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Huang W, Cai X, Xiao C, Song W, Yin H, Xu W. Surface micropatterning of 3D printed PCL scaffolds promotes osteogenic differentiation of BMSCs and regulates macrophage M2 polarization. Heliyon 2024; 10:e26621. [PMID: 38434344 PMCID: PMC10907665 DOI: 10.1016/j.heliyon.2024.e26621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 03/05/2024] Open
Abstract
Micropatterned structures on the surface of materials possessing biomimetic properties to mimic the extracellular matrix and induce cellular behaviors have been widely studied. However, it is still a major challenge to obtain internally stable and controllable micropatterned 3D scaffolds for bone repair and regeneration. In this study, 3D scaffolds with regular grating arrays using polycaprolactone (PCL) as a matrix material were prepared by combining 3D printing and soft lithography, and the effects of grating micropatterning on osteogenic differentiation of BMSCs and M1/M2 polarization of macrophages were investigated. The results showed that compared with the planar group and the 30um grating spacing group, PCL with a grating spacing of 20um significantly promoted the osteogenic differentiation of BMSCs, induced the polarization of RAW264.7 cells toward M2 type, and suppressed the expression of M1-type pro-inflammatory genes and markers. In conclusion, we successfully constructed PCL-based three-dimensional scaffolds with stable and controllable micrographs (grating arrays) inside, which possess excellent osteogenic properties and promote the formation of an immune microenvironment conducive to osteogenesis. This study is a step forward to the exploration of bone-filling materials affecting cell behavior, and makes a new contribution to the provision of high-quality materials.
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Affiliation(s)
- Weihua Huang
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- Department of Orthopaedic Surgery, Affiliated Qingyuan Hospital, Guangzhou Medical University, Qingyuan People's Hospital, No.35, Yinquan North Road, Qingcheng District, Qingyuan, Guangdong, 511518, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Guangzhou Medical University, The Second Clinical Medicine School of Guangzhou Medical University, No. 250, Changgang East Road, Haizhu District, Guangzhou, Guangdong, 510260, China
| | - Xiayu Cai
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
| | - Chujie Xiao
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- National Engineering Research Center for Human Tissue Restoration and Function Reconstruction, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong, 510275, China
| | - Wenlu Song
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- Sun Yat-Sen University, Xingang West Road 135, Guangzhou, Guangdong, 510006, China
| | - Huinan Yin
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Guangzhou Medical University, The Second Clinical Medicine School of Guangzhou Medical University, No. 250, Changgang East Road, Haizhu District, Guangzhou, Guangdong, 510260, China
| | - Weikang Xu
- Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong, 510316, China
- National Engineering Research Center for Healthcare Devices, Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, No. 1307 Guangzhou Avenue Central, Tianhe District, Guangzhou, Guangdong, 510500, China
- Guangdong Chinese Medicine Intelligent Diagnosis and Treatment Engineering Technology Research center, Jianghai Avenue Central, Haizhu District, Guangzhou, Guangdong 510316, China
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Badali V, Checa S, Zehn MM, Marinkovic D, Mohammadkhah M. Computational design and evaluation of the mechanical and electrical behavior of a piezoelectric scaffold: a preclinical study. Front Bioeng Biotechnol 2024; 11:1261108. [PMID: 38274011 PMCID: PMC10808828 DOI: 10.3389/fbioe.2023.1261108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Piezoelectric scaffolds have been recently developed to explore their potential to enhance the bone regeneration process using the concept of piezoelectricity, which also inherently occurs in bone. In addition to providing mechanical support during bone healing, with a suitable design, they are supposed to produce electrical signals that ought to favor the cell responses. In this study, using finite element analysis (FEA), a piezoelectric scaffold was designed with the aim of providing favorable ranges of mechanical and electrical signals when implanted in a large bone defect in a large animal model, so that it could inform future pre-clinical studies. A parametric analysis was then performed to evaluate the effect of the scaffold design parameters with regard to the piezoelectric behavior of the scaffold. The designed scaffold consisted of a porous strut-like structure with piezoelectric patches covering its free surfaces within the scaffold pores. The results showed that titanium or PCL for the scaffold and barium titanate (BT) for the piezoelectric patches are a promising material combination to generate favorable ranges of voltage, as reported in experimental studies. Furthermore, the analysis of variance showed the thickness of the piezoelectric patches to be the most influential geometrical parameter on the generation of electrical signals in the scaffold. This study shows the potential of computer tools for the optimization of scaffold designs and suggests that patches of piezoelectric material, attached to the scaffold surfaces, can deliver favorable ranges of electrical stimuli to the cells that might promote bone regeneration.
