Готові списки джерел за темами / Materials Chemistry - Graphene Nanostructure

Добірка наукової літератури з теми "Materials Chemistry - Graphene Nanostructure"

Автор: Grafiati
Опубліковано: 7 вересня 2023

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Статті в журналах з теми "Materials Chemistry - Graphene Nanostructure"

1

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 (February 6, 2022): 1848. http://dx.doi.org/10.3390/ijms23031848.

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Анотація:
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, such as hydrazine, being environmentally unfriendly and limiting the final application of composites. Therefore, green chemical reducing agents and synthesis methods of carbon nanostructures should be employed. This paper reviews the state of the art regarding the green chemical reduction of graphene oxide reported in the last 3 years. Moreover, alternative graphitic nanostructures, such as carbons derived from biomass and carbon nanostructures supported on clays, are pointed as eco-friendly and sustainable carbonaceous additives to engineering polymer properties in composites. Finally, the application of these carbon nanostructures in polymer composites is briefly overviewed.
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2

Wallace, Steaphan M., Thiyagu Subramani, Wipakorn Jevasuwan, and Naoki Fukata. "Conversion of Amorphous Carbon on Silicon Nanostructures into Similar Shaped Semi-Crystalline Graphene Sheets." Journal of Nanoscience and Nanotechnology 21, no. 9 (September 1, 2021): 4949–54. http://dx.doi.org/10.1166/jnn.2021.19329.

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Graphene sheets displaying partial crystallinity and nanowire structures were formed on a silicon substrate with silicon nanowires by utilizing an amorphous carbon source. The carbon source was deposited onto the silicon nanostructured substrate by breaking down a polymer precursor and was crystallized by a nickel catalyst during relatively low temperature inert gas annealing. The resulting free-standing graphene-based material can remain on the substrate surface after catalyst removal or can be removed as a separate film. The film is flexible, continuous, and closely mimics the silicon nanostructure. This follows research on similar solid carbon precursor derived semi-crystalline graphene synthesis procedures and applies it to complex silicon nanostructures. This work examined the progression of the carbon, finding that it migrates through the thin film catalyst and forms the graphene only on the other side, and that the process can successfully be used to form 3D shaped graphene films. Semi-crystalline graphene has the possible application of being flexible transparent electrodes, and the 3D shaping opens the possibility of more complex configurations and applications.
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3

Tamm, Aile, Tauno Kahro, Helle-Mai Piirsoo, and Taivo Jõgiaas. "Atomic-Layer-Deposition-Made Very Thin Layer of Al2O3, Improves the Young’s Modulus of Graphene." Applied Sciences 12, no. 5 (February 27, 2022): 2491. http://dx.doi.org/10.3390/app12052491.

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Nanostructures with graphene make them highly promising for nanoelectronics, memristor devices, nanosensors and electrodes for energy storage. In some devices the mechanical properties of graphene are important. Therefore, nanoindentation has been used to measure the mechanical properties of polycrystalline graphene in a nanostructure containing metal oxide and graphene. In this study the graphene was transferred, prior to the deposition of the metal oxide overlayers, to the Si/SiO2 substrate were SiO2 thickness was 300 nm. The atomic layer deposition (ALD) process for making a very thin film of Al2O3 (thickness comparable with graphene) was applied to improve the elasticity of graphene. For the alumina film the Al(CH3)3 and H2O were used as the precursors. According to the micro-Raman analysis, after the Al2O3 deposition process, the G-and 2D-bands of graphene slightly broadened but the overall quality did not change (D-band was mostly absent). The chosen process did not decrease the graphene quality and the improvement in elastic modulus is significant. In case the load was 10 mN, the Young’s modulus of Si/SiO2/Graphene nanostructure was 96 GPa and after 5 ALD cycles of Al2O3 on graphene (Si/SiO2/Graphene/Al2O3) it increased up to 125 GPa. Our work highlights the correlation between nanoindentation and defects appearance in graphene.
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4

Xu, Yangyang, Jinyang Liu, Chuandong Zuo, Hongbing Cai, Ping Wu, Zhigao Huang, Fachun Lai, Limei Lin, Weifeng Zheng, and Yan Qu. "The Role of Hydrogen on the Growth of Graphene Nanostructure Using a Two-Step Method." Journal of Nanoscience and Nanotechnology 19, no. 11 (November 1, 2019): 7294–300. http://dx.doi.org/10.1166/jnn.2019.16652.

