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Journal articles on the topic 'Nanostructures et nanocomposites'

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1

Doan, Mai Quan, Nguyen Ha Anh, Hoang Van Tuan, et al. "Improving SERS Sensing Efficiency and Catalytic Reduction Activity in Multifunctional Ternary Ag-TiO2-GO Nanostructures: Roles of Electron Transfer Process on Performance Enhancement." Adsorption Science & Technology 2021 (October 1, 2021): 1–13. http://dx.doi.org/10.1155/2021/1169599.

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Multifunctional nanocomposites have received great attention for years; electron transfer (ET) is considered as an explanatory mechanism for enhancement of performance of these nanostructures. The existence of this ET process has been proved in many studies using either experimental or computational approaches. In this study, a ternary nanocomposite system of Ag/TiO2/GO was prepared to evaluate the performance enhancement in two experimental models: a physical model (i.e., surface-enhanced Raman scattering (SERS) sensor) and a chemical one (i.e., catalytic reduction reaction). The metal/semico
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2

Hammud, Hassan H., Ranjith Kumar Karnati, Nusaybah Alotaibi, Syed Ghazanfar Hussain, and Thirumurugan Prakasam. "Cobalt–Carbon Nanoparticles with Silica Support for Uptake of Cationic and Anionic Dyes from Polluted Water." Molecules 26, no. 24 (2021): 7489. http://dx.doi.org/10.3390/molecules26247489.

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Silica-supported hierarchical graphitic carbon sheltering cobalt nanoparticles Co-HGC@SiO2 (1) were prepared by pyrolysis at 850 °C of [Co(phen)(H2O)4]SO4·2H2O complex with silica in the presence of pyrene as a carbon source under nitrogen atmosphere. Nanocomposites (2) and (3) were obtained by acid treatment of (1) with HCl and HF acid, respectively. The nanocomposites showed rough hierarchical carbon microstructures over silica support decorated with irregular cobalt nanospheres and nanorods 50 to 200 nm in diameter. The nanoparticles consist of graphitic shells and cobalt cores. SEM, EDAX a
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Granitzer, Petra, Klemens Rumpf, Roberto Gonzalez-Rodriguez, and Jeffery Coffer. "Metal Filled Nanostructured Silicon a Platform to Interlink Magnetism and Optics." ECS Meeting Abstracts MA2023-02, no. 21 (2023): 1285. http://dx.doi.org/10.1149/ma2023-02211285mtgabs.

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This presentation deals with the utilization of nanostructured silicon (porous silicon and silicon nanotubes) for deposition of various metals, especially magnetic ones, within the pores/tubes. The novel magnetic properties of the semiconducting/magnetic composites which arise due to the nanoscopic size of the used materials are investigated with respect to optical and magnetic on-chip applications. Porous silicon is fabricated by anodization of a silicon wafer in an aqueous hydrofluoric solution. The morphology of the porous structures depends on the doping density of the used wafer and on th
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El-Zoka, Ayman A. "(Invited) Making Nanostructured Composites Via Inner-Pore Electrodeposition into Nanoporous Metals." ECS Meeting Abstracts MA2023-02, no. 21 (2023): 1281. http://dx.doi.org/10.1149/ma2023-02211281mtgabs.

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The selective removal of Ag from a solid solution of Ag-Au or Ag-Au-Pt yields a 3D bicontinuous, open-pore, nanoporous gold substrate (NPG), that is rich in the more noble metal(s)1 (Au and/or Pt). NPG has been successfully developed by the intelligent use of the conventionally-undesired dealloying corrosion. The excellent properties of NPG are attributed to the surface area-to-volume ratio, and high curvature of nanoligament surfaces2,3 . While a lot of recent research has been focusing on the structure/property relationships of NPG as a functional material in its own right4,5, the further us
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Askirka, Valiantsin. "Ratiometric optical laser power sensor based on polymer luminescent nanocomposite." Photonics Letters of Poland 17, no. 1 (2025): 29–31. https://doi.org/10.4302/plp.v17i1.1323.

