Academic literature on the topic 'Nanodiamonds – Synthesis'

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Journal articles on the topic "Nanodiamonds – Synthesis"

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Tian, Fei, Hong Yang, Yong Guang Zhao, and Hong Mei Cao. "Size Effect on the Transformation from Graphite to Nanodiamonds." Materials Science Forum 787 (April 2014): 412–18. http://dx.doi.org/10.4028/www.scientific.net/msf.787.412.

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The synthesis of nanodiamonds by pulsed-laser ablation in liquid (PLAL) is an attractive research field in developing well-dispersed fluorescent nanodiamonds for bioimaging and life science. However, nanodiamonds are quite different from their widely pursued carbon allotropes both in synthesis conditions and physical properties. It is a great challenge to synthesize metastable phase nanodiamonds that prefer high temperature and high pressure. Despite the progress in the synthesis of nanodiamond by pulsed-laser ablation of graphite target using different laser power densities under room conditions, the transformation from graphite to nanodiamonds are not yet well explained. In order to have a better understanding to the formation of metastable nanodiamonds upon PLAL, the formation of nanodiamond has been elucidated from both the aspects of thermodynamics and kinetics. Due to low laser intensity and long wavelength, synthesis of nanodiamonds is the result of high cooling velocity of high-pressure and high-temperature carbon vapor condensation formed under laser vaporization of graphite particles. When diamond nuclei grow into the right size, they cannot increase and the graphite nucleation begins to form and grow on the diamond at given conditions due to long pulse width for ms-pulsed laser. In fact, the diamond particles enwrapped several layers of graphite have obtained. Moreover, the reasons related 3~6nm diamonds prepared by this new process and having narrow size distribution are also discussed.
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Gonçalves, Juliana P. L., Afnan Q. Shaikh, Manuela Reitzig, Daria A. Kovalenko, Jan Michael, René Beutner, Gianaurelio Cuniberti, Dieter Scharnweber, and Jörg Opitz. "Detonation nanodiamonds biofunctionalization and immobilization to titanium alloy surfaces as first steps towards medical application." Beilstein Journal of Organic Chemistry 10 (November 26, 2014): 2765–73. http://dx.doi.org/10.3762/bjoc.10.293.

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Due to their outstanding properties nanodiamonds are a promising nanoscale material in various applications such as microelectronics, polishing, optical monitoring, medicine and biotechnology. Beyond the typical diamond characteristics like extreme hardness or high thermal conductivity, they have additional benefits as intrinsic fluorescence due to lattice defects without photobleaching, obtained during the high pressure high temperature process. Further the carbon surface and its various functional groups in consequence of the synthesis, facilitate additional chemical and biological modification. In this work we present our recent results on chemical modification of the nanodiamond surface with phosphate groups and their electrochemically assisted immobilization on titanium-based materials to increase adhesion at biomaterial surfaces. The starting material is detonation nanodiamond, which exhibits a heterogeneous surface due to the functional groups resulting from the nitrogen-rich explosives and the subsequent purification steps after detonation synthesis. Nanodiamond surfaces are chemically homogenized before proceeding with further functionalization. Suspensions of resulting surface-modified nanodiamonds are applied to the titanium alloy surfaces and the nanodiamonds subsequently fixed by electrochemical immobilization. Titanium and its alloys have been widely used in bone and dental implants for being a metal that is biocompatible with body tissues and able to bind with adjacent bone during healing. In order to improve titanium material properties towards biomedical applications the authors aim to increase adhesion to bone material by incorporating nanodiamonds into the implant surface, namely the anodically grown titanium dioxide layer. Differently functionalized nanodiamonds are characterized by infrared spectroscopy and the modified titanium alloys surfaces by scanning and transmission electron microscopy. The process described shows an adsorption and immobilization of modified nanodiamonds on titanium; where aminosilanized nanodiamonds coupled with O-phosphorylethanolamine show a homogeneous interaction with the titanium substrate.
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Vityaz, P. A., V. T. Senyut, M. L. Kheifets, A. G. Kolmakov, and S. A. Klimenko. "Synthesis of Superhard Materials Based on Sphalerite Boron Nitride Using Carbon Nanoparticles as a Phase Conversion Catalyst." Advanced Materials & Technologies, no. 3(19) (2020): 008–17. http://dx.doi.org/10.17277/amt.2020.03.pp.008-017.

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Using modern ideas about the form of the phase diagram of boron nitride, the paper considers thermodynamic parameters and mechanisms of the synthesis of dense phases of boron nitride under equilibrium and nonequilibrium conditions. It has been verified that nanodiamonds, like fullerenes and carbon nanotubes, have catalytic properties and contribute to the solid-state conversion of graphite-like boron nitride to sphalerite modification at high pressures and temperatures. We propose a mechanism for the interaction of nanodiamond under high pressures with the surface of graphite-like boron nitride, which leads to a change in the type of electronic bond in its lattice from sp2 to sp3 with the formation of boron nitride with a wurtzite structure and its subsequent transformation into sphalerite boron nitride by the shear mechanism. The use of carbon-coated nanodiamonds resulted in an increase in the catalytically active centers of phase transformation in boron nitride in comparison with unmodified nanodiamonds, which was manifested in an increase in the content of sphalerite boron nitride in materials obtained under comparable technological synthesis conditions. Modified nanodiamonds also contribute to the intensification of the synthesis of superhard polycrystals as compared to uncoated nanodiamond additives, both due to the diffusion of carbon atoms along the grain boundaries of sphalerite boron nitride and due to the rearrangement of graphite microgroups into a diamond structure and sintering of the obtained diamond blocks with grains of sphalerite boron nitride. The process parameters of obtaining superhard polycrystals based on sphalerite boron nitride with the addition of detonation nanodiamond powders after chemical cleaning and surface modification with non-diamond forms of carbon were found.
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Popov, Vladimir. "Several Aspects of Application of Nanodiamonds as Reinforcements for Metal Matrix Composites." Applied Sciences 11, no. 10 (May 20, 2021): 4695. http://dx.doi.org/10.3390/app11104695.

