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Journal articles on the topic 'Particules nanostructurées'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Maciulis, Vincentas, Almira Ramanaviciene, and Ieva Plikusiene. "Recent Advances in Synthesis and Application of Metal Oxide Nanostructures in Chemical Sensors and Biosensors." Nanomaterials 12, no. 24 (2022): 4413. http://dx.doi.org/10.3390/nano12244413.

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Nanostructured materials formed from metal oxides offer a number of advantages, such as large surface area, improved mechanical and other physical properties, as well as adjustable electronic properties that are important in the development and application of chemical sensors and biosensor design. Nanostructures are classified using the dimensions of the nanostructure itself and their components. In this review, various types of nanostructures classified as 0D, 1D, 2D, and 3D that were successfully applied in chemical sensors and biosensors, and formed from metal oxides using different synthes

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Salvat-Pujol, Francesc, Harald O. Jeschke, and Roser Valentí. "Simulation of electron transport during electron-beam-induced deposition of nanostructures." Beilstein Journal of Nanotechnology 4 (November 22, 2013): 781–92. http://dx.doi.org/10.3762/bjnano.4.89.

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We present a numerical investigation of energy and charge distributions during electron-beam-induced growth of tungsten nanostructures on SiO2 substrates by using a Monte Carlo simulation of the electron transport. This study gives a quantitative insight into the deposition of energy and charge in the substrate and in the already existing metallic nanostructures in the presence of the electron beam. We analyze electron trajectories, inelastic mean free paths, and the distribution of backscattered electrons in different compositions and at different depths of the deposit. We find that, while in

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Wahab Basim Mahdi, Sinan Mohammed Hassan, and Zaid Ali Hussein. "Synthesis of NiO: BaO nano structure by chemical method with Antibacterial activity to Escherichia coli, Klebsiella spp., Staphylococcus aureus, Staphylococcus epedermidis andcandida spp." International Journal of Science and Research Archive 13, no. 1 (2024): 2446–54. http://dx.doi.org/10.30574/ijsra.2024.13.1.1885.

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Nanostructured materials have garnered significant attention due to their remarkable chemical and physical characteristics. Because of their exceptional qualities and potential uses in technology. Nanostructured transition metal oxides are one of the many nanomaterials that need particular attention. The goal of this study was to synthesize nickel oxide and barium oxide nanostructures by the reaction of Nano powders: nickel sulphate NiSO4, barium chloride BaCl3, and molten sodium hydroxide, potassium hydroxide (NaOH: KOH) and examine their physical and biological properties. According to the r

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Lee, Jinho, Donghwi Cho, Haomin Chen, Young-Seok Shim, Junyong Park, and Seokwoo Jeon. "Proximity-field nanopatterning for high-performance chemical and mechanical sensor applications based on 3D nanostructures." Applied Physics Reviews 9, no. 1 (2022): 011322. http://dx.doi.org/10.1063/5.0081197.

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In this era of the Internet of Things, the development of innovative sensors has rapidly accelerated with that of nanotechnology to accommodate various demands for smart applications. The practical use of three-dimensional (3D) nanostructured materials breaks several limitations of conventional sensors, including the large surface-to-volume ratio, precisely tunable pore size and porosity, and efficient signal transduction of 3D geometries. This review provides an in-depth discussion on recent advances in chemical and mechanical sensors based on 3D nanostructures, which are rationally designed

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Wiederrecht, Gary P. "(Invited) Dynamics of Light-Matter Interactions in Plasmonic Optical Cavities for Characterizing Nanostructures Relevant to Energy Conversion and Photocatalysis." ECS Meeting Abstracts MA2023-01, no. 37 (2023): 2168. http://dx.doi.org/10.1149/ma2023-01372168mtgabs.

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Optical cavities are an established means to increase light-matter interactions with a wide range molecules, nanostructures and bulk materials. The use of an optical cavity to increase the likelihood of photon absorption by a material has clear potential for being of value for optical energy conversion and photocatalysis. Furthermore, optical cavities can significantly alter excited state dynamics due to the potential for Purcell effects that increase radiative rates of emission of a given material, molecule, or nanostructure. These dynamic changes can serve as a sensing mechanism of cavity im

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Shah, Rushil, Abhijit Saha, Zahraa Najah, et al. "Role of Quantum Dots and Nanostructures in Photovoltaic Energy Conversion." E3S Web of Conferences 552 (2024): 01096. http://dx.doi.org/10.1051/e3sconf/202455201096.

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Nanostructures and quantum dots have substantial effects on enhancing photovoltaic energy conversion efficiency, as evidenced in this comprehensive study. Materials that are nanostructured and nanosized particles are commonly used to address the urgent issues related to energy conversion. The use of nanostructured substances to address issues with energy and natural resources has garnered a lot of interest lately. Directional nanostructures in particular show promise for the conversion, collection, and storage of energy. Due to their unique properties, such as electrical conductivity, mechanic

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Candemir, Duygu, and Filiz Boran. "Size Controllable Synthesis and Characterization of CuO Nanostructure." Materials Science Forum 915 (March 2018): 98–103. http://dx.doi.org/10.4028/www.scientific.net/msf.915.98.