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The fabrication of nanocomposite photonic materials suggests their use in a wide variety of applications. An essential requirement for such materials is their photostability and high photobleaching resistance. Both lanthanides and quantum dots are good candidates for embedding in the polymer matrix to obtain highly luminescent nanocomposites. This paper presents the concept for the ratiometric optical pulsed laser power sensor based on terbium and red-emitting semiconductor quantum dots co-doped polymer luminescent nanocomposite for application in inexpensive laser monitoring systems. Full Tex
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Rusu, Mihai M., Adriana Vulpoi, Isabelle Maurin, et al. "Thermal Evolution of C–Fe–Bi Nanocomposite System: From Nanoparticle Formation to Heterogeneous Graphitization Stage." Microscopy and Microanalysis 28, no. 2 (2022): 317–29. http://dx.doi.org/10.1017/s1431927622000241.

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Carbon xerogel nanocomposites with integrated Bi and Fe particles (C–Bi–Fe) represent an interesting model of carbon nanostructures decorated with multifunctional nanoparticles (NPs) with applicability for electrochemical sensors and catalysts. The present study addresses the fundamental aspects of the catalyzed growth of nano-graphites in C–Bi–Fe systems, relevant in charge transport and thermo-chemical processes. The thermal evolution of a C–Bi–Fe xerogel is investigated using different pyrolysis treatments. At lower temperatures (~750°C), hybrid bismuth iron oxide (BFO) NPs are frequently o
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7

Gan’shina, Elena A., Vladimir V. Garshin, Nikita S. Builov, Nikolay N. Zubar, Alexandr V. Sitnikov, and Evelina P. Domashevskaya. "Investigation of the Magnetic Properties of Amorphous Multilayer Nanostructures [(CoFeB)60C40/SiO2]200 and [(CoFeB)34(SiO2)66/C]46 by the Transversal Kerr Effect." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 22, no. 4 (2020): 438–45. http://dx.doi.org/10.17308/kcmf.2020.22/3114.

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Magnetic properties in amorphous multilayer nanostructures [(CoFeB)60C40/SiO2]200 and [(CoFeB)34(SiO2)66/C]46 with different content of the CoFeB magnetic alloy in metal-composite layers and inverse location of non-metallic phases C and SiO2 in composite layers or in interlayers, were investigated by magneto-optical methods in the transversal Kerr effect (TKE) geometry.Using the spectral and field dependences of the transversal Kerr effect TKE, it has been established that in the samples of both magnetic multilayer nanostructures (MLNS) the magneto-optical response and magnetic order are deter
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8

Ngene, Peter. "Interface Induced Fast Ion Conduction in Complex Hydride/Oxide Nanocomposites: Interplay between Hydride and Oxide Properties." ECS Meeting Abstracts MA2023-02, no. 5 (2023): 886. http://dx.doi.org/10.1149/ma2023-025886mtgabs.

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Solid-state electrolytes are crucial for next generation batteries with high energy density, long lasting and improved safety. The compatibility of most solid electrolytes with metallic anodes such as Li and Na metals, and cathodes such as sulfur, makes them suitable for high-capacity batteries (e.g., Li-S). They also address the safety concerns of current batteries by eliminating the flammable organic solvents in liquid electrolytes and by preventing/limiting dendrite formation. The lithium and sodium containing complex metal hydrides (e.g., LiBH4, NaBH4, LiCB11H12) have recently gained atten
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Yang, Bao Juan, Rui Xia, Su Bin Jiang, and Mei Zhen Gao. "SnSe/Cu<sub>2</sub>SnSe<sub>3</sub> Heterojunction Structure with High Initial Coulombic Efficiency for Lithium-Ion Battery Anodes." Key Engineering Materials 905 (January 4, 2022): 135–41. http://dx.doi.org/10.4028/www.scientific.net/kem.905.135.

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Due to high theoretical specific capacity and abundant reserves, tin selenide-based materials have received tremendous attentions in the fields of lithium-ion batteries. Nevertheless, the huge volume changes during insertion/de-intercalation processes deteriorate the Coulombic Efficiency greatly. In order to solve it, the researchers have made great efforts by means of controlling nanoparticles granularity, carbon coating, ion doping et al. In this study, SnSe/Cu2SnSe3 heterojunction nanocomposites were synthesized by solvo-thermal method. The resulting SnSe/Cu2SnSe3 is a three-dimensional flo
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Urper, Osman, Prabin Kharel, Nivedhitha Jothinarayanan, et al. "Eco-Friendly TiO2 and ZnO Biocar Nanocomposites: Transforming Water Decontamination and Bacteria Inactivation." ECS Meeting Abstracts MA2023-02, no. 47 (2023): 2292. http://dx.doi.org/10.1149/ma2023-02472292mtgabs.

