1
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Cianflone E, Brouillet F, Grossin D, Soulié J, Josse C, Vig S, Fernandes MH, Tenailleau C, Duployer B, Thouron C, Drouet C. Toward Smart Biomimetic Apatite-Based Bone Scaffolds with Spatially Controlled Ion Substitutions. Nanomaterials (Basel) 2023; 13:nano13030519. [PMID: 36770480 PMCID: PMC9919144 DOI: 10.3390/nano13030519] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 01/25/2023] [Accepted: 01/26/2023] [Indexed: 05/31/2023]
Abstract
Biomimetic apatites exhibit a high reactivity allowing ion substitutions to modulate their in vivo response. We developed a novel approach combining several bioactive ions in a spatially controlled way in view of subsequent releases to address the sequence of events occurring after implantation, including potential microorganisms' colonization. Innovative micron-sized core-shell particles were designed with an external shell enriched with an antibacterial ion and an internal core substituted with a pro-angiogenic or osteogenic ion. After developing the proof of concept, two ions were particularly considered, Ag+ in the outer shell and Cu2+ in the inner core. In vitro evaluations confirmed the cytocompatibility through Ag-/Cu-substituting and the antibacterial properties provided by Ag+. Then, these multifunctional "smart" particles were embedded in a polymeric matrix by freeze-casting to prepare 3D porous scaffolds for bone engineering. This approach envisions the development of a new generation of scaffolds with tailored sequential properties for optimal bone regeneration.
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Affiliation(s)
- Edoardo Cianflone
- CIRIMAT, Université de Toulouse, CNRS, INP-ENSIACET, 31030 Toulouse, France
- CIRIMAT, Université de Toulouse, CNRS, UT3 Paul Sabatier, 31062 Toulouse, France
| | - Fabien Brouillet
- CIRIMAT, Université de Toulouse, CNRS, UT3 Paul Sabatier, 31062 Toulouse, France
| | - David Grossin
- CIRIMAT, Université de Toulouse, CNRS, INP-ENSIACET, 31030 Toulouse, France
| | - Jérémy Soulié
- CIRIMAT, Université de Toulouse, CNRS, INP-ENSIACET, 31030 Toulouse, France
| | - Claudie Josse
- Centre de Microcaractérisation Raimond Castaing, Université de Toulouse, UPS, CNRS, INP, INSA, 31400 Toulouse, France
| | - Sanjana Vig
- Faculdade de Medicina Dentaria, Universidade do Porto, Rua Dr Manuel Pereira da Silva, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, University of Porto, 4160-007 Porto, Portugal
| | - Maria Helena Fernandes
- Faculdade de Medicina Dentaria, Universidade do Porto, Rua Dr Manuel Pereira da Silva, 4200-393 Porto, Portugal
- LAQV/REQUIMTE, University of Porto, 4160-007 Porto, Portugal
| | | | - Benjamin Duployer
- CIRIMAT, Université de Toulouse, CNRS, UT3 Paul Sabatier, 31062 Toulouse, France
| | - Carole Thouron
- CIRIMAT, Université de Toulouse, CNRS, INP-ENSIACET, 31030 Toulouse, France
| | - Christophe Drouet
- CIRIMAT, Université de Toulouse, CNRS, INP-ENSIACET, 31030 Toulouse, France
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2
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Kenfaui D, Guillemet-Fritsch S, Valdez-Nava Z, Laudebat L, Tenailleau C, Dufour P, Locatelli ML. Tuning electrical conductivity in AlN-based ceramics by incorporating graphene. Ann Ital Chir 2022. [DOI: 10.1016/j.jeurceramsoc.2022.12.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Kenfaui D, Valdez-Nava Z, Laudebat L, Locatelli ML, Combettes C, Bley V, Dinculescu S, Tenailleau C, Dufour P, Guillemet-Fritsch S. Innovative ceramic-matrix composite substrates with tunable electrical conductivity for high-power applications. Sci Technol Adv Mater 2022; 23:735-751. [PMID: 36386551 PMCID: PMC9645280 DOI: 10.1080/14686996.2022.2137695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 09/06/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
A wide band gap semiconductor power module can operate at higher voltages as compared with its traditional silicon counterpart. However, its insulating system undergoes stronger electric fields at the triple point between the ceramic substrate, the metallic tracks and the encapsulating polymer, which can dramatically reduce its lifespan. Here we report an original concept based on the local modification of the substrate properties to mitigate such electrical stress. Numerical simulations revealed its potential to reduce this constraint by up to 50%. This concept was realized by developing, through a practical approach, a novel substrate made of an AlN-based ceramic (material A) integrating a nanocomposite volume endowed with controlled properties and geometry. This approach implies first the spark plasma sintering of the AlN powder with additives (Y2O3, CaF2) to endow the material A with a very low electrical conductivity (σ) and high thermal conductivity (k). Graphene nanoplatelets (GNP) were incorporated within this material to fabricate a nanocomposite with a controlled σ anisotropy that otherwise reached a striking ratio of 106 at 20°C for 1.25 vol% GNP. Our approach secondly aimed at developing an effective process allowing to integrate this nanocomposite into the material A with a very high degree of reproducibility. It finally consisted in establishing the electrical contacts on the achieved substrate and encapsulating it for breakdown testing. The novel substrate enabled a mitigation of the electrical constraint by diminishing its intensity and shifting it from the triple point to a less constrained area. It already brought an improvement in breakdown voltage (VB) by 15% as compared to the traditional substrate, and revealed the potential for achieving higher VB as well. This work lays the foundation for the development of novel multifunctional ceramic-matrix composite substrates sought for power electronics as well as for other potential applications.
