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Littérature scientifique sur le sujet « Intercalatton »

Auteur : Grafiati

Publié le 10 mars 2023

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Articles de revues sur le sujet "Intercalatton"

Zhao, Hongmei, Xiuyan Pang et Zhixiao Zhai. « Preparation and Antiflame Performance of Expandable Graphite Modified with Sodium Hexametaphosphate ». Journal of Polymers 2015 (27 juillet 2015) : 1–5. http://dx.doi.org/10.1155/2015/821297.

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A kind of polyphosphate modified expandable graphite (EGp) was prepared in graphite oxidation and intercalation reaction with KMnO4 as oxidant, H2SO4 as intercalator, and sodium hexametaphosphate (SHMP) as assistant intercalator. The feasible mass ratio of C : KMnO4 : H2SO4 (98%) : SHMP was determined as 1.0 : 0.3 : 4.5 : 0.6, H2SO4 was diluted to 77 wt% before intercalation reaction, and the reaction lasted for 40 min at 40°C. Expanded volume and initial expansion temperature of the prepared EGp reached 600 mL/g (at 800°C) and 151°C, respectively. X-ray diffraction spectroscopy testified the intercalation and layer structure of EGp, and Fourier transform infrared spectroscopy illuminated the intercalated functional groups. Flame retardance of the prepared EGp and the referenced EG (with only H2SO4 as intercalator) for linear low density polyethylene (LLDPE) was also investigated. Addition of 30 wt% EGp to the polymer improved the limiting oxygen index (LOI) from 17.5 to 27.3%. On the other hand, the LOI of the same amount of the referenced EG was only 24.6%. Assistant intercalation of SHMP improved the dilatability and flame retardancy.

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Luo, Xingyun, Guojun Liang, Yanlu Li, Fapeng Yu et Xian Zhao. « Regulating the Electronic Structure of Freestanding Graphene on SiC by Ge/Sn Intercalation : A Theoretical Study ». Molecules 27, n^o 24 (17 décembre 2022) : 9004. http://dx.doi.org/10.3390/molecules27249004.

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The intrinsic n-type of epitaxial graphene on SiC substrate limits its applications in microelectronic devices, and it is thus vital to modulate and achieve p-type and charge-neutral graphene. The main groups of metal intercalations, such as Ge and Sn, are found to be excellent candidates to achieve this goal based on the first-principle calculation results. They can modulate the conduction type of graphene via intercalation coverages and bring out interesting magnetic properties to the entire intercalation structures without inducing magnetism to graphene, which is superior to the transition metal intercalations, such as Fe and Mn. It is found that the Ge intercalation leads to ambipolar doping of graphene, and the p-type graphene can only be obtained when forming the Ge adatom between Ge layer and graphene. Charge-neutral graphene can be achieved under high Sn intercalation coverage (7/8 bilayer) owing to the significantly increased distance between graphene and deformed Sn intercalation. These findings would open up an avenue for developing novel graphene-based spintronic and electric devices on SiC substrate.

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Banks, Tony M., Samuel F. Clay, Stephen A. Glover et Rhiannon R. Schumacher. « Correction : Mutagenicity of N-acyloxy-N-alkoxyamides as an indicator of DNA intercalation part 1 : evidence for naphthalene as a DNA intercalator ». Organic & ; Biomolecular Chemistry 14, n^o 28 (2016) : 6871. http://dx.doi.org/10.1039/c6ob90099b.

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Correction for ‘Mutagenicity of N-acyloxy-N-alkoxyamides as an indicator of DNA intercalation part 1: evidence for naphthalene as a DNA intercalator’ by Tony M. Banks, et al., Org. Biomol. Chem., 2016, 14, 3699–3714.

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Mohammad, Hashem, Busra Demir, Caglanaz Akin, Binquan Luan, Joshua Hihath, Ersin Emre Oren et M. P. Anantram. « Role of intercalation in the electrical properties of nucleic acids for use in molecular electronics ». Nanoscale Horizons 6, n^o 8 (2021) : 651–60. http://dx.doi.org/10.1039/d1nh00211b.

