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Chytrosz-Wrobel P, Golda-Cepa M, Drozdz K, Rysz J, Kubisiak P, Kulig W, Brzychczy-Wloch M, Cwiklik L, Kotarba A. In Vitro and In Silico Studies of Functionalized Polyurethane Surfaces toward Understanding Biologically Relevant Interactions. ACS Biomater Sci Eng 2023; 9:6112-6122. [PMID: 37909715 PMCID: PMC10646850 DOI: 10.1021/acsbiomaterials.3c01367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023]
Abstract
The solid-aqueous boundary formed upon biomaterial implantation provides a playground for most biochemical reactions and physiological processes involved in implant-host interactions. Therefore, for biomaterial development, optimization, and application, it is essential to understand the biomaterial-water interface in depth. In this study, oxygen plasma-functionalized polyurethane surfaces that can be successfully utilized in contact with the tissue of the respiratory system were prepared and investigated. Through experiments, the influence of plasma treatment on the physicochemical properties of polyurethane was investigated by atomic force microscopy, attenuated total reflection infrared spectroscopy, differential thermal analysis, X-ray photoelectron spectroscopy, secondary ion mass spectrometry, and contact angle measurements, supplemented with biological tests using the A549 cell line and two bacteria strains (Staphylococcus aureus and Pseudomonas aeruginosa). The molecular interpretation of the experimental findings was achieved by molecular dynamics simulations employing newly developed, fully atomistic models of unmodified and plasma-functionalized polyurethane materials to characterize the polyurethane-water interfaces at the nanoscale in detail. The experimentally obtained polar and dispersive surface free energies were consistent with the calculated free energies, verifying the adequacy of the developed models. A 20% substitution of the polymeric chain termini by their oxidized variants was observed in the experimentally obtained plasma-modified polyurethane surface, indicating the surface saturation with oxygen-containing functional groups.
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Affiliation(s)
- Paulina Chytrosz-Wrobel
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Monika Golda-Cepa
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kamil Drozdz
- Department
of Molecular Medical Microbiology, Chair of Microbiology, Faculty
of Medicine, Jagiellonian University Medical
College, Czysta 18, 31-121 Krakow, Poland
| | - Jakub Rysz
- Faculty
of Physics Astronomy and Applied Computer Science, Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
| | - Piotr Kubisiak
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
| | - Waldemar Kulig
- Department
of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Monika Brzychczy-Wloch
- Department
of Molecular Medical Microbiology, Chair of Microbiology, Faculty
of Medicine, Jagiellonian University Medical
College, Czysta 18, 31-121 Krakow, Poland
| | - Lukasz Cwiklik
- J.
Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - Andrzej Kotarba
- Faculty
of Chemistry, Jagiellonian University in
Krakow, Gronostajowa 2, 30-387 Krakow, Poland
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2
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Mrówka M, Lenża-Czempik J, Dawicka A, Skonieczna M. Polyurethane-Based Nanocomposites for Regenerative Therapies of Cancer Skin Surgery with Low Inflammatory Potential to Healthy Fibroblasts and Keratinocytes In Vitro. ACS OMEGA 2023; 8:37769-37780. [PMID: 37867722 PMCID: PMC10586018 DOI: 10.1021/acsomega.3c01663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 09/05/2023] [Indexed: 10/24/2023]
Abstract
Nanocomposites based on thermoplastic polyurethanes (TPUs) filled with halloysite nanotubes (HNTs) were studied for their physicochemical and biological properties. Nanocomposites containing halloysite nanotube filler contents of 1 and 2% (E+1 and E+2), respectively, were obtained by extrusion. The newly formed E+1 and E+2 nanomaterials exhibited better flexibility and similar thermal properties compared to neat polyurethane. The use of atomic force microscopy (AFM) and differential scanning calorimetry (DSC) thermogram analysis showed that the distribution of halloysite nanotubes in the polymer matrix is more evenly dispersed in the E+1 nanomaterial, where the grains in the E+2 nanomaterial have a greater tendency to form agglomerates. Mechanical tests have shown that nanocomposites with the addition of HNT are characterized by a higher stress at break and elongation at break compared to neat TPU. The results of cytotoxicity tests suggest that the nanocomposite materials express lower toxicity to normal HaCaT and NHDF than to cancer Me45 cells. Further studies showed that the tested materials induced the expression of proinflammatory interleukins IL6 and IL8 in normal cells, but their overexpression in the cancer cell line resulted in cytostatic effects and proliferation reduction. Such a conclusion suggests the possible application of tested materials for regenerative therapies in cancer surgeries.