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Affiliation(s)
- Driss Kenfaui
- LAPLACE, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- CIRIMAT (Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux), Université́ de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | | | - Lionel Laudebat
- LAPLACE, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
- Institut National Universitaire Champollion, Université de Toulouse, Place de Verdun, Albi, France
| | | | - Céline Combettes
- LAPLACE, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Vincent Bley
- LAPLACE, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Sorin Dinculescu
- LAPLACE, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Christophe Tenailleau
- CIRIMAT (Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux), Université́ de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Pascal Dufour
- CIRIMAT (Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux), Université́ de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Sophie Guillemet-Fritsch
- CIRIMAT (Centre Inter-universitaire de Recherche et d’Ingénierie des Matériaux), Université́ de Toulouse, CNRS, INPT, UPS, Toulouse, France
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4
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Breniaux E, Dufour P, Karthick S, Yildirim C, Bouclé J, Vedraine S, Ratel-Ramond N, Tenailleau C. Perovskite CsPbI2Br thin films prepared under nitrogen flow and black phase stabilization in the presence of a two‐dimensional inorganic halide material and indium. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Edouard Breniaux
- CIRIMAT: Centre Inter-universitaire de Recherche et d'Ingenierie des Materiaux Chemistry FRANCE
| | - Pascal Dufour
- CIRIMAT: Centre Inter-universitaire de Recherche et d'Ingenierie des Materiaux Chemistry FRANCE
| | | | | | | | | | | | - Christophe Tenailleau
- Centre Interuniversitaire de Recherche et d'Ingenierie des Materiaux Chemistry 118 route de NarbonneUniversité Paul Sabatier 31062 Toulouse FRANCE
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5
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Bedel Pereira E, Bassaler J, Laval H, Holec J, Monflier R, Mesnilgrente F, Salvagnac L, Daran E, Duployer B, Tenailleau C, Gourdon A, Jancarik A, Séguy I. Benzohexacene guide in accurate determination of field effect carrier mobilities in long acenes. RSC Adv 2022; 12:671-680. [PMID: 35425115 PMCID: PMC8697683 DOI: 10.1039/d1ra07808a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/09/2021] [Indexed: 11/21/2022] Open
Abstract
Oligoacenes are promising materials in the field of electronic devices since they exhibit high charge carrier mobility and more particularly as a semiconductor in thin film transistors. Herein, we investigate the field effect charge carrier mobility of benzohexacene, recently obtained by cheletropic decarbonylation at moderate temperature. Initially, high performance bottom contact organic thin-film transistors (OTFTs) were fabricated using tetracene to validate the fabrication process. For easier comparison, the geometries and channel sizes of the fabricated devices are the same for the two acenes. The charge transport in OTFTs being closely related to the organic thin film at the dielectric/organic semiconductor interface, the structural and morphological features of the thin films of both materials are therefore studied according to deposition conditions. Finally, by extracting relevant device parameters the benzohexacene based OTFT shows a four-probe contact-corrected hole mobility value of up to 0.2 cm2 V−1 s−1. Four-probes mobility vs. VGS in the linear regime (VDS = −10 V) for benzohexacene based transistor.![]()
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Affiliation(s)
| | - J. Bassaler
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
| | - H. Laval
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
| | - J. Holec
- CEMES-CNRS, 29 Rue J. Marvig, 31055 Toulouse, France
| | - R. Monflier
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
| | - F. Mesnilgrente
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
| | - L. Salvagnac
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
| | - E. Daran
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
| | - B. Duployer
- CIRIMAT, Université de Toulouse, CNRS, Université Toulouse 3 – Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - C. Tenailleau
- CIRIMAT, Université de Toulouse, CNRS, Université Toulouse 3 – Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - A. Gourdon
- CEMES-CNRS, 29 Rue J. Marvig, 31055 Toulouse, France
| | - A. Jancarik
- CEMES-CNRS, 29 Rue J. Marvig, 31055 Toulouse, France
- CRPP, UMR CNRS 5031, Université de Bordeaux, 33600 Pessac, France
| | - I. Séguy
- LAAS-CNRS, Université de Toulouse, UPS, 31031 Toulouse, France
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6
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Breniaux E, Dufour P, Guillemet‐Fritsch S, Tenailleau C. Unraveling All‐Inorganic CsPbI
3
and CsPbI
2
Br Perovskite Thin Films Formation – Black Phase Stabilization by Cs
2
PbCl
2
I
2
Addition and Flash‐Annealing. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100304] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Pascal Dufour
- Université de Toulouse CIRIMAT, CNRS Toulouse France
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7
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Farno M, Lamarche C, Tenailleau C, Cavalié S, Duployer B, Cussac D, Parini A, Sallerin B, Girod Fullana S. Low-energy electron beam sterilization of solid alginate and chitosan, and their polyelectrolyte complexes. Carbohydr Polym 2021; 261:117578. [PMID: 33766327 DOI: 10.1016/j.carbpol.2020.117578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/18/2020] [Accepted: 12/28/2020] [Indexed: 01/24/2023]
Abstract
Polysaccharidic scaffolds hold great hope in regenerative medicine, however their sterilization still remains challenging since conventional methods are deleterious. Recently, electron beams (EB) have raised interest as emerging sterilization techniques. In this context, the aim of this work was to study the impact of EB irradiations on polysaccharidic macroporous scaffolds. The effects of continuous and pulsed low energy EB were examined on polysaccharidic or on polyelectrolyte complexes (PEC) scaffolds by SEC-MALLS, FTIR and EPR. Then the scaffolds' physicochemical properties: swelling, architecture and compressive modulus were investigated. Finally, sterility and in vitro biocompatibility of irradiated scaffolds were evaluated to validate the effectiveness of our approach. Continuous beam irradiations appear less deleterious on alginate and chitosan chains, but the use of a pulsed beam limits the time of irradiation and better preserve the architecture of PEC scaffolds. This work paves the way for low energy EB tailor-made sterilization of sensitive porous scaffolds.
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Affiliation(s)
- Maylis Farno
- Université Paul Sabatier, CIRIMAT Institut Carnot Chimie Balard CIRIMAT, Faculté de Pharmacie, Toulouse, France; Université Paul Sabatier, I2MC, Toulouse, France
| | | | - Christophe Tenailleau
- Université Paul Sabatier, CIRIMAT Institut Carnot Chimie Balard CIRIMAT, UPS, Toulouse, France
| | - Sandrine Cavalié
- Université Paul Sabatier, CIRIMAT Institut Carnot Chimie Balard CIRIMAT, Faculté de Pharmacie, Toulouse, France
| | - Benjamin Duployer
- Université Paul Sabatier, CIRIMAT Institut Carnot Chimie Balard CIRIMAT, UPS, Toulouse, France
| | | | | | | | - Sophie Girod Fullana
- Université Paul Sabatier, CIRIMAT Institut Carnot Chimie Balard CIRIMAT, Faculté de Pharmacie, Toulouse, France.