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In this study, using rigorous calculations, we showed that the conductance of DNA can be tuned via intercalation, depending on the redox state of the intercalator, induced energy levels, and the Fermi energy, for use in nanoelectronics.

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Saito, Makoto, Kouhei Yamada et Ikuzo Kanazawa. « Topological Quasi-Positroniums in Graphite-Alkali Metal Intercalation Compounds ». Materials Science Forum 733 (novembre 2012) : 115–18. http://dx.doi.org/10.4028/www.scientific.net/msf.733.115.

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We have analyzed the positron annihilation Angular Correlation data in the second stage graphite-potassium intercalation C24K with the theoretical formula extended from "topological quasi-positronium model" and have proposed one of the possible origins of the anisotropic narrow component in alkali-metal graphite intercalations compounds (AGICs).

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Mazerski, J., et K. Muchewicz. « The intercalation of imidazoacridinones into DNA induces conformational changes in their side chain. » Acta Biochimica Polonica 47, n^o 1 (31 mars 2000) : 65–78. http://dx.doi.org/10.18388/abp.2000_4063.

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Imidazoacridinones (IAs) are a new group of highly active antitumor compounds. The intercalation of the IA molecule into DNA is the preliminary step in the mode of action of these compounds. There are no experimental data about the structure of an intercalation complex formed by imidazoacridinones. Therefore the design of new potentially better compounds of this group should employ the molecular modelling techniques. The results of molecular dynamics simulations performed for four IA analogues are presented. Each of the compounds was studied in two systems: i) in water, and ii) in the intercalation complex with dodecamer duplex d(GCGCGCGCGCGC)2. Significant differences in the conformation of the side chain in the two environments were observed for all studied IAs. These changes were induced by electrostatic as well as van der Waals interactions between the intercalator and DNA. Moreover, the results showed that the geometry of the intercalation complex depends on: i) the chemical constitution of the side chain, and ii) the substituent in position 8 of the ring system.

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Ullah, Hameed, et Ahmad Imtiaz. « Morphological Evaluation of Variously Intercalated Pre-baked Clay ». Polish Journal of Chemical Technology 16, n^o 2 (26 juin 2014) : 5–11. http://dx.doi.org/10.2478/pjct-2014-0022.

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Abstract The use of porous materials is enjoying tremendous popularity and attention of the advance scientific communities due to their excellent adsorptive and catalytic activities. Clays are one of the most important candidates in the porous community which shows the above mentioned activities after modifing with a different intercalating agent. The paper is focused on the infiuence of some inorganic intercalating agents (NaOH) on the morphology of the variously intercalated clay samples. The alkali metal was used as the inorganic intercalating agent. The effect of intercalation temperature, intercalation agent concentration and intercalation time on the pre-baked clay morphology were also part of the study. Scanning electron microscopy (SEM) study was performed to evaluate the morphological changes of the resultant intercalates. Different morphological properties were improved significantly in the case of the inorganically modified clay samples. Thus, such intercalations are suggested to be effective if the clays under study are to be used for different industrial process at elevated conditions.

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WANG, YAN, et THANH N. TRUONG. « CORRELATION BETWEEN ELECTRONIC STRUCTURES OF METAL-INTERCALATED SINGLE WALL CARBON NANOTUBES WITH THEIR FIELD EMISSION PROPERTIES ». Journal of Theoretical and Computational Chemistry 04, spec01 (janvier 2005) : 657–68. http://dx.doi.org/10.1142/s0219633605001702.

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The effects of various metal intercalations ( Li , Na and Be ) on the electronic structures and the field emission properties of single-wall carbon nanotubes (SWNT) were investigated using the periodic plane-wave DFT method. We found that intercalations of metal tend to shift the conductive characteristics of the SWNT from those of a semiconductor to those of a quasi-metallic conductor. The Fermi levels for all metal-intercalated in SWNT are moved toward the conduction band, induced by the charge transfer from the metal to the SWNT. Intercalations of Li and Na atoms increase the field emission current, whereas Be intercalation does not affect the field emission current due to the absence of high density of states around the Fermi level. The correlation between the electronic structures for the metal-intercalated nanowires with field emission properties is further discussed in light of the above results.

