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Journal articles on the topic 'Composite nanostructure'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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1

Pauly, Alain, Sahal Saad Ali, Christelle Varenne, Jérôme Brunet, Eduard Llobet, and Amadou L. Ndiaye. "Phthalocyanines and Porphyrins/Polyaniline Composites (PANI/CuPctBu and PANI/TPPH2) as Sensing Materials for Ammonia Detection." Polymers 14, no. 5 (2022): 891. http://dx.doi.org/10.3390/polym14050891.

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We combined a conducting polymer, polyaniline (PANI), with an organic semiconducting macrocyclic (MCs) material. The macrocycles are the phthalocyanines and porphyrins used to tune the electrical properties of the PANI, which benefits from their ability to enhance sensor response. For this, we proceeded by a simple ultrasonically assisted reaction involving the two components, i.e., the PANI matrix and the MCs, to achieve the synthesis of the composite nanostructure PANI/MCs. The composite nanostructure has been characterized and deposited on interdigitated electrodes (IDEs) to construct resis
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2

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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3

Chen, Hongjun, and Lianzhou Wang. "Nanostructure sensitization of transition metal oxides for visible-light photocatalysis." Beilstein Journal of Nanotechnology 5 (May 23, 2014): 696–710. http://dx.doi.org/10.3762/bjnano.5.82.

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To better utilize the sunlight for efficient solar energy conversion, the research on visible-light active photocatalysts has recently attracted a lot of interest. The photosensitization of transition metal oxides is a promising approach for achieving effective visible-light photocatalysis. This review article primarily discusses the recent progress in the realm of a variety of nanostructured photosensitizers such as quantum dots, plasmonic metal nanostructures, and carbon nanostructures for coupling with wide-bandgap transition metal oxides to design better visible-light active photocatalysts
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4

Bajić, Danica, Damjan Čekerevac, Milica Marjanović, Srđa Perković, Bojana Fidanovski, and Constança Rigueiro. "Selected technical ceramics as nanoreinforcement for polyvinyl butyral/epoxy polymer composites." Tribology and Materials 2, no. 2 (2023): 46–54. http://dx.doi.org/10.46793/tribomat.2023.008.

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In this study, various technical ceramics in the form of nanostructures, known for their exceptional mechanical properties and thermal resistance, were analysed as potential reinforcement of a polymer matrix system. A combined, hybrid composite matrix was considered, consisting of epoxy resin and polyvinyl butyral. The following nanostructures were incorporated into the polymer matrix by ultrasonication and solvent-casting technique: B4C, TiB2, CNT and INT-WS2. Polymer composites were prepared by solvent-casting of neat hybrid polymer matrix and polymer matrix reinforcing with each chosen indi
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Barra, Ana, Cláudia Nunes, Eduardo Ruiz-Hitzky, and Paula Ferreira. "Green Carbon Nanostructures for Functional Composite Materials." International Journal of Molecular Sciences 23, no. 3 (2022): 1848. http://dx.doi.org/10.3390/ijms23031848.

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Carbon nanostructures are widely used as fillers to tailor the mechanical, thermal, barrier, and electrical properties of polymeric matrices employed for a wide range of applications. Reduced graphene oxide (rGO), a carbon nanostructure from the graphene derivatives family, has been incorporated in composite materials due to its remarkable electrical conductivity, mechanical strength capacity, and low cost. Graphene oxide (GO) is typically synthesized by the improved Hummers’ method and then chemically reduced to obtain rGO. However, the chemical reduction commonly uses toxic reducing agents,
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6

Singh, Harish, and Manashi Nath. "Highly Efficient Dopamine Sensing with Carbon Nanotube Encapsulated Metal Chalcogenide Nanostructure." ECS Meeting Abstracts MA2024-01, no. 49 (2024): 2688. http://dx.doi.org/10.1149/ma2024-01492688mtgabs.

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Carbon nanotube encapsulated nickel selenide composite nanostructures were used as a non-enzymatic electrochemical sensor for dopamine detection. These composite nanostructures were synthesized through a simple, one-step, and environmentally friendly chemical vapor deposition method, wherein the CNTs were formed in situ from pyrolysis of carbon-rich metallo-organic precursor. The composition and morphology of these NiSe2 filled hybrid nanostructures were confirmed by powder X-ray diffraction, Raman, XPS, and HRTEM images. Electrochemical tests demonstrated that the as-synthesized nanostructure
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He, Minghao, Mingzhao Li, and Zeyu Sun. "The Development of Si Anode Materials by Nanotechnology for Lithium-ion Battery." E3S Web of Conferences 308 (2021): 01007. http://dx.doi.org/10.1051/e3sconf/202130801007.

