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Duta L, Grumezescu V. The Effect of Doping on the Electrical and Dielectric Properties of Hydroxyapatite for Medical Applications: From Powders to Thin Films. Materials (Basel) 2024; 17:640. [PMID: 38591446 PMCID: PMC10856152 DOI: 10.3390/ma17030640] [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] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 04/10/2024]
Abstract
Recently, the favorable electrical properties of biomaterials have been acknowledged as crucial for various medical applications, including both bone healing and growth processes. This review will specifically concentrate on calcium phosphate (CaP)-based bioceramics, with a notable emphasis on hydroxyapatite (HA), among the diverse range of synthetic biomaterials. HA is currently the subject of extensive research in the medical field, particularly in dentistry and orthopedics. The existing literature encompasses numerous studies exploring the physical-chemical, mechanical, and biological properties of HA-based materials produced in various forms (i.e., powders, pellets, and/or thin films) using various physical and chemical vapor deposition techniques. In comparison, there is a relative scarcity of research on the electrical and dielectric properties of HA, which have been demonstrated to be essential for understanding dipole polarization and surface charge. It is noteworthy that these electrical and dielectric properties also offer valuable insights into the structure and functioning of biological tissues and cells. In this respect, electrical impedance studies on living tissues have been performed to assess the condition of cell membranes and estimate cell shape and size. The need to fill the gap and correlate the physical-chemical, mechanical, and biological characteristics with the electrical and dielectric properties could represent a step forward in providing new avenues for the development of the next-generation of high-performance HA-doped biomaterials for future top medical applications. Therefore, this review focuses on the electrical and dielectric properties of HA-based biomaterials, covering a range from powders and pellets to thin films, with a particular emphasis on the impact of the various dopants used. Therefore, it will be revealed that each dopant possesses unique properties capable of enhancing the overall characteristics of the produced structures. Considering that the electrical and dielectric properties of HA-based biomaterials have not been extensively explored thus far, the aim of this review is to compile and thoroughly discuss the latest research findings in the field, with special attention given to biomedical applications.
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Affiliation(s)
- Liviu Duta
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor St., 077125 Magurele, Romania
| | - Valentina Grumezescu
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor St., 077125 Magurele, Romania
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Akdag Z, Ulag S, Kalaskar DM, Duta L, Gunduz O. Advanced Applications of Silk-Based Hydrogels for Tissue Engineering: A Short Review. Biomimetics (Basel) 2023; 8:612. [PMID: 38132551 PMCID: PMC10742028 DOI: 10.3390/biomimetics8080612] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Silk has been consistently popular throughout human history due to its enigmatic properties. Today, it continues to be widely utilized as a polymer, having first been introduced to the textile industry. Furthermore, the health sector has also integrated silk. The Bombyx mori silk fibroin (SF) holds the record for being the most sustainable, functional, biocompatible, and easily produced type among all available SF sources. SF is a biopolymer approved by the FDA due to its high biocompatibility. It is versatile and can be used in various fields, as it is non-toxic and has no allergenic effects. Additionally, it enhances cell adhesion, adaptation, and proliferation. The use of SF has increased due to the rapid advancement in tissue engineering. This review comprises an introduction to SF and an assessment of the relevant literature using various methods and techniques to enhance the tissue engineering of SF-based hydrogels. Consequently, the function of SF in skin tissue engineering, wound repair, bone tissue engineering, cartilage tissue engineering, and drug delivery systems is therefore analysed. The potential future applications of this functional biopolymer for biomedical engineering are also explored.
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Affiliation(s)
- Zekiye Akdag
- Center for Nanotechnology Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34890, Turkey;
| | - Songul Ulag
- Division of Surgery Interventional Science, University College London, Royal National Orthopaedic Hospital, UCL Institute of Orthopaedic Musculoskeletal Science, Stanmore, London HA7 4LP, UK; (S.U.); (D.M.K.)
| | - Deepak M. Kalaskar
- Division of Surgery Interventional Science, University College London, Royal National Orthopaedic Hospital, UCL Institute of Orthopaedic Musculoskeletal Science, Stanmore, London HA7 4LP, UK; (S.U.); (D.M.K.)