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Chemical vapor deposition (CVD) is widely applied in synthesizing high quality graphene, whose size, shape and structure are strongly impacted by the hydrogen concentration and, however, its role is not fully understood. In the traditional CVD, the concentration of the hydrogen keeps the constant in whole synthesis process and subsequently the nucleation and growth process are carried out simultaneously, therefore, its roles are usually confused and indistinguishable. In this report, the role of hydrogen on the growth of graphene nanostructure was creatively studied by introducing a two-step method which divided the nucleation and growth process for the first time. In the first step, the hexagonal graphene domain grown with the same conditions was used as precursor to eliminate the impact of the nucleation. In the second step, the role of hydrogen on the growth of graphene nanostructure was investigated by controlling the hydrogen concentration. The evolution behavior of the graphene nanostructure with the hydrogen concentration was systematically investigated. Two roles of the hydrogen, namely growth and etching modes, are clearly disclosed and then a possible mechanism was proposed. The results shown here may provide valuable guidance to understand the graphene growth mechanism and further advance the synthesis of unique graphene nanostructure.
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5

Huang, Yue, Jiayi Lin, Liyue Liu, Qing Lu, Xiaoling Zhang, Ganghua Zhang, and Dezeng Li. "Enhanced performance of graphene transparent conductive films by introducing SiO2 bilayer antireflection nanostructure." New Journal of Chemistry 43, no. 48 (2019): 19063–68. http://dx.doi.org/10.1039/c9nj03671g.

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6

Zeng, B., Z. G. Li, and W. J. Zeng. "N-doped graphene-cadmium sulfide nanoplates and their improved photocatalytic performance." Digest Journal of Nanomaterials and Biostructures 16, no. 2 (2021): 627–33. http://dx.doi.org/10.15251/djnb.2021.162.627.

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Cadmium sulfide nanoplates and N-doped graphene composites (CdS NP/NG) were synthesized for use as photocatalysts. Photocatalytic testing showed that both the two dimensional (2D) nanostructure and nitrogen-doping of graphene contributed to its excellent photocatalytic performance. Here, the 2D nanostructure provided a large number of active sites and the nitrogen-doping of graphene could improve its electronic properties. This work offers a new insight for obtaining a highly efficient CdS/graphene photocatalyst.
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7

Liu, Yansheng, Zhenle Qin, Junpeng Deng, Jin Zhou, Xiaobo Jia, Guofu Wang, and Feng Luo. "The Advanced Applications of 2D Materials in SERS." Chemosensors 10, no. 11 (November 2, 2022): 455. http://dx.doi.org/10.3390/chemosensors10110455.

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Анотація:
Surface-enhanced Raman scattering (SERS) as a label-free, non-contact, highly sensitive, and powerful technique has been widely applied in determining bio- and chemical molecules with fingerprint recognitions. 2-dimensional (2D) materials with layered structures, tunable optical properties, good chemical/physical stabilities, and strong charge–transfer interaction with molecules have attracted researchers’ interests. Two-D materials with a large and flat surface area, as well as good biocompatibility have been considered promising candidates in SERS and widely applied in chemical and bio-applications. It is well known that the noble metallic nanostructures with localized surface plasmon effects dominate the SERS performance. The combination of noble metallic nanostructure with 2D materials is becoming a new and attractive research domain. Until now, the SERS substrates combined with 2D materials, such as 2D graphene/metallic NPs, 2D materials@metallic core-shell structures, and metallic structure/2D materials/metallic structure are intensely studied. In this review, we introduce different kinds of fabrication strategies of 2D and 3D SERS substrates combing with 2D materials as well as their applications. We hope this review will help readers to figure out new ideas in designing and fabricating SERS substrates with high SERS performance that could enlarge the applicable domains of SERS.
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8

Shang, Lina, Faming Kang, Wenze Gao, Zheng Zhou, and Wei Xu. "On-Surface Synthesis of sp-Carbon Nanostructures." Nanomaterials 12, no. 1 (December 31, 2021): 137. http://dx.doi.org/10.3390/nano12010137.