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Satange, Roshan, Chien-Ying Chuang, Stephen Neidle et Ming-Hon Hou. « Polymorphic G:G mismatches act as hotspots for inducing right-handed Z DNA by DNA intercalation ». Nucleic Acids Research 47, n^o 16 (30 juillet 2019) : 8899–912. http://dx.doi.org/10.1093/nar/gkz653.

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Abstract DNA mismatches are highly polymorphic and dynamic in nature, albeit poorly characterized structurally. We utilized the antitumour antibiotic CoII(Chro)2 (Chro = chromomycin A3) to stabilize the palindromic duplex d(TTGGCGAA) DNA with two G:G mismatches, allowing X-ray crystallography-based monitoring of mismatch polymorphism. For the first time, the unusual geometry of several G:G mismatches including syn–syn, water mediated anti–syn and syn–syn-like conformations can be simultaneously observed in the crystal structure. The G:G mismatch sites of the d(TTGGCGAA) duplex can also act as a hotspot for the formation of alternative DNA structures with a GC/GA-5′ intercalation site for binding by the GC-selective intercalator actinomycin D (ActiD). Direct intercalation of two ActiD molecules to G:G mismatch sites causes DNA rearrangements, resulting in backbone distortion to form right-handed Z-DNA structures with a single-step sharp kink. Our study provides insights on intercalators-mismatch DNA interactions and a rationale for mismatch interrogation and detection via DNA intercalation.

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RIAHI, SIAVASH, MOHAMMAD REZA GANJALI et PARVIZ NOROUZI. « QUANTUM MECHANICAL DESCRIPTION OF THE INTERACTIONS BETWEEN DNA AND 9,10-ANTHRAQUINONE ». Journal of Theoretical and Computational Chemistry 07, n^o 03 (juin 2008) : 317–29. http://dx.doi.org/10.1142/s0219633608003770.

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Molecular geometries of the 9,10-anthraquinone (AQ) and DNA bases (Adenine, Guanine, Cytosine, and Thymine) were optimized using B3LYP/6-31G** method. Properties of isolated intercalator (9,10-anthraquinone) and their stacking interactions with adenine ⋯ thymine (AT) and guanine ⋯ cytosine (GC) nucleic acid base pairs were investigated by means of DFTB method. DFTB method, an approximate version of the DFT method, was extended to cover London dispersion energy. AQ exhibits a large charge delocalization and it has no site with dominant charge. This intercalator has a large polarizability and is a good electron acceptor, while base pairs are good electron donors. B3LYP/6-31G** stabilization energies of intercalator ⋯ base pair complexes are large (-18.83 kcal/mol for AT ⋯ AQ and -15.69 kcal/mol for GC ⋯ AQ). It is concluded that, the dispersion energy predominantly contributes to the stability of intercalator ⋯ DNA base pair complexes. Any procedure which does not cover dispersion energy is thus not suitable for studying the process of intercalation. The results showed that AQ changes the structure of DNA on bond length, bond angle, torsion angle, and charges.

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Thèses sur le sujet "Intercalatton"

Maggio, Mario. « Carbon-based nanomaterials ». Doctoral thesis, Universita degli studi di Salerno, 2017. http://hdl.handle.net/10556/2482.

