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Pajares-Chamorro N, Lensmire JM, Hammer ND, Hardy JW, Chatzistavrou X. Unraveling the mechanisms of inhibition of silver-doped bioactive glass-ceramic particles. J Biomed Mater Res A 2022; 111:975-994. [PMID: 36583930 DOI: 10.1002/jbm.a.37482] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 12/05/2022] [Accepted: 12/08/2022] [Indexed: 12/31/2022]
Abstract
Infections are a major concern in orthopedics. Antibacterial agents such as silver ions are of great interest as broad-spectrum biocides and have been incorporated into bioactive glass-ceramic particles to control the release of ions within a therapeutic concentration and provide tissue regenerative properties. In this work, the antibacterial capabilities of silver-doped bioactive glass (Ag-BG) microparticles were explored to reveal the unedited mechanisms of inhibition against methicillin-resistant Staphylococcus aureus (MRSA). The antibacterial properties were not limited to the delivery of silver ions but rather a combination of antibacterial degradation by-products. For example, nano-sized debris punctured holes in bacteria membranes, osmotic effects, and reactive oxygen species causing oxidative stress and almost 40% of the inhibition. Upon successive Ag-BG treatments, MRSA underwent phenotypic and genomic mutations which were not only insufficient to develop resistance but instead, the clones became more sensitive as the treatment was re-delivered. Additionally, the unprecedented restorative functionality of Ag-BG allowed the effective use of antibiotics that MRSA resists. The synergy mechanism was mainly identified for combinations targeting cell-wall activity and their action was proven in biofilm-like and virulent conditions. Unraveling these mechanisms may offer new insights into how to tailor healthcare materials to prevent or debilitate infections and join the fight against antibiotic resistance in clinical cases.
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Affiliation(s)
- Natalia Pajares-Chamorro
- Department of Chemical Engineering and Material Science, College of Engineering, Michigan State University, East Lansing, Michigan, USA
| | - Josh M Lensmire
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Neal D Hammer
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Jonathan W Hardy
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA.,Institute for Quantitative Health Science and Engineering (IQ), Michigan State University, East Lansing, Michigan, USA
| | - Xanthippi Chatzistavrou
- Department of Chemical Engineering and Material Science, College of Engineering, Michigan State University, East Lansing, Michigan, USA.,Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Zhao X, Hai Q, Shi M, Chen H, Li Y, Qi Y. An Improved Smart Meta-Superconductor MgB2. NANOMATERIALS 2022; 12:nano12152590. [PMID: 35957019 PMCID: PMC9370472 DOI: 10.3390/nano12152590] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/25/2022] [Accepted: 07/26/2022] [Indexed: 02/04/2023]
Abstract
Increasing and improving the critical transition temperature (TC), current density (JC) and the Meissner effect (HC) of conventional superconductors are the most important problems in superconductivity research, but progress has been slow for many years. In this study, by introducing the p-n junction nanostructured electroluminescent inhomogeneous phase with a red wavelength to realize energy injection, we found the improved property of smart meta-superconductors MgB2, the critical transition temperature TC increases by 0.8 K, the current density JC increases by 37%, and the diamagnetism of the Meissner effect HC also significantly improved, compared with pure MgB2. Compared with the previous yttrium oxide inhomogeneous phase, the p-n junction has a higher luminescence intensity, a longer stable life and simpler external field requirements. The coupling between superconducting electrons and surface plasmon polaritons may be explained by this phenomenon. The realization of smart meta-superconductor by the electroluminescent inhomogeneous phase provides a new way to improve the performance of superconductors.