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In this study, copper oxide (CuO) nanostructures were successfully prepared by adding EG (ethylene glycol) and PEG (4000, 8000) (polyethylene glycol) via an in-situ chemical precipitation method. EG and PEG (4000, 8000) were effective for changing the particular size of CuO and we examined the effects of drying type such as freeze drying, muffle and horizontal furnace on the size of CuO nanostructure. The structure, morphology and elemental analysis of CuO nanostructure were analyzed by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and energy dispersive X-ray sp

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8

Chen, Yulin, Ping Ma, and Shuangying Gui. "Cubic and Hexagonal Liquid Crystals as Drug Delivery Systems." BioMed Research International 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/815981.

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Lipids have been widely used as main constituents in various drug delivery systems, such as liposomes, solid lipid nanoparticles, nanostructured lipid carriers, and lipid-based lyotropic liquid crystals. Among them, lipid-based lyotropic liquid crystals have highly ordered, thermodynamically stable internal nanostructure, thereby offering the potential as a sustained drug release matrix. The intricate nanostructures of the cubic phase and hexagonal phase have been shown to provide diffusion controlled release of active pharmaceutical ingredients with a wide range of molecular weights and polar

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9

Lee, Seunggi, Jae Han Chung, Yun Haeng Cho, Donghwi Cho, and Young-Seok Shim. "Research Trends in One-dimensional Nanostructures based Gas Sensors fabricated by Glancing Angle Deposition." Ceramist 26, no. 3 (2023): 290–302. http://dx.doi.org/10.31613/ceramist.2023.26.3.06.

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One-dimensional (1D) nanostructures allow for precise control of geometrical size and shape, offering greater design flexibility than other nanostructures. 1D nanostructures, in particular, hold immense potential for revolutionizing the gas sensor field, owing to their extensive surface areas conducive to chemical reactions. To harness this potential, researchers have dedicated their efforts to developing fabrication methods that incorporate 1D nanostructures into gas sensor applications. Various techniques have been explored, including hydrothermal synthesis, electrospinning, sol-gel processe

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Adamek, Michał, Oleksandr Pastukh, Magdalena Laskowska, Agnieszka Karczmarska, and Łukasz Laskowski. "Nanostructures as the Substrate for Single-Molecule Magnet Deposition." International Journal of Molecular Sciences 25, no. 1 (2023): 52. http://dx.doi.org/10.3390/ijms25010052.

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Anchoringsingle-molecule magnets (SMMs) on the surface of nanostructures is gaining particular interest in the field of molecular magnetism. The accurate organization of SMMs on low-dimensional substrates enables controlled interactions and the possibility of individual molecules’ manipulation, paving the route for a broad range of nanotechnological applications. In this comprehensive review article, the most studied types of SMMs are presented, and the quantum-mechanical origin of their magnetic behavior is described. The nanostructured matrices were grouped and characterized to outline to th

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Culhane, Kyle, Ke Jiang, Aaron Neumann, and Anatoliy O. Pinchuk. "Laser-Fabricated Plasmonic Nanostructures for Surface-Enhanced Raman Spectroscopy of Bacteria Quorum Sensing Molecules." MRS Advances 2, no. 42 (2017): 2287–94. http://dx.doi.org/10.1557/adv.2017.98.

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ABSTRACTA laser deposition technique, based on the photo-reduction of silver ions from an aqueous solution, was used to fabricate silver nanostructure surfaces on glass cover slips. The resulting silver nanostructures exhibited plasmonic properties, which show promise in applications towards surface enhanced Raman spectroscopy (SERS). Using the standard thiophenol, the enhancement factor calculated for the deposits was approximately ∼106, which is comparable to other SERS-active plasmonic nanostructures fabricated through more complex techniques, such as electron beam lithography. The silver n

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Hasan, Mohammad Nasim, Sheikh Mohammad Shavik, Kazi Fazle Rabbi, Khaled Mosharraf Mukut, and Md Muntasir Alam. "Thermal transport during thin-film argon evaporation over nanostructured platinum surface: A molecular dynamics study." Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems 232, no. 2-3 (2018): 83–91. http://dx.doi.org/10.1177/2397791418802498.

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Investigation of thermal transport characteristics of thin-film liquid evaporation over nanostructured surface has been conducted using molecular dynamics simulation with particular importance on the effects of the nanostructure configuration for different wall–fluid interaction strengths. The nanostructured surface considered herein comprises wall-through rectangular nanoposts placed over a flat wall. Both the substrate and the nanostructure are of platinum while argon is used as the evaporating liquid. Two different wall–fluid interaction strengths have been considered that essentially emula

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13

Plirdpring, Theerayuth, Mati Horprathum, Pitak Eiamchai, et al. "Growth of Nanostructure TiO₂ Films by Glancing Angle Deposition." Key Engineering Materials 675-676 (January 2016): 289–92. http://dx.doi.org/10.4028/www.scientific.net/kem.675-676.289.