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Water pollution ranging from harmful chemical substances to pathogenic bacteria is a growing problem from industry to society as a whole[1-2].There is a need to find new, cost-effective sustainable materials with high efficacy to clean up water and to protect the environment. Biocarbon (BC), a material with high specific surface area and large porosity, has some potential for removing water pollutants, but it also has many limitations. However, biocarbon-based composites can be tailored and may have a greater potential for removing contaminants in water. ZnO biochar and TiO2 biochar nanocompos
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Steier, Katharina, Peter James Kelly, and Justyna Kulczyk-Malecka. "Vanadium-Doped Ni/YSZ Anode Functional Layers for Solid Oxide Fuel Cells Produced via Magnetron Sputtering." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 76. http://dx.doi.org/10.1149/ma2023-015476mtgabs.

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The electrode performance of solid oxide fuel cells (SOFC) strongly depends on its microstructural characteristics, such as the porosity, percolated paths of ionically and electronically conductive phases and in particular, the grain size1. Deploying alternative manufacturing techniques that deposit nanostructured materials results in finer particle sizes and thus, increases the quantity of triple-phase boundaries. For that reason, the magnetron sputtering technique, which offers elemental distribution at the nanoscale, high deposition rates, reproducibility, scalability and excellent uniformi
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El Diwany, Farah, Taher Al Najjar, Basant Ali, Nageh K. Allam, and Ehab El Sawy. "(Invited) Fullerene and Fullerene Nanocomposites for an Enhanced All-Vanadium Redox Flow Battery." ECS Meeting Abstracts MA2022-01, no. 11 (2022): 819. http://dx.doi.org/10.1149/ma2022-0111819mtgabs.

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The dependence on fossil fuels to meet the world energy demand caused several social, economical, and environmental problems. An immediate switch to sustainable, clean, and renewable sources of energy is a necessity. To achieve this switch, developing efficient technologies to convert renewable energy sources into electricity is a necessity but not enough due to the intermittent behavior of renewable sources. The incorporation of energy storage systems as regulators allows for the sustainable integration of renewable energy resources into the electrical grid. Vanadium redox flow batteries (VRF
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Nuftolla, Aidarbek, Aizhan Rakhmanova, Baktiyar Soltabayev, and Almagul Mentbayeva. "ZnO Intercalated PVA-PEDOT:PSS Composite Nanofiber for Detection of Ammonia Gases." ECS Meeting Abstracts MA2023-01, no. 53 (2023): 2654. http://dx.doi.org/10.1149/ma2023-01532654mtgabs.

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Keywords: Ammonia, Electrospinning, and Zinc Oxide The matter of air pollution has dramatically risen the worldwide concern on detecting of hazardous gases present in the atmosphere because they are highly detrimental to human health [4,5]. Additionally, the detection and monitoring of such harmful gases is necessary for process control in the industry as well as the general safety of the environment. Zinc oxide (ZnO) is an n-type semiconductor with a wide direct bandgap width (3.37 eV), high excitation binding energy (60meV), high electron mobility, thermal stability, and excellent electrical
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14

Akbar, Said Ali. "Sensor Gas Amonia Berbasis Polimer Konduktif Polianilina: Sebuah Review." QUIMICA: Jurnal Kimia Sains dan Terapan 3, no. 2 (2022): 1–8. http://dx.doi.org/10.33059/jq.v3i2.4678.

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Artikel review ini memberikan informasi tentang aplikasi polianilina (PANI) dan kompositnya sebagai sensor gas berbahaya khususnya amonia (NH3). Kajian yang dibahas pada artikel ini meliputi sifat gas NH3, material komposit, kinerja sensor, serta limit deteksi. Tinjauan sensor gas amonia berbasis polimer konduktif polianilina secara menyeluruh diambil dari referensi sepuluh tahun terakhir. Sebagai contoh, komposit polianilina dengan turunan karbon seperti reduced Graphene Oxide (rGO) dan Carbon Nanotube menunjukkan limit deteksi hingga 46 ppb dengan waktu pemulihan hanya 75 detik. Selain itu,
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de Jesus, Jemmyson. "Nanostructured Materials as an Analytical Strategy to Unravel and Treat Human Diseases: The Practical Challenges Behind the Theory." Brazilian Journal of Analytical Chemistry 9, no. 36 (2022): 10–13. http://dx.doi.org/10.30744/brjac.2179-3425.letter.jrdejesus.n36.