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Affiliation(s)
- Maciej Mrówka
- Department
of Material Technologies, Faculty of Material Engineering, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland
- Material
Innovations Laboratory, Silesian University
of Technology, Krasińskiego
8, 40-019 Katowice, Poland
| | | | - Anahit Dawicka
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
- Department
of Systems Biology and Engineering, Silesian
University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Magdalena Skonieczna
- Biotechnology
Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
- Department
of Systems Biology and Engineering, Silesian
University of Technology, Akademicka 16, 44-100 Gliwice, Poland
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Tardelli JDC, Bagnato VS, Reis ACD. Bacterial Adhesion Strength on Titanium Surfaces Quantified by Atomic Force Microscopy: A Systematic Review. Antibiotics (Basel) 2023; 12:994. [PMID: 37370313 DOI: 10.3390/antibiotics12060994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/04/2022] [Accepted: 12/05/2022] [Indexed: 06/29/2023] Open
Abstract
Few studies have been able to elucidate the correlation of factors determining the strength of interaction between bacterial cells and substrate at the molecular level. The aim was to answer the following question: What biophysical factors should be considered when analyzing the bacterial adhesion strength on titanium surfaces and its alloys for implants quantified by atomic force microscopy? This review followed PRISMA. The search strategy was applied in four databases. The selection process was carried out in two stages. The risk of bias was analyzed. One thousand four hundred sixty-three articles were found. After removing the duplicates, 1126 were screened by title and abstract, of which 57 were selected for full reading and 5 were included; 3 had a low risk of bias and 2 moderated risks of bias. (1) The current literature shows the preference of bacteria to adhere to surfaces of the same hydrophilicity. However, this fact was contradicted by this systematic review, which demonstrated that hydrophobic bacteria developed hydrogen bonds and adhered to hydrophilic surfaces; (2) the application of surface treatments that induce the reduction of areas favorable for bacterial adhesion interfere more in the formation of biofilm than surface roughness; and (3) bacterial colonization should be evaluated in time-dependent studies as they develop adaptation mechanisms, related to time, which are obscure in this review.
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Affiliation(s)
- Juliana Dias Corpa Tardelli
- Department of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto 14040-904, Brazil
| | - Vanderlei Salvador Bagnato
- Department of Physics and Materials Science, São Carlos Institute of Physics, University of São Paulo (USP), São Carlos 13566-970, Brazil
| | - Andréa Cândido Dos Reis
- Department of Dental Materials and Prosthesis, School of Dentistry of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto 14040-904, Brazil
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Ścibik Ł, Ochońska D, Gołda-Cępa M, Kwiecień K, Pamuła E, Kotarba A, Brzychczy-Włoch M. Sonochemical Deposition of Gentamicin Nanoparticles at the PCV Tracheostomy Tube Surface Limiting Bacterial Biofilm Formation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16103765. [PMID: 37241392 DOI: 10.3390/ma16103765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/05/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND The use of nanotechnology in the production of medical equipment has opened new possibilities to fight bacterial biofilm developing on their surfaces, which can cause infectious complications. In this study, we decided to use gentamicin nanoparticles. An ultrasonic technique was used for their synthesis and immediate deposition onto the surface of tracheostomy tubes, and their effect on bacterial biofilm formation was evaluated. METHODS Polyvinyl chloride was functionalized using oxygen plasma followed by sonochemical formation and the embedment of gentamicin nanoparticles. The resulting surfaces were characterized with the use of AFM, WCA, NTA, FTIR and evaluated for cytotoxicity with the use of A549 cell line and for bacterial adhesion using reference strains of S. aureus (ATCC® 25923™) and E. coli (ATCC® 25922™). RESULTS The use of gentamicin nanoparticles significantly reduced the adhesion of bacterial colonies on the surface of the tracheostomy tube for S. aureus from 6 × 105 CFU/mL to 5 × 103 CFU/mL and for E. coli from 1.655 × 105 CFU/mL to 2 × 101 CFU/mL, and the functionalized surfaces did not show a cytotoxic effect on A549 cells (ATTC CCL 185). CONCLUSIONS The use of gentamicin nanoparticles on the polyvinyl chloride surface may be an additional supporting method for patients after tracheostomy in order to prevent the colonization of the biomaterial by potentially pathogenic microorganisms.