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Анотація:
The on-surface synthesis of carbon nanostructures has attracted tremendous attention owing to their unique properties and numerous applications in various fields. With the extensive development of scanning tunneling microscope (STM) and noncontact atomic force microscope (nc-AFM), the on-surface fabricated nanostructures so far can be characterized on atomic and even single-bond level. Therefore, various novel low-dimensional carbon nanostructures, challenging to traditional solution chemistry, have been widely studied on surfaces, such as polycyclic aromatic hydrocarbons, graphene nanoribbons, nanoporous graphene, and graphyne/graphdiyne-like nanostructures. In particular, nanostructures containing sp-hybridized carbons are of great advantage for their structural linearity and small steric demands as well as intriguing electronic and mechanical properties. Herein, the recent developments of low-dimensional sp-carbon nanostructures fabricated on surfaces will be summarized and discussed.
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9

Catania, Federica, Elena Marras, Mauro Giorcelli, Pravin Jagdale, Luca Lavagna, Alberto Tagliaferro, and Mattia Bartoli. "A Review on Recent Advancements of Graphene and Graphene-Related Materials in Biological Applications." Applied Sciences 11, no. 2 (January 10, 2021): 614. http://dx.doi.org/10.3390/app11020614.

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Graphene is the most outstanding material among the new nanostructured carbonaceous species discovered and produced. Graphene’s astonishing properties (i.e., electronic conductivity, mechanical robustness, large surface area) have led to a deep change in the material science field. In this review, after a brief overview of the main characteristics of graphene and related materials, we present an extensive overview of the most recent achievements in biological uses of graphene and related materials.
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10

Žurauskienė, Nerija. "Engineering of Advanced Materials for High Magnetic Field Sensing: A Review." Sensors 23, no. 6 (March 8, 2023): 2939. http://dx.doi.org/10.3390/s23062939.

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Advanced scientific and industrial equipment requires magnetic field sensors with decreased dimensions while keeping high sensitivity in a wide range of magnetic fields and temperatures. However, there is a lack of commercial sensors for measurements of high magnetic fields, from ∼1 T up to megagauss. Therefore, the search for advanced materials and the engineering of nanostructures exhibiting extraordinary properties or new phenomena for high magnetic field sensing applications is of great importance. The main focus of this review is the investigation of thin films, nanostructures and two-dimensional (2D) materials exhibiting non-saturating magnetoresistance up to high magnetic fields. Results of the review showed how tuning of the nanostructure and chemical composition of thin polycrystalline ferromagnetic oxide films (manganites) can result in a remarkable colossal magnetoresistance up to megagauss. Moreover, by introducing some structural disorder in different classes of materials, such as non-stoichiometric silver chalcogenides, narrow band gap semiconductors, and 2D materials such as graphene and transition metal dichalcogenides, the possibility to increase the linear magnetoresistive response range up to very strong magnetic fields (50 T and more) and over a large range of temperatures was demonstrated. Approaches for the tailoring of the magnetoresistive properties of these materials and nanostructures for high magnetic field sensor applications were discussed and future perspectives were outlined.
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Дисертації з теми "Materials Chemistry - Graphene Nanostructure"

1

MANGADLAO, JOEY DACULA. "Multifunctional Materials from Nanostructured Graphene and Derivatives." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1448279230.

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2

Zedan, Abdallah. "GRAPHENE-BASED SEMICONDUCTOR AND METALLIC NANOSTRUCTURED MATERIALS." VCU Scholars Compass, 2013. http://scholarscompass.vcu.edu/etd/457.