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In recent years, the world has witnessed important progress in the field of nanotechnology, which has strongly impacted the various fields of science and industry, creating new applications in electronics, medicine, and energy storage. In this sense, several nanoscale materials with different compositions have been produced and reported in the literature. Nanomaterials can be classified according to their composition. For example, silicon dioxide (SiO2), quantum dots (QDs), carbon dots (CDs), and nanoparticles (metallic and non-metallic), among others, have been widely synthetized and applied
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Vrushabendrakumar, Damini, Kazi Alam, Narendra Chaulagain, Navneet Kumar, and Karthik Shankar. "Visible Light Driven CO2 Photoreduction Using TiO2 Nanotube Arrays Embedded with Low Bandgap Carbon Nitride Nanoparticles." ECS Meeting Abstracts MA2023-02, no. 9 (2023): 1033. http://dx.doi.org/10.1149/ma2023-0291033mtgabs.

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The extraordinary thermal and photochemical stability, superior charge transport, and tunable band positions of graphitic carbon nitride (g-CN), which is constituted of elements that are plentiful on Earth, renders g-CN an important semiconductor photocatalyst for heterogeneous catalysis [1,2]. Despite these advantages, carbon nitride-based semiconductors do not function effectively as freestanding photocatalysts or photoelectrodes due to a rapid carrier recombination rate and a slightly wide bandgap that only enables them to capture blue and UV photons [3,4]. Anodically formed TiO2 nanotube a
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Kumta, Prashant, Oleg Velikokhatnyi, and Ramalinga Kuruba. "(Invited) From Lithiated Transition Metal Oxide to Silicon and Lithium-Sulfur Systems: An Evolution of Electrochemically Active Materials." ECS Meeting Abstracts MA2022-02, no. 2 (2022): 138. http://dx.doi.org/10.1149/ma2022-022138mtgabs.