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Affiliation(s)
- Vahid Badali
- Department of Structural Mechanics and Analysis, Technische Universität Berlin, Berlin, Germany
- Julius Wolff Institute, Berlin Institute of Health, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Sara Checa
- Department of Structural Mechanics and Analysis, Technische Universität Berlin, Berlin, Germany
- Julius Wolff Institute, Berlin Institute of Health, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Manfred M. Zehn
- Department of Structural Mechanics and Analysis, Technische Universität Berlin, Berlin, Germany
| | - Dragan Marinkovic
- Department of Structural Mechanics and Analysis, Technische Universität Berlin, Berlin, Germany
| | - Melika Mohammadkhah
- Department of Structural Mechanics and Analysis, Technische Universität Berlin, Berlin, Germany
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Ribeiro S, Marques-Almeida T, Cardoso VF, Ribeiro C, Lanceros-Méndez S. Modulation of myoblast differentiation by electroactive scaffold morphology and biochemical stimuli. BIOMATERIALS ADVANCES 2023; 151:213438. [PMID: 37121084 DOI: 10.1016/j.bioadv.2023.213438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/24/2023] [Accepted: 04/19/2023] [Indexed: 05/02/2023]
Abstract
The physico-chemical properties of the scaffold materials used for tissue regeneration strategies have a direct impact on cell shape, adhesion, proliferation, phenotypic and differentiation. Herewith, biophysical and biochemical cues have been widely used to design and develop biomaterial systems for specific tissue engineering strategies. In this context, the patterning of piezoelectric polymers that can provide electroactive stimuli represents a suitable strategy for skeletal muscle tissue engineering applications once it has been demonstrated that mechanoelectrical stimuli promote C2C12 myoblast differentiation. In this sense, this works reports on how C2C12 myoblast cells detect and react to physical and biochemical stimuli based on micropatterned poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) electroactive scaffolds produced by soft lithography in the form of arrays of lines and hexagons (anisotropic and isotropic morphology, respectively) combined with differentiation medium. The scaffolds were evaluated for the proliferation and differentiation of C2C12 myoblast cell line and it is demonstrated that anisotropic microstructures promote muscle differentiation which is further reinforced with the introduction of biochemical stimulus. However, when the physical stimulus is not adequate to the tissue, e.g. isotropic microstructure, the biochemical stimulus has the opposite effect, hindering the differentiation process. Therefore, the proper morphological design of the scaffold combined with biochemical stimulus allows to enhance skeletal muscle differentiation and allows the development of advanced strategies for effective muscle tissue engineering.
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Affiliation(s)
- Sylvie Ribeiro
- Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal; LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; IB-S - Institute of Science and Innovation for Sustainability, University of Minho, 4710-057 Braga, Portugal.