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Nowadays, lithium-ion batteries (LIBs) are applied in many fields for their high energy density, low cost, and long cycle life, highly appreciated in a commercial application. Anode materials, a vital factor contributing to high specific capacity, have caught great attention in next-generation LIBs development. Silicon (Si) has been generally considered one of the best substitutes for the commercial carbon-based anodes of lithium-ion batteries due to its extremely high theoretical capacity, excellent charge-discharge performance, and low cost compared with other anode materials. In this review
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Loginos, Panagiotis, Anastasios Patsidis, and Vasilios Georgakilas. "UV-Cured Poly(Ethylene Glycol) Diacrylate/Carbon Nanostructure Thin Films. Preparation, Characterization, and Electrical Properties." Journal of Composites Science 4, no. 1 (2020): 4. http://dx.doi.org/10.3390/jcs4010004.

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Carbon nanoallotropes such as carbon nanotubes, graphene, and their derivatives have been combined with a plethora of polymers in the last years to develop new composite materials with interesting properties and applications. However, the area of photopolymer composites with carbon nanostructures has not been analogously explored. In the present article, we study the photopolymerization of poly(ethylene glycol)diacrylate (PEGDA) enriched with different carbon nanoallotropes like graphene, pristine and chemically modified carbon nanotubes (CNTs and fCNTs), and a hybrid of graphene and CNTs. The
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9

Georgantzinos, Stelios K., Stylianos I. Markolefas, Stamatis A. Mavrommatis, and Konstantinos P. Stamoulis. "Finite element modelling of carbon fiber - carbon nanostructure - polymer hybrid composite structures." MATEC Web of Conferences 314 (2020): 02004. http://dx.doi.org/10.1051/matecconf/202031402004.

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The present study deals with the numerical modelling of hybrid laminated composites, which can be proved especially useful in the engineering and maintenance of advanced aerospace primary structures. The lamina is comprised of continuous carbon fibers, thermosetting epoxy polymer matrix, as well as carbon nanostructures, such as graphene or carbon nanotubes, inclusions. Halpin-Tsai equations combined with results obtained from nanomechanical analysis are employed in order to evaluate the elastic properties of the carbon nanostructure/polymer matrix. Then, the obtained elastic properties of the
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10

Abdelraheem, Amira, Ahmed H. El-Shazly, and M. F. El-Kady. "Nanofiber Polyaniline and Polyaniline-Clay Nanocomposite Prepared via Sonochemical and Sol-Gel Techniques." Materials Science Forum 860 (July 2016): 12–16. http://dx.doi.org/10.4028/www.scientific.net/msf.860.12.

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Polyaniline (PANI) and polyaniline-clay (PANI-clay) composite nanostructured materials were prepared via both ultrasonic irradiation and sol-gel preparation techniques. The molecular structure of prepared PANI and PANI-clay composite samples were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The characterization results confirm the nanostructure of prepared samples. BET surface area results were obtained for the prepared matrices. TEM and SEM images showed the morphology of the fabricated nanomaterials.
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11

KONDAWAR, S. B., S. R. THAKARE, V. KHATI, and S. BOMPILWAR. "NANOSTRUCTURE TITANIA REINFORCED CONDUCTING POLYMER COMPOSITES." International Journal of Modern Physics B 23, no. 15 (2009): 3297–304. http://dx.doi.org/10.1142/s0217979209052583.

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Composites of polyaniline with synthesized nanostructured titania ( TiO 2) and polyaniline with commercial TiO 2 have been in situ synthesized by oxidative chemical polymerization method. Sulfuric acid was used as dopant during the polymerization process. Sol-gel precipitates of nanostructured titania were synthesized by hydrolyzing the mixture of titanium chloride ( TiCl 3) and colloidal transparent solution of starch. Composite materials were subjected for comparison to spectroscopic and X-ray diffraction analysis. Strong coupling/interaction of titania with the imine nitrogen in polyaniline
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12

Rajagopal, Rajesh, and Kwang-Sun Ryu. "Temperature Controlled Synthesis of Ce–MnO2 Nanostructure: Promising Electrode Material for Supercapacitor Applications." Science of Advanced Materials 12, no. 4 (2020): 461–69. http://dx.doi.org/10.1166/sam.2020.3638.

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The objective of this study was to prepare Ce–MnO2 nanostructure composite as an electrode material for supercapacitor application. Ce–MnO2 nanostructure composite was synthesized by facile hydrothermal method at different temperatures. Structural details of pure and Ce–MnO2 nanostructure composite were studied using powder X-ray diffraction technique. The formation of flower like structure and strong interaction with Ce and MnO2 were confirmed by field emission electron microscope technique. Their electrochemical performances were elucidated by using cyclic voltammetry, charge–discharge, and
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13

ZHANG, LU, YAN-JUAN TANG, YAN-JIE GUO, et al. "A NEW CORE–SHELL HYBRID NANOSTRUCTURES OF GOLD NANOROD FOR ENHANCING FLUORESCENCE AND APPLICATION IN DUAL-COLOR IMAGING." Nano 09, no. 03 (2014): 1450035. http://dx.doi.org/10.1142/s1793292014500350.