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After detonation synthesis, primary nanodiamond particles are around 4–6 nm in size. However, they join into agglomerates with larger parameters and weak bonds between particles. The introduction of agglomerates into a metal matrix can lead to the weakness of composites. This paper demonstrates the possibility of obtaining a non-agglomerated distribution of nanodiamonds inside a metal matrix. The fabrication method was based on mechanical alloying to create additional stresses and deformations by phase transformations during treatment in a planetary mill. According to the findings, the starting temperature of the reaction between the non-agglomerated nanodiamonds and aluminium matrix reduces to 450 °C. Furthermore, the paper shows that existing methods (annealing for the transformation of a diamond structure into graphitic material and cleaning from this graphitic material) cannot reduce the sizes of nanodiamonds in the agglomerated state. Agglomerated nanodiamonds transform into carbon onions (graphitic material) during annealing in a vacuum in the following way: the nanodiamonds located in the surface layers of the agglomerate are the first to undergo the complete transformation followed by the transformation of nanoparticles in its deeper layers. In the intermediate state, the agglomerate has a graphitic surface layer and a core from nanodiamonds: cleaning from graphite cannot reduce nanodiamond particle size.
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Popov, Vladimir, Anna Borunova, Evgeny Shelekhov, Oksana Koplak, Elizaveta Dvoretskaya, Danila Matveev, Alexey Prosviryakov, Ekaterina Vershinina, and Vladimir Cheverikin. "Decrease in the Starting Temperature of the Reaction for Fabricating Carbides of Refractory Metals When Using Carbon Nanoparticles as Precursors." Inventions 7, no. 4 (December 12, 2022): 120. http://dx.doi.org/10.3390/inventions7040120.

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Metal matrix composites with a matrix of refractory metals (niobium, tungsten) and reinforcing nanodiamond particles were prepared for studying the possibility of decreasing the starting temperature of carbide synthesis. The size of primary nanodiamond particles was 4–6 nm, but they were combined in large-sized agglomerates. Mechanical alloying was used for producing the composites by crushing agglomerates and distributing nanodiamonds evenly in the metal matrix. The initial and fabricated materials were investigated by X-ray diffraction, differential scanning calorimetry, and transmission and scanning electron microscopy. Thermal processing leads to the reaction for carbide synthesis. Studies have found that the usage of carbon nanoparticles (nanodiamonds) as precursors for fabricating carbides of refractory metals leads to a dramatic decrease in the synthesis temperature in comparison with macro-precursors: lower than 200 °C for tungsten and lower than 350 °C for niobium.
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Ekimov, Evgeny, Andrey A. Shiryaev, Yuriy Grigoriev, Alexey Averin, Ekaterina Shagieva, Stepan Stehlik, and Mikhail Kondrin. "Size-Dependent Thermal Stability and Optical Properties of Ultra-Small Nanodiamonds Synthesized under High Pressure." Nanomaterials 12, no. 3 (January 22, 2022): 351. http://dx.doi.org/10.3390/nano12030351.

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Diamond properties down to the quantum-size region are still poorly understood. High-pressure high-temperature (HPHT) synthesis from chloroadamantane molecules allows precise control of nanodiamond size. Thermal stability and optical properties of nanodiamonds with sizes spanning range from <1 to 8 nm are investigated. It is shown that the existing hypothesis about enhanced thermal stability of nanodiamonds smaller than 2 nm is incorrect. The most striking feature in IR absorption of these samples is the appearance of an enhanced transmission band near the diamond Raman mode (1332 cm−1). Following the previously proposed explanation, we attribute this phenomenon to the Fano effect caused by resonance of the diamond Raman mode with continuum of conductive surface states. We assume that these surface states may be formed by reconstruction of broken bonds on the nanodiamond surfaces. This effect is also responsible for the observed asymmetry of Raman scattering peak. The mechanism of nanodiamond formation in HPHT synthesis is proposed, explaining peculiarities of their structure and properties.
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Dolmatov, Valerii Yu, Alexander I. Shames, Eiji Ōsawa, Asko Vehanen, Vesa Myllymäki, Alexander O. Dorokhov, Valerii A. Marchukov, Anatoly S. Kozlov, Sergey Yu Naryzhny, and Anastasia Z. Smirnova. "Detonation nanodiamonds: from synthesis theory to application practice." Image Journal of Advanced Materials and Technologies 6, no. 1 (April 21, 2021): 54–80. http://dx.doi.org/10.17277/jamt.2021.01.pp.054-080.

