181 results found
Ferraro C, Garcia-Tunon E, Barg S, et al., 2018, SiC porous structures obtained with innovative shaping technologies, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 38, Pages: 823-835, ISSN: 0955-2219
Machado GC, Garcia-Tunon E, Bell RV, et al., 2018, Calcium phosphate substrates with emulsion-derived roughness: Processing, characterisation and interaction with human mesenchymal stem cells, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 38, Pages: 949-961, ISSN: 0955-2219
Zhang Y, Peng J, Li M, et al., 2018, Bioinspired Supertough Graphene Fiber through Sequential Interfacial Interactions., ACS Nano
Natural nacre exhibits extraordinary functional and structural diversity, combining high strength and toughness. The mechanical properties of nacre are attributed to (i) a highly arranged hierarchical layered structure of inorganic minerals (95 vol %) containing a small amount only of organic materials (5 vol %), (ii) abundant synergistic interfacial interactions, and (iii) formation under ambient temperature. Herein, inspired by these three design principles originating from natural nacre, the supertough bioinspired graphene-based nanocomposite fibers (BGNFs) are prepared under room temperature via sequential interfacial interactions of ionic bonding and π-π interactions. The resultant synergistic effect leads to a super toughness of 18.7 MJ m-3 as well as a high tensile strength of 740.1 MPa. In addition, the electrical conductivity of these supertough BGNFs is as high as 384.3 S cm-1. They can retain almost 80% of this conductivity even after 1000 cycles of loading-unloading testing, which makes these BGNFs promising candidates for application in flexible and stable electrical devices, such as strain sensors and actuators.
Feilden E, Giovannini T, Ni N, et al., 2017, Micromechanical strength of individual Al2O3 platelets, SCRIPTA MATERIALIA, Vol: 131, Pages: 55-58, ISSN: 1359-6462
Garcia-Tunon E, Feilden E, Zheng H, et al., 2017, Graphene Oxide: An All-in-One Processing Additive for 3D Printing, ACS APPLIED MATERIALS & INTERFACES, Vol: 9, Pages: 32977-32989, ISSN: 1944-8244
Garcia-Tunon E, Machado GC, Schneider M, et al., 2017, Complex ceramic architectures by directed assembly of 'responsive' particles, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 37, Pages: 199-211, ISSN: 0955-2219
Goyos-Ball L, Fernandez E, Diaz R, et al., 2017, Osseous differentiation on freeze casted 10CeTZP-Al2O3 structures, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 37, Pages: 5009-5016, ISSN: 0955-2219
Goyos-Ball L, Garcia-Tunon E, Fernandez-Garcia E, et al., 2017, Mechanical and biological evaluation of 3D printed 10CeTZP-Al2O3 structures, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 37, Pages: 3151-3158, ISSN: 0955-2219
Ni H, Xu F, Tomsia AP, et al., 2017, Robust Bioinspired Graphene Film via pi-pi Cross-linking, ACS APPLIED MATERIALS & INTERFACES, Vol: 9, Pages: 24987-24992, ISSN: 1944-8244
Olowojoba GB, Kopsidas S, Eslava S, et al., 2017, A facile way to produce epoxy nanocomposites having excellent thermal conductivity with low contents of reduced graphene oxide, JOURNAL OF MATERIALS SCIENCE, Vol: 52, Pages: 7323-7344, ISSN: 0022-2461
Pelissari PIBGB, Bouville F, Pandolfelli VC, et al., 2017, Nacre-like ceramic refractories for high temperature applications, Journal of the European Ceramic Society, Vol: 38, Pages: 2186-2193, ISSN: 0955-2219
High-temperature ceramics, so-called refractories, are widely used for the manufacturing of metals, for energy generation and aerospace applications. Refractories are usually strong and stiff but fragile due to the lack of plastic deformation and other intrinsic toughening mechanisms. This inherent brittleness limits their use in applications where catastrophic failure is not tolerated. The present work reports the design and fabrication of refractories with a bio inspired nacre-like microstructure comprising aligned alumina platelets, separated by an aluminium borate interphase, obtained through transient liquid phase sintering. The bioinspired composites exhibit high strength, 672 MPa, toughness, 7.4 MPa m1/2, and stable crack propagation at high temperatures, above 600 °C, due to the aluminium borate interlayer. This makes nacre-like ceramic refractories sintered with a transient liquid phase good candidate for high temperature applications, competing favourably with ceramic matrix composites and following a simpler and cheaper processing route.