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Анотація:
Exciting periods of scientific research are often associated with discoveries of novel materials. Such period was brought about by the successful preparation of graphene which is a 2D allotrope of carbon with remarkable electronic, optical and mechanical properties. Functional graphene-based nanocomposites have great promise for applications in various fields such as energy conversion, opteoelectronics, solar cells, sensing, catalysis and biomedicine. Herein, microwave and laser-assisted synthetic approaches were developed for decorating graphene with various semiconductor, metallic or magnetic nanostructures of controlled size and shape. We developed a scalable microwave irradiation method for the synthesis of graphene decorated with CdSe nanocrystals of controlled size, shape and crystalline structure. The efficient quenching of photoluminescence from the CdSe nanocrystals by graphene has been explored. The results provide a new approach for exploring the size-tunable optical properties of CdSe nanocrystals supported on graphene which could have important implications for energy conversion applications. We also extended this approach to the synthesis of Au-ceria-graphene nanocomposites. The synthesis is facilely conducted at mild conditions using ethylenediamine as a solvent. Results reveal significant CO conversion percentages between 60-70% at ambient temperatures. Au nanostructures have received significant attention because of the feasibility to tune their optical properties by changing size or shape. The coupling of the photothermal effects of these Au nanostructures of controlled size and shape with GO nanosheets dispersed in water is demonstrated. Our results indicate that the enhanced photothermal energy conversion of the Au-GO suspensions could to lead to a remarkable increase in the heating efficiency of the laser-induced melting and size reduction of Au nanostructures. The Au-graphene nanocomposites are potential materials for photothermolysis, thermochemical and thermomechanical applications. We developed a facile method for decorating graphene with magnetite nanocrystals of various shapes (namely, spheres, cubes and prisms) by the microwave-assisted-reduction of iron acetylacetonate in benzyl ether. The shape control was achieved by tuning the mole ratio between the oleic acid and the oleyamine. The structural, morphological and physical properties of graphene-based nanocomposites described herein were studied using standard characterization tools such as TEM, SEM, UV-Vis and PL spectroscopy, powder X-ray diffraction, XPS and Raman spectroscopy.
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3

Risley, Mason J. "Surfactant-assisted exfoliation and processing of graphite and graphene." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/48980.

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Surfactant assisted solution exfoliation of expanded graphite by means of sonication was carried out in an attempt to produce non-covalent charge functionality on the surface of graphene for the directed self assembly of graphene films on patterned substrates via electrostatic interactions. This thesis includes the results of experimental research associated with: 1) quantifying the effectiveness of various di-functionalized dithienothiophene surfactant small molecules, 2) further understanding the surface affinity and interaction mechanism between these surfactant molecules and the surface of expanded graphite and graphene and 3) experimentally testing the feasibility of the directed self-assembly of graphene films by means of charge functionalization of graphene by the surfactant molecules adsorbed onto the surface of exfoliated graphene.
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4

Li, Yanguang. "Nanostructured Materials for Energy Applications." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275610758.

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5

Nordlund, Michael. "Carbon Nanostructures – from Molecules to Functionalised Materials : Fullerene-Ferrocene Oligomers, Graphene Modification and Deposition." Doctoral thesis, Uppsala universitet, Organisk kemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-327189.

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The work described in this thesis concerns development, synthesis and characterisation of new molecular compounds and materials based on the carbon allotropes fullerene (C60) and graphene. A stepwise strategy to a symmetric ferrocene-linked dumbbell of fulleropyrrolidines was developed. The versatility of this approach was demonstrated in the synthesis of a non-symmetric fulleropyrrolidine-ferrocene-tryptophan triad. A new tethered bis-aldehyde, capable of regiospecific bis-pyrrolidination of a C60-fullerene in predominantly trans fashion, was designed, synthesised and reacted with glycine and C60 to yield the desired N-unfunctionalised bis(pyrrolidine)fullerene. A catenane dimer composed of two bis(pyrrolidine)fullerenes was obtained as a minor co-product. From the synthesis of the N-methyl analogue, the catenane dimer could be separated from the monomeric main product and fully characterised by NMR spectroscopy. Working towards organometallic fullerene-based molecular wires, the N-unfunctionalised bis(pyrrolidine)fullerene was coupled to an activated carboxyferrocene-fullerene fragment by amide links to yield a ferrocene-linked fullerene trimer, as indicated by mass spectrometry from reactions carried out at small scale A small library of conjugated diarylacetylene linkers, to be coupled to C60 via metal-mediated hydroarylation, was developed. Selected linker precursors were prepared and characterised, and the hydroarylation has been adapted using simple arylboronic acids. Few-layer graphene was prepared and dip-deposited from suspension onto a piezoelectric polymer substrate. Spontaneous side-selective deposition was observed and, from the perspective of non-covalent interaction, rationalised as being driven by the inbuilt polarization of the polymer. Aiming for selectively edge-oxidized graphene, a number of graphitic materials were treated with a combination of ozone and hydrogen peroxide under sonication. This mild, metal-free procedure led to edge-oxidation and exfoliation with very simple isolation of clean materials indicated by microscopy, spectroscopy, and thermogravimetric analysis.
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6

Gnanaprakasa, Tony Jefferson. "Surface Engineering and Synthesis of Graphene and Fullerene Based Nanostructures." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/605216.