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Affiliation(s)
- Łukasz Ścibik
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, 18 Czysta Street, 31-121 Kraków, Poland
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Street, 30-387 Kraków, Poland
- Department of Otolaryngology and Oncological Surgery of the Head and Neck, 5th Military Hospital with Polyclinic in Krakow, 1-3 Wrocławska Street, 30-901 Kraków, Poland
| | - Dorota Ochońska
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, 18 Czysta Street, 31-121 Kraków, Poland
| | - Monika Gołda-Cępa
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Street, 30-387 Kraków, Poland
| | - Konrad Kwiecień
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Elżbieta Pamuła
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, 2 Gronostajowa Street, 30-387 Kraków, Poland
| | - Monika Brzychczy-Włoch
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, 18 Czysta Street, 31-121 Kraków, Poland
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Han B, Wang H, Bing W, Jin H. Bacterial adhesion properties of parylene C and D deposited on polydimethylsiloxane. NEW J CHEM 2022. [DOI: 10.1039/d1nj06223a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Parylene, a widely used protective coating, has received significant attention in medical applications. In this study, the bacterial adhesion properties of parylene C and D coated on polydimethylsiloxane (PDMS) substrates,...
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6
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Chytrosz P, Golda-Cepa M, Wlodarczyk J, Kuzdzal J, El Fray M, Kotarba A. Characterization of Partially Covered Self-Expandable Metallic Stents for Esophageal Cancer Treatment: In Vivo Degradation. ACS Biomater Sci Eng 2021; 7:1403-1413. [PMID: 33709689 PMCID: PMC8045022 DOI: 10.1021/acsbiomaterials.0c01773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Partially covered self-expandable metallic esophageal stent (SEMS) placement is the most frequently applied palliative treatment in esophageal cancer. Structural characterization of explanted 16 nitinol-polyurethane SEMS (the group of 6 females, 10 males, age 40-80) was performed after their removal due to dysfunction. The adverse bulk changes in the polymer structure were identified using differential scanning calorimetry (DSC), differential mechanical thermal analysis (DMTA), and attenuated total reflectance infrared spectroscopy (ATR-IR) and discussed in terms of melting point shift (9 °C), glass-transition shift (4 °C), differences in viscoelastic behavior, and systematic decrease of peaks intensities corresponding to C-H, C═O, and C-N polyurethane structural bonds. The scanning electron and confocal microscopic observations revealed all major types of surface degradation, i.e., surface cracks, peeling off of the polymer material, and surface etching. The changes in the hydrophobic polyurethane surfaces were also revealed by a significant decrease in wettability (74°) and the corresponding increase of the surface free energy (31 mJ/m2). To understand the in vivo degradation, the in vitro tests in simulated salivary and gastric fluids were performed, which mimic the environments of proximal and distal ends, respectively. It was concluded that the differences in the degradation of the proximal and distal ends of prostheses strongly depend on the physiological environment, in particular stomach content. Finally, the necessity of the in vivo tests for SEMS degradation is pointed out.