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Energy storage is vital for driving an energy independent world economy that is currently largely dependent on exploiting natural reserves supplemented by oil and gas exports. The field of Li-ion batteries continues to witness burgeoning progress since the commercialization of the first Li-ion battery (LIB) by Sony in 1991, and is at present, clearly the flagship rechargeable battery system. Correspondingly, enormous progress is seen in cathodes, electrolytes as well as anodes [1]. New materials have continuously evolved. Lithiated transition metal oxides despite advances in various systems, a
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Jahava, Marlina, Mohd Hafiz Jali, Danusha Pillai та ін. "Seventh Sense Research Group Home Journals For Authors For Editors For Reviewers Call for Paper May 2023 IJEEE Aim & Scope Editorial Board Paper Submission Current Issue Archives Publication Ethics Guidelines for Authors Guidelines for Editors Guidelines for Reviewer Indexing Article Processing charges Mode of Payment for APC Paper Template Copyright Form Alcohol Sensing Device using Glass Substrates Coated with Agarose Gel and HEC/PVDF Nanomaterial International Journal of Electrical and Electronics Engineering © 2023 by SSRG - IJEEE Journal Volume 10 Issue 4 Year of Publication : 2023 Authors : Marlina Jahava, Mohd Hafiz Jali, Danusha Pillai, Haziezol Helmi Mohd Yusof, Md. Ashadi Md Johari, Aminah Ahmad, Siti Halma Johari, Sulaiman Wadi Harun, Siddharth Thokchom 10.14445/23488379/IJEEE-V10I4P104 pdf How to Cite? Marlina Jahava, Mohd Hafiz Jali, Danusha Pillai, Haziezol Helmi Mohd Yusof, Md. Ashadi Md Johari, Aminah Ahmad, Siti Halma Johari, Sulaiman Wadi Harun, Siddharth Thokchom, "Alcohol Sensing Device using Glass Substrates Coated with Agarose Gel and HEC/PVDF Nanomaterial," SSRG International Journal of Electrical and Electronics Engineering, vol. 10, no. 4, pp. 37-45, 2023. Crossref, https://doi.org/10.14445/23488379/IJEEE-V10I4P104 Abstract: This paper reported the development of an alcohol sensor based on a glass substrate platform. The glass substrate was coated with two nanomaterial types: Hydroxyethylcellulose/Polyvinylidene fluoride (HEC/PVDF) and Agarose Gel, for comparison purposes. Three layers of coating material have been applied to the glass substrate to obtain the optimum sensing response. The coated glass substrate is kept dry for 24 hours before expose to variations of ethanol concentration to investigate the sensing response. A significant response to alcohol concentrations has been observed for both samples due to the changeable refractive index layer of the coating material. The sensitivity improved by a factor of 1.18 and 1.51, respectively, compared to the bared glass. The proposed sensor employed low-cost and commercially available components such as a glass substrate, LED light source and Arduino microcontroller to perform as an alcohol sensor. It prevents using expensive laser-based sensors, which is less practical in real industrial applications. Based on the experiment results, the HEC/PVDF-coated glass produced has demonstrated better results in terms of repeatability, hysteresis, stability and sensitivity as compared to agarose gel-coated glass. Hence the proposed sensor has a decent potential as an alcohol sensor Keywords: Alcohol sensor, Glass substrate, HEC/PVDF, Agarose gel. References: [1] G. 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Arunganesh et al., "Smart Voltage Protection System for Industries," International Journal of Electrical and Electronics Engineering, vol. 8, pp. 5-12, 2021. [CrossRef] [Publisher Link] [34] Mohd Hafiz Jali et al., "Agarose Gel Coated Glass Substrate for Formaldehyde Sensing Application," PrzeglĄd Elektrotechniczny, vol. 1, pp. 97-101, 2022. [CrossRef] [Publisher Link] [35] Gerd H. Woehrle, Marvin G. Warner, and James E. Hutchison, "Molecular-Level Control of Feature Separation in One-Dimensional Nanostructure Assemblies Formed by Biomolecular Nanolithography," Langmuir, vol. 20, pp. 5982-5988, 2004. [CrossRef] [Google Scholar] [Publisher Link] [36] M. Batumalay et al., "Tapered Plastic Optical Fiber Coated with Zno Nanostructures for the Measurement of Uric Acid Concentrations and Changes in Relative Humidity," Sensors and actuators A: Physical, vol. 210, pp. 190-196, 2014. [CrossRef] [Google Scholar] [Publisher Link] [37] Feng-Bo Yang et al., "A Low-Cost Light-Emitting Diode Induced Fluorescence Detector for Capillary Electrophoresis Based on an Orthogonal Optical Arrangement," Talanta, vol. 78, no. 3, pp. 1155-1158, 2009. [CrossRef] [Google Scholar] [Publisher Link] Quick Links Home Journals Call For Paper Authors Paper submission Preparation Guidelines Review Process Editors Reviewer Guidelines Join as Editor Special Issue Proposal Events Conferences Awards Special Issues SSRG Contact Us Indexing Follow Us Facebook Linkedin Twitter © SSRG International Journals - All right reserved Creative Commons License SSRG site and its metadata are licensed under CC BY-NC-ND Designed by VTS". International Journal of Electrical and Electronics Engineering 10, № 4 (2023): 37–45. http://dx.doi.org/10.14445/23488379/ijeee-v10i4p104.

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Sundramoorthy, Ashok K. "Two-Dimensional MXene (Ti3C2Tx)-based Nano-Photosensitizers for Enhanced Photothermal Ablation of Tumor Cells." Micro and Nanosystems 17 (October 25, 2024). http://dx.doi.org/10.2174/0118764029342774241024093132.

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Cancer remains one of the leading causes of death globally, accounting for approximately one in every six deaths. Traditional cancer therapies, including surgery, chemotherapy, chemoimmunotherapy, and radiation, face numerous challenges and limitations. In this context, we explore the advantages of photothermal therapy (PTT) using two-dimensional (2D) MXene-based nanocomposites for cancer treatment. MXenes, composed of abundant and non-toxic elements, such as titanium (Ti), carbon (C), fluorine (F), and oxygen (O), demonstrate low toxicity and are promising candidates in photothermal cancer th
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Alotaibi, Nusaybah, Hassan H. Hammud, Nasreen Al Otaibi, Syed Ghazanfar Hussain, and Thirumurugan Prakasam. "Novel cobalt–carbon@silica adsorbent." Scientific Reports 10, no. 1 (2020). http://dx.doi.org/10.1038/s41598-020-75367-0.