- Spinal Surgery Unit, Royal National Orthopaedic Hospital NHS Trust, Stanmore, London HA7 4LP, UK
| | - Liviu Duta
- Lasers Department, National Institute for Laser, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, Romania
| | - Oguzhan Gunduz
- Center for Nanotechnology Biomaterials Application and Research (NBUAM), Marmara University, Istanbul 34890, Turkey;
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Puiu RA, Bîrcă AC, Grumezescu V, Duta L, Oprea OC, Holban AM, Hudiță A, Gălățeanu B, Balaure PC, Grumezescu AM, Andronescu E. Multifunctional Polymeric Biodegradable and Biocompatible Coatings Based on Silver Nanoparticles: A Comparative In Vitro Study on Their Cytotoxicity towards Cancer and Normal Cell Lines of Cytostatic Drugs versus Essential-Oil-Loaded Nanoparticles and on Their Antimicrobial and Antibiofilm Activities. Pharmaceutics 2023; 15:1882. [PMID: 37514068 PMCID: PMC10385235 DOI: 10.3390/pharmaceutics15071882] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/30/2023] Open
Abstract
We report on a comparative in vitro study of selective cytotoxicity against MCF7 tumor cells and normal VERO cells tested on silver-based nanocoatings synthesized by the matrix-assisted pulsed laser evaporation (MAPLE) technique. Silver nanoparticles (AgNPs) were loaded with five representative cytostatic drugs (i.e., doxorubicin, fludarabine, paclitaxel, gemcitabine, and carboplatin) and with five essential oils (EOs) (i.e., oregano, rosemary, ginger, basil, and thyme). The as-obtained coatings were characterized by X-ray diffraction, thermogravimetry coupled with differential scanning calorimetry, Fourier-transform IR spectroscopy, IR mapping, and scanning electron microscopy. A screening of the impact of the prepared nanocoatings on the MCF7 tumor and normal VERO cell lines was achieved by means of cell viability MTT and cytotoxicity LDH assays. While all nanocoatings loaded with antitumor drugs exhibited powerful cytotoxic activity against both the tumor and the normal cells, those embedded with AgNPs loaded with rosemary and thyme EOs showed remarkable and statistically significant selective cytotoxicity against the tested cancercells. The EO-loaded nanocoatings were tested for antimicrobial and antibiofilm activity against Staphylococcus aureus, Escherichia coli, and Candida albicans. For all studied pathogens, the cell viability, assessed by counting the colony-forming units after 2 and 24 h, was significantly decreased by all EO-based nanocoatings, while the best antibiofilm activity was evidenced by the nanocoatings containing ginger and thyme EOs.
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Affiliation(s)
- Rebecca Alexandra Puiu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Alexandra Cătălina Bîrcă
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, Romania
| | - Liviu Duta
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, 077125 Magurele, Romania
| | - Ovidiu Cristian Oprea
- Department of Inorganic Chemistry, Physical Chemistry and Electrochemistry, Politehnica University of Bucharest, 011061 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
| | - Alina Maria Holban
- Department of Microbiology and Immunology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei Street, 077206 Bucharest, Romania
| | - Ariana Hudiță
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Bianca Gălățeanu
- Department of Biochemistry and Molecular Biology, University of Bucharest, 050095 Bucharest, Romania
| | - Paul Cătălin Balaure
- Department of Organic Chemistry, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
- Research Institute of the University of Bucharest-ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Ecaterina Andronescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
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Duta L, Grumezescu V. Editorial: Calcium phosphates of synthetic and natural origin: current status and future challenges. Front Bioeng Biotechnol 2023; 11:1237272. [PMID: 37397957 PMCID: PMC10313184 DOI: 10.3389/fbioe.2023.1237272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 07/04/2023] Open
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Dorcioman G, Grumezescu V, Stan GE, Chifiriuc MC, Gradisteanu GP, Miculescu F, Matei E, Popescu-Pelin G, Zgura I, Craciun V, Oktar FN, Duta L. Hydroxyapatite Thin Films of Marine Origin as Sustainable Candidates for Dental Implants. Pharmaceutics 2023; 15:pharmaceutics15041294. [PMID: 37111781 PMCID: PMC10142946 DOI: 10.3390/pharmaceutics15041294] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 03/28/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Novel biomaterials with promising bone regeneration potential, derived from rich, renewable, and cheap sources, are reported. Thus, thin films were synthesized from marine-derived (i.e., from fish bones and seashells) hydroxyapatite (MdHA) by pulsed laser deposition (PLD) technique. Besides the physical-chemical and mechanical investigations, the deposited thin films were also evaluated in vitro using dedicated cytocompatibility and antimicrobial assays. The morphological examination of MdHA films revealed the fabrication of rough surfaces, which were shown to favor good cell adhesion, and furthermore could foster the in-situ anchorage of implants. The strong hydrophilic behavior of the thin films was evidenced by contact angle (CA) measurements, with