Nanocomposite Metamaterials Based on Self-assembled Titanium Dioxide Rolls with Embedded Gold Nanoparticles

Kutrovskaya, S.; Kucherik, A. O.; Osipov, A.; Samyshkin, Vlad; Istratov, A. V.; Kavokin, Alexey

doi:10.1038/s41598-019-43588-7

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…We used pure titanium bulk crystals produced by LTd Ligamet (Moscow, Russia) as a target for laser ablation [ 14 , 15 ]. A titanium crystal was irradiated by nanosecond laser pulses from IR-source L-Designer made by Ateco (Moscow region, Russia).…”

Section: Methodsmentioning

confidence: 99%

Titanium-Based Metasurfaces for Optoelectronics

Kavokina,

Samyshkin,

Cao

et al. 2023

Nanomaterials

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We report on the fabrication method that enables the development of transparent conductive metasurfaces capable of the resonant absorption of light in specific frequency bands. The approach is based on embedding linear sp-carbon chains and metallic nanoparticles in a porous matrix of titanium dioxide (TiO2). We develop a blading technique for the formation of a periodical grating of TiO2 microtubes at the macroscale. The method allowed us to maintain the periodicity of an array of microtubes with an accuracy of ±5%. Tuning the diameter of the tubes and the concentration of metallic nanoparticles, we achieved the regime of strong resonant absorption of the fabricated complex metasurface in the visible range. Computer simulations helped revealthe regime of TE/TM-polarized laser pumping that allowed for the most efficient transformation of light energy into electric current flow. In the studied structures, the sp-carbon clusters embedded inside transparent titanium dioxide tubes play the role of atomic wires. The interplay between efficient conductivity through carbon wires and the plasmon-enhanced absorption of light allows the design of photodiode structures based on periodical metasurfaces and characterized by highly selective optical sensitivity.

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Section: Methodsmentioning

confidence: 99%

Titanium-Based Metasurfaces for Optoelectronics

Kavokina,

Samyshkin,

Cao

et al. 2023

Nanomaterials

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“…Nanocomposite membranes that can manipulate heterogeneous surface potentials enhance rapid bone regeneration by enhancing RGD (Arg-Gly-Asp) peptide binding and stem cell mechanical sensing, providing an alternative strategy for constructing novel dental stem cell scaffolds to repair intact mature bone structures ( Li et al, 2020a ). In addition, some scientists found that titanium-coated gold nanoparticles enhanced the osteogenic differentiation of human adipose-derived stem cells by increasing the Wnt/β-catenin signaling pathway ( Kutrovskaya et al, 2019 ).…”

Section: Role Of Cell Optimization In Oral Diseasesmentioning

confidence: 99%

Research progress in cell therapy for oral diseases: focus on cell sources and strategies to optimize cell function

Wang,

Zhao,

Yang

et al. 2024

Front. Bioeng. Biotechnol.

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In recent years, cell therapy has come to play an important therapeutic role in oral diseases. This paper reviews the active role of mesenchymal stem cells, immune cell sources, and other cells in oral disorders, and presents data supporting the role of cell therapy in oral disorders, including bone and tooth regeneration, oral mucosal disorders, oral soft tissue defects, salivary gland dysfunction, and orthodontic tooth movement. The paper will first review the progress of cell optimization strategies for oral diseases, including the use of hormones in combination with stem cells, gene-modified regulatory cells, epigenetic regulation of cells, drug regulation of cells, cell sheets/aggregates, cell-binding scaffold materials and hydrogels, nanotechnology, and 3D bioprinting of cells. In summary, we will focus on the therapeutic exploration of these different cell sources in oral diseases and the active application of the latest cell optimization strategies.

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“…The perfect light absorption of photocatalysts modified by metamaterials is due to their spatial architecture, which can be fabricated through different methods such as the self-assembly of semiconductors with plasmonic nanoparticles. 153 6.2. Tunable Band Gap.…”

Section: Insights Of 1d/2d Photocatalysismentioning

confidence: 99%

“…The design and modification of spatially ordered metamaterials made of periodically modulated nanostructures (e.g., semiconductors and plasmonic nanoparticles) can result in 100% absorption of the irradiated light. The perfect light absorption of photocatalysts modified by metamaterials is due to their spatial architecture, which can be fabricated through different methods such as the self-assembly of semiconductors with plasmonic nanoparticles …”

Section: Strategies For Enhancing the Photocatalytic Performancementioning

confidence: 99%

Review of Hybrid 1D/2D Photocatalysts for Light-Harvesting Applications

Nawaz

Goudarzi

Asghari

et al. 2021

ACS Appl. Nano Mater.

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Among the 17 Sustainable Development Goals (SDGs), we find that SDG7 (clean and affordable energy) and SDG13 (climate action) need to be urgently addressed, also because they are intimately related. Population growth, which has followed an exponential curve for the past two centuries, makes these challenges particularly daunting because growth in energy demand follows the same trend. A variety of renewable energy technologies have been developed to meet the growing need for energy and simultaneously reduce greenhouse gas emissions. Among these, solar energy is considered to be particularly promising because of the relative abundance of sunlight and the progressive reduction in cost. Recent efforts have also focused on developing nanostructured photocatalysts because of their potential for high-performance sustainable energy technologies. Here we review the properties of hybrid one-dimensional/two-dimensional (1D/2D) photocatalysts, which are being widely studied because of several interesting features, including structural (particle/crystallite size, phase composition, specific surface area, surface hydroxyls, and lattice defects) and physical/chemical (chemical stability and optoelectronic, electromagnetic, and photophysical properties) properties. By tuning of the band gap and optimization of the recombination rate of photogenerated charge carriers, these systems can optimize solar energy harvesting beyond the visible spectrum, resulting in an enhanced photocatalytic performance. In particular, we will discuss the following subtopics: classification of the materials' architecture, synthesis techniques, prominent factors that influence the photocatalytic activity, prospects in energy conversion and storage (e.g., H 2 production), bacterial disinfection, pollutant degradation, batteries, and CO 2 conversion into valueadded chemicals. We conclude by describing broad perspectives on future studies of 1D/2D photocatalysts.

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Nanocomposite Metamaterials Based on Self-assembled Titanium Dioxide Rolls with Embedded Gold Nanoparticles

Cited by 8 publications

References 32 publications

Titanium-Based Metasurfaces for Optoelectronics

Titanium-Based Metasurfaces for Optoelectronics

Research progress in cell therapy for oral diseases: focus on cell sources and strategies to optimize cell function

Review of Hybrid 1D/2D Photocatalysts for Light-Harvesting Applications

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