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2014 - 2015
New layered carbon-based materials were prepared and exhaustively characterized exploiting different characterization techniques, such as thermogravimetry (TGA), differential thermal calorimetry (DSC), Fourier transform infrared (FTIR) and wide angle X-ray diffraction (WAXD). Pristine graphite (G) with high surface area and carbon black (CB) samples with different surface areas were selected as starting materials to prepare the corresponding oxidized samples, i.e. graphite oxide (GO) and carbon black oxide (oCB), with the Hummers’ method. Thanks to the strong hydrophilicity and to the lamellar structure of oxidized carbon-based materials, a rich intercalation chemistry is permitted. In fact, after treatments of GO and oCB by strong basis, ordered intercalation compounds have been obtained, not only if the starting material is crystalline like graphite oxide, but also if it is completely amorphous like oxidized carbon black. Starting basified GO, free-standing papers can be obtained by vacuum filtration, as well as by casting procedure, of colloidal dispersions of graphene oxide sheets. The use of basified GO leads to more flexible, solvent resistant and thermally stable GO papers. Spectroscopic analyses of the obtained papers have been conducted aiming to a possible rationalization of the observed behavior. [edited by author]
Per questo lavoro di tesi di dottorato, sono stati preparati nuovi nanomateriali basti su carbonio ed esaustivamente caratterizzati con tecniche quali termogravimetria (TGA), calorimetria a scansione differenziale (DSC), spettroscopia infrarossa (FT-IR) e diffrazione dei razzi X (WAXD). I materiali di partenza utilizzati per questo lavoro di tesi, sono stati la grafite ad alta area superficiale e carbon black con differenti valori di area superficiale, al fine di ottenere i corrispondenti materiali ossidati quali ossido di grafite (GO) e carbon black ossidato (oCB). Il metodo utilizzato per le ossidazioni dei suddetti starting materials è quello di Hummers. Grazie alla forte idrofilicità ed alla struttura lamellare posseduta dai materiali carboniosi ossidati, è possibile ottenere svariati composti di intercalazione trattando il GO (cristallino) e l’oCB(amorfo) con basi forti e con conseguente funzionalizzazione ionica con cationi di natura organica. Inoltre, partendo da dispersioni di GO basificato, sono stati ottenuti fogli di ossido di grafite e di grafene mediante filtrazione e/o per lenta evaporazione del solvente. Utilizzando una base nella procedura di ottenimento dei cosiddetti fogli di ossido di grafite/grafene, sono stati preparati campioni free-standing con elevata flessibilità, resistenza ai solventi e alle alte temperature. [a cura dell'autore]
XIV n.s.

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Chatakondu, Kalyan. « Organometallic intercalation chemistry ». Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258017.

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Duggan, Andrew Charles. « Fullerene intercalation chemistry ». Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298749.

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Henry, Paul Francis. « Fullerene intercalation chemistry ». Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363757.

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Saidi, Mohammed-Yazid. « Electrochemistry of intercalation ». Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/845.

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Laugaa, Philippe. « De la mono-intercalation à la tris-intercalation dans l'ADN : aspects physicochimiques et biologiques ». Paris 6, 1988. http://www.theses.fr/1988PA066666.

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Formstone, Carl. « Electronic structure of intercalation compounds ». Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276842.

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Denning, Mark Simon. « Intercalation chemistry of higher fullerenes ». Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343444.

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Wu, Qi-Hui. « Photoelectron Spectroscopy of Intercalation Phases ». Phd thesis, [S.l. : s.n.], 2003. http://tuprints.ulb.tu-darmstadt.de/342/1/Wu-Qihui-diss.pdf.