values in the range of 15-18°. The inferred bonding strength adherence values were superior (i.e., ~49 MPa) to the threshold established by ISO regulation for high-load implant coatings. After immersion in biological fluids, the growth of an apatite-based layer was noted, which indicated the good mineralization capacity of the MdHA films. All PLD films exhibited low cytotoxicity on osteoblast, fibroblast, and epithelial cells. Moreover, a persistent protective effect against bacterial and fungal colonization (i.e., 1- to 3-log reduction of E. coli, E. faecalis, and C. albicans growth) was demonstrated after 48 h of incubation, with respect to the Ti control. The good cytocompatibility and effective antimicrobial activity, along with the reduced fabrication costs from sustainable sources (available in large quantities), should, therefore, recommend the MdHA materials proposed herein as innovative and viable solutions for the development of novel coatings for metallic dental implants.
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Affiliation(s)
- Gabriela Dorcioman
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania
| | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania
| | - George E Stan
- National Institute of Materials Physics, 077125 Magurele, Romania
| | - Mariana Carmen Chifiriuc
- Department of Microbiology, Faculty of Biology, University of Bucharest, 060101 Bucharest, Romania
- Earth, Environmental and Life Sciences Division, Research Institute of the University of Bucharest (ICUB), 060101 Bucharest, Romania
- Romanian Academy, 010071 Bucharest, Romania
| | - Gratiela Pircalabioru Gradisteanu
- Earth, Environmental and Life Sciences Division, Research Institute of the University of Bucharest (ICUB), 060101 Bucharest, Romania
- Academy of Romanian Scientists, 051157 Bucharest, Romania
| | - Florin Miculescu
- Faculty of Materials Science and Engineering, Politehnica University of Bucharest, 060042 Bucharest, Romania
| | - Elena Matei
- National Institute of Materials Physics, 077125 Magurele, Romania
| | - Gianina Popescu-Pelin
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania
| | - Irina Zgura
- National Institute of Materials Physics, 077125 Magurele, Romania
| | - Valentin Craciun
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania
| | - Faik Nüzhet Oktar
- Department of Bioengineering, Faculty of Engineering, University of Marmara, 34722 Istanbul, Turkey
- Advanced Nanomaterials Research Laboratory (ANRL), University of Marmara, 34722 Istanbul, Turkey
| | - Liviu Duta
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania
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Duta L, Dorcioman G, Grumezescu V. A Review on Biphasic Calcium Phosphate Materials Derived from Fish Discards. Nanomaterials (Basel) 2021; 11:2856. [PMID: 34835621 PMCID: PMC8620776 DOI: 10.3390/nano11112856] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 12/28/2022]
Abstract
This review summarizes the results reported on the production of biphasic calcium phosphate (BCP) materials derived from fish wastes (i.e., heads, bones, skins, and viscera), known as fish discards, and offers an in-depth discussion on their promising potential for various applications in many fields, especially the biomedical one. Thus, considerable scientific and technological efforts were recently focused on the capability of these sustainable materials to be transformed into economically attractive and highly valuable by-products. As a consequence of using these wastes, plenty of beneficial social effects, with both economic and environmental impact, will arise. In the biomedical field, there is a strong and continuous interest for the development of innovative solutions for healthcare improvement using alternative materials of biogenic origin. Thus, the orthopedic field has witnessed a significant development due to an increased demand for a large variety of implants, grafts, and/or scaffolds. This is mainly due to the increase of life expectancy and higher frequency of bone-associated injuries and diseases. As a consequence, the domain of bone-tissue engineering has expanded to be able to address a plethora of bone-related traumas and to deliver a viable and efficient substitute to allografts or autografts by combining bioactive materials and cells for bone-tissue ingrowth. Among biomaterials, calcium phosphate (CaP)-based bio-ceramics are widely used in medicine, in particular in orthopedics and dentistry, due to their excellent bioactive, osteoconductive, and osteointegrative characteristics. Recently, BCP materials (synthetic or natural), a class of CaP, which consist of a mixture of two phases, hydroxyapatite (HA) and beta tricalcium phosphate (β-TCP), in different concentrations, gained increased attention due to their superior overall performances as compared to single-phase formulations. Moreover, the exploitation of BCP materials from by-products of fish industry was reported to be a safe, cheap, and simple procedure. In the dedicated literature, there are many reviews on synthetic HA, β-TCP, or BCP materials, but to the best of our knowledge, this is the first collection of results on the effects of processing conditions on the morphological, compositional, structural, mechanical, and biological properties of the fish discard-derived BCPs along with the tailoring of their features for various applications.