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8
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Bushkalova R, Farno M, Tenailleau C, Duployer B, Cussac D, Parini A, Sallerin B, Girod Fullana S. Alginate-chitosan PEC scaffolds: A useful tool for soft tissues cell therapy. Int J Pharm 2019; 571:118692. [DOI: 10.1016/j.ijpharm.2019.118692] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 08/13/2019] [Accepted: 09/09/2019] [Indexed: 12/28/2022]
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9
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Tenailleau C, Aharon S, Cohen BE, Etgar L. Cell refinement of CsPbBr 3 perovskite nanoparticles and thin films. Nanoscale Adv 2019; 1:147-153. [PMID: 36132470 PMCID: PMC9473210 DOI: 10.1039/c8na00122g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 09/11/2018] [Indexed: 06/01/2023]
Abstract
In this work, we performed a detailed study of the phase transformations and structural unit cell parameters of CsPbBr3 nanoparticles (NPs) and thin films. In situ X-ray diffraction patterns were acquired as a function of temperature, where the positions and widths of the diffraction peaks were systematically tracked upon heating and cooling down to room temperature (RT). Scanning electron microscopy provides physical insight on the CsPbBr3 thin films upon annealing and transmission electron microscopy gives physical and crystallographic information for the CsPbBr3 NPs using electron diffraction. The secondary phase(s) CsPb2Br5 (and CsPb4Br6) are clearly observed in the XRD patterns of both nanoparticles and thin films upon heating to 500 K, whilst from 500 K to 595 K, these phases remain in small amounts and are kept like this upon cooling down to RT. However, in the case of thin films, the CsPb2Br5 secondary phase disappears completely above 580 K and pure cubic CsPbBr3 is observed up to 623 K. The CsPbBr3 phase is then kept upon cooling down to RT, achieving pure CsPbBr3 phase. This study provides detailed understanding of the phase behavior vs. temperature of CsPbBr3 NPs and thin films, which opens the way to pure CsPbBr3 phase, an interesting material for optoelectronic applications.
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Affiliation(s)
| | - Sigalit Aharon
- The Hebrew University of Jerusalem, Institute of Chemistry, Casali Center for Applied Chemistry Jerusalem Israel
| | - Bat-El Cohen
- The Hebrew University of Jerusalem, Institute of Chemistry, Casali Center for Applied Chemistry Jerusalem Israel
| | - Lioz Etgar
- The Hebrew University of Jerusalem, Institute of Chemistry, Casali Center for Applied Chemistry Jerusalem Israel
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10
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Nengovhela A, Braga J, Denys C, de Beer F, Tenailleau C, Taylor PJ. Associated tympanic bullar and cochlear hypertrophy define adaptations to true deserts in African gerbils and laminate-toothed rats (Muridae: Gerbillinae and Murinae). J Anat 2018; 234:179-192. [PMID: 30474264 DOI: 10.1111/joa.12906] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2018] [Indexed: 10/27/2022] Open
Abstract
Hearing capabilities in desert rodents such as gerbils and heteromyids have been inferred from both anatomical and ecological aspects and tested with experiments and theoretical models. However, very few studies have focused on other desert-adapted species. In this study, a refined three-dimensional morphometric approach was used on three African rodent tribes (Otomyini, Taterillini and Gerbillini) to describe the cochlear and tympanic bullar morphology, and to explore the role of phylogeny, allometry and ecology to better understand the underlying mechanism of any observed trends of hypertrophy in the bulla and associated changes in the cochlea. As a result, desert-adapted species could be distinguished from mesic and semi-arid taxa by the gross cochlear dimensions, particularly the oval window, which is larger in desert species. Bullar and cochlear modifications between species could be explained by environment (bulla and oval window), phylogeny (cochlear curvature gradient) and/or allometry (cochlear relative length, oval window and bulla) with some exceptions. Based on their ear anatomy, we predict that Desmodillus auricularis and Parotomys brantsii should be sensitive to low-frequency sounds, with D. auricularis sensitive to high-frequency sounds, too. This study concludes that in both arid and semi-arid adapted laminate-toothed rats and gerbils there is bulla and associated cochlea hypertrophy, particularly in true desert species. Gerbils also show tightly coiled cochlea but the significance of this is debatable and may have nothing to do with adaptations to any specific acoustics in the desert environment.
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Affiliation(s)
- Aluwani Nengovhela
- Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse, UMR 5288, CNRS, Université de Toulouse (Paul Sabatier), Toulouse, France.,South African Research Chair in Biodiversity and Change and Centre for Invasion Biology, School of Mathematical and Natural Sciences, University of Venda, Thohoyandou, South Africa
| | - José Braga
- Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse, UMR 5288, CNRS, Université de Toulouse (Paul Sabatier), Toulouse, France.,Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa
| | - Christiane Denys
- Institut de Systématique, Evolution, Biodiversité, UMR 7205, CNRS, MNHN, UPMC, EPHE, Sorbonne Universités, Paris, France
| | - Frikkie de Beer
- South African Nuclear Energy Corporation, Pelindaba, North West Province, South Africa
| | - Christophe Tenailleau
- Centre Inter-Universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085, CNRS, Université de Toulouse (Paul Sabatier), Toulouse, France
| | - Peter J Taylor
- South African Research Chair in Biodiversity and Change and Centre for Invasion Biology, School of Mathematical and Natural Sciences, University of Venda, Thohoyandou, South Africa.,Core Team Member of the Centre of Invasion Biology, Stellenbosch University, Stellenbosch, South Africa.,School of Life Sciences, University of KwaZulu-Natal, Durban, South Africa
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11
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Carayon D, Adhikari K, Monsarrat P, Dumoncel J, Braga J, Duployer B, Delgado M, Fuentes-Guajardo M, de Beer F, Hoffman JW, Oettlé AC, Donat R, Pan L, Ruiz-Linares A, Tenailleau C, Vaysse F, Esclassan R, Zanolli C. A geometric morphometric approach to the study of variation of shovel-shaped incisors. Am J Phys Anthropol 2018; 168:229-241. [PMID: 30267417 DOI: 10.1002/ajpa.23709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/20/2018] [Accepted: 08/23/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVES The scoring and analysis of dental nonmetric traits are predominantly accomplished by using the Arizona State University Dental Anthropology System (ASUDAS), a standard protocol based on strict definitions and three-dimensional dental plaques. However, visual scoring, even when controlled by strict definitions of features, visual reference, and the experience of the observer, includes an unavoidable part of subjectivity. In this methodological contribution, we propose a new quantitative geometric morphometric approach to quickly and efficiently assess the variation of shoveling in modern human maxillary central incisors (UI1). MATERIALS AND METHODS We analyzed 87 modern human UI1s by means of virtual imaging and the ASU-UI1 dental plaque grades using geometric morphometrics by placing semilandmarks on the labial crown aspect. The modern human sample was composed of individuals from Europe, Africa, and Asia and included representatives of all seven grades defined by the ASUDAS method. RESULTS Our results highlighted some limitations in the use of the current UI1 ASUDAS plaque, indicating that it did not necessarily represent an objective gradient of expression of a nonmetric tooth feature. Rating of shoveling tended to be more prone to intra- and interobserver bias for the highest grades. In addition, our analyses suggest that the observers were strongly influenced by the depth of the lingual crown aspect when assessing the shoveling. DISCUSSION In this context, our results provide a reliable and reproducible framework reinforced by statistical results supporting the fact that open scale numerical measurements can complement the ASUDAS method.