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Badica P, Batalu ND, Chifiriuc MC, Burdusel M, Grigoroscuta MA, Aldica GV, Pasuk I, Kuncser A, Popa M, Agostino A, Operti L, Padhi SK, Bonino V, Truccato M. Sintered and 3D-Printed Bulks of MgB 2-Based Materials with Antimicrobial Properties. Molecules 2021; 26:molecules26196045. [PMID: 34641589 PMCID: PMC8512174 DOI: 10.3390/molecules26196045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 11/24/2022] Open
Abstract
Pristine high-density bulk disks of MgB2 with added hexagonal BN (10 wt.%) were prepared using spark plasma sintering. The BN-added samples are machinable by chipping them into desired geometries. Complex shapes of different sizes can also be obtained by the 3D printing of polylactic acid filaments embedded with MgB2 powder particles (10 wt.%). Our present work aims to assess antimicrobial activity quantified as viable cells (CFU/mL) vs. time of sintered and 3D-printed materials. In vitro antimicrobial tests were performed against the bacterial strains Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, Staphylococcus aureus ATCC 25923, Enterococcus faecium DSM 13590, and Enterococcus faecalis ATCC 29212; and the yeast strain Candida parapsilosis ATCC 22019. The antimicrobial effects were found to depend on the tested samples and microbes, with E. faecium being the most resistant and E. coli the most susceptible.
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Affiliation(s)
- Petre Badica
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
- Correspondence: (P.B.); (M.P.); Tel.: +40-21-3690185 (P.B.); +40-21-3690185 (M.P.)
| | - Nicolae Dan Batalu
- Faculty of Material Science and Engineering, University Politehnica of Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania;
| | - Mariana Carmen Chifiriuc
- Faculty of Biology and The Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
| | - Mihail Burdusel
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Mihai Alexandru Grigoroscuta
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Gheorghe Virgil Aldica
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Iuliana Pasuk
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Andrei Kuncser
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (I.P.); (A.K.)
| | - Marcela Popa
- Faculty of Biology and The Research Institute of the University of Bucharest (ICUB), University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
- Correspondence: (P.B.); (M.P.); Tel.: +40-21-3690185 (P.B.); +40-21-3690185 (M.P.)
| | - Angelo Agostino
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Lorenza Operti
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Santanu Kumar Padhi
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
| | - Valentina Bonino
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Marco Truccato
- Physics and Chemistry Departments, University of Turin, 1-7 Via Pietro Giuria, 10125 Turin, Italy; (A.A.); (L.O.); (S.K.P.); (V.B.); (M.T.)
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Padhi SK, Baglieri N, Bonino V, Agostino A, Operti L, Batalu ND, Chifiriuc MC, Popa M, Burdusel M, Grigoroscuta MA, Aldica GV, Radu D, Badica P, Truccato M. Antimicrobial Activity of MgB 2 Powders Produced via Reactive Liquid Infiltration Method. Molecules 2021; 26:4966. [PMID: 34443553 PMCID: PMC8399391 DOI: 10.3390/molecules26164966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 12/05/2022] Open
Abstract
We report for the first time on the antimicrobial activity of MgB2 powders produced via the Reactive Liquid Infiltration (RLI) process. Samples with MgB2 wt.% ranging from 2% to 99% were obtained and characterized, observing different levels of grain aggregation and of impurity phases. Their antimicrobial activity was tested against Staphylococcus aureus ATCC BAA 1026, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, and Candida albicans ATCC 10231. A general correlation is observed between the antibacterial activity and the MgB2 wt.%, but the sample microstructure also appears to be very important. RLI-MgB2 powders show better performances compared to commercial powders against microbial strains in the planktonic form, and their activity against biofilms is also very similar.
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Affiliation(s)
- Santanu Kumar Padhi
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Nicoletta Baglieri
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Valentina Bonino
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Angelo Agostino
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Lorenza Operti
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
| | - Nicolae Dan Batalu
- Metallic Materials Science, Physical Metallurgy Department, Faculty of Materials Science and Engineering, University Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania;
| | - Mariana Carmen Chifiriuc
- Faculty of Biology, Research Institute of the University of Bucharest (ICUB), University of Bucharest, Spl. Independentei 91-95, 050095 Bucharest, Romania; (M.C.C.); (M.P.)