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Affiliation(s)
| | | | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania; (L.D.); (G.D.)
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Popescu-Pelin G, Ristoscu C, Duta L, Pasuk I, Stan GE, Stan MS, Popa M, Chifiriuc MC, Hapenciuc C, Oktar FN, Nicarel A, Mihailescu IN. Fish Bone Derived Bi-Phasic Calcium Phosphate Coatings Fabricated by Pulsed Laser Deposition for Biomedical Applications. Mar Drugs 2020; 18:md18120623. [PMID: 33297346 PMCID: PMC7762251 DOI: 10.3390/md18120623] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 12/03/2020] [Indexed: 11/16/2022] Open
Abstract
We report on new biomaterials with promising bone and cartilage regeneration potential, from sustainable, cheap resources of fish origin. Thin films were fabricated from fish bone-derived bi-phasic calcium phosphate targets via pulsed laser deposition with a KrF * excimer laser source (λ = 248 nm, τFWHM ≤ 25 ns). Targets and deposited nanostructures were characterized by SEM and XRD, as well as by Energy Dispersive X-ray (EDX) and FTIR spectroscopy. Films were next assessed in vitro by dedicated cytocompatibility and antimicrobial assays. Films were Ca-deficient and contained a significant fraction of β-tricalcium phosphate apart from hydroxyapatite, which could contribute to an increased solubility and an improved biocompatibility for bone regeneration applications. The deposited structures were biocompatible as confirmed by the lack of cytotoxicity on human gingival fibroblast cells, making them promising for fast osseointegration implants. Pulsed laser deposition (PLD) coatings inhibited the microbial adhesion and/or the subsequent biofilm development. A persistent protection against bacterial colonization (Escherichia coli) was demonstrated for at least 72 h, probably due to the release of the native trace elements (i.e., Na, Mg, Si, and/or S) from fish bones. Progress is therefore expected in the realm of multifunctional thin film biomaterials, combining antimicrobial, anti-inflammatory, and regenerative properties for advanced implant coatings and nosocomial infections prevention applications.
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Affiliation(s)
- Gianina Popescu-Pelin
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Carmen Ristoscu
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Liviu Duta
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Iuliana Pasuk
- National Institute of Materials Physics, RO-077125 Magurele, Romania; (I.P.); (G.E.S.)
| | - George E. Stan
- National Institute of Materials Physics, RO-077125 Magurele, Romania; (I.P.); (G.E.S.)
| | - Miruna Silvia Stan
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, RO-050095 Bucharest, Romania;
| | - Marcela Popa
- Microbiology Department, Faculty of Biology, University of Bucharest, RO-060101 Bucharest, Romania; (M.P.); (M.C.C.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, RO-050095 Bucharest, Romania
| | - Mariana C. Chifiriuc
- Microbiology Department, Faculty of Biology, University of Bucharest, RO-060101 Bucharest, Romania; (M.P.); (M.C.C.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, RO-050095 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov Street no. 3, RO-050711 Bucharest, Romania
| | - Claudiu Hapenciuc
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
| | - Faik N. Oktar
- Department of Bioengineering, Faculty of Engineering, Goztepe Campus, University of Marmara, Kadikoy, 34722 Istanbul, Turkey;
- Center for Nanotechnology & Biomaterials Research, Goztepe Campus, University of Marmara, Kadikoy, 34722 Istanbul, Turkey
| | - Anca Nicarel
- Physics Department, University of Bucharest, RO-077125 Magurele, Romania;
| | - Ion N. Mihailescu
- National Institute for Lasers, Plasma and Radiation Physics, RO-077125 Magurele, Romania; (G.P.-P.); (C.R.); (L.D.); (C.H.)