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Affiliation(s)
- Delphine Carayon
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France.,Faculté d'Odontologie, Université Montpellier I, France
| | - Kaustubh Adhikari
- Department of Genetics, Evolution and Environment, and UCL Genetics Institute, University College London, London, UK
| | - Paul Monsarrat
- Faculté d'Odontologie, Université Toulouse III-Paul Sabatier, Toulouse, France.,STROMALab, CNRS ERL 5311, EFS, INP-ENVT, Inserm, Université Toulouse III-Paul Sabatier, Toulouse, France
| | - Jean Dumoncel
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France
| | - José Braga
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France.,Evolutionary Studies Institute and School of Geosciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Benjamin Duployer
- Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS, Université de Toulouse III-Paul Sabatier, Toulouse, France
| | - Miguel Delgado
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, República Argentina.,División Antropología, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata, República Argentina
| | - Macarena Fuentes-Guajardo
- Department of Genetics, Evolution and Environment, and UCL Genetics Institute, University College London, London, UK.,Departamento de Tecnología Médica, Facultad de Ciencias de la Salud, Universidad de Tarapacá, Arica, Chile
| | - Frikkie de Beer
- Radiation Science Department, South African Nuclear Energy Corporation (Necsa), Pelindaba, South Africa
| | - Jakobus W Hoffman
- Radiation Science Department, South African Nuclear Energy Corporation (Necsa), Pelindaba, South Africa
| | - Anna C Oettlé
- Department of Anatomy, University of Pretoria, South Africa.,Department of Anatomy, Sefako Makgatho Health Sciences University, South Africa
| | - Richard Donat
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France.,Institut National de Recherches Archéologiques Préventives-St. Estève, Saint Estève, France
| | - Lei Pan
- Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Beijing, China.,State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Nanjing, China
| | - Andres Ruiz-Linares
- Department of Genetics, Evolution and Environment, and UCL Genetics Institute, University College London, London, UK.,Ministry of Education Key Laboratory of Contemporary Anthropology and Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, China.,Laboratory of Biocultural Anthropology, Law, Ethics, and Health (Centre National de la Recherche Scientifique and Etablissement Français du Sang, UMR-7268), Aix-Marseille University, Marseille, France
| | - Christophe Tenailleau
- Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS, Université de Toulouse III-Paul Sabatier, Toulouse, France
| | - Frédéric Vaysse
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France.,Faculté d'Odontologie, Université Toulouse III-Paul Sabatier, Toulouse, France
| | - Rémi Esclassan
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France.,Faculté d'Odontologie, Université Toulouse III-Paul Sabatier, Toulouse, France
| | - Clément Zanolli
- UMR 5288 CNRS, Université Toulouse III-Paul Sabatier, Toulouse, France
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12
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Marín L, Gao Y, Vallet M, Abdallah I, Warot-Fonrose B, Tenailleau C, Lucero AT, Kim J, Esteve A, Chabal YJ, Rossi C. Performance Enhancement via Incorporation of ZnO Nanolayers in Energetic Al/CuO Multilayers. Langmuir 2017; 33:11086-11093. [PMID: 28950064 DOI: 10.1021/acs.langmuir.7b02964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Al/CuO energetic structure are attractive materials due to their high thermal output and propensity to produce gas. They are widely used to bond components or as next generation of MEMS igniters. In such systems, the reaction process is largely dominated by the outward migration of oxygen atoms from the CuO matrix toward the aluminum layers, and many recent studies have already demonstrated that the interfacial nanolayer between the two reactive layers plays a major role in the material properties. Here we demonstrate that the ALD deposition of a thin ZnO layer on the CuO prior to Al deposition (by sputtering) leads to a substantial increase in the efficiency of the overall reaction. The CuO/ZnO/Al foils generate 98% of their theoretical enthalpy within a single reaction at 900 °C, whereas conventional ZnO-free CuO/Al foils produce only 78% of their theoretical enthalpy, distributed over two distinct reaction steps at 550 °C and 850 °C. Combining high-resolution transmission electron microscopy, X-ray diffraction, and differential scanning calorimetry, we characterized the successive formation of a thin zinc aluminate (ZnAl2O4) and zinc oxide interfacial layers, which act as an effective barrier layer against oxygen diffusion at low temperature.