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Graphene is a two-dimensional carbon structure that exhibits remarkable structure-property relations. Consequently, there has been immense effort undertaken towards developing methods for graphene synthesis. Chemical vapor deposition (CVD) and chemical exfoliation from colloidal suspensions are two common methods used for obtaining graphene films. However, the underlying experimental conditions have to be carefully optimized in order to obtain graphene films of controllable thickness and morphology. In this context, a significant part of this dissertation was devoted towards developing and improving current CVD-based and chemical exfoliation based methods for synthesizing high quality graphene films. Specifically, in the CVD based procedure for growing graphene on copper, the effect of surface pretreatment of copper was investigated and the quality of graphene grown using two different pretreatment procedures was compared and analyzed. In particular, graphene grown on electropolished copper (EP-Cu) was analyzed with respect to its surface morphology, surface roughness and thickness, and compared with graphene grown on as cold-rolled acetic acid cleaned copper (AA-Cu). It was shown that electropolishing of the Cu substrates prior to graphene growth greatly enhanced the ability to obtain flat, uniform, predominantly single layer graphene surface coverage on copper. The reported surface roughness of the graphene on EP-Cu was found to be much lower than for previously reported systems, suggesting that the electropolishing procedure adopted in this work has great promise as a pretreatment step for Cu substrates used in CVD growth of graphene. Obtaining graphene from colloidal suspensions of graphitic systems was also examined. In this work, an acid (H₂SO₄ + HNO₃) treatment process for intercalating natural graphite flakes was examined and the ability to reversibly intercalate and deintercalate acid ions within graphitic galleries was investigated. More importantly, a rapid-thermal expansion (RTP) processing was developed to thermally expand the acid-treated graphite, followed by exfoliation of predominantly bilayer graphene as well as few layer graphene flakes in an organic solvent (N, N-Dimethylformamide - DMF). The developed method was shown to provide bilayer and few layer graphene flakes in a reliable fashion. Fullerene is another carbon nanostructure that has garnered attention due to unique structure and chemical properties. Recently, there has been increased focus towards harnessing the properties of fullerenes by synthesizing fullerene self-assemblies in the form of extended rods, tubes and more complex shapes. Current methods to synthesize these self-assemblies are either cumbersome, time consuming or expensive. In this context, an alternate, straightforward dip-coating procedure technique to self-assemble equal-sized, faceted, polymerized fullerene nanorods on graphene-based substrates in a rapid fashion was developed. By suitably modifying the kinetics of self-assembly, the ability to reliably control the spatial distribution, size, shape, morphology and chemistry of fullerene nanorods was achieved.
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7

Nagelli, Enoch A. "CONTROLLED FUNCTIONALIZATION AND ASSEMBLY OF GRAPHENE NANOSTRUCTURES FOR SENSING AND ENERGY STORAGE." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1402278821.

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8

CURCIO, DAVIDE. "Growth and Properties of Graphene-Based Materials." Doctoral thesis, Università degli Studi di Trieste, 2017. http://hdl.handle.net/11368/2908114.