- Correspondence: ; Tel.: +40-214-574-491
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Chioibasu D, Achim A, Popescu C, Stan GE, Pasuk I, Enculescu M, Iosub S, Duta L, Popescu A. Prototype Orthopedic Bone Plates 3D Printed by Laser Melting Deposition. Materials (Basel) 2019; 12:ma12060906. [PMID: 30893783 PMCID: PMC6471645 DOI: 10.3390/ma12060906] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 11/22/2022]
Abstract
Laser melting deposition is a 3D printing method usually studied for the manufacturing of machine parts in the industry. However, for the medical sector, although feasible, applications and actual products taking advantage of this technique are only scarcely reported. Therefore, in this study, Ti6Al4V orthopedic implants in the form of plates were 3D printed by laser melting deposition. Tuning of the laser power, scanning speed and powder feed rate was conducted, in order to obtain a continuous deposition after a single laser pass and to diminish unwanted blown powder, stuck in the vicinity of the printed elements. The fabrication of bone plates is presented in detail, putting emphasis on the scanning direction, which had a decisive role in the 3D printing resolution. The printed material was investigated by optical microscopy and was found to be dense, with no visible pores or cracks. The metallographic investigations and X-ray diffraction data exposed an unusual biphasic α+β structure. The energy dispersive X-ray spectroscopy revealed a composition very similar to the one of the starting powder material. The mapping of the surface showed a uniform distribution of elements, with no segregations or areas with deficient elemental distribution. The in vitro tests performed on the 3D printed Ti6Al4V samples in osteoblast-like cell cultures up to 7 days showed that the material deposited by laser melting is cytocompatible.
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Affiliation(s)
- Diana Chioibasu
- Center for Advanced Laser Technologies-CETAL, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.
- Faculty of Applied Sciences, Department of Physics University Politehnica of Bucharest, 060042 Bucharest, Romania.
| | - Alexandru Achim
- Center for Advanced Laser Technologies-CETAL, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.
| | - Camelia Popescu
- Center for Advanced Laser Technologies-CETAL, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.
| | - George E Stan
- National Institute of Materials Physics, 077125 Magurele, Ilfov, Romania.
| | - Iuliana Pasuk
- National Institute of Materials Physics, 077125 Magurele, Ilfov, Romania.
| | - Monica Enculescu
- National Institute of Materials Physics, 077125 Magurele, Ilfov, Romania.
| | - Stefana Iosub
- Center for Advanced Laser Technologies-CETAL, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.
| | - Liviu Duta
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.
| | - Andrei Popescu
- Center for Advanced Laser Technologies-CETAL, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Ilfov, Romania.
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Mihailescu IN, Bociaga D, Popescu-Pelin G, Stan GE, Duta L, Socol G, Chifiriuc MC, Bleotu C, Lazar V, Husanu MA, Zgura I, Miculescu F, Negut I, Hapenciuc C. Optimized silicon reinforcement of carbon coatings by pulsed laser technique for superior functional biomedical surfaces fabrication. Biofabrication 2017; 9:025029. [PMID: 28462910 DOI: 10.1088/1758-5090/aa7076] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We report on the fabrication of silicon-reinforced carbon (C:Si) structures by combinatorial pulsed laser deposition to search for the best design for a new generation of multi-functional coated implants. The synthesized films were characterized from the morphological, structural, compositional, mechanical and microbiological points of view. Scanning electron microscopy revealed the presence, on top of the deposited layers, of spheroid particulates with sizes in the micron range. No micro-cracks or delaminations were observed. Energy dispersive x-ray spectroscopy and grazing incidence x-ray diffraction pointed to the existence of a C to Si compositional gradient from one end of the film to the other. Raman investigation revealed a relatively high sp3 hybridization of up to 80% at 40-48 mm apart from the edge with higher C content. Si addition was demonstrated to significantly increase C:Si film bonding to the substrate, with values above the ISO threshold for coatings to be used in high-loading biomedical applications. Surface energy studies pointed to an increase in the hydrophilic character of the deposited structures along with Si content up to 52 mN m-1. In certain cases, the Si-reinforced C coatings elicited an antimicrobial biofilm action. The presence of Si was proven to be benign to HEp-2 cells of human origin, without interfering with their cellular cycle. On this basis, reliable C:Si structures with good adherence to the substrate and high efficiency against microbial biofilms can be developed for implant coatings and other advanced medical devices.