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The review is devoted to the current state of research and advances in the production and study of the properties of detonation nanodiamonds (DND), their application in technology and medicine. New data on the theory and practice of DND synthesis for the last 1–5 years are considered and systematized. It is shown that the zone of chemical reactions (ZCR) during the blust of explosive materials (EM) is decisive for the fractal pre-diamond structure formation, the final region of the nanodiamonds (1/3–3/4 of the diameter of the explosive charge) formation is determined. The possibility of predicting the DND yield and the influence of parameters on the synthesis process of nanodiamonds from individual EMs of binary and ternary compositions is shown, their optimal formulations are determined. The optimal ZCR width and the existence time of chemical reactions have been identified. The dependence of the DND yield on the nitrogen content in the EM was shown. The most effective method of DND purification and the possibility of obtaining graphite-diamond compositions of a given formulation are presented. The most informative indicators of nanodiamonds characterization are given. The magnetic properties of nanodiamonds are considered and the identity of the properties of DNDs from different EMs is shown. The characteristics of new compositions based on DND are indicated: electrochemical coatings (gold and chromium-diamond), thermal pastes, diamond-containing polymer filaments for a 3D printer, fuel compositions, enterosorbents, compatible with biosystems of the nanodiamond-drug composition.
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Bogdanov, Kirill V., Mikhail A. Baranov, Nikolay A. Feoktistov, Ilya E. Kaliya, Valery G. Golubev, Sergey A. Grudinkin, and Alexander V. Baranov. "Duo Emission of CVD Nanodiamonds Doped by SiV and GeV Color Centers: Effects of Growth Conditions." Materials 15, no. 10 (May 18, 2022): 3589. http://dx.doi.org/10.3390/ma15103589.

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The investigation of the hot filament chemical vapor deposition nanodiamonds with simultaneously embedded luminescent GeV− and SiV− color centers from solid sources showed that both the absolute and relative intensities of their zero-phonon lines (at 602 and 738 nm) depend on nanodiamond growth conditions (a methane concentration in the CH4/H2 gas mixture, growth temperature, and time). It is shown that a controlled choice of parameters of hot filament chemical vapor deposition synthesis makes it possible to select the optimal synthesis conditions for tailoring bicolor fluorescence nanodiamond labels for imaging biological systems.
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Manuella, F. C. "Can nanodiamonds grow in serpentinite-hosted hydrothermal systems? A theoretical modelling study." Mineralogical Magazine 77, no. 8 (December 2013): 3163–74. http://dx.doi.org/10.1180/minmag.2013.077.8.10.

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AbstractNanodiamonds can be synthesized hydrothermally in the laboratory by using a C-O-H fluid in the graphite stability field, in which the graphite/nanodiamond transition depends on the crystal size as a function of temperature. In nature, the hydrothermal circulation of seawater in serpentinites plays an important role in the carbon speciation in the oceanic crust and exposed mantle, in which hydrocarbons (mainly CH4) of abiogenic origin (via Fischer-Tropsch-type reaction) and occasionally graphite particles are detected. Can nanodiamonds nucleate and grow in serpentinite-hosted hydrothermal systems? To answer this question, a theoretical modelling study which compares the physico-chemical conditions in hydrothermal synthesis with those observed in modern and fossil serpentinite-hosted hydrothermal systems is proposed. Nanodiamonds are predicted to precipitate from a C-O-H fluid, consisting of CH4-CO2-H2O at 350 – 400°C andP<0.2 GPa near the FMQ buffer (Fayalite-Magnetite-Quartz), which are conditions compatible with those existing in serpentinite-hosted hydrothermal systems. In these environments, carbon-supersaturated fluids can be derived from water consumption (serpentine formation) under low water/rock ratios, which may promote the growth of nanodiamonds. This theoretical approach sheds light on the intriguing problem of carbon speciation in abyssal-type hydrothermal systems, suggesting that serpentinites may host nanodiamond deposits, even though none have been found yet.
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Liu, Meihua, Dongai Wang, Huaiwen Wang, Yan Shi, Bing Liu, Feihui Li, Yunlan Gong, and Wengang Zhang. "Study on Optimization Technology to Strengthen Ni-Based Composite Coating Electroplate Containing Nanodiamond." Materials 12, no. 10 (May 21, 2019): 1654. http://dx.doi.org/10.3390/ma12101654.

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Ni-based composite coating containing nanodiamonds was deposited on the substrate of Q235A low-carbon steel in a traditional Watts solution, without any additive. The nanodiamond grains prepared by detonation synthesis were measured by Transmission electron microscope (TEM) and X-ray diffraction (XRD). The electrochemical behavior of Ni2+ ion in the composite bath including nanodiamonds was studied by linear sweep voltammetry experiments, and the morphology, elastic modulus, and hardness of Ni-based composite coating were characterized using Scanning Electron microscope (SEM) and the nano-indenter XP tester. Effects of the nanodiamond concentration in the bath, stirring speed, and the electroplate mode on the properties of Ni-based composite coating were investigated. The results show that the reduction of Ni2+ ion in the electroplating process increased initially, and then decreased as the nanodiamond concentration in the bath increased from 4 g/L to 16 g/L, irrespective of whether direct current (DC), single-pulse, or double-pulse electroplating mode was used. The highest over-potential could be obtained when the nanodiamond concentration in the bath was 8 g/L. Moreover, the hardness and elastic modulus of the composite coating prepared by the DC electroplating mode were 4.68 and 194.30 GPa, respectively. By using the same plating parameters, the coating prepared by the double-pulse electroplating mode showed better properties, with hardness and elastic modulus values of 5.22 and 197.38 GPa, respectively.
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Dissertations / Theses on the topic "Nanodiamonds – Synthesis"

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Basso, Luca. "Laser-synthesis and optical functionalization of NV-fluorescent nanodiamonds for quantum sensing applications." Doctoral thesis, Università degli studi di Trento, 2020. http://hdl.handle.net/11572/250439.