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Nanostructure TiO2 films were prepared by electron beam evaporation with glancing angle deposition technique at room temperature. The morphology, crystal structure and optical properties at various substrate rotation speeds (0-10 rpm) were investigated by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and UV-vis spectrophotometer. The cross-section FE-SEM images illustrate that the nanostructures consist of different morphology: slanted columnar, spiral and vertical align nanorods at 0, 0.01 and 10 rpm-rotation speed, respectively. In particular, the rotation spe

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Yuan, Jian-Jun, and Ren-Hua Jin. "Approaches to nanostructure control and functionalizations of polymer@silica hybrid nanograss generated by biomimetic silica mineralization on a self-assembled polyamine layer." Beilstein Journal of Nanotechnology 2 (November 23, 2011): 760–73. http://dx.doi.org/10.3762/bjnano.2.84.

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We report the rational control of the nanostructure and surface morphology of a polyamine@silica nanoribbon-based hybrid nanograss film, which was generated by performing a biomimetic silica mineralization reaction on a nanostructured linear polyethyleneimine (LPEI) layer preorganized on the inner wall of a glass tube. We found that the film thickness, size and density of the nanoribbons and the aggregation/orientation of the nanoribbons in the film were facile to tune by simple adjustment of the biomimetic silicification conditions and LPEI self-assembly on the substrate. Our LPEI-mediated na

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15

An, Jing, Galong Li, Yifan Zhang, et al. "Recent Advances in Enzyme-Nanostructure Biocatalysts with Enhanced Activity." Catalysts 10, no. 3 (2020): 338. http://dx.doi.org/10.3390/catal10030338.

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Owing to their unique physicochemical properties and comparable size to biomacromolecules, functional nanostructures have served as powerful supports to construct enzyme-nanostructure biocatalysts (nanobiocatalysts). Of particular importance, recent years have witnessed the development of novel nanobiocatalysts with remarkably increased enzyme activities. This review provides a comprehensive description of recent advances in the field of nanobiocatalysts, with systematic elaboration of the underlying mechanisms of activity enhancement, including metal ion activation, electron transfer, morphol

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16

Dell’Aglio, Marcella, and Alessandro De Giacomo. "Optical Diagnostics during Pulsed Laser Ablation in Liquid (PLAL) for the Production of Metallic Nanoparticles." Applied Sciences 11, no. 21 (2021): 10344. http://dx.doi.org/10.3390/app112110344.

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Pulsed laser ablation in liquid (PLAL) is gaining an important role as a methodology for producing nanostructures without the use of chemicals and stabilizers. Several nanomaterials have been produced and the engineering of PLAL is becoming an important task for the dissemination of this approach for nanostructure production. Monitoring the processes involved in the PLAL during nanostructure production can be extremely useful for improving the experimental methods and for pushing PLAL to new material formation. In this paper, we discuss the use of optical techniques for investigating the speci

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17

Gupta, Vinod Kumar, Njud S. Alharbie, Shilpi Agarwal, and Vladimir A. Grachev. "New Emerging One Dimensional Nanostructure Materials for Gas Sensing Application: A Mini Review." Current Analytical Chemistry 15, no. 2 (2019): 131–35. http://dx.doi.org/10.2174/1573411014666180319151407.

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Background: Nanomaterials have numerous potential applications in many areas such as electronics, optoelectronics, catalysis and composite materials. Particularly, one dimensional (1D) nanomaterials such as nanobelts, nanorods, and nanotubes can be used as either functional materials or building blocks for hierarchical nanostructures. 1D nanostructure plays a very important role in sensor technology. Objective: In the current review, our efforts are directed toward recent review on the use of 1D nanostructure materials which are used in the literature for developing high-performance gas sensor

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18

Srinadhu, E. S., D. D. Kulkarni, D. A. Field, J. E. Harriss, and C. E. Sosolik. "Multicharged ion processing for targeted nanostructure formation." Journal of Applied Physics 132, no. 15 (2022): 155302. http://dx.doi.org/10.1063/5.0098945.

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We report on nano-patterning with multiply charged argon ions that facilitates the self-assembly of epitaxial [Formula: see text]Si nanostructures. In particular, we show that the impact sites formed from the dissipation of the incident ion potential energy for [Formula: see text] ([Formula: see text]) modulate the growth density and growth rate for silicide nanostructures. The observed nanostructure densities were found to vary as [Formula: see text] for strain-driven, shape transition-type growth, and the observed growth rates far exceeded those obtained under thermal conditions. Relating th

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19

Lazarev, Mikhail. "Numerical study of valence band states evolution in Al_xGa_1-xAs [111] QDs systems." PeerJ Materials Science 6 (February 19, 2024): e32. http://dx.doi.org/10.7717/peerj-matsci.32.