- Academy of Romanian Scientists, 050094 Bucharest, Romania
| | - Marcela Popa
- Faculty of Biology, Research Institute of the University of Bucharest (ICUB), University of Bucharest, Spl. Independentei 91-95, 050095 Bucharest, Romania; (M.C.C.); (M.P.)
| | - Mihail Burdusel
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Mihai Alexandru Grigoroscuta
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Gheorghe Virgil Aldica
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Dana Radu
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Petre Badica
- National Institute of Materials Physics, Street Atomistilor 405A, 077125 Magurele, Romania; (M.B.); (M.A.G.); (G.V.A.); (D.R.)
| | - Marco Truccato
- Physics and Chemistry Departments, University of Turin, Via P. Giuria 1-7, 10125 Turin, Italy; (S.K.P.); (N.B.); (V.B.); (A.A.); (L.O.)
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Antibacterial composite coatings of MgB 2 powders embedded in PVP matrix. Sci Rep 2021; 11:9591. [PMID: 33953282 PMCID: PMC8100140 DOI: 10.1038/s41598-021-88885-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 04/07/2021] [Indexed: 12/12/2022] Open
Abstract
Three commercial powders of MgB2 were tested in vitro by MTS and LDH cytotoxicity tests on the HS27 dermal cell line. Depending on powders, the toxicity concentrations were established in the range of 8.3–33.2 µg/ml. The powder with the lowest toxicity limit was embedded into polyvinylpyrrolidone (PVP), a biocompatible and biodegradable polymer, for two different concentrations. The self-replenishing MgB2-PVP composite materials were coated on substrate materials (plastic foil of the reservoir and silicon tubes) composing a commercial urinary catheter. The influence of the PVP-reference and MgB2-PVP novel coatings on the bacterial growth of Staphylococcus aureus ATCC 25923, Enterococcus faecium DMS 13590, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, in planktonic and biofilm state was assessed in vitro at 6, 24, and 48 h of incubation time. The MgB2-PVP coatings are efficient both against planktonic microbes and microbial biofilms. Results open promising applications for the use of MgB2 in the design of anti-infective strategies for different biomedical devices and systems.
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Abhinandan R, Pranav Adithya S, Saleth Sidharthan D, Balagangadharan K, Selvamurugan N. Synthesis and characterization of magnesium diboride nanosheets in alginate/polyvinyl alcohol scaffolds for bone tissue engineering. Colloids Surf B Biointerfaces 2021; 203:111771. [PMID: 33894648 DOI: 10.1016/j.colsurfb.2021.111771] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/10/2021] [Accepted: 04/14/2021] [Indexed: 01/13/2023]
Abstract
Boride, which belongs to the distinct category of ceramic materials, has attracted significant attention in tissue engineering applications. Magnesium diboride (MgB2) consists of a plane of magnesium atoms sandwiched between the layers of boron. Even though MgB2 showed its role in various applications, its effect on osteogenesis has not yet been investigated. In this study, we synthesized MgB2 nanosheets (MgB2NS), a new class of 2D-nanoscale structures, by the ultrasonication exfoliation method and incorporated them into a polymeric mixture of alginate (Alg) and polyvinyl alcohol (PVA) by the freeze-drying procedure. The synthesized scaffolds (Alg/PVA/MgB2NS) were characterized by SEM, XRD, FT-IR, protein adsorption, swelling, degradation, and biomineralization studies. These scaffolds were non-toxic to mouse mesenchymal stem cells (mMSCs). MgB2NS in the scaffolds enhanced osteoblast differentiation of mMSCs at the molecular level by the expression of Runx2 and osteoblast differentiation marker genes and at the cellular level by alkaline phosphatase, alizarin Red and von Kossa staining. Overall, our results showed that MgB2NS in Alg/PVA scaffolds have osteogenic potential, suggesting their possible use in bone tissue engineering applications.
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Affiliation(s)
- R Abhinandan
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - S Pranav Adithya
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - D Saleth Sidharthan
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - K Balagangadharan
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India
| | - N Selvamurugan
- Department of Biotechnology, College of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, 603 203, Tamil Nadu, India.