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Affiliation(s)
- I N Mihailescu
- National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania
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Camps I, Borlaf M, Colomer MT, Moreno R, Duta L, Nita C, Perez del Pino A, Logofatu C, Serna R, György E. Structure-property relationships for Eu doped TiO2 thin films grown by a laser assisted technique from colloidal sols. RSC Adv 2017. [DOI: 10.1039/c7ra05074g] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Highly photoluminescent Eu doped TiO2 layers prepared by laser-based technique from colloidal sols.
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Affiliation(s)
- I. Camps
- Instituto de Óptica
- Consejo Superior de Investigaciones Científicas (CSIC)
- 28006 Madrid
- Spain
| | - M. Borlaf
- Instituto de Cerámica y Vidrio
- Consejo Superior de Investigaciones Científicas (CSIC)
- Madrid
- Spain
| | - M. T. Colomer
- Instituto de Cerámica y Vidrio
- Consejo Superior de Investigaciones Científicas (CSIC)
- Madrid
- Spain
| | - R. Moreno
- Instituto de Cerámica y Vidrio
- Consejo Superior de Investigaciones Científicas (CSIC)
- Madrid
- Spain
| | - L. Duta
- National Institute for Lasers
- Plasma and Radiation Physics
- 077125 Bucharest V
- Romania
| | - C. Nita
- National Institute for Lasers
- Plasma and Radiation Physics
- 077125 Bucharest V
- Romania
| | - A. Perez del Pino
- Instituto de Ciencia de Materiales de Barcelona
- Consejo Superior de Investigaciones Científicas (ICMAB-CSIC)
- 08193 Bellaterra
- Spain
| | - C. Logofatu
- National Institute for Materials Physics
- 077125 Bucharest V
- Romania
| | - R. Serna
- Instituto de Óptica
- Consejo Superior de Investigaciones Científicas (CSIC)
- 28006 Madrid
- Spain
| | - E. György
- National Institute for Lasers
- Plasma and Radiation Physics
- 077125 Bucharest V
- Romania
- Instituto de Ciencia de Materiales de Barcelona
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Mihailescu N, Stan G, Duta L, Chifiriuc MC, Bleotu C, Sopronyi M, Luculescu C, Oktar F, Mihailescu I. Structural, compositional, mechanical characterization and biological assessment of bovine-derived hydroxyapatite coatings reinforced with MgF 2 or MgO for implants functionalization. Materials Science and Engineering: C 2016; 59:863-874. [DOI: 10.1016/j.msec.2015.10.078] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 09/14/2015] [Accepted: 10/26/2015] [Indexed: 01/12/2023]
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Popescu AC, Stan GE, Duta L, Nita C, Popescu C, Surdu VA, Husanu MA, Bita B, Ghisleni R, Himcinschi C, Craciun V. The Role of Ambient Gas and Pressure on the Structuring of Hard Diamond-Like Carbon Films Synthesized by Pulsed Laser Deposition. Materials 2015. [PMCID: PMC5455729 DOI: 10.3390/ma8063284] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hard carbon thin films were synthesized on Si (100) and quartz substrates by the Pulsed Laser Deposition (PLD) technique in vacuum or methane ambient to study their suitability for applications requiring high mechanical resistance. The deposited films’ surface morphology was investigated by scanning electron microscopy, crystalline status by X-ray diffraction, packing and density by X-ray reflectivity, chemical bonding by Raman and X-ray photoelectron spectroscopy, adherence by “pull-out” measurements and mechanical properties by nanoindentation tests. Films synthesized in vacuum were a-C DLC type, while films synthesized in methane were categorized as a-C:H. The majority of PLD films consisted of two layers: one low density layer towards the surface and a higher density layer in contact with the substrate. The deposition gas pressure played a crucial role on films thickness, component layers thickness ratio, structure and mechanical properties. The films were smooth, amorphous and composed of a mixture of sp3-sp2 carbon, with sp3 content ranging between 50% and 90%. The thickness and density of the two constituent layers of a film directly determined its mechanical properties.