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A novel core–shell hybrid nanostructure was constructed by employing gold nanorod ( AuNR ) combined with rhodamine B (RB) as a core and silica as a shell. The poly(sodium 4-styrenesulfonate) (PSS), a negatively charged polyelectrolyte, played the role of linker to electrostatically trap RB on AuNRs . Due to the fluorescence spectral overlap between RB and AuNRs at 560 nm, the red fluorescence and enhanced green fluorescence of the hybrid nanostructures were observed obviously, which is capable for dual-color labeling. To reduce toxic side effects of AuNRs , silica was coated on AuNRs as a shel
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14

Yin, Shuo, Chaoyue Chen, Xinkun Suo, and Rocco Lupoi. "Cold-Sprayed Metal Coatings with Nanostructure." Advances in Materials Science and Engineering 2018 (2018): 1–19. http://dx.doi.org/10.1155/2018/2804576.

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Cold spray is a solid-state coating deposition technology developed in the 1980s. In comparison with conventional thermal spray processes, cold spray can retain the original properties of feedstock, prevent the adverse influence on the underlying substrate materials, and produce very thick coatings. Coatings with nanostructure offer the potential for significant improvements in physical and mechanical properties as compared with conventional non-nanostructured coatings. Cold spray has also demonstrated great capability to produce coatings with nanostructure. This paper is aimed at providing a
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15

Meng, Yanlong, Jinghao Wu, Simeng Liu, Yi Li, Bo Hu, and Shangzhong Jin. "Ultra-Broadband, Polarization-Irrelevant Near-Perfect Absorber Based on Composite Structure." Micromachines 13, no. 2 (2022): 267. http://dx.doi.org/10.3390/mi13020267.

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This paper proposes a near-perfect absorption device based on a cross-shaped titanium nanostructure and a multilayered structure. The multilayered bottom structure consists of alternately SiO2 and Ti. The whole device is put on a TiN substrate. The coupling between cross-shaped titanium nanostructures, and that between the cross-shaped titanium nanostructure and bottom multilayer, can further enhance the absorption at some wavelength where most of the energy is reflected or passes through in the device with a single structure. According to the simulation results, the device presents a nearly p
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16

LI, WEN, DAISUKE ISHIKAWA, and HIROKAZU TATSUOKA. "SYNTHESES OF NANOSTRUCTURE BUNDLES BASED ON SEMICONDUCTING METAL SILICIDES." Functional Materials Letters 06, no. 05 (2013): 1340011. http://dx.doi.org/10.1142/s1793604713400110.

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A variety of nanostructure bundles and arrays based on semiconducting metal silicides have been synthesized using abundant and non-toxic starting materials. Three types of fabrication techniques of the nanostructure bundles or arrays, including direct growth, template synthesis using natural nanostructured materials and template synthesis using artificially fabricated nanostructured materials are demonstrated. CrSi 2 nanowire bundles were directly grown by the exposure of Si substrates to CrCl 2 vapor at atmospheric pressure. A hexagonal MoSi 2 nanosheet, Mg 2 Si / MgO composite nanowire and M
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17

Hu, Wen-ru, Xiang-quan Meng, Lei Zhang, Jian Sun, Xue Yang, and Xiao-dong Du. "Improved thermal stability of nanostructured surface on Al 6082 alloy by (Zr+Yb) addition." Emerging Materials Research 14, no. 1 (2025): 1–30. https://doi.org/10.1680/jemmr.24.00031.

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Aluminum alloy 6082 (AA6082) is widely used in the production of industrial structural parts due to its light weight and good mechanical properties. However, such structural components are often accompanied by peripheral coarse grain defects and poor surface hardness and wear resistance. A nanostructured surface layer was developed on AA6082 through Surface Mechanical Attrition Treatment (SMAT) to improve the surface properties. Thermal stability and other features of nanostructured surface layer were investigated after annealed from 150 °C to 350 °C. The experiment results showed that the the
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18

Kim, Seong-Eun, Woo-Jin Cho, Jin-Kook Yoon, and In-Jin Shon. "The Effect of BN Reinforcement on the Mechanical Properties of Nanostructured Al2O3 Ceramics." Journal of Nanoscience and Nanotechnology 20, no. 7 (2020): 4353–57. http://dx.doi.org/10.1166/jnn.2020.17581.