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Quantum dots (QDs) are very attractive nanostructures from an application point of view due to their unique optical properties. Optical properties and valence band (VB) state character was numerically investigated with respect to the effects of nanostructure geometry and composition. Numerical simulation was carried out using the Luttinger–Kohn model adapted to the particular case of QDs in inverted pyramids. We present the source code of the 4-band Luttinger–Kohn model that can be used to model AlGaAs or InGaAs nanostructures. The work focuses on the optical properties of GaAs/AlGaAs [111] QD

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20

Franco, Alfredo, Rafael O. Torres-Mendieta, Edgar Alvarez-Zauco, and Jorge A. García-Macedo. "Effect of Nanostructures on Corona Poling Assisted Second Harmonic Generation in Hybrid Organic-Inorganic Films." Advanced Materials Research 976 (June 2014): 251–55. http://dx.doi.org/10.4028/www.scientific.net/amr.976.251.

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Hybrid organic-inorganic films are attractive materials for an alternative manufacture of photonic devices based on non-linear second-order optical processes. However, their efficiency and stability, closely related to their chromophores non-centrosymmetric orientation, still need some improvements. The use of nanostructures in this kind of materials gives place to a change in the chromophores surrounding medium; it can be used to improve the efficiency and the stability of the chromophores orientation in the films. In this work we show that some nanostructures are able to improve significantl

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Nicolosi, Valeria. "Processing and characterisation of two-dimensional nanostructures." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C510. http://dx.doi.org/10.1107/s2053273314094893.

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Low-dimensional nanostructured materials such as organic and inorganic nanotubes, nanowires and platelets are potentially useful in a number of areas of nanoscience and nanotechnology due to their remarkable mechanical, electrical and thermal properties. However difficulties associated with their lack of processability have seriously hampered both. In the last few years dispersion and exfoliation methods have been developed and demonstrated to apply universally to 1D and 2D nanostructures of very diverse nature, offering a practical means of processing the nanostructures for a wide range of in

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Gutiérrez-Fernández, Edgar, Tiberio Ezquerra, Aurora Nogales, and Esther Rebollar. "Straightforward Patterning of Functional Polymers by Sequential Nanosecond Pulsed Laser Irradiation." Nanomaterials 11, no. 5 (2021): 1123. http://dx.doi.org/10.3390/nano11051123.

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Laser-based methods have demonstrated to be effective in the fabrication of surface micro- and nanostructures, which have a wide range of applications, such as cell culture, sensors or controlled wettability. One laser-based technique used for micro- and nanostructuring of surfaces is the formation of laser-induced periodic surface structures (LIPSS). LIPSS are formed upon repetitive irradiation at fluences well below the ablation threshold and in particular, linear structures are formed in the case of irradiation with linearly polarized laser beams. In this work, we report on the simple fabri

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Bubenchikov, Michael, Alexey Bubenchikov, and Alexander Malozemov. "Studying permeability of nanostructures obtained from polyethylene threads." Thermal Science 23, Suppl. 2 (2019): 463–69. http://dx.doi.org/10.2298/tsci19s2463b.

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The paper studies process of interaction of a moving molecule with structure atoms. The mathematical description is based on application of Hamiltonian systems model and numerical methods for solving the basic problem of molecular dynamics. The interaction between individual atoms and the simplest molecules is cared out using the classical Lennard-Jones potential. Polyethylene nanostructures are considered as filtering elements for selective separation of natural gas mixtures, in particular, their light components: hydrogen and helium. The influence of geometric dimensions and geometric featur

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Ito, Takeshi. "Clarification of bactericidal effect using controllable nanostructures." Impact 2019, no. 10 (2019): 82–83. http://dx.doi.org/10.21820/23987073.2019.10.82.

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Professor Takeshi Ito, a researcher based in the Faculty of Mechanical Engineering, Kansai University in Japan, has a particular interest in micro and nano fabrication technologies and their various applications. Ito is particularly interested in their applications in biotechnology and is working to develop biosensing devices and biomimicking materials using nanostructures. These devices and materials could have multiple applications in myriad settings. For example, nanostructure-based bactericidal material has the ability to kill bacteria with antimicrobial resistance and could have a number

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Matmin, Juan. "Rice Starch-Templated Synthesis of Nanostructured Silica and Hematite." Proceedings 3, no. 1 (2018): 1. http://dx.doi.org/10.3390/iocn_2018-1-05491.

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Synthesis of nanostructured materials is not straightforward, which involves the complicated use of surfactant templates. Currently, only non-renewable resources that are hazardous and toxic are used to produce the surfactant templates in the industries. This study presents an environmentally friendly and efficient route for the synthesis of the nanostructure of both silica and hematite using rice starch as a promising biomaterials template. The rice starch-templated synthesis yield both hematite and silica with nano-size and high surface area. In particular, the nanostructured silica showed a

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M. Aguilar, Nery, José Manuel Pérez-Aguilar, Valeria J. González-Coronel, et al. "Hydrolyzed Polyacrylamide as an In Situ Assistant in the Nucleation and Growth of Gold Nanoparticles." Materials 15, no. 23 (2022): 8557. http://dx.doi.org/10.3390/ma15238557.