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The absence of a cheap and easily scalable synthesis technique for nitrogen-vacancy (NV) centers enriched nanodiamonds (NDs) is a critical factor for the development of devices based on this very peculiar nanoparticle. Indeed, the combination between the unique NV fluorescence properties and NDs characteristics allow to obtain a tool having quantum sensing capabilities, with nanometric spatial resolution, which is able to operate in a wide range of temperature, pressures and in harsh chemical conditions. NVenriched NDs applications in nanothermometry, nanomagnetometry and in bio-imaging have already been reported. However, most of the standard fluorescent NDs production techniques present common drawbacks: poor control in NDs size distribution and in nitrogen concentration, as well as the need of post-synthesis process to clean the NDs surface from impurities and to increase the NV density. In this thesis, an alternative method for fluorescent NDs synthesis based on pulsed laser ablation (PLA) of graphite is demonstrated. After the introductory chapters on NV-centers physics and NDs properties (Chapter 2 and 3), the demonstration that PLA is a viable route for synthesis of NDs is given in Chapter 4. In particular, PLA of graphite and of diamond-like carbon is performed in water. Here, a thermodynamic model taking into account the peculiar physical processes occurring during PLA is developed to explain NDs formation. Then, synthesis of NV-enriched NDs is demonstrated through PLA of graphite in a nitrogen atmosphere (Chapter 5) and in liquid nitrogen (Chapter 6). In both chapters, the thermodynamic model is adapted to explain diamond phase formation in a gaseous environment and in a cryogenic liquid. Furthermore, NV centers optical properties are fully characterized with optically detected magnetic resonance (ODMR) spectroscopy. Finally, in Chapter 7, fluorescent NDs are produced by laser ablation of N-doped graphite in water. This particular target is then used for a quantitative comparison between the other fluorescent NDs laser-synthesis, with the aim of establishing in which condition the highest NV-center formation efficiency is achieved.
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Koso, Tetyana V. [Verfasser]. "Unsaturated nanodiamonds : synthesis and functionalization of coupled diamondoids as a direct route to nanometer-sized building blocks / Tetyana V. Koso." Gießen : Universitätsbibliothek, 2013. http://d-nb.info/1065319789/34.

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Gür, Fatih Nadi. "Plasmonic waveguides self-assembled on DNA origami templates: from synthesis to near-field characterizations." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-235762.

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Manipulating light by controlling surface plasmons on metals is being discussed as a means for bridging the size gap between micrometer-sized photonic circuits and nanometer-sized integrated electronics. Plasmonic waveguides based on metal nanoparticles are of particular interest for circumventing the diffraction limit, thereby enabling high-speed communication over short-range distances in miniaturized micro-components. However, scalable, inexpensive fine-tuning of particle assemblies remains a challenge and near-field probing is required to reveal plasmonic interactions. In this thesis, self-assembled waveguides should be produced on DNA scaffolds. DNA origami is an extremely versatile and robust self-assembly method which allows scalable production of nanostructures with a fine control of assemblies at the nanoscale. To form the plasmonic waveguides, six-helix bundle DNA origami nanotubes are used as templates for attachment of highly monodisperse and monocrystalline gold nanoparticles with an inter-particle distance of 1-2 nm. In the first part of this thesis, the effects of parameters which are involved in assembly reactions are systematically investigated. The assembly yield and binding occupancy of the gold nanoparticles are determined by an automated, high-throughput image analysis of electron micrographs of the formed complexes. As a result, unprecedented binding site occupancy and assembly yield are achieved with the optimized synthesis protocol. In addition, waveguides with different sizes of gold nanoparticles and different inter-particle distances, quantum dots attachments to the waveguides and multimerization of the waveguides are successfully realized. In the second part of this thesis, direct observation of energy transport through a self-assembled waveguide towards a fluorescent nanodiamond is demonstrated. High-resolution, near-field mapping of the waveguides are studied by electron energy loss spectroscopy and cathodoluminescence imaging spectroscopy. The experimental and simulation results reveal that energy propagation through the waveguides is enabled by coupled surface plasmon modes. These surface plasmon modes are probed at high spatial and spectral resolutions. The scalable self-assembly approach presented here will enable the construction of complex, sub diffraction plasmonic devices for applications in high-speed optical data transmission, quantum information technology, and sensing
Die Manipulation des Lichts durch die Kontrolle von Oberflächenplasmonen auf metallischen Oberflächen und Nanopartikeln gilt als vielversprechende Methode zur Überbrückung der Größen-Lücke zwischen Mikrometer-großen photonischen und nanometer-großen elektronischen Schaltkreisen. Plasmonische Wellenleiter basierend auf metallischen Nanopartikeln sind vom besonderen Interesse, da sie die Umgehung des Beugungslimits und somit eine Hochgeschwindigkeitskommunikation über kurze Distanzen in immer kleiner werdenden Schaltkreisen ermöglichen könnten. Allerdings ist die skalierbare und kostengünstige Anordnung von Partikeln eine große Herausforderung und es werden Nahfelduntersuchungen benötigt um plasmonische Interaktionen detektieren zu können. Das Ziel dieser Arbeit ist die Selbstassemblierung von multi-partikel Wellenleitern auf DNA Gerüsten. Die Verwendung von DNA-Origami bietet eine äußerst vielseitige Plattform zur skalierbaren Herstellung von Nanostrukturen mittels Selbstassemblierung und ermöglicht eine präzise Kontrolle der Anordnungen im Nanobereich. Für den Aufbau der plasmonischen Wellenleiter werden DNA-Origami Nanoröhren, bestehend aus sechs Helices als Templat für die Anbindung von monodispersen und monokristallinen Goldnanopartikeln mit einem interpartikulären Abstand von 1-2 nm verwendet. Im ersten Abschnitt dieser Arbeit werden die beeinflussenden Faktoren dieser Assemblierungsreaktion systematisch untersucht. Die Ausbeute der assemblierten Strukturen und die Besetzung der Bindungsstellen werden durch eine automatisierte und effiziente Bildanalyse von Elektronenmikroskopieaufnahmen ausgewertet. Durch die Entwicklung eines optimierten Syntheseprotokolls werden bisher unerreichte Assemblierungsausbeuten ermöglicht. Zusätzlich erfolgen die experimentelle Realisierung von Strukturen mit verschieden großen Goldnanopartikeln und unterschiedlichen interpartikulären Abständen, sowie die Anbindung von Quantenpunkten an die Wellenleiter und eine Verknüpfung der assemblierten Strukturen. Der zweite Abschnitt dieser Dissertation befasst sich mit der Untersuchung des Energietransports in selbstassemblierten Wellenleitern über einen fluoreszierenden Nanodiamanten. Dazu erfolgen hochaufgelöste Nahfeldmessungen der Wellenleiter mittels Elektronenenergieverlustspektroskopie und Kathodolumineszenz-mikroskopie. Die experimentellen Ergebnisse und zusätzlich durchgeführte Simulationen bestätigen eine durch gekoppelte Oberflächenplasmonenmoden induzierte Weitergabe der Energie innerhalb des Wellenleiters. Diese Oberflächenplasmonenmoden werden bei hoher räumlicher und spektraler Auflösung untersucht. Das hier umgesetzte Konzept der Selbstassemblierung wird den Aufbau komplexer plasmonischer Geräte für Anwendungen im Bereich der optischen Hochgeschwindigkeitsdatenübertragung, der Quanteninformations-technolgie und der Sensorik ermöglichen
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Sneed, Brian D. "Synthesis and characterization of Al-Nanodiamond composite powders by high-energy ball milling." Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/10698.