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In spite of many attractive properties, the low fracture toughness of Al2O3 ceramic below ductilebrittle transition temperature limits its wide application in industry. One of the most obvious methods to improve the fracture toughness has been to add reinforcing compounds to fabricate nanostructured composite materials. In this respect, BN was evaluated as the reinforcing agent of Al2O3 ceramics using pulsed current activated sintering (PCAS). Highly dense alumina-BN composites with a relative density of up to 100% were achieved within short periods (2 min) by PCAS under a 80 MPa pressure. The
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19

Zhao, Xiaoyu, Wei Xu, Xiuxia Tang, Jiahong Wen, and Yaxin Wang. "Design of Ag/TiO2/Ag Composite Nano-Array Structure with Adjustable SERS-Activity." Materials 15, no. 20 (2022): 7311. http://dx.doi.org/10.3390/ma15207311.

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How to fabricate large area controllable surface-enhanced Raman scattering (SERS) active nanostructure substrates has always been one of the important issues in the development of nanostructure devices. In this paper, nano-etching technology and magnetron sputtering technology are combined to prepare nanostructure substrate with evolvable structure, and Ag/TiO2/Ag composites are introduced into the evolvable composite structure. The activity of SERS is further enhanced by the combination of TiO2 and Ag and the electron transfer characteristics of TiO2 itself. Deposition, plasma etching, and tr
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20

Emelin, Evgeny V., Hak Dong Cho, Vitaly I. Korepanov, et al. "Resistive Switching in Bigraphene/Diamane Nanostructures Formed on a La3Ga5SiO14 Substrate Using Electron Beam Irradiation." Nanomaterials 13, no. 22 (2023): 2978. http://dx.doi.org/10.3390/nano13222978.

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Memristors, resistive switching memory devices, play a crucial role in the energy-efficient implementation of artificial intelligence. This study investigates resistive switching behavior in a lateral 2D composite structure composed of bilayer graphene and 2D diamond (diamane) nanostructures formed using electron beam irradiation. The resulting bigraphene/diamane structure exhibits nonlinear charge carrier transport behavior and a significant increase in resistance. It is shown that the resistive switching of the nanostructure is well controlled using bias voltage. The impact of an electrical
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21

Habibi, Mohammad Hossein, Mojtaba Nasr Esfahani, and Terry A. Egerton. "Photochemical Characterization and Photocatalytic Properties of a Nanostructure CompositeTiO2Film." International Journal of Photoenergy 2007 (2007): 1–8. http://dx.doi.org/10.1155/2007/13653.

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An efficient and new composite titania film photocatalyst was fabricated by sol-gel technique, using precalcined nanopowder titanium dioxide filler mixed with a sol, spin coating, and heat treatment. The structural and photocatalytic properties of these films were characterized using SEM, XRD, and UV/Vis spectroscopies. Problems of film inhomogenity and defects which caused peeling and cracking during calcination because of film shrinkage were overcome by using methylcellulose (MC) as a dispersant. Composite films heat-treated at approximately500∘C have the greatest hardness values. Surface mo
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22

He, Zemin, Ping Yu, Huimin Zhang, et al. "Silicon nanostructure-doped polymer/nematic liquid crystal composites for low voltage-driven smart windows." Nanotechnology 33, no. 8 (2021): 085205. http://dx.doi.org/10.1088/1361-6528/ac3a3b.

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Abstract In this work, two silicon nanostructures were doped into polymer/nematic liquid crystal composites to regulate the electric-optical performance. Commercial SiO2 nanoparticles and synthesized thiol polyhedral oligomeric silsesquioxane (POSS-SH) were chosen as the dopants to afford the silicon nanostructures. SiO2 nanoparticles were physically dispersed in the composites and the nanostructure from POSS-SH was implanted into the polymer matrix of the composites via photoinduced thiol-ene crosslinking. Scanning electron microscopy results indicated that the implantation of POSS microstruc
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23

Garbiec, Dariusz, Volf Leshchynsky, Alberto Colella, Paolo Matteazzi, and Piotr Siwak. "Structure and Deformation Behavior of Ti-SiC Composites Made by Mechanical Alloying and Spark Plasma Sintering." Materials 12, no. 8 (2019): 1276. http://dx.doi.org/10.3390/ma12081276.

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Combining high energy ball milling and spark plasma sintering is one of the most promising technologies in materials science. The mechanical alloying process enables the production of nanostructured composite powders that can be successfully spark plasma sintered in a very short time, while preserving the nanostructure and enhancing the mechanical properties of the composite. Composites with MAX phases are among the most promising materials. In this study, Ti/SiC composite powder was produced by high energy ball milling and then consolidated by spark plasma sintering. During both processes, Ti
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24

Mutuma, Bridget K., Xiluva Mathebula, Isaac Nongwe, et al. "Unravelling the interfacial interaction in mesoporous SiO2@nickel phyllosilicate/TiO2 core–shell nanostructures for photocatalytic activity." Beilstein Journal of Nanotechnology 11 (December 9, 2020): 1834–46. http://dx.doi.org/10.3762/bjnano.11.165.