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Анотація:
In this thesis, I have focused on graphene-based nanostructures as a versatile means of manipulating the electronic properties of graphene, while working with objects perfect at the atomic level. This is the nanotechnological approach, where we exploit the infinite possibilities of making small things with new materials. For these reasons, I concentrated my research efforts to graphene-based nanomaterials, because graphene is one of the most exciting materials we have to date, and because manipulation of surfaces at the nano-level is what allows us to make new materials today. In this thesis, I will show how we have created and studied new graphene-based nanostructures by employing cutting-edge surface science techniques. Most of the experimental data we have acquired has been given a new light by powerful Density Functional Theory calculations, that allow for an approach where hardly accessible data (experimentally) becomes indirectly known through numerical calculations, while providing valuable feedback for further aimed calculations. I will show how we have undertaken a route that takes us from a detailed study of how carbon monomers, the building blocks of graphene, come to exist on an Ir(1 1 1) surface after ethylene dissociation. Next, simple nanostructures have been ex- ploited, so that the properties of a preexisting graphene layer are manipulated by intercalating different metals between graphene and the substrate. Then I will discuss an experiment where graphene was grown on a highly anisotropic substrate, Ru(1 0 1 0), which proved to be an extremely rich system, giving rise to several self-assembled graphene nanostructures, including nanoribbons and one-dimensional quasi free-standing graphene waves. Then, we will progress to what are commonly perceived as being proper graphene-based nanostructures. We have, in fact, managed to create size selected graphene nanodomes on Ir(1 1 1) using coronene as a precursor, and we have understood many details of the dynamics in the formation of these carbon-based nanostructures, discovering that in certain steps of the reaction they lift from the surface and rotate, before settling in the definitive adsorption position. Furthermore, while performing similar experiments on pentacene (a semiconducting molecule, used the fabrication of molecular FETs) on Ir(1 1 1), we have discovered that the molecules exhibit a reversible dehydrogenation, allowing for a switch between semiconducting molecules and minimalistic graphene nanoribbons, only one aromatic ring wide. Finally, a size-selected nanocluster source system will be described. In parallel with my research activity, I have been profoundly involved in the commissioning of such a machine that is currently capable of producing size selected nanoclusters.
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9

Wu, Yimin A. "Towards large area single crystalline two dimensional atomic crystals for nanotechnology applications." Thesis, University of Oxford, 2012. http://ora.ox.ac.uk/objects/uuid:bdb827e5-f3fd-4806-8085-0206e67c7144.

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Анотація:
Nanomaterials have attracted great interest due to the unique physical properties and great potential in the applications of nanoscale devices. Two dimensional atomic crystals, which are atomic thickness, especially graphene, have triggered the gold rush recently due to the fascinating high mobility at room temperature for future electronics. The crystal structure of nanomaterials will have great influence on their physical properties. Thus, this thesis is focused on developing the methods to control the crystal structure of nanomaterials, namely quantum dots as semiconductor, boron nitride (BN) as insulator, graphene as semimetal, with low cost for their applications in photonics, structural support and electronics. In this thesis, firstly, Mn doped ZnSe quantum dots have been synthesized using colloidal synthesis. The shape control of Mn doped ZnSe quantum dots has been achieved from branched to spherical by switching the injection temperature from kinetics to thermodynamics region. Injection rates have been found to have effect on controlling the crystal phase from zinc blende to wurtzite. The structural-property relationship has been investigated. It is found that the spherical wurtzite Mn doped ZnSe quantum dots have the highest quantum yield comparing with other shape or crystal phase of the dots. Then, the Mn doped ZnSe quantum dots were deposited onto the BN sheets, which were micron-sized and fabricated by chemical exfoliation, for high resolution imaging. It is the first demonstration of utilizing ultrathin carbon free 2D atomic crystal as support for high resolution imaging. Phase contrast images reveal moiré interference patterns between nanocrystals and BN substrate that are used to determine the relative orientation of the nanocrystals with respect to the BN sheets and interference lattice planes using a newly developed equation method. Double diffraction is observed and has been analyzed using a vector method. As only a few microns sized 2D atomic crystal, like BN, can be fabricated by the chemical exfoliation. Chemical vapour deposition (CVD) is as used as an alternative to fabricate large area graphene. The mechanism and growth dynamics of graphene domains have been investigated using Cu catalyzed atmospheric pressure CVD. Rectangular few layer graphene domains were synthesized for the first time. It only grows on the Cu grains with (111) orientation due to the interplay between atomic structure of Cu lattice and graphene domains. Hexagonal graphene domains can form on nearly all non-(111) Cu surfaces. The few layer hexagonal single crystal graphene domains were aligned in their crystallographic orientation over millimetre scale. In order to improve the alignment and reduce the layer of graphene domains, a novel method is invented to perform the CVD reaction above the melting point of copper (1090 ºC) and using molybdenum or tungsten to prevent the balling of the copper from dewetting. By controlling the amount of hydrogen during the growth, individual single crystal domains of monolayer over 200 µm are produced determined by electron diffraction mapping. Raman mapping shows the monolayer nature of graphene grown by this method. This graphene exhibits a linear dispersion relationship and no sign of doping. The large scale alignment of monolayer hexagonal graphene domains with epitaxial relationship on Cu is the key to get wafer-sized single crystal monolayer graphene films. This paves the way for industry scale production of 2D single crystal graphene.
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10