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High-energy ball milling was studied for the ex situ strengthening of aluminum (Al) with nanodiamond (ND). Al-ND metal matrix composite powders with 5 wt% and 10 wt% nanodiamond were synthesized by high-energy ball milling of the blended component powders. Stearic acid was used as a process control agent to minimize agglomeration of the powders upon milling. A uniform distribution of the ND reinforcement was successfully obtained after milling the powders for a period of ten hours with a ball-to-powder ratio of 30:1 in a SPEX 8000M ball mill. Composition and properties of the Al-ND composite was studied using energy dispersive spectrometry (EDS) mapping, scanning electron microscopy (SEM), X-ray diffraction (XRD), optical microscopy, and nanoindentation techniques.
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Hung, Chuan-Hsi. "Synthesis and Characterization of Carbonized Poly (Divinylbenzene) Microspheres for Carbon/Nanodiamond/Polymer-Based Core-Shell Materials and Applications of This Mixed-Mode Phase to High-Performance Liquid Chromatography." BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/5497.

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This work focuses on improving the quality of carbon-based core-shell materials for high performance liquid chromatography (HPLC) via the characterization of the core materials, and also the development of chromatographic methods (separations) for them. In the early part of this work, I applied organic synthesis to make uniform, spherical poly(divinylbenzene) (PDVB) microspheres, and then carbonized them to prepare carbon core materials for core-shell particle synthesis. Here, I studied in detail the surface and material properties of these particles with multiple instruments, which allowed me to describe the physical and chemical changes that took place during each treatment. The uniform, spherical carbon core materials greatly improved the efficiency of the previously developed carbon-based core-shell HPLC columns from ca. 70,000 plates per meter (N/m) to ca. 110,000 N/m for various alkyl benzenes. Later, I focused on generating application notes to showcase these mixed-mode HPLC columns. Here, liquid chromatography mass spectrometry (LC-MS) was used for the detection of analytes that lack chromophores for UV detection. In this dissertation, Chapter 1 contains a historical background and theory of HPLC along with a review of the use of carbon-based core-shell materials for elevated pH and temperature applications. Chapter 2 describes the improvement of the efficiency of carbon-based materials for HPLC using carbonized PDVB microspheres as the carbon core material. Chapter 3 is a study on the characterization of carbonized PDVB microspheres with multiple instruments. Chapter 4 describes the separation of cannabinoids using three types of carbon-based mixed-mode HPLC columns. Chapter 5 consists of (i) guidelines for the retention mechanism of the core-shell particles that have been commercialized for chromatography by Diamond Analytics, a US Synthetic Company in Orem, Utah, and (ii) application notes for these columns. Finally, Chapter 6 discusses possible future work.
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"AMINO ACID FUNCTIONALIZED NANODIAMONDS AS GENE DELIVERY VECTORS: SYNTHESIS, PHYSICOCHEMICAL CHARACTERIZATION AND CELLULAR INTERACTION STUDIES." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-09-2219.