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Core–shell based nanostructures are attractive candidates for photocatalysis owing to their tunable physicochemical properties, their interfacial contact effects, and their efficacy in charge-carrier separation. This study reports, for the first time, on the synthesis of mesoporous silica@nickel phyllosilicate/titania (mSiO2@NiPS/TiO2) core–shell nanostructures. The TEM results showed that the mSiO2@NiPS composite has a core–shell nanostructure with a unique flake-like shell morphology. XPS analysis revealed the successful formation of 1:1 nickel phyllosilicate on the SiO2 surface. The additio
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Sheel, D. W., L. A. Brook, I. B. Ditta, et al. "Biocidal Silver and Silver/Titania Composite Films Grown by Chemical Vapour Deposition." International Journal of Photoenergy 2008 (2008): 1–11. http://dx.doi.org/10.1155/2008/168185.

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This paper describes the growth and testing of highly active biocidal films based on photocatalytically active films ofTiO2, grown by thermal CVD, functionally and structurally modified by deposition of nanostructured silver via a novel flame assisted combination CVD process. The resulting composite films are shown to be highly durable, highly photocatalytically active and are also shown to possess strong antibacterial behaviour. The deposition control, arising from the described approach, offers the potential to control the film nanostructure, which is proposed to be crucial in determining th
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Xin, Xue, Xingchi Zhao, Jing Gao, Zhanyong Yao, and Yunzhen Li. "Mechanism of Strain-Resistance Response of CNT/Polymer Composite Materials for Pavement Strain Self-Sensing Based on the Molecular Dynamics Simulation Method." Polymers 17, no. 11 (2025): 1427. https://doi.org/10.3390/polym17111427.

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Embedded and real-time monitoring of pavement mechanical state changes based on the strain detected by self-sensing sensors of polymer/conductive composites is a new way for pavement health monitoring. Strain monitoring, using polymer-based composite mechanosensitive materials, requires the formation of effective conductive networks and conductive channels within the composite material so that the mechanosensitive material is electrically conductive at the macroscopic level. However, the deformation of the pavement structure is much smaller in magnitude, which is about hundreds or even tens of
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Grebennikov, A. A., and O. V. Stognei. "Size Effect in Nix(MgO)100-X Nanocomposites." Solid State Phenomena 168-169 (December 2010): 361–64. http://dx.doi.org/10.4028/www.scientific.net/ssp.168-169.361.

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The possibility of obtaining a nanostructured composite in the Ni-Mg-O system by ion-beam sputtering has been investigated. The structural, magnetic and magnetoresistive properties of obtained samples have been investigated in a wide concentration range. The presence of the nanostructure in the obtained samples with Ni nanogranules (2-3 nm) has been confirmed by transmission electron microscopy. There is no observation of any magnetic or magnetoresistive properties at room temperature in the Nix(MgO)100-x composites. These properties were observed at 77 K. The obtained data mean that Curie tem
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Borisov, A. K., V. M. Egorov, V. A. Marikhin, and L. P. Myasnikova. "Thermal conductivity of PCM materials based on a composite consisting of n-alkane and nanoscale additives." Journal of Physics: Conference Series 2103, no. 1 (2021): 012094. http://dx.doi.org/10.1088/1742-6596/2103/1/012094.

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Abstract Composites based on n-alkane and nanoscale additives were investigated to determine the efficiency of heat transfer during phase transitions in phase change materials. It was found that the thermal conductivity of composite materials is several times higher than the thermal conductivity of the initial n-alkane. The observed effect is due to the specificity of the supramolecular nanostructure of the composite, which differs from the supramolecular structure of the nonadecane.
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Hojo, Junichi, Masato Uehara, and Naoya Enomoto. "Nanostructure Control from Amorphous Composite System." Journal of the Japan Society of Powder and Powder Metallurgy 47, no. 9 (2000): 975–80. http://dx.doi.org/10.2497/jjspm.47.975.

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Piticescu, Roxana M., Viorica Trandafir, V. Danciu, Z. Vuluga, Eugeniu Vasile, and D. Iordachescu. "Ternary Bio-Nanostructured Systems Prepared under High Pressure Conditions." Key Engineering Materials 361-363 (November 2007): 539–42. http://dx.doi.org/10.4028/www.scientific.net/kem.361-363.539.