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V2O5 and LiMn2O4 are promising cathode materials for lithium-ion batteries due to their high capacities and battery voltages. The several work was mainly focused on the study of electrochemical and structural properties during lithium intercalation. But there is no detailed knowledge of the changes in electronic structure and the intercalation mechanism itself. Especially no general agreement has been reached on the nature and the extent of the interactions between host material and alkali guest atoms. This thesis addresses the electronic stucture of transition-metal oxides and its changes during the intercalation of alkali metals. The intercalation of Na and Li into V2O5 thin films and LiMn2O4 powder samples have been studied mainly using X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS) and resonant photoemission spectroscopy (RPES). The PVD prepared V2O5 thin films are nearly stoichiometric with only about 4% oxygen deficiency. After deposition onto the HOPG substrate, the oxide surface is smooth and polycrystalline. The valence band of V2O5 is formed by the hybridisation of the O2p and V3d electron states. It has been shown by RPES that the V3d admixture to the valence band is about 20%. Therefore, the real electron occupation number of the 3d electron state of the V ions in V2O5 is about 2 instead of 0, and the simple ionic model is not valid. The influence of heating on the V2O5 films has also been studied. Elevated temperatures lead to sub-stoichiometric V2O5-x that can be probed by chemically shifted components in the V2p3/2 emission line, and a decrease of O1s/V2p intensity ratios. Annealing of the sub-stoichiometric films at 400°C in an oxygen atmosphere lead to the reoxidation of vanadium to its higher oxidation state. The alkali metals are instantaneously intercalated into V2O5 when they are deposited onto the surface at room temperature. Only a small amount (about 10%) of the alkali metal atoms remain adsorbed on the surface due to the intercalation kinetics. The results obtained in this work demonstrate that the electrons of intercalated alkali metals s orbitals are mostly transferred to the transition-metal 3d orbitals and cause the reduction of the transition-metal ions as proven by the XPS and UPS data. The values of effective electron transfer for Na3s and Li2s are about 0.42 and 0.55 electrons per alkali atom, respectively. With low content of intercalated alkali metals, the electronic and crystalline structure of the host do not change considerately. For Na, an alkali saturation concentration of V2O5 films can be reached as Na1.4V2O5 without decomposition of the host, for Li, this saturation value is about Li2.5V2O5. When this limit for alkali intercalation is reached, further deposition of alkali atoms will not intercalate into the host but form oxides, peroxides and even metallic alkali on the surface. The formation of surface oxide films on the electrodes would have a severe impact on battery performance. A better understanding of such films can be essential to solve the stability problem of lithium-ion batteries, such as capacity loss, power-fade, poor cyclability, and self-discharge. After the over-intercalated samples have been kept in the ultra-high vacuum chamber for few days, the alkali metal will react further with vanadium oxides and form alkali oxides and peroxides on the surface. In this work, we have clearly demonstrated the formation of alkali oxides and peroxides species, which are probably part of the so-called solid electrode interface (SEI) layers. Finally, the electronic structure and surface composition of LiMn2O4 powder has been studied. The results show that manganese ions exist in two oxidation states: a trivalent state (Mn3+) as well as a tetravalent state (Mn4+). The photoemission intensity ration of Mn3+ to Mn4+ is about 0.9, so that the average oxidation state is 3.55 which is a little higher than the expected value of +3.5 which is probably due to small amounts of lithium oxides formed on the surface. UPS and RPES indicate that the Mn ions are in a high spin configuration, and O2p and Mn3d orbitals are strongly hybridised.

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Schelfhout, Carla Roberta Maria. « Intercalations in Dutch ». [S.l. : Nijmegen : s.n.] ; UB Nijmegen [Host], 2006. http://webdoc.ubn.ru.nl/mono/s/schelfhout_c/inteindu.pdf.

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Livres sur le sujet "Intercalatton"

Reza, Zinolabedini, et United States. National Aeronautics and Space Administration., dir. Graphite fiber intercalation : Dynamics of the bromine intercalation process. [Washington, DC] : National Aeronautics and Space Administration, 1985.

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Legrand, A. P., et S. Flandrois, dir. Chemical Physics of Intercalation. Boston, MA : Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-9649-0.

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Zabel, Hartmut, et Stuart Solin, dir. Graphite Intercalation Compounds I. Berlin, Heidelberg : Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75270-4.

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Zabel, Hartmut, et Stuart A. Solin, dir. Graphite Intercalation Compounds II. Berlin, Heidelberg : Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84479-9.

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Müller-Warmuth, W., et R. Schöllhorn, dir. Progress in Intercalation Research. Dordrecht : Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-0890-4.

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Dresselhaus, M. S., dir. Intercalation in Layered Materials. Boston, MA : Springer US, 1986. http://dx.doi.org/10.1007/978-1-4757-5556-5.

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S, Dresselhaus M., North Atlantic Treaty Organization. Scientific Affairs Division. et International School of Materials Science and Technology (10th : 1986 : Erice, Italy), dir. Intercalation in layered materials. New York : Plenum Press, 1986.

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NATO Advanced Study Institute on Chemical Physics of Intercalation (1987 Castéra-Verduzan, France). Chemical physics of intercalation. New York : Plenum, 1987.

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W, Müller-Warmuth, et Schöllhorn R, dir. Progress in intercalation research. Dordrecht : Kluwer Academic, 1994.

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Müller-Warmuth, W. Progress in Intercalation Research. Dordrecht : Springer Netherlands, 1994.