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The modulation of nanoparticles’ size, shape, and dispersion by polymers has attracted particular attention in different fields. Nevertheless, there is a lack of information regarding the use of charged macromolecules as assistants in the nanostructures’ nucleation and growth processes. Prompted by this, the in situ synthesis of gold nanoparticles (AuNPs) aided by hydrolyzed polyacrylamides (HPAM), with different chemical structures, was developed. In contrast to the conventional synthesis of nanostructures assisted by polyacrylamide, here, the polymerization, hydrolysis, and nanostructure for

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Ding, Mali, Dessy Ariyanti, and Wei Gao. "Formation of copper hydroxyl sulfates in CuSO4 solution by NaOH titration." International Journal of Modern Physics B 33, no. 01n03 (2019): 1940059. http://dx.doi.org/10.1142/s0217979219400599.

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Nanostructured copper hydroxyl salts have raised researchers’ attention due to its potential application in photocatalysis. In this paper, copper hydroxyl sulfates were synthesized by titrating NaOH solution to CuSO4 solution with the suggested pH from modeling software Visual MINTEQ. Brochantite nanostructures was produced at the end point pH 5 and 6, meanwhile the mixture of brochantite and posnjakite was obtained at pH 10. These results show the usability of Visual MINTEQ in determining the operating parameter (pH) range for the particular crystal synthetizations. In addition, these crystal

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Shimotsuma, Yasuhiko, Kotaro Tomura, Tatsuya Okuno, Masahiro Shimizu, and Kiyotaka Miura. "Femtosecond Laser-Induced Self-Assembly of Ce3+-Doped YAG Nanocrystals." Crystals 10, no. 12 (2020): 1142. http://dx.doi.org/10.3390/cryst10121142.

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Direct three-dimensional laser writing of crystallization inside glass has been intensely studied as an attractive technique for fabricating photonic devices. In particular, polarization-dependent periodic nanostructures composed of the partial crystallization in glass can be self-assembled through focused irradiation of femtosecond pulses. Here, we report on the Y3Al5O12 (YAG) crystal precipitation in nanoscale by femtosecond laser irradiation inside Al2O3-Y2O3 glass. Furthermore, we focus on the white emission by Ce: YAG in which a part of Y3+ site was replaced by Ce3+, the effect on photolu

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Botsoa, Jacques, Jean Marie Bluet, Vladimir Lysenko, Olivier Marty, Daniel Barbier, and Gérard Guillot. "Photoluminescence of 6H-SiC Nanostructures." Materials Science Forum 556-557 (September 2007): 407–10. http://dx.doi.org/10.4028/www.scientific.net/msf.556-557.407.

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Photoluminescence properties of a freestanding nanoporous SiC layer obtained from bulk 6H-SiC substrate as well as SiC nanopowder consisting of numerous separated nanoparticles has been investigated. The nanoporous SiC layer is obtained by UV radiation assisted electrochemical etching of the 6H-SiC wafer and the SiC nanopowder is formed by mechanical grinding of the nanoporous SiC free layer. A comparison of low temperature PL spectra of the SiC nanostructures and initial SiC bulk substrate has been performed. The evolution of PL spectra of the SiC nanostructures with respect to their surface

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Yang, Shaopeng, Xinyue Wang, Qiujin Wang, et al. "Novel Terahertz Properties of Nanostructured Mn3+0.53Sn Films with Different Crystalline Orientations Driven by Ostwald Ripening on (0001) c-Al2O3." Coatings 12, no. 8 (2022): 1201. http://dx.doi.org/10.3390/coatings12081201.

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The characteristic energies of elementary excitations and collective modes in many quantum materials lie mostly in the terahertz (THz) frequency range, which provides a wide space for the development of THz optical materials and devices. In particular, topological Weyl semimetal Mn3Sn is a noncollinear antiferromagnet with anomalous THz properties, which is strongly affected by thermal energy and external magnetic fields. Despite the explosive growth of the research on magnetic Weyl semimetals recently, its nanoscale structure for applications in THz optical devices remains to be explored. Her

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Massironi, Alessio, Andrea Morelli, Dario Puppi, and Federica Chiellini. "Renewable Polysaccharides Micro/Nanostructures for Food and Cosmetic Applications." Molecules 25, no. 21 (2020): 4886. http://dx.doi.org/10.3390/molecules25214886.

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The worldwide diffusion of nanotechnologies into products nowadays has completely revolutionized human life, providing novel comfort and benefits. Their inclusion in food and cosmetic has a heavy impact over the market, allowing the development of higher value products with enhanced properties. Natural origin polymers and in particular polysaccharides represent a versatile platform of materials for the development of micro/nanostructured additives for food and cosmetic products due to their chemical versatility, biocompatibility, and abundance. Here, we review the current applications of polys

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Cringoli, Maria Cristina, Siglinda Perathoner, Paolo Fornasiero, and Silvia Marchesan. "Carbon Nanostructures Decorated with Titania: Morphological Control and Applications." Applied Sciences 11, no. 15 (2021): 6814. http://dx.doi.org/10.3390/app11156814.