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Many researchers have assumed that a combination of hydroxyl apatite (HAP) and collagen (COL) may be the best solution for bone replacement and have prepared their composites by several techniques [1]. However, such HAP/COL composite had no nanostructure similar to bone, and consequently indicated no bone-like mechanical properties. These results demonstrate that the chemical composition similar to bone only is insufficient for bone metabolism and mechanical properties. Mechanical and biological performance of this type of materials could be improved by adding TiO2 within the initial mixture o
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31

Hoha, A. V., A. A. Poznyak, S. M. Zavadski, D. A. Golosov, and A. N. Pligovka. "Anodic Composite Nanostructure: Formation, Morphology, Optical and Photoluminescent Properties." Doklady BGUIR 20, no. 5 (2022): 40–47. http://dx.doi.org/10.35596/1729-7648-2022-20-5-40-47.

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Two-layer Al/Nb (1000/200 nm) was deposited by sputtering using a DC magnetron method on Si wafers. The anodizing was in 0.2 M oxalic solution at 53 V, re-anodized in the 0.5 M boric acid in potentiodynamic mode at increase of potential until 400 V. For forming anodic composite nanostructure, the porous anodic aluminum oxide was partially removed in 50 % aqueous solution of phosphoric acid at 50°C for 1200 s. The morphology, photoluminescence, and optical reflection of an anodic composite nanostructure were investigated. The anodic composite nanostructure showed effective optical reflection in
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32

Stepina, Santa, Igors Klemenoks, Gita Sakale, and Maris Knite. "The Impact of Matrix Cross-Linking Degree on Chemo-Resistive Properties of Natural Rubber-Carbon Nanostructure Composite." Defect and Diffusion Forum 413 (December 17, 2021): 146–53. http://dx.doi.org/10.4028/www.scientific.net/ddf.413.146.

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The aim of this work is to investigate chemo-resistivity properties of natural rubber-carbon nanostructure composite, that’s why a change of diffusion characteristics and reversibility of electro-chemical properties of the composite with different degree values of crosslinks have been analysed. The composites are made from natural rubber (polyisoprene) as matrix material and high structure carbon black as electro-conductive filler. In order to investigate diffusion characteristics of volatile organic compounds (VOC) in relation to chemo-resistive response of composites simultaneous mass, lengt
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Nikolaichuk, A. N., V. A. Reshetov, S. B. Romadenkina, and T. N. Bugaeva. "Self-Propagating High-Temperature Synthesis of Composite Coatings on Aluminum and its Alloys." Izvestiya of Saratov University. Chemistry. Biology. Ecology 10, no. 2 (2010): 30–34. http://dx.doi.org/10.18500/1816-9775-2010-10-2-30-34.

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We found that the best way to obtain composites and coatings is nanochemical synthesis using nanopowders. Firstly we were ob­ tained nanostructure composite and ceramic materials on the surface of aluminum and its alloys (duralumin, avialumin, magnaliya, silumin), consisting of metal matrix (titanium, magnesium and aluminum) and ceramic filler (corundum, periclase, rutile).
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Dodero, Andrea, Maila Castellano, Paola Lova, et al. "Composite Poly(vinyl alcohol)-Based Nanofibers Embedding Differently-Shaped Gold Nanoparticles: Preparation and Characterization." Polymers 13, no. 10 (2021): 1604. http://dx.doi.org/10.3390/polym13101604.

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Poly(vinyl alcohol) nanofibrous mats containing ad hoc synthesized gold nanostructures were prepared via a single-step electrospinning procedure and investigated as a novel composite platform with several potential applications. Specifically, the effect of differently shaped and sized gold nanostructures on the resulting mat physical-chemical properties was investigated. In detail, nearly spherical nanoparticles and nanorods were first synthesized through a chemical reduction of gold precursors in water by using (hexadecyl)trimethylammonium bromide as the stabilizing agent. These nanostructure
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35

Bartoli, Mattia, Erik Piatti, and Alberto Tagliaferro. "A Short Review on Nanostructured Carbon Containing Biopolymer Derived Composites for Tissue Engineering Applications." Polymers 15, no. 6 (2023): 1567. http://dx.doi.org/10.3390/polym15061567.

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The development of new scaffolds and materials for tissue engineering is a wide and open realm of material science. Among solutions, the use of biopolymers represents a particularly interesting area of study due to their great chemical complexity that enables creation of specific molecular architectures. However, biopolymers do not exhibit the properties required for direct application in tissue repair—such as mechanical and electrical properties—but they do show very attractive chemical functionalities which are difficult to produce through in vitro synthesis. The combination of biopolymers w
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Wang, Guisen, Yi Wan, and Zhanqiang Liu. "Construction of Complex Structures Containing Micro-Pits and Nano-Pits on the Surface of Titanium for Cytocompatibility Improvement." Materials 12, no. 17 (2019): 2820. http://dx.doi.org/10.3390/ma12172820.