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Chapitres de livres sur le sujet "Intercalatton"

Gooch, Jan W. « Intercalation ». Dans Encyclopedic Dictionary of Polymers, 902. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_14039.

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Verrecchia, Eric P., et Luca Trombino. « Pedogenic Features ». Dans A Visual Atlas for Soil Micromorphologists, 93–133. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67806-7_4.

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AbstractFrom a historical point of view, soil micromorphology was first used in order to decipher the expressions of pedogenic processes at the microscale (Kubiëna 1938). In the preceding chapters, the Atlas listed a series of descriptive tools to help with the identification of objects. This chapter deals with specific pedofeatures encountered in a large diversity of soils and directly related to pedogenic processes. Pedological features (Brewer 1964) or pedofeatures (Bullock et al. 1985) are “discrete fabric units present in soil materials that are recognizable from an adjacent material by a difference in concentration in one or more components or by a difference in internal fabric” (Stoops 2003, 2021). In Stoops (2003, 2021), pedofeatures are subdivided into two categories: matrix pedofeatures and intrusive pedofeatures. Matrix pedofeatures can be subdivided according to their relationship with the groundmass (depletion, impregnative, and fabric pedofeatures) and to their morphology (hypocoatings, quasicoatings, matrix infilling, intercalation, and matrix nodules). Regarding the intrusive pedofeatures, they include coatings, infillings, crystals and crystal intergrowth, intercalations, and finally nodules. The proposed nomenclature of this chapter is based on the nature and morphology of the pedofeatures, simplified from Bullock et al. (1985).

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Whittingham, M. Stanley. « Intercalation Compounds ». Dans Fast Ion Transport in Solids, 69–86. Dordrecht : Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1916-0_4.

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Ley, Steven V., et Caroline M. R. Low. « Intercalation Reactions ». Dans Reactivity and Structure Concepts in Organic Chemistry, 75. Berlin, Heidelberg : Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-74672-7_9.

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Delmas, Claude. « Intercalation in oxides from 2D to 3D intercalation ». Dans Chemical Physics of Intercalation, 209–32. Boston, MA : Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-9649-0_11.

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Julien, Christian, Alain Mauger, Ashok Vijh et Karim Zaghib. « Principles of Intercalation ». Dans Lithium Batteries, 69–91. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-19108-9_3.

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Rosseinsky, M. J., D. W. Murphy, A. P. Ramirez, R. M. Fleming et O. Zhou. « Fullerene Intercalation Compounds ». Dans Springer Series in Solid-State Sciences, 11–15. Berlin, Heidelberg : Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-85049-3_2.

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Balkanski, M. « Layered Intercalation Compounds ». Dans Solid State Materials, 68–109. Berlin, Heidelberg : Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-09935-3_5.

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Lerf, A. « Molecular Intercalation Compounds ». Dans Inorganic Reactions and Methods, 282–84. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145203.ch172.

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Kikkawa, S., F. Kanamaru, M. Koizumi, Suzanne M. Rich et Allan Jacobson. « Layered Intercalation Compounds ». Dans Inorganic Syntheses, 86–89. Hoboken, NJ, USA : John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132531.ch17.

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Actes de conférences sur le sujet "Intercalatton"

Gurmendi, U., J. I. Eguiazabal et J. Nazabal. « Structure and Properties of Nanocomposites With a Poly(Ethylene Terephthalate) Matrix ». Dans ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17087.

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Polymer nanocomposites based on poly(ethylene terephthalate) PET and with an intercalated and fairly dispersed nanostructure have been obtained in the melt state using a twin screw extruder. The intercalation and dispersion levels as well as the mechanical properties were studied varying the chemical nature and amount of the organic modification of the clay as well as the clay content. The intercalation level of PET into the organoclay galleries was measured by the increase in the interlayer distance upon mixing. The surfactant content did not influence the intercalation level but an interaction between the polymeric matrix and the surfactant, through a common polar character led to easier intercalation. The observed modulus increases and consequently the overall dispersion did not almost depend on either the amount or chemical nature of the used organic modification of the clay, suggesting that the parameters leading to high intercalation differ from those lead to a high modulus of elasticity and therefore to a high dispersion level. The obtained increases in the modulus of elasticity that reflect the dispersion level were large attaining a 41% increase with respect to that of the matrix after a 6wt% clay addition.