| | - Teresa Marques-Almeida
- Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal; LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
| | - Vanessa F Cardoso
- Center for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, 4800-058 Guimarães, Portugal; LABBELS-Associate Laboratory in Biotechnology and Bioengineering and Microelectromechanical Systems, Universidade do Minho, Braga/Guimarães, Portugal
| | - Clarisse Ribeiro
- Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal; LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; IB-S - Institute of Science and Innovation for Sustainability, University of Minho, 4710-057 Braga, Portugal
| | - Senentxu Lanceros-Méndez
- Physics Center of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057 Braga, Portugal; LaPMET - Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal; BCMaterials, Basque Centre for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain; IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
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Heng BC, Bai Y, Li X, Lim LW, Li W, Ge Z, Zhang X, Deng X. Electroactive Biomaterials for Facilitating Bone Defect Repair under Pathological Conditions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204502. [PMID: 36453574 PMCID: PMC9839869 DOI: 10.1002/advs.202204502] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/24/2022] [Indexed: 06/02/2023]
Abstract
Bone degeneration associated with various diseases is increasing due to rapid aging, sedentary lifestyles, and unhealthy diets. Living bone tissue has bioelectric properties critical to bone remodeling, and bone degeneration under various pathological conditions results in significant changes to these bioelectric properties. There is growing interest in utilizing biomimetic electroactive biomaterials that recapitulate the natural electrophysiological microenvironment of healthy bone tissue to promote bone repair. This review first summarizes the etiology of degenerative bone conditions associated with various diseases such as type II diabetes, osteoporosis, periodontitis, osteoarthritis, rheumatoid arthritis, osteomyelitis, and metastatic osteolysis. Next, the diverse array of natural and synthetic electroactive biomaterials with therapeutic potential are discussed. Putative mechanistic pathways by which electroactive biomaterials can mitigate bone degeneration are critically examined, including the enhancement of osteogenesis and angiogenesis, suppression of inflammation and osteoclastogenesis, as well as their anti-bacterial effects. Finally, the limited research on utilization of electroactive biomaterials in the treatment of bone degeneration associated with the aforementioned diseases are examined. Previous studies have mostly focused on using electroactive biomaterials to treat bone traumatic injuries. It is hoped that this review will encourage more research efforts on the use of electroactive biomaterials for treating degenerative bone conditions.
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Affiliation(s)
- Boon Chin Heng
- Central LaboratoryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- School of Medical and Life SciencesSunway UniversityDarul EhsanSelangor47500Malaysia
| | - Yunyang Bai
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xiaochan Li
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Lee Wei Lim
- Neuromodulation LaboratorySchool of Biomedical SciencesLi Ka Shing Faculty of MedicineThe University of Hong KongPokfulamHong KongP. R. China
| | - Wang Li
- Department of Biomedical EngineeringPeking UniversityBeijing100871P. R. China
| | - Zigang Ge
- Department of Biomedical EngineeringPeking UniversityBeijing100871P. R. China
| | - Xuehui Zhang
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
| | - Xuliang Deng
- Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijing100081P. R. China
- Department of Dental Materials & Dental Medical Devices Testing CenterPeking University School and Hospital of StomatologyBeijing100081P. R. China
- National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesNMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials & Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijing100081P. R. China
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Marques-Almeida T, Fernandes HJR, Lanceros-Mendez S, Ribeiro C. Surface charge and dynamic mechanoelectrical stimuli improves adhesion, proliferation and differentiation of neuron-like cells. J Mater Chem B 2022; 11:144-153. [PMID: 36441601 DOI: 10.1039/d2tb01933g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Neuronal diseases and trauma are among the current major health-care problems. Patients frequently develop an irreversible state of neuronal disfunction that lacks treatment, strongly reducing life quality and expectancy. Novel strategies are thus necessary and tissue engineering research is struggling to provide alternatives to current treatments, making use of biomaterials capable to provide cell supports and active stimuli to develop permissive environments for neural regeneration. As neuronal cells are naturally found in electrical microenvironments, the electrically active materials can pave the way for new and effective neuroregenerative therapies. In this work the influence of piezoelectric poly(vinylidene fluoride) with different surface charges and dynamic mechanoelectrical stimuli on neuron-like cells adhesion, proliferation and differentiation was addressed. It is successfully demonstrated that both surface charge and electrically active dynamic microenvironments can be suitable to improve neuron-like cells adhesion, proliferation, and differentiation. These findings provide new knowledge to develop effective approaches for preclinical applications.