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The surface topography of medical implants plays an important role in the regulation of cellular responses. Microstructure and nanostructure surfaces have been proved to enhance cell spreading and proliferation with respect to smooth surfaces. In this study, we fabricated a new structure including micro-pits and nano-pits on the surface of titanium via sandblasting, acid etching and chemical oxidation to investigate the influence of composite structures on cell behavior. Meanwhile, the surface properties and corrosion resistance of treated samples were also tested. The micro/nanostructured tit
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37

Егоров, В. М., А. К. Борисов та В. А. Марихин. "Теплопроводность композита на основе н-алкана и наноразмерных добавок". Письма в журнал технической физики 48, № 2 (2022): 7. http://dx.doi.org/10.21883/pjtf.2022.02.51911.18915.

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A K Borisov, V M Egorov, V A Marikhin Composites based on n-alkane and nanoscale additives were investigated to determine the efficiency of heat transfer during phase transitions in phase change materials. It was found that the thermal conductivity of composite materials is several times higher than the thermal conductivity of the initial n-alkane. The observed effect is due to the specificity of the supramolecular nanostructure of the composite, which differs from the supramolecular structure of the nonadecane.
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Gärtner, Stefanie, Angelina Graf, Carla Triunfo, et al. "Turning Seashell Waste into Electrically Conductive Particles." International Journal of Molecular Sciences 23, no. 13 (2022): 7256. http://dx.doi.org/10.3390/ijms23137256.

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Biomaterials such as seashells are intriguing due to their remarkable properties, including their hierarchical structure from the nanometer to the micro- or even macroscopic scale. Transferring this nanostructure to generate nanostructured polymers can improve their electrical conductivity. Here, we present the synthesis of polypyrrole using waste seashell powder as a template to prepare a polypyrrole/CaCO3 composite material. Various synthesis parameters were optimized to produce a composite material with an electrical conductivity of 2.1 × 10−4 ± 3.2 × 10−5 S/cm. This work presents the trans
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39

Colomban, Philippe. "Sol-gel control of the micro/nanostructure of functional ceramic-ceramic and metal-ceramic composites." Journal of Materials Research 13, no. 4 (1998): 803–11. http://dx.doi.org/10.1557/jmr.1998.0102.

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The problems encountered to tailor simultaneously various specific chemical or physical properties are discussed. Selected polymeric precursors used in association with fine powders allow the control of the nano/microstructure of composites and hence the preparation of functional (FGM) and hierarchical reinforced (HRC) composites, making it possible to combine several kinds of fibers, interphases, and matrices in the same composite (hot microwave absorbent), to control the fiber/matrix interface (long life times composites), to achieve net-shape sintering of 3D composite matrices, and to prepa
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Galstyan, Vardan, Elisabetta Comini, Iskandar Kholmanov, et al. "A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors." Beilstein Journal of Nanotechnology 7 (October 10, 2016): 1421–27. http://dx.doi.org/10.3762/bjnano.7.133.

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A hybrid nanostructure based on reduced graphene oxide and ZnO has been obtained for the detection of volatile organic compounds. The sensing properties of the hybrid structure have been studied for different concentrations of ethanol and acetone. The response of the hybrid material is significantly higher compared to pristine ZnO nanostructures. The obtained results have shown that the nanohybrid is a promising structure for the monitoring of environmental pollutants and for the application of breath tests in assessment of exposure to volatile organic compounds.
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41

Trusova, Elena A., Dmitrii D. Titov, Asya M. Afzal, and Sergey S. Abramchuk. "Influence of Graphene Sheets on Compaction and Sintering Properties of Nano-Zirconia Ceramics." Materials 15, no. 20 (2022): 7342. http://dx.doi.org/10.3390/ma15207342.

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The use of a nanostructured graphene-zirconia composite will allow the development of new materials with improved performance properties and a high functionality. This work covers a stepwise study related to the creation of a nanostructured composite based on ZrO2 and graphene. A composite was prepared using two suspensions: nano-zirconia obtained by sol-gel synthesis and oxygen-free graphene obtained sonochemically. The morphology of oxygen-free graphene sheets, phase composition and the morphology of a zirconia powder, and the morphology of the synthesized composite were studied. The effect
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Zhang, Xin Fang, Xiao Qing Guo, Chang Yin Gao, and Zhi Qiang Jiang. "Nanaostructure-Dendrite Ti44Cu46Co4Zr6 Composite with Excellent Mechanical Properties." Advanced Materials Research 430-432 (January 2012): 369–72. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.369.

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New bulk nanostructure-dendrite Ti44Cu46Co4Zr6composite with excellent mechanical properties has been fabricated by using copper molder casting through systematic alloy design from binary Ti50Cu50. The results showed that the micro-scaledβ-Ti (M) solid solution embedding on the nanostructured matrix, which resulted in the excellent mechanical properties: high fracture strength (σf=2278 MPa) and good ductility (εp=9.01%) under quasi-static compression.
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43

Egorov V. M., Borisov A. K., and Marikhin V. A. "Thermal conductivity of a composite based on n-alkane and nanosized additives." Technical Physics Letters 48, no. 1 (2022): 49. http://dx.doi.org/10.21883/tpl.2022.01.52469.18915.