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Nanostructured titania (TiO2) is the most widely applied semiconducting oxide for a variety of purposes, and it is found in many commercial products. The vast majority of uses rely on its photo-activity, which, upon light irradiation, results in excited states that can be used for diverse applications. These range from catalysis, especially for energy or environmental remediation, to medicine—in particular, to attain antimicrobial surfaces and coatings for titanium implants. Clearly, the properties of titania are enhanced when working at the nanoscale, thanks to the increasingly active surface

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Babicheva, Viktoriia E. "Transition Metal Dichalcogenide Nanoantennas Lattice." MRS Advances 4, no. 41-42 (2019): 2283–88. http://dx.doi.org/10.1557/adv.2019.357.

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ABSTRACTHigh-index materials such as silicon and III-V compounds have recently gained a lot of interest as a promising material platform for efficient photonic nanostructures. Because of the high refractive index, nanoparticles of such materials support Mie resonances and enable efficient light control and its confinement at the nanoscale. Here we propose a design of nanostructure with multipole resonances where optical nanoantennas are made out of transition metal dichalcogenide, in particular, tungsten disulfide WS2. Transition metal dichalcogenide (TMDCs) possess a high refractive index and

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Suwito, Galih R., Vladimir G. Dubrovskii, Zixiao Zhang, et al. "Tuning the Liquid–Vapour Interface of VLS Epitaxy for Creating Novel Semiconductor Nanostructures." Nanomaterials 13, no. 5 (2023): 894. http://dx.doi.org/10.3390/nano13050894.

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Controlling the morphology and composition of semiconductor nano- and micro-structures is crucial for fundamental studies and applications. Here, Si-Ge semiconductor nanostructures were fabricated using photolithographically defined micro-crucibles on Si substrates. Interestingly, the nanostructure morphology and composition of these structures are strongly dependent on the size of the liquid–vapour interface (i.e., the opening of the micro-crucible) in the CVD deposition step of Ge. In particular, Ge crystallites nucleate in micro-crucibles with larger opening sizes (3.74–4.73 μm2), while no

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Opra, Denis P., Sergey V. Gnedenkov, Alexander A. Sokolov, Valery G. Kuryavyi та Sergey L. Sinebryukhov. "α-MoO₃ Nanostructure Synthesized in Plasma by an Original Method of Pulsed High-Voltage Discharge as Highly Reversible Anode for Secondary Lithium-Ion Battery". Solid State Phenomena 245 (жовтень 2015): 172–77. http://dx.doi.org/10.4028/www.scientific.net/ssp.245.172.

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A new concept for synthesis of the nanostructured transition metal oxides had been proposed. In particular, the method of pulsed high-voltage discharge was adopted for synthesis of α-MoO3 nanostructure with orthorhombic crystal lattice. The as-prepared α-MoO3 was investigated as anode for Li-ion battery. The 30-fold charge–discharge cycling has shown that material specific capacity (approximately 90 mAh g–1) is not high, however excellent reversibility was achieved (the Coulombic efficiency equals to 99.9%). Thus the method opens new ways for the synthesis of nanomaterials with stable reversib

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Mehrdel, Baharak, Ali Nikbakht, Azlan Abdul Aziz, Mahmood S. Jameel, Mohammed Ali Dheyab, and Pegah Moradi Khaniabadi. "Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices." Nanotechnology 33, no. 8 (2021): 082001. http://dx.doi.org/10.1088/1361-6528/ac37e3.

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Abstract Upconversion (UC) of lanthanide-doped nanostructure has the unique ability to convert low energy infrared (IR) light to high energy photons, which has significant potential for energy conversion applications. This review concisely discusses the basic concepts and fundamental theories of lanthanide nanostructures, synthesis techniques, and enhancement methods of upconversion for photovoltaic and for near-infrared (NIR) photodetector (PD) application. In addition, a few examples of lanthanide-doped nanostructures with improved performance were discussed, with particular emphasis on upco

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Li, Jian, Pablo Jiménez-Calvo, Erwan Paineau, and Mohamed Nawfal Ghazzal. "Metal Chalcogenides Based Heterojunctions and Novel Nanostructures for Photocatalytic Hydrogen Evolution." Catalysts 10, no. 1 (2020): 89. http://dx.doi.org/10.3390/catal10010089.

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The photo-conversion efficiency is a key issue in the development of new photocatalysts for solar light driven water splitting applications. In recent years, different engineering strategies have been proposed to improve the photogeneration and the lifetime of charge carriers in nanostructured photocatalysts. In particular, the rational design of heterojunctions composites to obtain peculiar physico-chemical properties has achieved more efficient charge carriers formation and separation in comparison to their individual component materials. In this review, the recent progress of sulfide-based

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Vona, Danilo, Marco Lo Presti, Stefania Roberta Cicco, Fabio Palumbo, Roberta Ragni та Gianluca Maria Farinola. "Light emitting silica nanostructures by surface functionalization of diatom algae shells with a triethoxysilane-functionalized π-conjugated fluorophore". MRS Advances 1, № 57 (2015): 3817–23. http://dx.doi.org/10.1557/adv.2015.21.