Luo, Qinmo. "Interfacial-Active Graphene Oxide-based Materials for Ionic Liquid Encapsulation." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1575900447161884.

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Книги з теми "Materials Chemistry - Graphene Nanostructure"

1

Enoki, Toshiaki, C. N. R. Rao, and Swapan K. Pati. Graphene and its fascinating attributes. New Jersey: World Scientific, 2011.

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2

Yamada Conference (57th 2001 Tsukuba, Japan). Yamada Conference LVII: Atomic-scale surface designing for functional low-dimensional materials : AIST, Tsukuba, Japan, 14-16 November 2001. Amsterdam: Elsevier, 2002.

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3

1948-, Lal M., ed. Structure and dynamics of materials in the mesoscopic domain: Proceedings of the Fourth Royal Society-Unilever Indo-UK Forum in Materials Science and Engineering. London: Imperial College Press, 1999.

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4

NATO Advanced Study Institute on New Frontiers in Metathesis Chemistry from Nanostructure Design to Sustainable Technologies for Synthesis of Advanced Materials (2006 Antalya, Turkey). Metathesis chemistry: From nanostructure design to synthesis of advanced materials : proceedings of the NATO Advanced Study Institute on New Frontiers in Technologies for Synthesis of Advanced Materials, Antalya, Turkey, 4-16 September 2006. Dordrecht: Springer, 2007.

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5

Zeinolebadi, Ahmad. In-situ Small-Angle X-ray Scattering Investigation of Transient Nanostructure of Multi-phase Polymer Materials Under Mechanical Deformation. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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6

Ultrafast spectroscopy of semiconductors and semiconductor nanostructures. Berlin: Springer, 1996.

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7

Ali, Nasar, Mahmood Aliofkhazraei, William I. Milne, Cengiz S. Ozkan, and Stanislaw Mitura. Graphene Science Handbook: Nanostructure and Atomic Arrangement. Taylor & Francis Group, 2016.

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8

Physics and Chemistry of Graphene. Taylor & Francis Group, 2013.

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9

Physics and Chemistry of Graphene: Graphene to Nanographene. Taylor & Francis Group, 2019.

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10

Enoki, Toshiaki, and Tsuneya Ando. Physics and Chemistry of Graphene: Graphene to Nanographene. Jenny Stanford Publishing, 2019.

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Частини книг з теми "Materials Chemistry - Graphene Nanostructure"

1

Li, Fengyu, and Zhongfang Chen. "Graphene-Based Materials as Nanocatalysts." In Graphene Chemistry, 347–69. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118691281.ch15.

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2

Ikram, Muhammad, Ali Raza, and Salamat Ali. "Composition and Materials Chemistry." In Nanostructure Science and Technology, 31–63. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96021-6_3.

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3

Zhang, Wenhua, and Zhenyu Li. "Cutting Graphitic Materials: A Promising Way to Prepare Graphene Nanoribbons." In Graphene Chemistry, 79–99. Chichester, UK: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118691281.ch5.

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4

Nakato, Teruyuki, Jun Kawamata, and Shinsuke Takagi. "Materials Chemistry of Inorganic Nanosheets—Overview and History." In Nanostructure Science and Technology, 3–31. Tokyo: Springer Japan, 2017. http://dx.doi.org/10.1007/978-4-431-56496-6_1.

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5

Mogharabi, Mehdi, and Mohammad Ali Faramarzi. "Graphene-Based Polymer Nanocomposites: Chemistry and Applications." In Advanced Structured Materials, 209–37. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2473-0_7.