Picot OT, Rocha VG, Ferraro C, et al., 2017, Using graphene networks to build bioinspired self-monitoring ceramics, NATURE COMMUNICATIONS, Vol: 8, ISSN: 2041-1723
Rocha VG, Garcia-Tunon E, Botas C, et al., 2017, Multimaterial 3D Printing of Graphene-Based Electrodes for Electrochemical Energy Storage Using Thermoresponsive Inks, ACS APPLIED MATERIALS & INTERFACES, Vol: 9, Pages: 37136-37145, ISSN: 1944-8244
The current lifestyles, increasing population, and limited resources result in energy research being at the forefront of worldwide grand challenges, increasing the demand for sustainable and more efficient energy devices. In this context, additive manufacturing brings the possibility of making electrodes and electrical energy storage devices in any desired three-dimensional (3D) shape and dimensions, while preserving the multifunctional properties of the active materials in terms of surface area and conductivity. This paves the way to optimized and more efficient designs for energy devices. Here, we describe how three-dimensional (3D) printing will allow the fabrication of bespoke devices, with complex geometries, tailored to fit specific requirements and applications, by designing water-based thermoresponsive inks to 3D-print different materials in one step, for example, printing the active material precursor (reduced chemically modified graphene (rCMG)) and the current collector (copper) for supercapacitors or anodes for lithium-ion batteries. The formulation of thermoresponsive inks using Pluronic F127 provides an aqueous-based, robust, flexible, and easily upscalable approach. The devices are designed to provide low resistance interface, enhanced electrical properties, mechanical performance, packing of rCMG, and low active material density while facilitating the postprocessing of the multicomponent 3D-printed structures. The electrode materials are selected to match postprocessing conditions. The reduction of the active material (rCMG) and sintering of the current collector (Cu) take place simultaneously. The electrochemical performance of the rCMG-based self-standing binder-free electrode and the two materials coupled rCMG/Cu printed electrode prove the potential of multimaterial printing in energy applications.
Al Nasiri N, Saiz E, Giuliani F, et al., 2016, Grain bridging locations of monolithic silicon carbide by means of focused ion beam milling technique, MATERIALS LETTERS, Vol: 173, Pages: 214-218, ISSN: 0167-577X
Chabi S, Rocha VG, Garcia-Tunon E, et al., 2016, Ultralight, Strong, Three-Dimensional SiC Structures, ACS NANO, Vol: 10, Pages: 1871-1876, ISSN: 1936-0851
D'Elia E, Eslava S, Miranda M, et al., 2016, Autonomous self-healing structural composites with bio-inspired design, SCIENTIFIC REPORTS, Vol: 6, ISSN: 2045-2322
Eslava S, Reynal A, Rocha VG, et al., 2016, Using graphene oxide as a sacrificial support of polyoxotitanium clusters to replicate its two-dimensionality on pure titania photocatalysts, JOURNAL OF MATERIALS CHEMISTRY A, Vol: 4, Pages: 7200-7206, ISSN: 2050-7488
Feilden E, Blanca EG-T, Giuliani F, et al., 2016, Robocasting of structural ceramic parts with hydrogel inks, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 36, Pages: 2525-2533, ISSN: 0955-2219
Al Nasiri N, Ni N, Saiz E, et al., 2015, Effect of microstructure and grain boundary chemistry on slow crack growth in silicon carbide at ambient conditions, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 35, Pages: 2253-2260, ISSN: 0955-2219
Al Nasiri N, Saiz E, Giuliani F, et al., 2015, Effect of microstructure and slow crack growth on lifetime prediction of monolithic silicon carbide, MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, Vol: 627, Pages: 290-295, ISSN: 0921-5093
Boix M, Eslava S, Machado GC, et al., 2015, ATR-FTIR measurements of albumin and fibrinogen adsorption: Inert versus calcium phosphate ceramics, JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A, Vol: 103, Pages: 3493-3502, ISSN: 1549-3296
Ferraro C, Garcia-Tunon E, Saiz E, 2015, A silicon carbide lollipop, Publisher: ELSEVIER SCI LTD
Menzel R, Barg S, Miranda M, et al., 2015, Joule Heating Characteristics of Emulsion-Templated Graphene Aerogels, ADVANCED FUNCTIONAL MATERIALS, Vol: 25, Pages: 28-35, ISSN: 1616-301X
Ni N, Barg S, Garcia-Tunon E, et al., 2015, Understanding Mechanical Response of Elastomeric Graphene Networks, SCIENTIFIC REPORTS, Vol: 5, ISSN: 2045-2322
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