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Marques SM, Rico P, Carvalho I, Gómez Ribelles JL, Fialho L, Lanceros-Méndez S, Henriques M, Carvalho S. MC3T3-E1 Cell Response to Ti1-xAgx and Ag-TiNx Electrodes Deposited on Piezoelectric Poly(vinylidene fluoride) Substrates for Sensor Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:4199-207. [PMID: 26840928 DOI: 10.1021/acsami.5b11922] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In the sensors field, titanium based coatings are being used for the acquisition/application of electrical signals from/to piezoelectric materials. In this particular case, sensors are used to detect dynamic mechanical loads at early stages after intervention of problems associated with prostheses implantation. The aim of this work is to select an adequate electrode for sensor applications capable, in an initial stage to avoid bone cell adhesion, but at a long stage, permit osteointegration and osteoinduction. This work reports on the evaluation of osteoblast MC3T3-E1 cells behavior in terms of proliferation, adhesion and long-term differentiation of two different systems used as sensor electrodes: Ti1-xAgx and Ag-TiNx deposited by d.c. and pulsed magnetron sputtering at room temperature on poly(vinylidene fluoride) (PVDF). The results indicated an improved effect of Ag-TiNx electrodes compared with Ti1-xAgx and TiN, in terms of diminished cell adhesion and proliferation at an initial cell culture stage. Nevertheless, when cell culture time is longer, cells grown onto Ag-TiNx electrodes are capable to proliferate and also differentiate at proper rates, indicating the suitability of this coating for sensor application in prostheses devices. Thus, the Ag-TiNx system was considered the most promising electrode for tissue engineering applications in the design of sensors for prostheses to detect dynamic mechanical loads.
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Affiliation(s)
- S M Marques
- GRF-CFUM, Physics Department, University of Minho , 4800-058 Guimarães, Portugal
| | - P Rico
- Center for Biomaterials and Tissue Engineering, CBIT, Universitat Politècnica de València , València, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , València, Spain
| | - I Carvalho
- GRF-CFUM, Physics Department, University of Minho , 4800-058 Guimarães, Portugal
| | - J L Gómez Ribelles
- Center for Biomaterials and Tissue Engineering, CBIT, Universitat Politècnica de València , València, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN) , València, Spain
| | - L Fialho
- GRF-CFUM, Physics Department, University of Minho , 4800-058 Guimarães, Portugal
| | - S Lanceros-Méndez
- BCMaterials, Parque Científico y Tecnológico de Bizkaia , 48160 Derio, Spain
| | | | - S Carvalho
- GRF-CFUM, Physics Department, University of Minho , 4800-058 Guimarães, Portugal
- SEG-CEMUC Mechanical Engineering Department, University of Coimbra , 3030-788 Coimbra, Portugal
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Chakravadhanula VSK, Mishra YK, Kotnur VG, Avasthi DK, Strunskus T, Zaporotchenko V, Fink D, Kienle L, Faupel F. Microstructural and plasmonic modifications in Ag-TiO2 and Au-TiO2 nanocomposites through ion beam irradiation. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1419-1431. [PMID: 25247124 PMCID: PMC4168693 DOI: 10.3762/bjnano.5.154] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/01/2014] [Indexed: 06/03/2023]
Abstract
The development of new fabrication techniques of plasmonic nanocomposites with specific properties is an ongoing issue in the plasmonic and nanophotonics community. In this paper we report detailed investigations on the modifications of the microstructural and plasmonic properties of metal-titania nanocomposite films induced by swift heavy ions. Au-TiO2 and Ag-TiO2 nanocomposite thin films with varying metal volume fractions were deposited by co-sputtering and were subsequently irradiated by 100 MeV Ag(8+) ions at various ion fluences. The morphology of these nanocomposite thin films before and after ion beam irradiation has been investigated in detail by transmission electron microscopy studies, which showed interesting changes in the titania matrix. Additionally, interesting modifications in the plasmonic absorption behavior for both Au-TiO2 and Ag-TiO2 nanocomposites were observed, which have been discussed in terms of ion beam induced growth of nanoparticles and structural modifications in the titania matrix.