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Multifunctional bioactive glass and glass-ceramic biomaterials with antibacterial properties for repair and regeneration of bone tissue. Acta Biomater 2017; 59:2-11. [PMID: 28676434 DOI: 10.1016/j.actbio.2017.06.046] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 05/26/2017] [Accepted: 06/30/2017] [Indexed: 02/06/2023]
Abstract
Bioactive glasses (BGs) and related glass-ceramic biomaterials have been used in bone tissue repair for over 30years. Previous work in this field was comprehensively reviewed including by their inventor Larry Hench, and the key features and properties of BGs are well understood. More recently, attention has focused on their modification to further enhance the osteogenic behaviour, or further compositional changes that may introduce additional properties, such as antimicrobial activity. Evidence is emerging that BGs and related glass-ceramics may be modified in such a way as to simultaneously introduce more than one desirable property. The aim of this review is therefore to consider the evidence that these more recent inorganic modifications to glass and glass-ceramic biomaterials are effective, and whether or not these new compositions represent sufficiently versatile systems to underpin the development of a new generation of truly multifunctional biomaterials to address pressing clinical needs in orthopaedic and dental surgery. Indeed, a number of classical glass compositions exhibited antimicrobial activity, however the structural design and the addition of specific ions, i.e. Ag+, Cu+, and Sr2+, are able to impart a multifunctional character to these systems, through the combination of, for example, bioactivity with bactericidal activity. STATEMENT OF SIGNIFICANCE In this review we demonstrate the multifunctional potential of bioactive glasses and related glass-ceramics as biomaterials for orthopaedic and craniofacial/dental applications. Therefore, it considers the evidence that the more recent inorganic modifications to glass and glass-ceramic biomaterials are able to impart antimicrobial properties alongside the more classical bone bonding and osteoconduction. These properties are attracting a special attention nowadays that bacterial infections are an increasing challenge in orthopaedics. We also focus the manuscript on the versatility of these systems as a basis to underpin the development of a new generation of truly multifunctional biomaterials to address pressing clinical needs in orthopaedic, craniofacial and dental surgery.
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Guzman R, Fernandez-García E, Gutierrez-Gonzalez CF, Fernandez A, Lopez-Lacomba JL, Lopez-Esteban S. Biocompatibility assessment of spark plasma-sintered alumina-titanium cermets. J Biomater Appl 2015; 30:759-69. [PMID: 25956565 DOI: 10.1177/0885328215584858] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Alumina-titanium materials (cermets) of enhanced mechanical properties have been lately developed. In this work, physical properties such as electrical conductivity and the crystalline phases in the bulk material are evaluated. As these new cermets manufactured by spark plasma sintering may have potential application for hard tissue replacements, their biocompatibility needs to be evaluated. Thus, this research aims to study the cytocompatibility of a novel alumina-titanium (25 vol. % Ti) cermet compared to its pure counterpart, the spark plasma sintered alumina. The influence of the particular surface properties (chemical composition, roughness and wettability) on the pre-osteoblastic cell response is also analyzed. The material electrical resistance revealed that this cermet may be machined to any shape by electroerosion. The investigated specimens had a slightly undulated topography, with a roughness pattern that had similar morphology in all orientations (isotropic roughness) and a sub-micrometric average roughness. Differences in skewness that implied valley-like structures in the cermet and predominance of peaks in alumina were found. The cermet presented a higher surface hydrophilicity than alumina. Any cytotoxicity risk associated with the new materials or with the innovative manufacturing methodology was rejected. Proliferation and early-differentiation stages of osteoblasts were statistically improved on the composite. Thus, our results suggest that this new multifunctional cermet could improve current alumina-based biomedical devices for applications such as hip joint replacements.
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Affiliation(s)
- Rodrigo Guzman
- Instituto de Estudios Biofuncionales, Universidad Complutense de Madrid, Madrid, Spain
| | - Elisa Fernandez-García
- Nanomaterials & Nanotechnology Research Center (CINN), [Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA)], Asturias, Spain
| | - Carlos F Gutierrez-Gonzalez
- Nanomaterials & Nanotechnology Research Center (CINN), [Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA)], Asturias, Spain
| | - Adolfo Fernandez
- Nanomaterials & Nanotechnology Research Center (CINN), [Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Oviedo (UO), Principado de Asturias (PA)], Asturias, Spain
| | | | - Sonia Lopez-Esteban
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Sor Juana Inés de la Cruz, Madrid, Spain
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