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Dai, Lijun, Lei Li et Yujun Zhang. « EVOH/Montmorillonite Intercalation Nano-composites ». Dans 2007 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems. IEEE, 2007. http://dx.doi.org/10.1109/nems.2007.352242.

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Mimenko, I. V., V. M. Geskin et T. S. Zhuravleva. « Carbon fibers : intercalation and conductivity ». Dans International Conference on Science and Technology of Synthetic Metals. IEEE, 1994. http://dx.doi.org/10.1109/stsm.1994.835874.

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Massey, Cameron, William Barvosa-Carter et Ping Liu. « Towards High Temperature Actuation Using Graphite Intercalation Compounds ». Dans ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80090.

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Electrochemically formed graphite intercalation compounds (GICs) have many intrinsic properties well-suited for compact actuation in applications at high temperatures. GICs using ionic liquids are of interest because of their good thermal stability at elevated temperatures, high ionic conductivity, and low volatility. In this study we observed the potential and strain behavior of highly oriented pyrolytic graphite and 1-ethyl-3-methylimidazolium hexafluorophosphate subjected to a light compressive load and constant current. In situ measurements of the anode during intercalation showed a reversible strain of 2.5% to 4.5% from 100°C up to 250°C.

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Meenakshi, M., R. Sivakumar, A. Sivanantharaja et C. Sanjeeviraja. « Electrochromic performance of RF sputtered WO3 thin films by Li ion intercalation and de-intercalation ». Dans DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980463.

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Massey, Cameron, Geoffrey McKnight, Ping Liu et William Barvosa-Carter. « Graphite Intercalation Compounds as Actuation Materials ». Dans ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61155.

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The intrinsic electrochemical behavior of Graphite Intercalated Compounds (GICs) during formation offers the potential for high-force, high-strain solid-state actuation applications. To explore this behavior we submitted a “model” system, highly-oriented pyrolytic graphite (HOPG)/sulfuric acid (H2SO4), to axial compressive loads from 0 to 8 MPa, and measured the intercalation response in terms of voltage and displacement. We observed strains greater than 30% between 2 and 6 MPa, confirming the potential of GIC formation as a viable actuating mechanism. Further studies are planned in order to perform more precise analysis and examine alternate GICs.

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Béguin, F., L. Duclaux, K. Méténier, E. Frackowiak, J. P. Salvetat, J. Conard, S. Bonnamy et P. Lauginie. « Alkali-metal intercalation in carbon nanotubes ». Dans ELECTRONIC PROPERTIES OF NOVEL MATERIALS--SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES. ASCE, 1999. http://dx.doi.org/10.1063/1.59857.

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Hale, Jeffrey S., James N. Hilfiker et John A. Woollam. « Optical Constants of Electrochromic WO3 Determined by Variable Angle Spectroscopic Ellipsometry ». Dans Optical Interference Coatings. Washington, D.C. : Optica Publishing Group, 1995. http://dx.doi.org/10.1364/oic.1995.wb12.

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Variable angle spectroscopic ellipsometry (VASE) was used to measure the optical constants and thickness of electrochromic WO3 films with various intercalation levels. The films were deposited by RF magnetron sputtering to thickness between 800nm and 2000nm. The substrates were quartz with electrode layers of optically thin Al or ITO. Li+ ions were inserted into the films by applying a negative voltage to the substrate electrode (Al or ITO) relative to a counter electrode, a gold wire, in a Li+ containing electrolyte. This electrolyte was a 0.5 molar solution of LiClo4 in propylene carbonate. Additionally, in-situ experiments were done in a electrochemical chamber mounted on a VASE. Ellipsometry and transmission data were taken at several angles of incidence with several different amounts of Li+ inserted and the optical constants and thickness were solved for at each level of intercalation. Additional characterization included AFM, interference microscopy, and x-ray diffraction. Figure 1 and 2 attached show the ellipsometric and Ψ and Δ before and after intercalation of the WO3 with Li+. Figure 3 shows the transmissional data. By combining these data simultaneously in the regression fit, we are able to unambiguously determine the index of refraction and extinction coefficient during all stage of “coloring”.