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ABSTRACTThe functionalization of biosilica shells (frustules) of diatoms microalgae with a tailored luminescent molecule is a convenient, scalable and biotechnological approach for obtaining new light emitting silica nanostructures with promising applications in photonics. In particular, here we report the synthesis of a red emitting organic fluorophore and its covalent linking to the surface of mesoporous biosilica extracted from Thalassiosira weissflogii diatoms cultured in our laboratories. The organic dye has a conjugated skeleton composed of thienyl, benzothiadiazolyl and phenyl units and

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Kim, Jeonghun, So Yeon Ahn, and Soong Ho Um. "Empirical and Theoretical Evaluation of a Tree-Shaped DNA Nanostructure with a Looped Arm (L-DNA)." Science of Advanced Materials 13, no. 8 (2021): 1452–57. http://dx.doi.org/10.1166/sam.2021.4018.

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Several nanostructures have been created with the advent of nanotechnology. DNA has been recognized as a new building block material in addition to its genetic coding role because of its unique features (e.g., intrinsic biocompatibility, precise tenability, specific selectivity). DNA can be organized into a variety of self-assembled nanomaterials including a sphere, a ball, and even an emoticon. In particular, a tree-shaped DNA structure possessing characteristic fractural patterns is easily controlled by size and functionality and can be exploited in various fields. Here, we report an empiric

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Kim, Byung-Joo, Kyong-Min Bae, Hye-Min Lee, Shin-Jae Kang, and Soo-Jin Park. "A Study on Toxic Acidic Vapor Removal Behaviors of Continuously Nanostructured Copper/Nickel-Coated Nanoporous Carbons." Journal of Nanomaterials 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/546720.

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Nanostructured copper (Cu)/nickel- (Ni-) coated nanoporous carbon sheets (NCS) were prepared to improve the toxic acidic vapor (hydrogen chloride, HCl) removal efficiency of NCS using a continuous bimetal electroplating method at various metal content ratios. The surface morphology and nanostructure of Cu/Ni-NCS were observed by scanning electron microscopy and X-ray diffraction, respectively. N2/77 K adsorption isotherms were investigated using the Brunauer-Emmett-Teller equation. HCl vapor removal efficiency was confirmed using two types of detection techniques: a gas detecting tube for low

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Al-AJILI, ADWAN. "CONTINUOUS-WAVE PHOTOLUMINESCENCE AND NANOSTRUCTURAL PROPERTIES OF POROUS SILICON." International Journal of Nanoscience 08, no. 03 (2009): 311–18. http://dx.doi.org/10.1142/s0219581x09006079.

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The photoluminescence (PL) emitted by porous silicon has been investigated by using the continuous tuneable UV Synchrotron Radiation Source. One sample was investigated for orange PL emission wavelength at temperatures 77–295 K. The PL peak is found to shift to higher frequency with decreasing temperature. Information about the nanostructure of porous silicon has been determined from PL and Extended X-ray Absorption Fine Structure (EXAFS), as well as from electron microscopy. In particular, the optical properties of silicon-based nanostructured materials, obtained from PL and photoluminescence

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Dhanasiwawong, Kittidhaj, Kheamrutai Thamaphat, Mati Horprathum, Annop Klamchuen, Apiwat Phetsahai, and Pichet Limsuwan. "Preparation of 2D Periodic Nanopatterned Arrays through Vertical Vibration-Assisted Convective Deposition for Application in Metal-Enhanced Fluorescence." Processes 10, no. 2 (2022): 202. http://dx.doi.org/10.3390/pr10020202.

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The performance of a metal-enhanced fluorescence (MEF) substrate is fundamentally based on the orientation of the metal nanostructures on a solid substrate. In particular, two-dimensional (2D) periodic metallic nanostructures exhibit a strong confinement of the electric field between adjacent nanopatterns due to localized surface plasmon resonance (LSPR), leading to stronger fluorescence intensity enhancement. The use of vertical vibration-assisted convective deposition, a novel, simple, and highly cost-effective technique for preparing the 2D periodic nanostructure of colloidal particles with

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Huang, Dingyan, Huimin Xiang, Ran Ran, Wei Wang, Wei Zhou, and Zongping Shao. "Recent Advances in Nanostructured Inorganic Hole−Transporting Materials for Perovskite Solar Cells." Nanomaterials 12, no. 15 (2022): 2592. http://dx.doi.org/10.3390/nano12152592.

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Organic−inorganic halide perovskite solar cells (PSCs) have received particular attention in the last decade because of the high−power conversion efficiencies (PCEs), facile fabrication route and low cost. However, one of the most crucial obstacles to hindering the commercialization of PSCs is the instability issue, which is mainly caused by the inferior quality of the perovskite films and the poor tolerance of organic hole−transporting layer (HTL) against heat and moisture. Inorganic HTL materials are regarded as promising alternatives to replace organic counterparts for stable PSCs due to th

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Zhao, Shifeng. "Advances in Multiferroic Nanomaterials Assembled with Clusters." Journal of Nanomaterials 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/101528.