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Affiliation(s)
- Paulina Chytrosz
- Faculty of Chemistry, Jagiellonian University, 31-007 Kraków, Poland
| | - Monika Golda-Cepa
- Faculty of Chemistry, Jagiellonian University, 31-007 Kraków, Poland
| | - Janusz Wlodarczyk
- Department of Thoracic and Surgical Oncology, Jagiellonian University Medical College, John Paul II Hospital, 30-387 Kraków, Poland
| | - Jarosław Kuzdzal
- Department of Thoracic and Surgical Oncology, Jagiellonian University Medical College, John Paul II Hospital, 30-387 Kraków, Poland
| | - Miroslawa El Fray
- Department of Polymer and Biomaterials Science, West Pomeranian University of Technology, 70-310 Szczecin, Poland
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, 31-007 Kraków, Poland
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7
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Golda-Cepa M, Riedlová K, Kulig W, Cwiklik L, Kotarba A. Functionalization of the Parylene C Surface Enhances the Nucleation of Calcium Phosphate: Combined Experimental and Molecular Dynamics Simulations Approach. ACS APPLIED MATERIALS & INTERFACES 2020; 12:12426-12435. [PMID: 32098467 PMCID: PMC7497617 DOI: 10.1021/acsami.9b20877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 02/26/2020] [Indexed: 06/10/2023]
Abstract
Interactions at the solid-body fluid interfaces play a vital role in bone tissue formation at the implant surface. In this study, fully atomistic molecular dynamics (MD) simulations were performed to investigate interactions between the physiological components of body fluids (Ca2+, HPO42-, H2PO4-, Na+, Cl-, and H2O) and functionalized parylene C surface. In comparison to the native parylene C (-Cl surface groups), the introduction of -OH, -CHO, and -COOH surface groups significantly enhances the interactions between body fluid ions and the polymeric surface. The experimentally observed formation of calcium phosphate nanocrystals is discussed in terms of MD simulations of the calcium phosphate clustering. Surface functional groups promote the clustering of calcium and phosphate ions in the following order: -OH > -CHO > -Cl (parent parylene C) ≈ -COO-. This promoting role of surface functional groups is explained as stimulating the number of Ca2+ and HPO42- surface contacts as well as ion chemisorption. The molecular mechanism of calcium phosphate cluster formation at the functionalized parylene C surface is proposed.
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Affiliation(s)
- Monika Golda-Cepa
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Kamila Riedlová
- J.
Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
- Faculty
of Science, Department of Physical and Macromolecular Chemistry, Charles University in Prague, Hlavova 2030, 12840 Prague 2, Czech Republic
| | - Waldemar Kulig
- Department
of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Lukasz Cwiklik
- J.
Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - Andrzej Kotarba
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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8
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Mariello M, Guido F, Mastronardi VM, Giannuzzi R, Algieri L, Qualteri A, Maffezzoli A, De Vittorio M. Reliability of Protective Coatings for Flexible Piezoelectric Transducers in Aqueous Environments. MICROMACHINES 2019; 10:mi10110739. [PMID: 31683528 PMCID: PMC6915620 DOI: 10.3390/mi10110739] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 10/24/2019] [Accepted: 10/29/2019] [Indexed: 02/08/2023]
Abstract
Electronic devices used for marine applications suffer from several issues that can compromise their performance. In particular, water absorption and permeation can lead to the corrosion of metal parts or short-circuits. The added mass due to the absorbed water affects the inertia and durability of the devices, especially for flexible and very thin micro-systems. Furthermore, the employment of such delicate devices underwater is unavoidably subjected to the adhesion of microorganisms and formation of biofilms that limit their reliability. Thus, the demand of waterproofing solutions has increased in recent years, focusing on more conformal, flexible and insulating coatings. This work introduces an evaluation of different polymeric coatings (parylene-C, poly-dimethyl siloxane (PDMS), poly-methyl methacrylate (PMMA), and poly-(vinylidene fluoride) (PVDF)) aimed at increasing the reliability of piezoelectric flexible microdevices used for sensing water motions or for scavenging wave energy. Absorption and corrosion tests showed that Parylene-C, while susceptible to micro-cracking during prolonged oscillating cycles, exhibits the best anti-corrosive behavior. Parylene-C was then treated with oxygen plasma and UV/ozone for modifying the surface morphology in order to evaluate the biofilm formation with different surface conditions. A preliminary characterization through a laser Doppler vibrometer allowed us to detect a reduction in the biofilm mass surface density after 35 days of exposure to seawater.
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Affiliation(s)
- Massimo Mariello
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, 73010 Arnesano (Lecce), Italy.
- Dipartimento di Ingegneria dell'Innovazione, Università del Salento, 73100 Lecce, Italy.
| | - Francesco Guido
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, 73010 Arnesano (Lecce), Italy.
| | | | - Roberto Giannuzzi
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, 73010 Arnesano (Lecce), Italy.
| | | | - Antonio Qualteri
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, 73010 Arnesano (Lecce), Italy.
| | - Alfonso Maffezzoli
- Dipartimento di Ingegneria dell'Innovazione, Università del Salento, 73100 Lecce, Italy.
| | - Massimo De Vittorio
- Istituto Italiano di Tecnologia, Center for Biomolecular Nanotechnologies, 73010 Arnesano (Lecce), Italy.