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Affiliation(s)
- Venkata Sai Kiran Chakravadhanula
- Chair for Multicomponent Materials, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
| | - Yogendra Kumar Mishra
- Functional Nanomaterials, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
| | - Venkata Girish Kotnur
- Chair for Multicomponent Materials, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
| | - Devesh Kumar Avasthi
- Inter University Accelerator Center, Materials Science Group, P.O. Box: 10502, New Delhi, 110067, India
| | - Thomas Strunskus
- Chair for Multicomponent Materials, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
| | - Vladimir Zaporotchenko
- Chair for Multicomponent Materials, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
| | - Dietmar Fink
- Instituto da Fisica, Universidad Autonoma Metropolitana–Iztapalapa, Av. San Rafael Atlixco No. 186, Col. Vicentina, Delegacion Iztapalapa, Mexico D.F., 09340, Mexico
| | - Lorenz Kienle
- Synthesis and Real Structure, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
| | - Franz Faupel
- Chair for Multicomponent Materials, Institute for Materials Science, Christian Albrechts University Kiel, Kaiserstr. 2, Kiel, 24143, Germany
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Hedayati MK, Faupel F, Elbahri M. Review of Plasmonic Nanocomposite Metamaterial Absorber. MATERIALS (BASEL, SWITZERLAND) 2014; 7:1221-1248. [PMID: 28788511 PMCID: PMC5453083 DOI: 10.3390/ma7021221] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 01/28/2014] [Accepted: 02/07/2014] [Indexed: 01/28/2023]
Abstract
Plasmonic metamaterials are artificial materials typically composed of noble metals in which the features of photonics and electronics are linked by coupling photons to conduction electrons of metal (known as surface plasmon). These rationally designed structures have spurred interest noticeably since they demonstrate some fascinating properties which are unattainable with naturally occurring materials. Complete absorption of light is one of the recent exotic properties of plasmonic metamaterials which has broadened its application area considerably. This is realized by designing a medium whose impedance matches that of free space while being opaque. If such a medium is filled with some lossy medium, the resulting structure can absorb light totally in a sharp or broad frequency range. Although several types of metamaterials perfect absorber have been demonstrated so far, in the current paper we overview (and focus on) perfect absorbers based on nanocomposites where the total thickness is a few tens of nanometer and the absorption band is broad, tunable and insensitive to the angle of incidence. The nanocomposites consist of metal nanoparticles embedded in a dielectric matrix with a high filling factor close to the percolation threshold. The filling factor can be tailored by the vapor phase co-deposition of the metallic and dielectric components. In addition, novel wet chemical approaches are discussed which are bio-inspired or involve synthesis within levitating Leidenfrost drops, for instance. Moreover, theoretical considerations, optical properties, and potential application of perfect absorbers will be presented.
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Affiliation(s)
- Mehdi Keshavarz Hedayati
- Nanochemistry and Nanoengineering, Faculty of Engineering, Institute for Materials Science, Christian-Albrechts-Universität zu Kiel, Kaiserstrasse 2, Kiel 24143, Germany.
| | - Franz Faupel
- Chair for Multicomponent Materials, Faculty of Engineering, Institute for Materials Science, Christian-Albrechts-Universität zu Kiel, Kaiserstrasse 2, Kiel 24143, Germany.
| | - Mady Elbahri
- Nanochemistry and Nanoengineering, Faculty of Engineering, Institute for Materials Science, Christian-Albrechts-Universität zu Kiel, Kaiserstrasse 2, Kiel 24143, Germany.
- Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, Geesthacht 21502, Germany.
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Hrkac T, Röhl C, Podschun R, Zaporojtchenko V, Strunskus T, Papavlassopoulos H, Garbe-Schönberg D, Faupel F. Huge increase of therapeutic window at a bioactive silver/titania nanocomposite coating surface compared to solution. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2367-75. [DOI: 10.1016/j.msec.2013.01.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 01/30/2013] [Accepted: 01/31/2013] [Indexed: 12/31/2022]
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Chakravadhanula VSK, Kübel C, Hrkac T, Zaporojtchenko V, Strunskus T, Faupel F, Kienle L. Surface segregation in TiO2-based nanocomposite thin films. NANOTECHNOLOGY 2012; 23:495701. [PMID: 23150221 DOI: 10.1088/0957-4484/23/49/495701] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The morphology of nanocomposites plays a pivotal role in understanding their functionality and determines their capabilities for applications. The use of nanocomposite coatings requires a study of the size effects on their functional properties. Noble metal nanoparticles are promising candidates for nanocomposite thin film applications due to their antibacterial, plasmonic and photocatalytic properties. In this contribution, the morphology of Ag-TiO(2) and Au-TiO(2) nanocomposite thin films has been investigated experimentally using electron tomography in transmission electron microscopy in combination with UV/vis spectroscopy. Based on the additional 3D information obtained from tomography, we propose a two-step model towards the observed bimodal particle size in these nanocomposite thin films prepared by co-sputtering from two different sources. Furthermore, we show that the optical properties exhibit a well-defined relation with the morphology of the nanocomposite thin films. The present investigations demonstrate the potential of electron tomography for revealing the complex structure and formation processes of functional nanocomposites.
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Affiliation(s)
- Venkata Sai Kiran Chakravadhanula
- Institute for Materials Science, Synthesis and Real Structure, Faculty of Engineering, Christian Albrechts University of Kiel, Kiel, Germany
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