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Omar AM, Hassan MH, Daskalakis E, Smith A, Dooghue J, Mirihanage W, Bartolo PJDS. Biomimetic dual sensing polymer nanocomposite for biomedical applications. Front Bioeng Biotechnol 2024; 12:1322753. [PMID: 38444647 PMCID: PMC10913024 DOI: 10.3389/fbioe.2024.1322753] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/02/2024] [Indexed: 03/07/2024] Open
Abstract
There is a growing need for sensing materials that can provide multiple sensing capabilities for wearable devices, implantable sensors, and diagnostics tools. As complex human physiology requires materials that can simultaneously detect and respond to slow and fast pressure fluctuations. Mimicking the slow adaptive (SA) and fast adaptive (FA) mechanoreceptors in skin can lead to the development of dual sensing electrospun polymer nanocomposites for biomedical applications. These dual sensing nanocomposites can provide simultaneous sensing of both slow and fast pressure fluctuations, making them ideal for applications such as monitoring vital signs, detecting a wider range of movements and pressures. Here we develop a novel dual sensing PVDF-HFP-based nanocomposite that combines the advantages of capacitive and piezoelectric properties through controling electrospinning environment and processing parameters, polymer solution composition, and addition of nucleating agents such as Carbon Black (CB) to enhance the crystalline development of β-phase, fibre thickness, and morphology. The developed PVDF-HFP/CB nanocomposite presents and response to both slow and fast pressure fluctuations with high capacitance (5.37 nF) and output voltage (1.51 V) allowing for accurate and reliable measurements.
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Affiliation(s)
- Abdalla M. Omar
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
| | - Mohamed H. Hassan
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | - Evangelos Daskalakis
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
| | | | | | - Wajira Mirihanage
- Department of Materials, The University of Manchester, Manchester, United Kingdom
| | - Paulo J. D. S. Bartolo
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester, United Kingdom
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
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Omar AM, Hassan MH, Daskalakis E, Ates G, Bright CJ, Xu Z, Powell EJ, Mirihanage W, Bartolo PJDS. Geometry-Based Computational Fluid Dynamic Model for Predicting the Biological Behavior of Bone Tissue Engineering Scaffolds. J Funct Biomater 2022; 13:jfb13030104. [PMID: 35997442 PMCID: PMC9397055 DOI: 10.3390/jfb13030104] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/22/2022] [Accepted: 07/24/2022] [Indexed: 02/05/2023] Open
Abstract
The use of biocompatible and biodegradable porous scaffolds produced via additive manufacturing is one of the most common approaches in tissue engineering. The geometric design of tissue engineering scaffolds (e.g., pore size, pore shape, and pore distribution) has a significant impact on their biological behavior. Fluid flow dynamics are important for understanding blood flow through a porous structure, as they determine the transport of nutrients and oxygen to cells and the flushing of toxic waste. The aim of this study is to investigate the impact of the scaffold architecture, pore size and distribution on its biological performance using Computational Fluid Dynamics (CFD). Different blood flow velocities (BFV) induce wall shear stresses (WSS) on cells. WSS values above 30 mPa are detrimental to their growth. In this study, two scaffold designs were considered: rectangular scaffolds with uniform square pores (300, 350, and 450 µm), and anatomically designed circular scaffolds with a bone-like structure and pore size gradient (476–979 µm). The anatomically designed scaffolds provided the best fluid flow conditions, suggesting a 24.21% improvement in the biological performance compared to the rectangular scaffolds. The numerical observations are aligned with those of previously reported biological studies.
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Affiliation(s)
- Abdalla M. Omar
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
- Correspondence: (A.M.O.); (P.J.D.S.B.)
| | - Mohamed H. Hassan
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
| | - Evangelos Daskalakis
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
| | - Gokhan Ates
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
| | - Charlie J. Bright
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
| | - Zhanyan Xu
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
| | - Emily J. Powell
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
| | - Wajira Mirihanage
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK;
| | - Paulo J. D. S. Bartolo
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (M.H.H.); (E.D.); (G.A.); (C.J.B.); (Z.X.); (E.J.P.)
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore
- Correspondence: (A.M.O.); (P.J.D.S.B.)
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Marsudi MA, Ariski RT, Wibowo A, Cooper G, Barlian A, Rachmantyo R, Bartolo PJDS. Conductive Polymeric-Based Electroactive Scaffolds for Tissue Engineering Applications: Current Progress and Challenges from Biomaterials and Manufacturing Perspectives. Int J Mol Sci 2021; 22:11543. [PMID: 34768972 PMCID: PMC8584045 DOI: 10.3390/ijms222111543] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 10/01/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 02/06/2023] Open
Abstract
The practice of combining external stimulation therapy alongside stimuli-responsive bio-scaffolds has shown massive potential for tissue engineering applications. One promising example is the combination of electrical stimulation (ES) and electroactive scaffolds because ES could enhance cell adhesion and proliferation as well as modulating cellular specialization. Even though electroactive scaffolds have the potential to revolutionize the field of tissue engineering due to their ability to distribute ES directly to the target tissues, the development of effective electroactive scaffolds with specific properties remains a major issue in their practical uses. Conductive polymers (CPs) offer ease of modification that allows for tailoring the scaffold's various properties, making them an attractive option for conductive component in electroactive scaffolds. This review provides an up-to-date narrative of the progress of CPs-based electroactive scaffolds and the challenge of their use in various tissue engineering applications from biomaterials perspectives. The general issues with CP-based scaffolds relevant to its application as electroactive scaffolds were discussed, followed by a more specific discussion in their applications for specific tissues, including bone, nerve, skin, skeletal muscle and cardiac muscle scaffolds. Furthermore, this review also highlighted the importance of the manufacturing process relative to the scaffold's performance, with particular emphasis on additive manufacturing, and various strategies to overcome the CPs' limitations in the development of electroactive scaffolds.
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Affiliation(s)
- Maradhana Agung Marsudi
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, West Java, Indonesia; (M.A.M.); (R.T.A.); (R.R.)
| | - Ridhola Tri Ariski
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, West Java, Indonesia; (M.A.M.); (R.T.A.); (R.R.)
| | - Arie Wibowo
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, West Java, Indonesia; (M.A.M.); (R.T.A.); (R.R.)
- Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, West Java, Indonesia
| | - Glen Cooper
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (G.C.); (P.J.D.S.B.)
| | - Anggraini Barlian
- School of Life Science & Technology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, West Java, Indonesia;
| | - Riska Rachmantyo
- Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, West Java, Indonesia; (M.A.M.); (R.T.A.); (R.R.)
| | - Paulo J. D. S. Bartolo
- Department of Mechanical, Aerospace, and Civil Engineering, University of Manchester, Manchester M13 9PL, UK; (G.C.); (P.J.D.S.B.)
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