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Nanodiamonds (NDs) are the most biocompatible member of the carbon nanofamily which are widely researched for diagnostic and therapeutic applications. Unlike other carbon nanomaterials, the surface of NDs is innately reactive, hence capable of conjugating various chemical moieties for targeted actions. This work focuses on utilizing the surface reactivity of NDs for gene therapeutics and addressing the challenges associated with its application in the biological environment. Pristine carboxylated NDs were functionalized with basic amino acids (lysine and lysyl-histidine) through covalent conjugation via a three carbon chain linker. Amino acid functionalized NDs were characterized by infrared spectroscopy, thermogravimetry and size and zeta potential measurements. Lysine conjugation was evident through a marked change in the zeta potential of ND dispersion from negative to a high positive value (-54.6 mV to +26.3 mV). The thermogram of lysine functionalized NDs (Lys-NDs) revealed a significant weight loss from 150ᵒC to 700ᵒC confirming the functionalization through loss of amino acid conjugates from the surface and total loading was calculated as 1.97 mmols/g. Lys-NDs also showed optimum binding with pDNA and siRNA at weight ratios of 1:1 and 1:20 (pDNA/siRNA:ND), respectively. Functionalization of NDs with lysine contributed to limiting aggregation and enhancing the colloidal stability of ND dispersions in biological milieu. The aqueous dispersion of lys-NDs showed minimum sedimentation and remained stable over a period of 25 days. Average sizes under 100 nm and zeta potentials higher than +20 mV indicate a preservation of the cationic surface throughout the testing period. Moreover, size distributions and zeta potentials changed significantly upon incubation of lys-NDs with blood serum suggesting an interaction with biomolecules, mainly proteins and a possible formation of a protein corona. Cellular internalization of bare lys-NDs and their diamoplexes (i.e. complexes of NDs with nucleic acids) was assessed through scanning transmission X-ray microscopy and flow cytometry. Functional efficiency of lysine NDs was determined by flow cytometry monitoring the GFP knockdown through anti-GFP siRNA delivery. Results reveal a promising GFP knockdown of ~17% upon treating the cells with NDs/siRNA diamoplexes at a ratio of 20:1. Subsequent analyses regarding the effect of NDs to prevent cellular proliferation and to cause cellular apoptosis confirmed that they are innately biocompatible at a wide range of concentrations. Unlike lysine NDs, lysyl-histidine functionalization was limited and the surface loading of this conjugate on NDs was very low. Therefore, they were unable to bind pDNA and siRNA even at high weight ratios and hence demand design modifications. Overall this work demonstrates a novel approach of functionalizing NDs with basic amino acids capable of enhancing colloidal stability and delivering of therapeutic genes into mammalian cells. It represents an important step in the development of safe and efficient gene therapy for inherited and acquired diseases.
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JUNE-I, WU, and 吳俊毅. "Synthesis of peptide-conjugated nanodiamonds for developing anticancer drugs and diagnostics." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/nb5ap4.

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碩士
東海大學
化學系
105
The rapid development of nanotechnology , let it have a chance applied to Biology and Medicine. Recently a great potential of nanodiamond (ND) particles as a multimodal imaging/therapy platform has been demonstrated. Nanodiamonds (NDs) play a key role with their excellent physicochemical properties, including high biocompatibility, physical adsorption and photostabilizing activity. To combined with Biomedical Science development of drug delivery systems may be to facilitate the permeation of drugs provide the best use in medical care. In this study, the use of colon cancer and its EGFR mechanism as the goal, the nanodiamonds as a drug carrier. Here be divided into two parts, synthetic antibody-conjugated nanodiamonds and peptide-conjugated nanodiamonds. Use BCA Protein assay、MALDI-TOF MS and FTIR to identified the effect of nanodiamonds as carrier on HT-29 cells. The results show that antibody-conjugated nanodiamonds can also be successfully associated with HT-29 cells with specific binding without loss activity. The inhibition of HT-29 cells exhibited by peptide 3C-conjugated nanodiamonds is also more effective than peptide 3C. The results show that nanodiamonds as a drug carrier, has a certain potential value.
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Lu, Jing-Wun, and 盧敬文. "Facile Synthesis of Titanium Sulfonate-Functionalized Nanodiamonds for Selective Enrichment of Phosphopeptides." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3889xh.

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博士
國立暨南國際大學
應用化學系
105
In this work, we have developed a novel synthesis route for the production of titanium (IV) sulfonate-functionalized nanodiamonds (Ti4+-SND) as Ti4+-IMAC (Immobilized metal-ion affinity chromatography)adsorbents for selective enrichment of phosphopeptides. Nanodiamonds were first functionalized with polyarginine via EDC-mediated coupling reaction and then the titanium-sulfonate functionalization was performed by mixing with polystyrene sulfate and TiCl4 solutions. The obtained Ti4+-SNDs were used to specific capture of phosphopeptides from standard protein digests and nonfat milk digests. The results demonstrated that by taking advantage of the strong Ti4+-sulfate chelating effect and high Ti4+ loading amount, the Ti4+-SND show remarkable selectivity (β-casein/BSA = 1:1000), good sensitivity (10 fmol), and high recovery in phosphopeptide analysis. This novel approach for developing and producing IMAC adsorbents was further validated using different metal ions including Zr4+ and Fe3+. Both of the synthesized Zr4+ and Fe3+ IMAC adsorbents show excellent performance in selective enrichment of phosphopetides from complex peptide mixtures. Keywords: Polyarginine、Polystyrene sulfonate、Ti-IMAC、Phosphopeptides
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Guo, Jiun-You, and 郭俊佑. "Synthesis of biocompatible and magnetic fluorescent nanodiamonds for cell manipulation and imaging." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/22471857503585588079.

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碩士
國立暨南國際大學
應用化學系
102
Recent advances in nanotechnology for biomedical applications have rapidly growing needs for developing multifunctional nanoparticles. Here, one new class of fluorescent nanodiamond(FND) hybrids that process biocompatible, fluorescent and magnetic functionalities is presented. Magnetic iron oxide/Fluorescent nanodiamond (IO/FND) hybrids are prepared from 100 nm FNDs functionalized at the surface with polyarginine brushes to accommodate the 20 nm magnetic IOs, and then coating with a biocompatible Heparin layer. These new FND hybrids exhibit both fluorescent and magnetic properties with a maximum saturation magnetization of 4.35 emu g-1 and far-red fluorescence emission. The fluorescent intensity of FND hybrids is similar to bare FND. MTS assay reveals that FND Hybrids show have extremely low cytotoxicity toward HeLa cells. The FND hybrids are demonstrated with HeLa cell line for in vitro cellular labeling/imaging and magnetic cell manipulation. The fluorescence intensities were increased in a concentration-dependent manner by treatment with FND hybrids in HeLa cells. However, the existence of FND hybrids inside the cells did not alter cellular size distribution. The approach should be widely applicable to incorporate into a variety of biomedical applications such as hyperthermia, long-term magnetic resonance and fluorescence imaging, cell manipulation and separation.
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Lin, Yi-Chen, and 林怡辰. "Facile Synthesis of Polydopamine-Coated Nanodiamonds as Both Novel SALDI Matrix and Affinity Absorbent for Ultra-Sensitive Detection of Polycyclic Aromatic Hydrocarbons." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/y83538.