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Affiliation(s)
- Lorena Marín
- LAAS-CNRS, University of Toulouse , 7 Avenue du colonel Roche, 31077 Toulouse, France
| | - Yuzhi Gao
- LAAS-CNRS, University of Toulouse , 7 Avenue du colonel Roche, 31077 Toulouse, France
- Department of Materials Science and Engineering, The University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Maxime Vallet
- CEMES-CNRS, University of Toulouse , 29 rue Jeanne Marvig, 31055 Toulouse, France
| | - Iman Abdallah
- LAAS-CNRS, University of Toulouse , 7 Avenue du colonel Roche, 31077 Toulouse, France
| | | | | | - Antonio T Lucero
- Department of Materials Science and Engineering, The University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Jiyoung Kim
- Department of Materials Science and Engineering, The University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Alain Esteve
- LAAS-CNRS, University of Toulouse , 7 Avenue du colonel Roche, 31077 Toulouse, France
| | - Yves J Chabal
- Department of Materials Science and Engineering, The University of Texas at Dallas , Richardson, Texas 75080, United States
| | - Carole Rossi
- LAAS-CNRS, University of Toulouse , 7 Avenue du colonel Roche, 31077 Toulouse, France
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Schardosim M, Soulié J, Poquillon D, Cazalbou S, Duployer B, Tenailleau C, Rey C, Hübler R, Combes C. Freeze-casting for PLGA/carbonated apatite composite scaffolds: Structure and properties. Materials Science and Engineering: C 2017; 77:731-738. [DOI: 10.1016/j.msec.2017.03.302] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/28/2017] [Accepted: 03/31/2017] [Indexed: 12/21/2022]
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Pan L, Thackeray JF, Dumoncel J, Zanolli C, Oettlé A, de Beer F, Hoffman J, Duployer B, Tenailleau C, Braga J. Intra-individual metameric variation expressed at the enamel-dentine junction of lower post-canine dentition of South African fossil hominins and modern humans. Am J Phys Anthropol 2017; 163:806-815. [DOI: 10.1002/ajpa.23240] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 04/17/2017] [Accepted: 04/17/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Lei Pan
- Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences; Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences; Beijing 100044 China
- Laboratoire d'Anthropobiologie Moléculaire et d'Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier); Toulouse 31000 France
| | - John Francis Thackeray
- Evolutionary Studies Institute and School of Geosciences, University of the Witwatersrand, PO WITS; Johannesburg 2050 South Africa
| | - Jean Dumoncel
- Laboratoire d'Anthropobiologie Moléculaire et d'Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier); Toulouse 31000 France
| | - Clément Zanolli
- Laboratoire d'Anthropobiologie Moléculaire et d'Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier); Toulouse 31000 France
| | - Anna Oettlé
- Department of Anatomy, School of Medicine, Faculty of Health Sciences; University of Pretoria; Pretoria South Africa
| | - Frikkie de Beer
- Radiation Science Department; South African Nuclear Energy Corporation (Necsa); Pelindaba North West Province South Africa
| | - Jakobus Hoffman
- Radiation Science Department; South African Nuclear Energy Corporation (Necsa); Pelindaba North West Province South Africa
| | - Benjamin Duployer
- Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS-Université de Toulouse (Paul Sabatier); Toulouse Cedex 9 31062 France
| | - Christophe Tenailleau
- Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS-Université de Toulouse (Paul Sabatier); Toulouse Cedex 9 31062 France
| | - José Braga
- Laboratoire d'Anthropobiologie Moléculaire et d'Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier); Toulouse 31000 France
- Evolutionary Studies Institute and School of Geosciences, University of the Witwatersrand, PO WITS; Johannesburg 2050 South Africa
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Ceccaldi C, Bushkalova R, Cussac D, Duployer B, Tenailleau C, Bourin P, Parini A, Sallerin B, Girod Fullana S. Elaboration and evaluation of alginate foam scaffolds for soft tissue engineering. Int J Pharm 2017; 524:433-442. [DOI: 10.1016/j.ijpharm.2017.02.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/17/2017] [Accepted: 02/20/2017] [Indexed: 01/18/2023]
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Beaudet A, Dumoncel J, de Beer F, Duployer B, Durrleman S, Gilissen E, Hoffman J, Tenailleau C, Thackeray JF, Braga J. Morphoarchitectural variation in South African fossil cercopithecoid endocasts. J Hum Evol 2016; 101:65-78. [PMID: 27886811 DOI: 10.1016/j.jhevol.2016.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 09/02/2016] [Accepted: 09/05/2016] [Indexed: 12/24/2022]
Abstract
Despite the abundance of well-preserved crania and natural endocasts in the South African Plio-Pleistocene cercopithecoid record, which provide direct information relevant to the evolution of their endocranial characteristics, few studies have attempted to characterize patterns of external brain morphology in this highly successful primate Superfamily. The availability of non-destructive penetrating radiation imaging systems, together with recently developed computer-based analytical tools, allow for high resolution virtual imaging and modeling of the endocranial casts and thus disclose new perspectives in comparative paleoneurology. Here, we use X-ray microtomographic-based 3D virtual imaging and quantitative analyses to investigate the endocranial organization of 14 cercopithecoid specimens from the South African sites of Makapansgat, Sterkfontein, Swartkrans, and Taung. We present the first detailed comparative description of the external neuroanatomies that characterize these Plio-Pleistocene primates. Along with reconstruction of endocranial volumes, we combine a semi-automatic technique for extracting the neocortical sulcal pattern together with a landmark-free surface deformation method to investigate topographic differences in morphostructural organization. Besides providing and comparing for the first time endocranial volume estimates of extinct Plio-Pleistocene South African cercopithecoid taxa, we report additional information regarding the variation in the sulcal pattern of Theropithecus oswaldi subspecies, and notably of the central sulcus, and the neuroanatomical condition of the colobine taxon Cercopithecoides williamsi, suggested to be similar for some aspects to the papionin pattern, and discuss potential phylogenetic and taxonomic implications. Further research in virtual paleoneurology, applied to specimens from a wider geographic area, is needed to clarify the polarity, intensity, and timing of cortical surface evolution in cercopithecoid lineages.
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Affiliation(s)
- Amélie Beaudet
- Department of Anatomy, University of Pretoria, PO Box 2034, Pretoria 0001, South Africa; Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier), 37 Allées Jules Guesde, 31073 Toulouse Cedex 3, France.