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Affiliation(s)
- Andrei C. Popescu
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (L.D.); (C.N.); (C.P.); (V.C.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel./Fax: +40-21-457-4491
| | - George E. Stan
- National Institute of Materials Physics, 105bis Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (G.E.S.); (M.-A.H.)
| | - Liviu Duta
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (L.D.); (C.N.); (C.P.); (V.C.)
| | - Cristina Nita
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (L.D.); (C.N.); (C.P.); (V.C.)
| | - Camelia Popescu
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (L.D.); (C.N.); (C.P.); (V.C.)
| | - Vasile-Adrian Surdu
- Faculty of Applied Chemistry and Materials Science, University Politehnica from Bucharest, 1–7 Gh. Polizu Street, Bucharest RO-011061, Romania; E-Mail:
| | - Marius-Adrian Husanu
- National Institute of Materials Physics, 105bis Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (G.E.S.); (M.-A.H.)
| | - Bogdan Bita
- National Institute for Research and Development in Microtechnologies, 126A Erou Iancu Nicolae Street, Voluntari RO-077190, Romania; E-Mail:
| | - Rudy Ghisleni
- Laboratory of Advanced Materials Processing, EMPA-Swiss Federal Laboratories for Materials Science and Technology, 39 Feuerwerkerstrasse, Thun CH-3602, Switzerland; E-Mail:
| | - Cameliu Himcinschi
- Institute of Theoretical Physics, TU Bergakademie Freiberg, Freiberg D-09596, Germany; E-Mail:
| | - Valentin Craciun
- National Institute for Lasers, Plasma and Radiation Physics, 409 Atomistilor Street, Magurele RO-077125, Romania; E-Mails: (L.D.); (C.N.); (C.P.); (V.C.)
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Janković A, Eraković S, Ristoscu C, Mihailescu Serban N, Duta L, Visan A, Stan GE, Popa AC, Husanu MA, Luculescu CR, Srdić VV, Janaćković D, Mišković-Stanković V, Bleotu C, Chifiriuc MC, Mihailescu IN. Structural and biological evaluation of lignin addition to simple and silver-doped hydroxyapatite thin films synthesized by matrix-assisted pulsed laser evaporation. J Mater Sci Mater Med 2015; 26:5333. [PMID: 25578691 DOI: 10.1007/s10856-014-5333-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 07/28/2014] [Indexed: 06/04/2023]
Abstract
We report on thin film deposition by matrix-assisted pulsed laser evaporation of simple hydroxyapatite (HA) or silver (Ag) doped HA combined with the natural biopolymer organosolv lignin (Lig) (Ag:HA-Lig). Solid cryogenic target of aqueous dispersions of Ag:HA-Lig composite and its counterpart without silver (HA-Lig) were prepared for evaporation using a KrF* excimer laser source. The expulsed material was assembled onto TiO2/Ti substrata or silicon wafers and subjected to physical-chemical investigations. Smooth, uniform films adherent to substratum were observed. The chemical analyses confirmed the presence of the HA components, but also evidenced traces of Ag and Lig. Deposited HA was Ca deficient, which is indicative of a film with increased solubility. Recorded X-ray Diffraction patterns were characteristic for amorphous films. Lig presence in thin films was undoubtedly proved by both X-ray Photoelectron and Fourier Transform Infra-Red Spectroscopy analyses. The microbiological evaluation showed that the newly assembled surfaces exhibited an inhibitory activity both on the initial steps of biofilm forming, and on mature bacterial and fungal biofilm development. The intensity of the anti-biofilm activity was positively influenced by the presence of the Lig and/or Ag, in the case of Staphylococcus aureus, Pseudomonas aeruginosa and Candida famata biofilms. The obtained surfaces exhibited a low cytotoxicity toward human mesenchymal stem cells, being therefore promising candidates for fabricating implantable biomaterials with increased biocompatibility and resistance to microbial colonization and further biofilm development.