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Abstract:
碩士
國立暨南國際大學
應用化學系
105
Polycyclic aromatic hydrocarbons (PAHs) are notorious environmental pollutants generated primarily during the incomplete combustion of organic materials. Many PAHs have toxic, mutagenic and/or carcinogenic properties. In this work, polydopamine-coated nanodiamonds (PDA@NDs) were synthesized by in situ polymerization method and applied as a Surface-Assisted Laser Desorption Ionization, SALDI matrix for ultra-sensitive detection of PAHs by MALDI-TOF-MS. PDA@NDs exhibited low matrix background interference and high signal response for a large number of PAHs. Ultra-high sensitive detection of benzo[a]pyrene (BaP) was found to be in the low pictogram region. Furthermore, the PDA@NDs were utilized as a high affinity probe to enrich trace amount of BaP from aqueous solutions and to detect the PAHs in a real PM 2.5 sample. These results demonstrated that PDA@NDs show great potential serving both as MALDI matrix and affinity absorbent in ultra-sensitive detection of PAHs by MADI-TOF MS.
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Books on the topic "Nanodiamonds – Synthesis"

1

M, Gruen Dieter, Shenderova Olga A, and Vul' Alexander, eds. Synthesis, properties, and applications of ultrananocrystalline diamond. Dordrecht: Springer, 2005.

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Sung, James C. Diamond nanotechnology: Syntheses and applications. Singapore: Pan Stanford, 2009.

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1975-, Lin Jianping, ed. Diamond nanotechnology: Syntheses and applications. Singapore: Pan Stanford, 2009.

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(Editor), Olga A. Shenderova, and Dieter M. Gruen (Editor), eds. Ultrananocrystalline Diamond: Synthesis, Properties, and Applications. William Andrew Publishing, 2006.

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Gruen, Dieter M., and Olga A. Shenderova. Ultrananocrystalline Diamond: Synthesis, Properties, and Applications. Elsevier Science & Technology Books, 2006.

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Gruen, Dieter M., and Olga A. Shenderova. Ultrananocrystalline Diamond: Synthesis, Properties and Applications. Elsevier Science & Technology Books, 2012.

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Ultananocrystalline Diamond. William Andrew Publishing, 2012.

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Book chapters on the topic "Nanodiamonds – Synthesis"

1

Khan, Mohd Bilal, and Zishan H. Khan. "Nanodiamonds: Synthesis and Applications." In Advanced Structured Materials, 1–26. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6214-8_1.

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Saini, Sonakshi, Sakshi Sharma, Maya Khangembam, and Vinod Singh. "Nanodiamonds—Synthesis Techniques, Properties and Applications in Photovoltaics." In Springer Proceedings in Physics, 137–53. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-7691-8_13.

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Arnault, J. C. "Nanodiamonds: From Synthesis and Purification to Deposition Techniques, Hybrids Fabrication and Applications." In Carbon Nanoparticles and Nanostructures, 1–45. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28782-9_1.

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Kuznetsov, V. L., and Yu V. Butenko. "Synthesis and Properties of Nanostructured Carbon Materials: Nanodiamond, Onion-Like Carbon and Carbon Nanotubes." In Nanostructured Materials and Coatings for Biomedical and Sensor Applications, 187–202. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0157-1_20.

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Arnault, Jean-Charles. "Nanodiamonds: From synthesis to applications." In Handbook of Carbon-Based Nanomaterials, 209–46. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-821996-6.00007-5.

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H. Al-Tamimi, Basma, and Saad B.H. Farid. "Fullerenes and Nanodiamonds for Medical Drug Delivery." In Nanocrystals [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97867.

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Carbon is a chemical element has the ability of forming long carbonic chain. Due to its special electronic structure, each carbon atom can be linked with another carbon atom or with another element via single, double or triple covalent bonds. The special electronic structure of carbon atom affecting on its properties also affecting on its ability of existing in different forms called allotropes. During few last decades, new carbon-based nanomaterials have been described including fullerene, carbon nanotube, graphene and nanodiamond. These new allotropes attracted the interest of science and industry and became as a new and important class of materials due to its outstanding features which candidate for numerous applications. In parallel with new developments in nanomedicine especially in drug delivery field, the targeted delivery systems became an important to overcome the limitations of the old fashion systems. So, it become very important to translate this idea into reality. Fullerene and nanodiamond have a unique combination of structure, morphology and biological properties that make them as a powerful tools for targeted delivery system. So, this chapter will focus on two major aspects: synthesis routes of fullerenes and nanodiamonds, and their role in nanomedicine as drug delivery systems.
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Dolmatov, Valerii Yu. "Synthesis and Post-Synthesis Treatment of Detonation Nanodiamonds." In Ultrananocrystalline Diamond, 347–77. Elsevier, 2006. http://dx.doi.org/10.1016/b978-081551524-1.50013-5.

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Ekimov, E. A., and M. V. Kondrin. "High-pressure, high-temperature synthesis and doping of nanodiamonds." In Diamond for Quantum Applications Part 1, 161–99. Elsevier, 2020. http://dx.doi.org/10.1016/bs.semsem.2020.03.006.