| | - Jean Dumoncel
- Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier), 37 Allées Jules Guesde, 31073 Toulouse Cedex 3, France; Institut de Recherche en Informatique de Toulouse, UMR 5505 CNRS-Université de Toulouse (Paul Sabatier), 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Frikkie de Beer
- Radiation Science Department, South African Nuclear Energy Corporation, Pelindaba, North West Province, South Africa
| | - Benjamin Duployer
- Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS-Université de Toulouse (Paul Sabatier), 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Stanley Durrleman
- Aramis Team, INRIA Paris, Sorbonne Universités, UPMC Université Paris 06 UMR S 1127, Inserm U 1127, CNRS UMR 7225, Institut du Cerveau et de la Moelle épinière, 47 boulevard de l'hôpital, 75013 Paris, France
| | - Emmanuel Gilissen
- Department of African Zoology, Royal Museum for Central Africa, Leuvensesteenweg, 3080 Tervuren, Belgium; Laboratory of Histology and Neuropathology, Université Libre de Bruxelles, 1070 Brussels, Belgium
| | - Jakobus Hoffman
- Radiation Science Department, South African Nuclear Energy Corporation, Pelindaba, North West Province, South Africa
| | - Christophe Tenailleau
- Centre Inter-universitaire de Recherche et d'Ingénierie des Matériaux, UMR 5085 CNRS-Université de Toulouse (Paul Sabatier), 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - John Francis Thackeray
- Evolutionary Studies Institute and School of Geosciences, University of the Witwatersrand, Private Bag 3, Wits, 2050 Johannesburg, South Africa
| | - José Braga
- Laboratoire d'Anthropologie Moléculaire et Imagerie de Synthèse, UMR 5288 CNRS-Université de Toulouse (Paul Sabatier), 37 Allées Jules Guesde, 31073 Toulouse Cedex 3, France; Evolutionary Studies Institute and School of Geosciences, University of the Witwatersrand, Private Bag 3, Wits, 2050 Johannesburg, South Africa
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Ter Halle A, Ladirat L, Gendre X, Goudouneche D, Pusineri C, Routaboul C, Tenailleau C, Duployer B, Perez E. Understanding the Fragmentation Pattern of Marine Plastic Debris. Environ Sci Technol 2016; 50:5668-75. [PMID: 27138466 DOI: 10.1021/acs.est.6b00594] [Citation(s) in RCA: 275] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The global estimation of microplastic afloat in the ocean is only approximately 1% of annual global plastic inputs. This reflects fundamental knowledge gaps in the transformation, fragmentation, and fates of microplastics in the ocean. In order to better understand microplastic fragmentation we proceeded to a thorough physicochemical characterization of samples collected from the North Artlantic subtropical gyre during the sea campaign Expedition seventh Continent in May 2014. The results were confronted with a mathematical approach. The introduction of mass distribution in opposition to the size distribution commonly proposed in this area clarify the fragmentation pattern. The mathematical analysis of the mass distribution points out a lack of debris with mass lighter than 1 mg. Characterization by means of microscopy, microtomography, and infrared microscopy gives a better understanding of the behavior of microplastic at sea. Flat pieces of debris (2 to 5 mm in length) typically have one face that is more photodegraded (due to exposure to the sun) and the other with more biofilm, suggesting that they float in a preferred orientation. Smaller debris, with a cubic shape (below 2 mm), seems to roll at sea. All faces are evenly photodegraded and they are less colonized. The breakpoint in the mathematical model and the experimental observation around 2 mm leads to the conclusion that there is a discontinuity in the rate of fragmentation: we hypothesized that the smaller microplastics, the cubic ones mostly, are fragmented much faster than the parallelepipeds.
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Affiliation(s)
- Alexandra Ter Halle
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP), UMR CNRS 5623, Université Paul Sabatier-UPS , Bâtiment 2R1, 3ème étage, 118, route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Lucie Ladirat
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP), UMR CNRS 5623, Université Paul Sabatier-UPS , Bâtiment 2R1, 3ème étage, 118, route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Xavier Gendre
- Institut de Mathématique de Toulouse (IMT), UMR CNRS 5219, Université Paul Sabatier , 133, route de Narbonne, 31062 Toulouse Cedex 4, France
| | - Dominique Goudouneche
- Centre de Microscopie Electronique Appliquée à la Biologie,Faculté de Médecine Toulouse Rangueil, Université de Toulouse , 133, route de Narbonne, 31062 Toulouse Cedex 4, France
| | - Claire Pusineri
- Ocean Science & Logistic , 14 rue Cresson, 97310 Kourou, France
| | - Corinne Routaboul
- Université de Toulouse, UPS, ICT , 118 route de Narbonne, F-31062 Toulouse Cedex 9, France
| | - Christophe Tenailleau
- Centre Interuniversitaire de Recherche et d'Ingénierie des MATériaux (CIRIMAT), UMR CNRS 5085, Université Paul Sabatier-UPS , 118 route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Benjamin Duployer
- Centre Interuniversitaire de Recherche et d'Ingénierie des MATériaux (CIRIMAT), UMR CNRS 5085, Université Paul Sabatier-UPS , 118 route de Narbonne, 31062 Toulouse Cedex 09, France
| | - Emile Perez
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP), UMR CNRS 5623, Université Paul Sabatier-UPS , Bâtiment 2R1, 3ème étage, 118, route de Narbonne, 31062 Toulouse Cedex 09, France
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Dupuis S, Sulekar S, Kim JH, Han H, Dufour P, Tenailleau C, Nino JC, Guillemet-Fritsch S. Colossal permittivity and low losses in Ba1–Sr TiO3– reduced nanoceramics. Ann Ital Chir 2016. [DOI: 10.1016/j.jeurceramsoc.2015.10.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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19
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Arras R, Ly Le T, Guillemet-Fritsch S, Dufour P, Tenailleau C. First-principles electronic structure calculations for the whole spinel oxide solid solution range MnxCo3−xO4 (0 ≤ x ≤ 3) and their comparison with experimental data. Phys Chem Chem Phys 2016; 18:26166-26176. [DOI: 10.1039/c6cp05554k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal spinel oxides have recently been suggested for the creation of efficient photovoltaic cells or photocatalysts.
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Affiliation(s)
- Rémi Arras
- CEMES
- Université de Toulouse
- CNRS
- UPS
- F-31055 Toulouse
| | - Thi Ly Le
- CIRIMAT
- Université de Toulouse
- CNRS
- INPT
- UPS
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20
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Han H, Dufour P, Mhin S, Ryu JH, Tenailleau C, Guillemet-Fritsch S. Quasi-intrinsic colossal permittivity in Nb and In co-doped rutile TiO2 nanoceramics synthesized through a oxalate chemical-solution route combined with spark plasma sintering. Phys Chem Chem Phys 2015; 17:16864-75. [PMID: 26058428 DOI: 10.1039/c5cp02653a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nb and In co-doped rutile TiO2 nanoceramics (n-NITO) were successfully synthesized through a chemical-solution route combined with a low temperature spark plasma sintering (SPS) technique. The particle morphology and the microstructure of n-NITO compounds were nanometric in size. Various techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric (TG)/differential thermal analysis (DTA), Fourier transform infrared (FTIR), and Raman spectroscopy were used for the structural and compositional characterization of the synthesized compound. The results indicated that the as-synthesized n-NITO oxalate as well as sintered ceramic have a co-doped single phase of titanyl oxalate and rutile TiO2, respectively. Broadband impedance spectroscopy revealed that novel colossal permittivity (CP) was achieved in n-NITO ceramics exhibiting excellent temperature-frequency stable CP (up to 10(4)) as well as low dielectric loss (∼5%). Most importantly, detailed impedance data analyses of n-NITO compared to microcrystalline NITO (μ-NITO) demonstrated that the origin of CP in NITO bulk nanoceramics might be related with the pinned electrons in defect clusters and not to extrinsic interfacial effects.
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Affiliation(s)
- HyukSu Han
- CNRS, Institut Carnot CIRIMAT, UMR CNRS-UPS-INP 5085, Université Paul-Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 9, France.