- Dipartimento di Ingegneria dell'Innovazione, Università del Salento, 73100 Lecce, Italy.
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9
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Moon H, Chou N, Seo HW, Lee K, Park J, Kim S. Transformation of 2D Planes into 3D Soft and Flexible Structures with Embedded Electrical Functionality. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36186-36195. [PMID: 31432666 DOI: 10.1021/acsami.9b09578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three-dimensional (3D) structures composed of flexible and soft materials have been in demand for implantable biomedical devices. However, the fabrication of 3D structures using microelectromechanical system (MEMS) techniques has limitations in terms of the materials and the scale of the structures. Here, a technique to selectively bond polydimethylsiloxane (PDMS) and parylene-C by plasma treatment is reported, with which two-dimensional structures that are fabricated using MEMS techniques are turned into 3D structures by the inflation of selectively non-bonded patterns. The bonding strength and the bonding mechanism were analyzed by mechanical tests and chemical analyses, respectively. We fabricated soft and flexible 3D structures with various patterns and dimensions, even with embedded electrical functions, including light emitting diodes and electrocorticogram electrodes. Based on these results, the flexible, soft, and MEMS-capable 3D structures that are obtained by the developed selective bonding technique are promising for applications in a wide range of biomedical applications.
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Affiliation(s)
| | - Namsun Chou
- Center for BioMicroSystems , Korea Institute of Science and Technology (KIST) , Seoul 02792 , Republic of Korea
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Justeau C, Slimani Tlemcani T, Poulin-Vittrant G, Nadaud K, Alquier D. A Comparative Study on the Effects of Au, ZnO and AZO Seed Layers on the Performance of ZnO Nanowire-Based Piezoelectric Nanogenerators. MATERIALS 2019; 12:ma12162511. [PMID: 31394800 PMCID: PMC6720262 DOI: 10.3390/ma12162511] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 07/29/2019] [Accepted: 08/03/2019] [Indexed: 01/23/2023]
Abstract
In this study, different seed layers like gold (Au), zinc oxide (ZnO) and aluminum-doped ZnO (AZO) have been associated to ZnO nanowires (NWs) for the development of mechanical energy harvesters. ZnO NWs were grown by using a low temperature hydrothermal method. The morphological properties were investigated using Scanning Electron Microscopy (SEM) and the analysis of crystalline quality and growth orientation was studied using X-ray Diffraction (XRD). The obtained ZnO NWs are found to be highly dense, uniformly distributed and vertically well aligned on the ZnO and AZO seed layers, while ZnO NWs grown on Au possess a low density and follow a non-uniform distribution. Moreover, the NWs exhibited good crystal quality over the seed layers. The piezoelectric nanogenerator (PENG) consists of ZnO NWs grown on the three different seed layers, parylene-C matrix, Ti/Al top electrode and poly(dimethylsiloxane) (PDMS) encapsulated polymer composite. The measurements of the open circuit voltage (VOC) were around 272 mV, 36 mV for ZnO, AZO seed layers while the PENG including Au seed layer presented a short-circuited state. This study is an important step in order to investigate the effect of different seed layers influencing the magnitude of the generated electrical performances under identical growth and measurement conditions. It will also help identify the most suitable seed layers for energy harvesting devices and their future integration in industrial applications.
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Affiliation(s)
- Camille Justeau
- GREMAN UMR 7347, Université de Tours, CNRS, INSA Centre Val de Loire, 37071 Tours, France.