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As an entirely new perspective of multifunctional materials, multiferroics have attracted a great deal of attention. With the rapidly developing micro- and nano-electro-mechanical system (MEMS&NEMS), the new kinds of micro- and nanodevices and functionalities aroused extensive research activity in the area of multiferroics. As an ideal building block to assemble the nanostructure, cluster exhibits particular physical properties related to the cluster size at nanoscale, which is efficient in controlling the multiferroic properties for nanomaterials. This review focuses on our recent advance

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Lupan, Cristian, Vasilii Crețu, Abhishek Kumar Mishra, et al. "THIN FILMS OF COPPER OXIDE NANOSTRUCTURED VIA RAPID THERMAL PROCESSING." Journal of Engineering Science 29, no. 4 (2023): 84–96. http://dx.doi.org/10.52326/jes.utm.2022.29(4).04.

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Nanostructured copper oxide films were obtained by the method of chemical synthesis from solutions (SCS) and exposed to post-growth rapid thermal processing (RTP) in air at different temperatures to study the influence of annealing temperature on morphological, chemical, structural and sensing properties. Controlled modification of surface morphology, in the particular size of nanostructures, crystallinity and phase can be achieved by RTP, which is preferred due to saving of energy budget nowadays. Detailed physico-chemical analysis of the films was performed using the scanning electron micros

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Cringoli, Maria C., Slavko Kralj, Marina Kurbasic, Massimo Urban, and Silvia Marchesan. "Luminescent supramolecular hydrogels from a tripeptide and nitrogen-doped carbon nanodots." Beilstein Journal of Nanotechnology 8 (August 1, 2017): 1553–62. http://dx.doi.org/10.3762/bjnano.8.157.

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The combination of different components such as carbon nanostructures and organic gelators into composite nanostructured hydrogels is attracting wide interest for a variety of applications, including sensing and biomaterials. In particular, both supramolecular hydrogels that are formed from unprotected D,L-tripeptides bearing the Phe-Phe motif and nitrogen-doped carbon nanodots (NCNDs) are promising materials for biological use. In this work, they were combined to obtain luminescent, supramolecular hydrogels at physiological conditions. The self-assembly of a tripeptide upon application of a p

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De Tommasi, Edoardo, Ilaria Rea, Maria Antonietta Ferrara, et al. "Pleurosigma strigosum diatom frustule as a natural, multi-functional photonic platform." EPJ Web of Conferences 309 (2024): 04017. http://dx.doi.org/10.1051/epjconf/202430904017.

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Nature provides various organisms with ordered or quasi-ordered dielectric nanostructures that enable several animals, plants, and protists to manipulate light, optimizing inter- and intra-species communication, camouflage, or solar light harvesting. In particular, diatom microalgae possess nanostructured silica cell walls, known as frustules, which efficiently interact with optical radiation through multiple diffractive, refractive, scattering, waveguiding, and frequency down-conversion mechanisms. These properties contribute to diatoms’ efficiency in photosynthesis, UV tolerance, and possibl

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Criscuolo, Francesca, Irene Taurino, Van Dam, et al. "Fast Procedures for the Electrodeposition of Platinum Nanostructures on Miniaturized Electrodes for Improved Ion Sensing." Sensors 19, no. 10 (2019): 2260. http://dx.doi.org/10.3390/s19102260.

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Nanostructured materials have attracted considerable interest over the last few decades to enhance sensing capabilities thanks to their unique properties and large surface area. In particular, noble metal nanostructures offer several advantages including high stability, non-toxicity and excellent electrochemical behaviour. However, in recent years the great expansion of point-of-care (POC) and wearable systems and the attempt to perform measurements in tiny spaces have also risen the need of increasing sensors miniaturization. Fast constant potential electrodeposition techniques have been prov

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Litra, Dinu, Maxim Chiriac, Nicolai Ababii, and Oleg Lupan. "Acetone Sensors Based on Al-Coated and Ni-Doped Copper Oxide Nanocrystalline Thin Films." Sensors 24, no. 20 (2024): 6550. http://dx.doi.org/10.3390/s24206550.

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Acetone detection is of significant importance in various industries, from cosmetics to pharmaceuticals, bioengineering, and paints. Sensor manufacturing involves the use of different semiconductor materials as well as different metals for doping and functionalization, allowing them to achieve advanced or unique properties in different sensor applications. In the healthcare field, these sensors play a crucial role in the non-invasive diagnosis of various diseases, offering a potential way to monitor metabolic conditions by analyzing respiration. This article presents the synthesis method, usin

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De Luca, Erik, Yang Wang, Igor Baars, et al. "Wireframe DNA Origami for the Cellular Delivery of Platinum(II)-Based Drugs." International Journal of Molecular Sciences 24, no. 23 (2023): 16715. http://dx.doi.org/10.3390/ijms242316715.

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The DNA origami method has revolutionized the field of DNA nanotechnology since its introduction. These nanostructures, with their customizable shape and size, addressability, nontoxicity, and capacity to carry bioactive molecules, are promising vehicles for therapeutic delivery. Different approaches have been developed for manipulating and folding DNA origami, resulting in compact lattice-based and wireframe designs. Platinum-based complexes, such as cisplatin and phenanthriplatin, have gained attention for their potential in cancer and antiviral treatments. Phenanthriplatin, in particular, h

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