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21
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Marín L, Nanayakkara CE, Veyan JF, Warot-Fonrose B, Joulie S, Estève A, Tenailleau C, Chabal YJ, Rossi C. Enhancing the Reactivity of Al/CuO Nanolaminates by Cu Incorporation at the Interfaces. ACS Appl Mater Interfaces 2015; 7:11713-11718. [PMID: 25988997 DOI: 10.1021/acsami.5b02653] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In situ deposition of a thin (∼5 nm) layer of copper between Al and CuO layers is shown to increase the overall nanolaminate material reactivity. A combination of transmission electron microscopy imaging, in situ infrared spectroscopy, low energy ion scattering measurements, and first-principles calculations reveals that copper spontaneously diffuses into aluminum layers (substantially less in CuO layers). The formation of an interfacial Al:Cu alloy with melting temperature lower than pure Al metal is responsible for the enhanced reactivity, opening a route to controlling the stochiometry of the aluminum layer and increasing the reactivity of the nanoenergetic multilayer systems in general.
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Affiliation(s)
- Lorena Marín
- †LAAS-CNRS, 7 Avenue du colonel Roche, F-31077 Toulouse, France
- ⊥UPS, INSA, INP, ISAE, LAAS, Université de Toulouse, F-31062 Toulouse, France
| | - Charith E Nanayakkara
- #Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Jean-Francois Veyan
- #Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bénédicte Warot-Fonrose
- ‡CEMES-CNRS, 29, Rue Jeanne Marvig, F-31055 Toulouse, France
- ⊥UPS, INSA, INP, ISAE, LAAS, Université de Toulouse, F-31062 Toulouse, France
| | - Sébastien Joulie
- ‡CEMES-CNRS, 29, Rue Jeanne Marvig, F-31055 Toulouse, France
- ⊥UPS, INSA, INP, ISAE, LAAS, Université de Toulouse, F-31062 Toulouse, France
| | - Alain Estève
- †LAAS-CNRS, 7 Avenue du colonel Roche, F-31077 Toulouse, France
- ⊥UPS, INSA, INP, ISAE, LAAS, Université de Toulouse, F-31062 Toulouse, France
| | - Christophe Tenailleau
- §CIRIMAT-CNRS, 118 Route de Narbonne, F-31062 Toulouse Cedex 9, France
- ⊥UPS, INSA, INP, ISAE, LAAS, Université de Toulouse, F-31062 Toulouse, France
| | - Yves J Chabal
- #Department of Materials Science and Engineering, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Carole Rossi
- †LAAS-CNRS, 7 Avenue du colonel Roche, F-31077 Toulouse, France
- ⊥UPS, INSA, INP, ISAE, LAAS, Université de Toulouse, F-31062 Toulouse, France
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Bahrami M, Taton G, Conédéra V, Salvagnac L, Tenailleau C, Alphonse P, Rossi C. Magnetron Sputtered Al‐CuO Nanolaminates: Effect of Stoichiometry and Layers Thickness on Energy Release and Burning Rate. Propellants, Explosives, Pyrotechnics 2014. [DOI: 10.1002/prep.201300080] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mehdi Bahrami
- LAAS, CNRS, Université de Toulouse, 7 Avenue du Colonel Roche, 31400 Toulouse, France
| | - Guillaume Taton
- LAAS, CNRS, Université de Toulouse, 7 Avenue du Colonel Roche, 31400 Toulouse, France
| | - Véronique Conédéra
- LAAS, CNRS, Université de Toulouse, 7 Avenue du Colonel Roche, 31400 Toulouse, France
| | - Ludovic Salvagnac
- LAAS, CNRS, Université de Toulouse, 7 Avenue du Colonel Roche, 31400 Toulouse, France
| | | | - Pierre Alphonse
- CIRIMAT, UMR CNRS 5085, 118 Route de Narbonne, 31062 Toulouse Cedex 9, France
| | - Carole Rossi
- LAAS, CNRS, Université de Toulouse, 7 Avenue du Colonel Roche, 31400 Toulouse, France
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De Souza RA, Voisin C, Schraknepper H, Teusner M, Kessel M, Dufour P, Tenailleau C, Guillemet-Fritsch S. Complex diffusion behavior of oxygen in nanocrystalline BaTiO3 ceramics. Phys Chem Chem Phys 2014; 16:2568-75. [DOI: 10.1039/c3cp53979b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kwon J, Ducéré JM, Alphonse P, Bahrami M, Petrantoni M, Veyan JF, Tenailleau C, Estève A, Rossi C, Chabal YJ. Interfacial chemistry in Al/CuO reactive nanomaterial and its role in exothermic reaction. ACS Appl Mater Interfaces 2013; 5:605-613. [PMID: 23289538 DOI: 10.1021/am3019405] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Interface layers between reactive and energetic materials in nanolaminates or nanoenergetic materials are believed to play a crucial role in the properties of nanoenergetic systems. Typically, in the case of Metastable Interstitial Composite nanolaminates, the interface layer between the metal and oxide controls the onset reaction temperature, reaction kinetics, and stability at low temperature. So far, the formation of these interfacial layers is not well understood for lack of in situ characterization, leading to a poor control of important properties. We have combined in situ infrared spectroscopy and ex situ X-ray photoelectron spectroscopy, differential scanning calorimetry, and high resolution transmission electron microscopy, in conjunction with first-principles calculations to identify the stable configurations that can occur at the interface and determine the kinetic barriers for their formation. We find that (i) an interface layer formed during physical deposition of aluminum is composed of a mixture of Cu, O, and Al through Al penetration into CuO and constitutes a poor diffusion barrier (i.e., with spurious exothermic reactions at lower temperature), and in contrast, (ii) atomic layer deposition (ALD) of alumina layers using trimethylaluminum (TMA) produces a conformal coating that effectively prevents Al diffusion even for ultrathin layer thicknesses (∼0.5 nm), resulting in better stability at low temperature and reduced reactivity. Importantly, the initial reaction of TMA with CuO leads to the extraction of oxygen from CuO to form an amorphous interfacial layer that is an important component for superior protection properties of the interface and is responsible for the high system stability. Thus, while Al e-beam evaporation and ALD growth of an alumina layer on CuO both lead to CuO reduction, the mechanism for oxygen removal is different, directly affecting the resistance to Al diffusion. This work reveals that it is the nature of the monolayer interface between CuO and alumina/Al rather than the thickness of the alumina layer that controls the kinetics of Al diffusion, underscoring the importance of the chemical bonding at the interface in these energetic materials.