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Wu, Wei, Xinran Xiao et Danghe Shi. « Heat Transfer and Thermal Stress in a Lithium-Ion Battery ». Dans ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37870.

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This paper presents a finite element based multi-scale model for a lithium-ion (Li-ion) battery cell. The model considers multi-physics including battery kinetics, diffusion, thermal and stress analysis. In battery thermal analysis, the heat source is critical. In this model, both resistive and entropic heating were considered. Simulations were carried out for a LiC6/LiPF6/LiyMn2O4 cell under a discharge-charge cycle. The heat generations due to these two heat sources were compared. The thermal stress was computed and compared with the intercalation stress for individual battery components. Within the electrode particles, the thermal induced stress was negligible. In the separator, however, the thermal induced stress was comparable or even higher than the stress caused by intercalation deformation of the electrode particles.

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Scarminio, J., Annette Gorenstein, Franco Decker, Stefano Passerini, R. Pileggi et Bruno Scrosati. « Cation intercalation in electrochromic NiO x films ». Dans San Diego, '91, San Diego, CA, sous la direction de Carl M. Lampert et Claes G. Granqvist. SPIE, 1991. http://dx.doi.org/10.1117/12.49214.

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Rapports d'organisations sur le sujet "Intercalatton"

Kwei, G. H., J. D. Jorgensen, J. E. Schirber et B. Morosin. Rare-gas intercalation into fullerene interstices. Office of Scientific and Technical Information (OSTI), août 1995. http://dx.doi.org/10.2172/132650.

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Markiewicz, R. S. Superlattice Effects in Graphite Intercalation Compounds. Fort Belvoir, VA : Defense Technical Information Center, décembre 1986. http://dx.doi.org/10.21236/ada176879.

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Salloux, K., F. Chaput, H. P. Wong, B. Dunn et M. W. Breiter. Lithium Intercalation in Vanadium Pentoxide Aerogels. Fort Belvoir, VA : Defense Technical Information Center, juillet 1995. http://dx.doi.org/10.21236/ada296987.

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Tran, T. D., L. X. Murguia, X. Song et K. Kinoshita. Lithium intercalation behavior of surface modified carbonaceous materials. Office of Scientific and Technical Information (OSTI), juillet 1997. http://dx.doi.org/10.2172/611780.

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Xu, Kang. Ionic Additives for Electrochemical Devices Using Intercalation Electrodes. Fort Belvoir, VA : Defense Technical Information Center, novembre 2010. http://dx.doi.org/10.21236/ad1000140.

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Eklund, P. C. Microscopic physical and chemical properties of graphite intercalation compounds. Office of Scientific and Technical Information (OSTI), août 1992. http://dx.doi.org/10.2172/6977572.

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Park, Heai-Ku, Kathryn Podolske, Zafar Munshi, W. H. Smyrl et B. B. Owens. QCM and Electrochemical Studies of Li Intercalation in V6O13. Fort Belvoir, VA : Defense Technical Information Center, octobre 1990. http://dx.doi.org/10.21236/ada228849.

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Daniel T. Schwartz, Bekki Liu, Marlina Lukman, Kavita M. Jeerage, William A. Steen, Haixia Dai, Qiuming Yu et J. Antonio Medina. Potential Modulated Intercalation of Alkali Cations into Metal Hexacyanoferrate Coated Electrodes. Office of Scientific and Technical Information (OSTI), février 2002. http://dx.doi.org/10.2172/792792.

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Calef, D. F. Molecular models for the intercalation of hydrogen molecules into modified graphites. Office of Scientific and Technical Information (OSTI), décembre 1995. http://dx.doi.org/10.2172/212469.

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Myshakin, Evgeniy, Wissam Saidi, Vyacheslav Romanov, Randall Cygan, Kenneth Jordan et George Guthrie. Molecular Simulation Models of Carbon Dioxide Intercalation in Hydrated Sodium Montmorillonite. Office of Scientific and Technical Information (OSTI), novembre 2016. http://dx.doi.org/10.2172/1609149.

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