| | | | | | - Kevin Nadaud
- GREMAN UMR 7347, Université de Tours, CNRS, INSA Centre Val de Loire, 37071 Tours, France
| | - Daniel Alquier
- GREMAN UMR 7347, Université de Tours, CNRS, INSA Centre Val de Loire, 37071 Tours, France
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11
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Golda-Cepa M, Chytrosz P, Chorylek A, Kotarba A. One-step sonochemical fabrication and embedding of gentamicin nanoparticles into parylene C implant coating: towards controlled drug delivery. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:941-950. [DOI: 10.1016/j.nano.2018.01.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 01/02/2018] [Accepted: 01/22/2018] [Indexed: 01/05/2023]
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12
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Golda-Cepa M, Kulig W, Cwiklik L, Kotarba A. Molecular Dynamics Insights into Water-Parylene C Interface: Relevance of Oxygen Plasma Treatment for Biocompatibility. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16685-16693. [PMID: 28459527 DOI: 10.1021/acsami.7b03265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Solid-water interfaces play a vital role in biomaterials science because they provide a natural playground for most biochemical reactions and physiological processes. In the study, fully atomistic molecular dynamics simulations were performed to investigate interactions between water molecules and several surfaces modeling for unmodified and modified parylene C surfaces. The introduction of -OH, -CHO, and -COOH to the surface and alterations in their coverage significantly influence the energetics of interactions between water molecules and the polymer surface. The theoretical studies were complemented with experimental measurements of contact angle, surface free energy, and imaging of osteoblast cells adhesion. Both MD simulations and experiments demonstrate that the optimal interface, in terms of biocompatibility, is obtained when 60% of native -Cl groups of parylene C surface is exchanged for -OH groups. By exploring idealized models of bare and functionalized parylene C, we obtained a unique insight into molecular interactions at the water-polymer interface. The calculated values of interaction energy components (electrostatic and dispersive) correspond well with the experimentally determined values of surface free energy components (polar and dispersive), revealing their optimal ratio for cells adhesion. The results are discussed in the context of controllable tuning and functionalization of implant polymeric coating toward improved biocompatibility.
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Affiliation(s)
- Monika Golda-Cepa
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - Waldemar Kulig
- Department of Physics, University of Helsinki , P.O. Box 64, FI-00014 Helsinki, Finland
- Department of Physics, Tampere University of Technology , P.O. Box 692, FI- 33101 Tampere, Finland
| | - Lukasz Cwiklik
- J. Heyrovský Institute of Physical Chemistry, Czech Academy of Sciences , Dolejškova 3, Prague 18223, Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo nám. 2, Prague 16610, Czech Republic
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
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13
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Plasma polymerized carvone as an antibacterial and biocompatible coating. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:861-871. [DOI: 10.1016/j.msec.2016.07.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/12/2016] [Accepted: 07/17/2016] [Indexed: 01/11/2023]
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14
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Golda-Cepa M, Syrek K, Brzychczy-Wloch M, Sulka G, Kotarba A. Primary role of electron work function for evaluation of nanostructured titania implant surface against bacterial infection. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 66:100-105. [DOI: 10.1016/j.msec.2016.04.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/29/2016] [Accepted: 04/21/2016] [Indexed: 01/16/2023]
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Golda-Cepa M, Chorylek A, Chytrosz P, Brzychczy-Wloch M, Jaworska J, Kasperczyk J, Hakkarainen M, Engvall K, Kotarba A. Multifunctional PLGA/Parylene C Coating for Implant Materials: An Integral Approach for Biointerface Optimization. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22093-22105. [PMID: 27500860 DOI: 10.1021/acsami.6b08025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Functionalizing implant surfaces is critical for improving their performance. An integrated approach was employed to develop a multifunctional implant coating based on oxygen plasma-modified parylene C and drug-loaded, biodegradable poly(dl-lactide-co-glycolide) (PLGA). The key functional attributes of the coating (i.e., anti-corrosion, biocompatible, anti-infection, and therapeutic) were thoroughly characterized at each fabrication step by spectroscopic, microscopic, and biologic methods and at different scales, ranging from molecular, through the nano- and microscales to the macroscopic scale. The chemistry of each layer was demonstrated separately, and their mutual affinity was shown to be indispensable for the development of versatile coatings for implant applications.
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Affiliation(s)
- M Golda-Cepa
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - A Chorylek
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - P Chytrosz
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
| | - M Brzychczy-Wloch
- Department of Bacteriology, Microbial Ecology and Parasitology, Jagiellonian University Medical College , Czysta 18, 31-121 Krakow, Poland
| | - J Jaworska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , Curie Skłodowskiej 34, 41-819 Zabrze, Poland
| | - J Kasperczyk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , Curie Skłodowskiej 34, 41-819 Zabrze, Poland
| | - M Hakkarainen
- Department of Fiber and Polymer Technology, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - K Engvall
- Department of Chemical Engineering and Technology, KTH Royal Institute of Technology , SE-100 44 Stockholm, Sweden
| | - A Kotarba
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Krakow, Poland
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