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Kaur, Navneet, Chander Prakash, Aman Bhalla, and Ganga Ram Chaudhary. "Nanodiamonds and Other Organic Nanoparticles: Synthesis and Surface Modifications." In Functionalized Nanomaterials I, 135–60. CRC Press, 2020. http://dx.doi.org/10.1201/9781351021623-9.

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Fokin, Andrey A., and Peter R. Schreiner. "Selective Alkane CH Bond Substitutions: Strategies for the Preparation of Functionalized Diamondoids (Nanodiamonds)." In Strategies and Tactics in Organic Synthesis Volume 8, 317–50. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-12-386540-3.00014-9.

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Conference papers on the topic "Nanodiamonds – Synthesis"

1

Auyeung, Raymond C., Bethany M. Hudak, Rhonda M. Stroud, and Nicholas A. Charipar. "Nanodiamonds by laser filamentation in ethanol." In Synthesis and Photonics of Nanoscale Materials XVIII, edited by Andrei V. Kabashin, Jan J. Dubowski, David B. Geohegan, and Maria Farsari. SPIE, 2021. http://dx.doi.org/10.1117/12.2578761.

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Saifutdinova, Aliia, Boris Timerkaev, and Almaz Saifutdinov. "Synthesis of Nanodiamonds from Fuel Oil Processing Products Using an Arc Discharge." In 2020 7th International Congress on Energy Fluxes and Radiation Effects (EFRE). IEEE, 2020. http://dx.doi.org/10.1109/efre47760.2020.9241990.

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Popov, V. A., L. S. Belevsky, A. L. Chuvilin, U. Kaiser, I. I. Khodos, A. S. Prosviryakov, and M. N. Kovalchuk. "Detonation synthesis nanodiamonds for reinforcing metal matrix composite coatings operated under shock load." In DYMAT 2009 - 9th International Conferences on the Mechanical and Physical Behaviour of Materials under Dynamic Loading. Les Ulis, France: EDP Sciences, 2009. http://dx.doi.org/10.1051/dymat/2009159.

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Elunina, Kristina, Olga Kudryashova, and Eugeny Petrov. "Influence of Ultrasonic Treatment on the Microstructure of Particles of Detonation Synthesis Nanodiamonds." In 2021 IEEE 22nd International Conference of Young Professionals in Electron Devices and Materials (EDM). IEEE, 2021. http://dx.doi.org/10.1109/edm52169.2021.9507622.

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Chayeuski, V. V., V. V. Zhylinski, and R. G. Shtemplyuk. "Properties of functional electrochemical coatings Ni-nanodiamonds." In MODERN SYNTHETIC METHODOLOGIES FOR CREATING DRUGS AND FUNCTIONAL MATERIALS (MOSM2020): PROCEEDINGS OF THE IV INTERNATIONAL CONFERENCE. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0068716.

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Ma, Lifang, Guoliang Cui, Chunjing Tao, Hepin Yan, and Xiaogang Hu. "Synthesis and Properties of Polymethyl Methacrylate/Nanodiamond Composite Material." In 2015 International Conference on Electromechanical Control Technology and Transportation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icectt-15.2015.95.

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Illera Perozo, Danny, Humberto Gómez Vega, and Julian Yepes Martínez. "Synthesis and Characterization of Conjugated-Polymer/Graphene/Nanodiamond Nanocomposite for Electrochemical Energy Storage." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51982.

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The synthesis and characterization of Polyaniline/Graphene/ Nanodiamond Nanocomposite is reported. The resulting materials were synthetized following a polymerization in situ scheme and characterized by Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetry (TGA), Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM) and Cyclic Voltammetry (CV). The effect of different loads of graphene and nanodiamond on the resulting nanocomposite was studied. Despite the presence of the host materials, the formation of Polyaniline polymer is successfully accomplished for all samples. The microstructure of the resulting materials is core-shell type with the additives being covered (core) by layers of the conjugated polymer (shell). The thermal stability of the nanocomposites is improved as confirmed by measuring an increase on the Temperature of Decomposition and the Cross-Linking Temperature compared to bare polymer. Electrochemical characterization reveals that the presence of the additives does not affect the electroactive behaviour of the matrix polymer allowing it to reversely shift from different oxidation stages. The effect of additive content on the charge transfer kinetics is discussed.
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Forberger, Lars, Robert G. Felsted, Alex B. Bard, Danika R. Luntz-Martin, A. Nick Vamivakas, and Peter J. Pauzauskie. "Synthesis and thermometry of NV- nanodiamond alpha-NaYF4 composite nanostructures." In Optical Trapping and Optical Micromanipulation XIX, edited by Kishan Dholakia and Gabriel C. Spalding. SPIE, 2022. http://dx.doi.org/10.1117/12.2635913.

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Voznyakovskii, А., Y. Auchynnikau, V. Liopo, and Y. Eisymont. "TRIBOTECHNICAL CHARACTERISTICS OF CARBON-BEARING LUBRICANTS." In BALTTRIB. Aleksandras Stulginskis University, 2017. http://dx.doi.org/10.15544/balttrib.2017.15.

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The development of technology for manufacturing nanostructured substances in amounts that could suffice an interlaboratory research is a high priority task for the implementation of nanoproducts. The ultra dispersiblis clusters of synthetic carbon are used as on extra component in polymeric materials. The substances have a high dispersibility and activity of the surface. To study properties of mineral oils, modified ultra dispersiblis clusters of synthetic carbon is of interest. The present activity is devoted to the research of the modifying influence of ultra dispersiblis clusters of synthetic carbon on viscosity of the characteristic of mineral oils and their stability at various temperatures. In the preparation of diamond secondary suspensions not only statistic average sizes of particles should be taken into consideration, but also polydispersity parameters of nanodiamond particle population too.
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