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Abstract Recently, carbon nanostructures are of high importance due to their unique characteristics and interesting applications. Pyrolysis of anthracene with cobalt complex Co(2,2′-bipy)Cl2(1), where (2,2′-bipy) is 2,2′-bipyridine, in the absence and presence of silica gave in high yield cobalt-carbon nanocomposite CoCNC (2) and CoCNC@SiO2(3) at 600 °C and 850 °C, respectively. They were characterized using SEM, TEM, PXRD, Raman and XPS. (3) and (2) contain core–shell cobalt(0)/cobalt oxide-graphite with or without silica support. PXRD indicates that (2) contains crystalline hexagonal α-Co an
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Cc, Ko, Wu Y-L, Douglas Wh, Narayanan R, and Hu W-S. "In Vitro and In Vivo Tests Of Hydroxyapatite-Gleatin Nanocomposites For Bone Regeneration: A Preliminary Report." MRS Proceedings 823 (2004). http://dx.doi.org/10.1557/proc-823-w13.8.

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AbstractA biomimetic process has been developed to fabricate hydroxyapatite-gelatin (HAP-GEL) nanocomposites for bone regeneration (Chang and Ko et al. 2003). We hypothesize that this newly developed HAP-GEL is osteoconductive and is suitable for tissue engineered scaffolds. This preliminary study is aimed to characterize cell affinity and osseous regeneration of the HAP-GEL. The HAP-GEL was synthesized according to the procedures described in the previous publication. The attachment and proliferation of human fetal osteoblasts on HAP-GEL discs were evaluated using three different gelatin cont
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Wilde, Gerhard. "Deformation-induced Nanocomposites." MRS Proceedings 977 (2006). http://dx.doi.org/10.1557/proc-977-0977-ff05-03.

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AbstractComposite approaches, e.g. with mutually immiscible constituents or including at least one refractory phase, present a viable and maybe even necessary route for stabilizing massive nanostructured materials against detrimental coarsening under thermal and/or mechanical loading conditions [1]. A different way for nanoscaled composite formation is presented by the nanocrystallization of marginally glass-forming amorphous alloys, such as Al-rich alloys with rare earth and transition metal additions. Such composite systems that are stabilized at nanometer-scaled structure sizes due to diffu
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Alvarado-Tenorio, Bonifacio, Angel Romo-Uribe, and Patrick T. Mather. "Stress-induced Bimodal Ordering in POSS/PCL Biodegradable Shape Memory Nanocomposites." MRS Proceedings 1450 (2012). http://dx.doi.org/10.1557/opl.2012.1327.

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ABSTRACTSimultaneous wide- and small- angle X-ray scattering (WAXS-SAXS) has revealed a stress-induced bimodal orientation of POSS crystals and PCL chains, both in a constrained POSS/PCL crosslinked network architecture with shape memory properties. POSS/PCL nanocomposites with molecular weight of 2,600 g/mol exhibiting shape memory behavior were synthesized and variation of crosslinker molar ratio was used to obtain POSS/PCL networks with different crosslink density (Alvarado-Tenorio et al., Macromolecules, 44, 5682, 2011). In that study it was shown that there are POSS crystals embedded in a
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sprotocols. "Enhancing graphene/CNT based electrochemical detection using magneto-nanobioprobes." January 3, 2015. https://doi.org/10.5281/zenodo.13698.

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Authors: Priyanka Sharma, V Bhalla, E Senthil Prasad, V Dravid, G Shekhawat &amp; C. Raman Suri ### Abstract This protocol describes an optimized signal amplification strategy to develop an ultra-sensitive magneto-electrochemical biosensing platform. The new protocol combines the advantages of carbon nanotube (CNT) and reduced graphene oxide (rGO) together with electrochemical bursting of magnetic nanoparticles. The method involves synthesis of gold-iron (Au/Fe) nano-structures functionalized with specific antibodies to be used as nanobioprobes (Ab-Au/Fe). The next step requires the precise de
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