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Composites based on n-alkane and nanoscale additives were investigated to determine the efficiency of heat transfer during phase transitions in phase change materials. There was justified a new technique for obtaining thermal conductivity by analyzing shapes of the peaks recorded in thermograms by the method of differential scanning calorimetry. It was found that the thermal conductivity of composite materials is several times higher than the thermal conductivity of the initial n-alkane. The observed effect is due to the specificity of the supramolecular nanostructure of the composite, which d
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44

Marani, Debora, S. Licoccia, Enrico Traversa, and Masaru Miyayama. "Nanocomposite SPEEK/Titania Nanosheets (TNS) Proton Exchange Membranes for Fuel Cell Applications." Key Engineering Materials 421-422 (December 2009): 447–50. http://dx.doi.org/10.4028/www.scientific.net/kem.421-422.447.

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SPEEK-based composite membranes containing various amounts of titania nanosheets (TNS) as inorganic fillers were investigated for proton exchange membrane fuel cell applications. The samples were characterized for water uptake, proton conductivity (EIS), and structural features (SEM and XRD). Composites at low inorganic additive contents exhibited improved properties in terms of proton conductivity and water uptake behavior. Best improvements were observed for the composite containing only 0.95 wt% of TNS. This result could be associated to the unique nature of the two dimensional nanostructur
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Bi, Kaixi, Jiliang Mu, Wenping Geng, et al. "Reliable Fabrication of Graphene Nanostructure Based on e-Beam Irradiation of PMMA/Copper Composite Structure." Materials 14, no. 16 (2021): 4634. http://dx.doi.org/10.3390/ma14164634.

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Graphene nanostructures are widely perceived as a promising material for fundamental components; their high-performance electronic properties offer the potential for the construction of graphene nanoelectronics. Numerous researchers have paid attention to the fabrication of graphene nanostructures, based on both top-down and bottom-up approaches. However, there are still some unavoidable challenges, such as smooth edges, uniform films without folds, and accurate dimension and location control. In this work, a direct writing method was reported for the in-situ preparation of a high-resolution g
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Dikovska, A., G. Avdeev, G. Atanasova, T. Dilova, Ru Nikov, and N. Nedyalkov. "ZnO-NiO composite nanostructures produced by atmospheric PLD." Journal of Physics: Conference Series 2487, no. 1 (2023): 012002. http://dx.doi.org/10.1088/1742-6596/2487/1/012002.

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Abstract In this study, ZnO-NiO binary metal oxides were synthesized by pulsed laser deposition regarding applications as gas sensors. The technology was applied in air at atmospheric pressure. A compound target fabricated by partially covering a ZnO pellet by a Ni slice was used for ablation. The structure, morphology, composition, and optical properties of the as deposited samples were studied. It was found that composites consisting of ZnO and NiO were formed during the ablation process in air. Generally, the morphology of the as deposited specimens represented a highly porous nanostructure
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Lam, T. F., R. Sharma, J. Liddle, J. P. Winterstein, and P. Kabro. "EFTEM Study of a Carbon Nanostructure Composite." Microscopy and Microanalysis 18, S2 (2012): 1530–31. http://dx.doi.org/10.1017/s1431927612009506.

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BURGGRAAF, A., K. KEIZER, and B. VANHASSEL. "Ceramic nanostructure materials, membranes and composite layers." Solid State Ionics 32-33 (February 1989): 771–82. http://dx.doi.org/10.1016/0167-2738(89)90357-3.

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Joshi, Anupama, and Suwarna Datar. "Carbon nanostructure composite for electromagnetic interference shielding." Pramana 84, no. 6 (2015): 1099–116. http://dx.doi.org/10.1007/s12043-015-1005-9.

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Zhan, Yujie, Liangui Deng, Wei Dai, et al. "Fabrication of Large-Area Nanostructures Using Cross-Nanoimprint Strategy." Nanomaterials 14, no. 12 (2024): 998. http://dx.doi.org/10.3390/nano14120998.

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Nanostructures with sufficiently large areas are necessary for the development of practical devices. Current efforts to fabricate large-area nanostructures using step-and-repeat nanoimprint lithography, however, result in either wide seams or low efficiency due to ultraviolet light leakage and the overflow of imprint resin. In this study, we propose an efficient method for large-area nanostructure fabrication using step-and-repeat nanoimprint lithography with a composite mold. The composite mold consists of a quartz support layer, a soft polydimethylsiloxane buffer layer, and multiple intermed
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