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Affiliation(s)
- A Janković
- Innovation Center, Faculty of Technology and Metallurgy, University of Belgrade, 11000, Belgrade, Serbia
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Datcu A, Duta L, Pérez del Pino A, Logofatu C, Luculescu C, Duta A, Perniu D, György E. One-step preparation of nitrogen doped titanium oxide/Au/reduced graphene oxide composite thin films for photocatalytic applications. RSC Adv 2015. [DOI: 10.1039/c5ra07853a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Titanium dioxide (TiO2) and TiO2/Au/reduced graphene oxide nanocomposite thin films were grown by ultraviolet matrix assisted pulsed laser evaporation in controlled O2 or N2 atmospheres.
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Affiliation(s)
- A. Datcu
- National Institute for Lasers
- Plasma and Radiation Physics
- 77125 Bucharest
- Romania
| | - L. Duta
- National Institute for Lasers
- Plasma and Radiation Physics
- 77125 Bucharest
- Romania
| | - A. Pérez del Pino
- Instituto de Ciencia de Materiales de Barcelona
- Consejo Superior de Investigaciones Científicas
- ICMAB-CSIC
- 08193 Bellaterra
- Spain
| | - C. Logofatu
- National Institute for Materials Physics
- 77125 Bucharest
- Romania
| | - C. Luculescu
- National Institute for Lasers
- Plasma and Radiation Physics
- 77125 Bucharest
- Romania
| | - A. Duta
- Transilvania University of Brasov
- Brasov
- Romania
| | - D. Perniu
- Transilvania University of Brasov
- Brasov
- Romania
| | - E. György
- National Institute for Lasers
- Plasma and Radiation Physics
- 77125 Bucharest
- Romania
- Instituto de Ciencia de Materiales de Barcelona
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Mirchin N, Peled A, Duta L, Popescu AC, Dorcioman G, Mihailescu IN. Nanoprofiles evaluation of ZnO thin films by an evanescent light method. Microsc Res Tech 2013; 76:992-6. [DOI: 10.1002/jemt.22259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 06/25/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Nina Mirchin
- EE Department; Holon Institute of Technology; Holon Israel 58102
| | - Aaron Peled
- EE Department; Holon Institute of Technology; Holon Israel 58102
| | - Liviu Duta
- Lasers Department; National Institute for Lasers, Plasma and Radiation Physics; RO-77125 Bucharest-Magurele Romania
| | - Andrei C. Popescu
- Lasers Department; National Institute for Lasers, Plasma and Radiation Physics; RO-77125 Bucharest-Magurele Romania
| | - Gabriela Dorcioman
- Lasers Department; National Institute for Lasers, Plasma and Radiation Physics; RO-77125 Bucharest-Magurele Romania
| | - Ion N. Mihailescu
- Lasers Department; National Institute for Lasers, Plasma and Radiation Physics; RO-77125 Bucharest-Magurele Romania
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Mirchin N, Apter B, Lapsker I, Fogel V, Gorodetsky U, Popescu SA, Peled A, Popescu-Pelin G, Dorcioman G, Duta L, Popescu A, Mihailescu IN. Measuring nanolayer profiles of various materials by evanescent light technique. J Nanosci Nanotechnol 2012; 12:2668-2671. [PMID: 22755106 DOI: 10.1166/jnn.2012.5788] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The evanescent light photon extraction efficiency of insulator, semiconductor and conductor amorphous nanolayers deposited on glass waveguides was evaluated from Differential Evanescent Light Intensity measurements. The Differential Evanescent Light Intensity technique uses the evanescent field scattered by the deposited nanolayer, enabling nanometer thickness profiling due to the high inherent dark background contrast. The results show that the effective evanescent photon penetration depth increases from metal to semiconductor and then to insulating layers, establishing thus the effective photon-material interaction length for the various materials classes.
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Affiliation(s)
- Nina Mirchin
- Photonics Laboratory, EE Department, Holon Institute of Technology, 52 Golomb Str.Holon, Israel- 58102
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Cristescu R, Popescu C, Popescu A, Grigorescu S, Duta L, Mihailescu I, Caraene G, Albulescu R, Albulescu L, Andronie A, Stamatin I, Ionescu A, Mihaiescu D, Buruiana T, Chrisey D. Functionalized polyvinyl alcohol derivatives thin films for controlled drug release and targeting systems: MAPLE deposition and morphological, chemical and in vitro characterization. Applied Surface Science 2009. [DOI: 10.1016/j.apsusc.2008.09.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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