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6

Torrens, Francisco, and Gloria Castellano. "Magnetism, Polyoxometalates, Layered Materials, and Graphene." In Green Chemistry and Green Engineering, 123–34. Includes bibliographical references and index.: Apple Academic Press, 2020. http://dx.doi.org/10.1201/9781003057895-6.

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7

Lu, An-Hui, Guang-Ping Hao, Qiang Sun, Xiang-Qian Zhang, and Wen-Cui Li. "Chemical Synthesis of Carbon Materials with Intriguing Nanostructure and Morphology." In Chemical Synthesis and Applications of Graphene and Carbon Materials, 115–57. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2016. http://dx.doi.org/10.1002/9783527648160.ch7.

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8

Yu. Sementsov, I., G. P. Prikhodko, S. L. Revo, A. V. Melezhyk, M. L. Pyatkovskiy, and V. V. Yanchenko. "Synthesis and Structural Peculiarities of the Exfoliated Graphite Modified by Carbon Nanostructures." In Hydrogen Materials Science and Chemistry of Carbon Nanomaterials, 405–14. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-2669-2_47.

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9

Dmytrenko, O. P., M. P. Kulish, L. V. Poperenko, I. Yu. Prylutskyy, E. M. Shpilevskyy, I. V. Yurgelevich, M. Hietschold, F. S. Schulze, J. Ulanski, and P. Scharff. "Nanostructure and Electronic Spectra of Cu-C60 Films." In Hydrogen Materials Science and Chemistry of Carbon Nanomaterials, 333–38. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-2669-2_37.

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10

Yamada, Hiroko. "Nanostructure Control of Crystalline Organic Thin Films by Solution Processes." In Physics and Chemistry of Carbon-Based Materials, 253–92. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3417-7_9.

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Тези доповідей конференцій з теми "Materials Chemistry - Graphene Nanostructure"

1

Trenikhin, M. V., and V. A. Drozdov. "Nanostructure analysis of the graphene layers of carbon black." In 21ST CENTURY: CHEMISTRY TO LIFE. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5122909.

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2

Ghadiri, Yashar, and Mohammad Najafi. "Giant Kerr nonlinearity in a quantized four-level graphene nanostructure." In Novel Optical Materials and Applications. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/noma.2016.notu3d.6.

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3

Manhas, Sandeep S., Ginni, Sagar Bisoyi, Aman Deep Acharya, Shweta Moghe, and Vijay Kumar Hinge. "Preparation and characterization of vanadium oxide nanostructure." In NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0061223.

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4

Tarakina, Nadezda. "Nanostructure and chemistry of carbon nitride materials for energy applications." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.1291.

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5

Avila, Antonio F., Camila Goncalves, and Glaucio Carley. "Hybrid Carbon/Epoxy Composites with Interlocking Properties: The Graphene Nanostructure Morphology Investigation." In 55th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2014. http://dx.doi.org/10.2514/6.2014-0468.

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6

Aziz, T. H. T., M. M. Salleh, A. A. Umar, and M. Y. A. Rahman. "OLED enhancement by insertion of graphene oxide spider like nanostructure as hole buffer layer." In Optical Nanostructures and Advanced Materials for Photovoltaics. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/pv.2015.jtu5a.5.

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7

Chinnappagoudra, R. F., M. D. Kamatagi, and N. R. Patil. "Thermoelectric properties of bilayer graphene: Effect of screening." In NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0061104.

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8

Lan, Yazhu, Pengwan Chen, Chunxiao Xu, and Jianjun Liu. "Shock-wave synthesis of alveolate graphene." In 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/emcpe-16.2016.76.

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9

Qasem, Jawaher, and Baliram G. Lone. "DFT study of thymine adsorption on Zr doped graphene." In NATIONAL CONFERENCE ON PHYSICS AND CHEMISTRY OF MATERIALS: NCPCM2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0061394.

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10

He, D. X., W. D. Xue, and R. Zhao. "Aqueous Solution of Ammonium Persulfate Assisted Electrochemical Exfoliation of Graphite into Graphene." In The International Workshop on Materials, Chemistry and Engineering. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0007443006580662.

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