nanotubes Modification of the Conductive ITO-Layer for Orientation of Liquid Crystals Used in Electro-Optical Devices for Information Processing

Каманина, Н. В.; Kukharchik, A. A.; Kuzhakov, P. V.; Zubtcova, Yu. A.; Stepanov, R. O.; Baryshnikov, N. V.

doi:10.18083/lcappl.2015.3.109

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…The values of the used indenter are also shown. To explain the mechanical parameter improvements, high Young's module values were used, and the covalent bonding formed between the carbon atoms and the material's surfaces were taken into account, which is supported via quantum-chemical calculation for all materials treated [23][24][25][26][27][28][29][30][31].…”

Section: Resultsmentioning

confidence: 99%

“…To reveal these advantages of CNTs via the use of the LOD approach, different types of optical materials, such as metals Al and Cu [23,24], semiconductors ZnSe and ZnS [25,26], and optical crystals KBr, LiF, and MgF 2 [27][28][29], ITO conductive layers [30,31] are treated to vertically deposit the nano-objects mentioned above in order to change the refractivity, the spectral and mechanical characteristics, and the wetting phenomena of the materials.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Nanotube Coatings’ Role in Transparency, Mechanical Hardness, and Wetting Angle Increase

Каманина

2022

Coatings

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Among the different nanostructures involved in the improvement of material properties, carbon nanotubes occupy a specific place because of their small refractive index, extended surface, and large Young’s module, which can all provoke dramatic change in basic matrix material characteristics. Inorganic crystals, semiconductors, metals, conductive compounds, and some polymer structures whose surfaces are treated with carbon nanotubes demonstrate better features than the ones obtained before carbon nanotubes deposition. Thus, the areas of application for these unique nanostructure materials can be effectively extended, e.g., for optoelectronic use, in biomedicine, and display applications. In the current paper, the advantages of the laser-oriented deposition technique are shown in order to demonstrate how the main material parameters change drastically through the incorporation of carbon nanotubes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Coatings’ Role in Transparency, Mechanical Hardness, and Wetting Angle Increase

Каманина

2022

Coatings

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“…The mechanical characteristics, resistive parameters, and alignment ability can be modified dramatically. Our own steps made previously in this direction are shown in papers [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Perspective Coatings Based on Structured Conducting ITO Thin Films for General Optoelectronic Applications

Toikka,

Ilin,

Kamanina

2024

Coatings

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In many electro-optical devices, the conductive layer is an important key functional element. Among others, unique indium tin oxide (ITO) contacts take priority. ITO structure is widely used as the optical transparent and electrically conductive material in general optoelectronics, biosensors and electrochemistry. ITO is one of the key elements in the liquid crystal (LC) displays, spatial light modulators (SLMs) and LC convertors. It should be mentioned that not only the morphology of this layer structure but also the surface features play an important role in the study of the physical parameters of the ITO. In order to switch the surface properties (roughness, average tilt angle and surface free energy) of the ITO via the laser-oriented deposition (LOD) method, carbon nanotubes (CNTs) were implanted. In the LOD technique, the CO2 laser (λ = 10.6 μm, P = 30 W) with the control electric grid was used. The switching of the deposition conditions was provided via the varying electrical strength of the control grid in the range of 100–600 V/cm. The diagnostics of the surfaces were performed using AFM analysis and wetting angle measurements. The components of the surface free energy (SFE) were calculated using the OWRK method. The main experimental results are as follows: the roughness increases with a rise in the electric field strength during the deposition of the CNTs; the carbon nanotubes provide a higher level of the dispersive component of SFE (25.0–31.4 mJ/m2 against 22.2 mJ/m2 in the case of pure ITO); the CNTs allow an increase in the wetting angle of the 5CB liquid crystal drops from 38.35° to 58.95°. Due to the possibility of the switching properties of the ITO/CNT surfaces, these modifications have potential interest in microfluidics applications and are useful for the liquid crystal’s electro-optics.

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“…Последний эффект был установлен и представлен для обсуждения в работах [28][29][30] Таким образом, вполне обоснованно было сделано предположение о реальности применения такового ориентационного рельефа для ориентирования ЖК-мезофазы с введенными в нее эритроцитами. Уточним, что первые эксперименты по исследованию рефрактивных параметров ЖК с такими биообъектами, как ДНК и проводящего покрытия с углеродными нанотрубками, выполняющего роль ориентанта, были выполнены в работах [26,34], а эффективность применения межмолекулярного комплекса на основе системы COANP-С 70 , повышающего поляризационные свойства композитов, была показана в публикациях [35][36][37].…”

Section: Introductionunclassified

Erythrocytes and Relative Bioobjects Aligning in Modified Liquid Crystal Cells

Каманина¹,

Likhomanova²,

Kamanin³

et al. 2017

Liq. Cryst. and their Appl.

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В работе представлены результаты исследования по ориентированию, фиксации и визуализации биообъектов на примере клеток крови-эритроцитов. Рассмотрено влияние усовершенствованного рельефа на поверхности подложек модифицированных жидкокристаллических ячеек за счет применения ориентированных углеродных нанотрубок, а также при использовании межмолекулярного комплекса для ориентации клеток крови. Приведены микрофотографии заполненной ЖК-ячейки, демонстрирующие четкие области ориентации эритроцитов. Даны качественные рассуждения о механизмах ориентации эритроцитов и других биообъектов в объеме ЖК. Показано, что представленные данные согласуются с результатами по фиксации и визуализации клеток крови, полученными ранее при использовании полимерных ориентирующих покрытий.

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Carbon Nanotubes Modification of the Conductive ITO-Layer for Orientation of Liquid Crystals Used in Electro-Optical Devices for Information Processing

Cited by 5 publications

References 6 publications

Carbon Nanotube Coatings’ Role in Transparency, Mechanical Hardness, and Wetting Angle Increase

Carbon Nanotube Coatings’ Role in Transparency, Mechanical Hardness, and Wetting Angle Increase

Perspective Coatings Based on Structured Conducting ITO Thin Films for General Optoelectronic Applications

Erythrocytes and Relative Bioobjects Aligning in Modified Liquid Crystal Cells

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