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Affiliation(s)
- Jinhee Kwon
- Department of Materials Science and Engineering, the University of Texas at Dallas, Richardson, Texas 75080, United States
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Salek G, Guillemet-Fritsch S, Dufour P, Tenailleau C. A Simple Preparation Process of Pure Mn3-Xcoxo4 (X= 1, 1.5 and 2) Desert Rose-Like Nanoparticles and Their Optical Properties. ACTA ACUST UNITED AC 2012. [DOI: 10.5539/ijc.v4n6p44] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Xia F, O'Neill B, Ngothai Y, Peak J, Tenailleau C, Etschmann B, Qian G, Brugger J, Studer A, Olsen S, Pring A. A thermosyphon-driven hydrothermal flow-through cell forin situand time-resolved neutron diffraction studies. J Appl Crystallogr 2010. [DOI: 10.1107/s0021889810006990] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A flow-through cell for hydrothermal phase transformation studies byin situand time-resolved neutron diffraction has been designed and constructed. The cell has a large internal volume of 320 ml and can operate at temperatures up to 573 K under autogenous vapor pressures (ca8.5 × 106 Pa). The fluid flow is driven by a thermosyphon, which is achieved by the proper design of temperature difference around the closed loop. The main body of the cell is made of stainless steel (316 type), but the sample compartment is constructed from non-scattering Ti–Zr alloy. The cell has been successfully commissioned on Australia's new high-intensity powder diffractometer WOMBAT at the Australian Nuclear Science and Technology Organization, using two simple phase transformation reactions from KAlSi2O6(leucite) to NaAlSi2O6·H2O (analcime) and then back from NaAlSi2O6·H2O to KAlSi2O6as examples. The demonstration proved that the cell is an excellent tool for probing hydrothermal crystallization. By collecting diffraction data every 5 min, it was clearly seen that KAlSi2O6was progressively transformed to NaAlSi2O6·H2O in a sodium chloride solution, and the produced NaAlSi2O6·H2O was progressively transformed back to KAlSi2O6in a potassium carbonate solution.
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Abstract
Pure, large-area, and aligned CuO nanowires are realized from copper thin film deposited onto silicon substrate by thermal annealing under a N2/O2 gas flow. The as-prepared pure and vertically aligned CuO nanowires along silicon substrate have several advantages over previous approaches such as easier integration into silicon based micro systems, more convenience for subsequent elements deposition, and higher heat of reaction for realization of CuO/Al based nano energetic materials. It is found that long and aligned nanowires can only be formed within a narrow temperature range from 400 to 500 degrees C. A N2/O2 gas flow rate of 400/100 sccm is moderate for realizing long and aligned CuO nanowires. The synthesized nanowires and thin film beneath the nanowires are confirmed to be pure CuO using X-ray diffraction. The CuO nanowires are found to be bicrystal by high resolution transmission electron microscopy.
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Affiliation(s)
- Kaili Zhang
- LAAS-CNRS, Université de Toulouse, 7Ave du Colonel Roche, 31077 Toulouse Cedex 4, France
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Zhang K, Rossi C, Alphonse P, Tenailleau C. NiO nanostructured honeycomb realized by annealing Ni film deposited on silicon. J Nanosci Nanotechnol 2008; 8:5903-5907. [PMID: 19198324 DOI: 10.1166/jnn.2008.233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Two-dimensional nanostructures have various interesting applications due to their large surface areas. In this study, we propose a simple approach to synthesize two-dimensional NiO nano honeycomb by thermal annealing of Ni thin film deposited onto silicon substrate by thermal evaporation. The effects on the nano honeycomb morphology of the annealing temperature and time are investigated. Because the NiO nano honeycomb is realized onto silicon substrate, a basic material for microelectronics and micro-system, this will probably open the door to integrate the nano honeycomb into micro-system, thus leading to nano based functional devices. The as-synthesized NiO nano honeycomb is characterized by SEM, XRD, and surface area measurement.
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Affiliation(s)
- Kaili Zhang
- LAAS-CNRS, Université de Toulouse, 7 ave du colonel Roche, 31077 Toulouse Cedex 4, France
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Tenailleau C, Allix M, Claridge JB, Hervieu M, Thomas MF, Hirst JP, Rosseinsky MJ. Modular Construction of Oxide Structures—Compositional Control of Transition Metal Coordination Environments. J Am Chem Soc 2008; 130:7570-83. [PMID: 18505254 DOI: 10.1021/ja077762f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christophe Tenailleau
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
| | - Mathieu Allix
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
| | - John B. Claridge
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
| | - Maryvonne Hervieu
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
| | - Michael F. Thomas
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
| | - James P. Hirst
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
| | - Matthew J. Rosseinsky
- Department of Chemistry, University of Liverpool, Liverpool, L69 7ZD, U.K., Laboratoire CRISMAT-ENSICAEN, UMR6508, 6 Bd du Maréchal Juin, 14050 Caen Cedex, France, and Department of Physics, University of Liverpool, Liverpool, L69 7ZE, U.K
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Zhang K, Rossi C, Alphonse P, Tenailleau C. Synthesis of NiO nanowalls by thermal treatment of Ni film deposited onto a stainless steel substrate. Nanotechnology 2008; 19:155605. [PMID: 21825619 DOI: 10.1088/0957-4484/19/15/155605] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Two-dimensional nanostructures have a variety of applications due to their large surface areas. In this study, the authors present a simple and convenient method to realize two-dimensional NiO nanowalls by thermal treatment of a Ni thin film deposited by sputtering onto a stainless steel substrate. The substrate surface area is supposed to be significantly increased by creating nanowalls. The effects on the nanowall morphology of the thermal treatment temperature and duration are investigated. A mechanism based on the surface diffusion of Ni(2+) ions from the Ni base film is then proposed for the growth of the NiO nanowalls. The as-synthesized NiO nanowalls are characterized by scanning electron microscopy, energy-dispersive x-ray analysis, x-ray diffraction, transmission electron microscopy and high resolution transmission electron microscopy.
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Affiliation(s)
- Kaili Zhang
- LAAS-CNRS, Université de Toulouse, 7 ave du colonel Roche, F-31077 Toulouse Cedex 4, France
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Tenailleau C, Suard E, Rodriguez-Carvajal J, Gibaud A, Lacorre P. Effect of doping and temperature on the crystal structure of (V1−xMox)2O3 above and below the metal/insulator transition. J SOLID STATE CHEM 2003. [DOI: 10.1016/s0022-4596(03)00295-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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