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Affiliation(s)
- T Marques-Almeida
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057, Braga, Portugal. .,LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057, Braga, Portugal
| | - H J R Fernandes
- UK Dementia Research Institute, University of Cambridge, Department of Clinical Neurosciences, Cambridge Biomedical Campus, Cambridge, CB2 0AH, UK
| | - S Lanceros-Mendez
- BCMaterials, Basque Centre for Materials and Applications, UPV/EHU Science Park, Leioa, 48940, Spain. .,IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Spain
| | - C Ribeiro
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4710-057, Braga, Portugal. .,LaPMET-Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057, Braga, Portugal
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Translating Material Science into Bone Regenerative Medicine Applications: State-of-The Art Methods and Protocols. Int J Mol Sci 2022; 23:ijms23169493. [PMID: 36012749 PMCID: PMC9409266 DOI: 10.3390/ijms23169493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/18/2022] [Accepted: 08/20/2022] [Indexed: 12/02/2022] Open
Abstract
In the last 20 years, bone regenerative research has experienced exponential growth thanks to the discovery of new nanomaterials and improved manufacturing technologies that have emerged in the biomedical field. This revolution demands standardization of methods employed for biomaterials characterization in order to achieve comparable, interoperable, and reproducible results. The exploited methods for characterization span from biophysics and biochemical techniques, including microscopy and spectroscopy, functional assays for biological properties, and molecular profiling. This review aims to provide scholars with a rapid handbook collecting multidisciplinary methods for bone substitute R&D and validation, getting sources from an up-to-date and comprehensive examination of the scientific landscape.
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D’Alessandro D, Ricci C, Milazzo M, Strangis G, Forli F, Buda G, Petrini M, Berrettini S, Uddin MJ, Danti S, Parchi P. Piezoelectric Signals in Vascularized Bone Regeneration. Biomolecules 2021; 11:1731. [PMID: 34827729 PMCID: PMC8615512 DOI: 10.3390/biom11111731] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 02/07/2023] Open
Abstract
The demand for bone substitutes is increasing in Western countries. Bone graft substitutes aim to provide reconstructive surgeons with off-the-shelf alternatives to the natural bone taken from humans or animal species. Under the tissue engineering paradigm, biomaterial scaffolds can be designed by incorporating bone stem cells to decrease the disadvantages of traditional tissue grafts. However, the effective clinical application of tissue-engineered bone is limited by insufficient neovascularization. As bone is a highly vascularized tissue, new strategies to promote both osteogenesis and vasculogenesis within the scaffolds need to be considered for a successful regeneration. It has been demonstrated that bone and blood vases are piezoelectric, namely, electric signals are locally produced upon mechanical stimulation of these tissues. The specific effects of electric charge generation on different cells are not fully understood, but a substantial amount of evidence has suggested their functional and physiological roles. This review summarizes the special contribution of piezoelectricity as a stimulatory signal for bone and vascular tissue regeneration, including osteogenesis, angiogenesis, vascular repair, and tissue engineering, by considering different stem cell sources entailed with osteogenic and angiogenic potential, aimed at collecting the key findings that may enable the development of successful vascularized bone replacements useful in orthopedic and otologic surgery.
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Affiliation(s)
- Delfo D’Alessandro
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy; (D.D.); (F.F.); (S.B.)
| | - Claudio Ricci
- Department of Translational Research and of New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (C.R.); (P.P.)
| | - Mario Milazzo
- The BioRobotics Intitute, Scuola Superiore Sant’Anna, 56024 Pontedera, Italy;
| | - Giovanna Strangis
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy;
| | - Francesca Forli
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy; (D.D.); (F.F.); (S.B.)
| | - Gabriele Buda
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (G.B.); (M.P.)
| | - Mario Petrini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (G.B.); (M.P.)
| | - Stefano Berrettini
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy; (D.D.); (F.F.); (S.B.)
| | - Mohammed Jasim Uddin
- Department of Chemistry, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA;
| | - Serena Danti
- The BioRobotics Intitute, Scuola Superiore Sant’Anna, 56024 Pontedera, Italy;
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy;
| | - Paolo Parchi
- Department of Translational Research and of New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (C.R.); (P.P.)
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Zaszczyńska A, Gradys A, Sajkiewicz P. Progress in the Applications of Smart Piezoelectric Materials for Medical Devices. Polymers (Basel) 2020; 12:E2754. [PMID: 33266424 PMCID: PMC7700596 DOI: 10.3390/polym12112754] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 12/19/2022] Open
Abstract
Smart piezoelectric materials are of great interest due to their unique properties. Piezoelectric materials can transform mechanical energy into electricity and vice versa. There are mono and polycrystals (piezoceramics), polymers, and composites in the group of piezoelectric materials. Recent years show progress in the applications of piezoelectric materials in biomedical devices due to their biocompatibility and biodegradability. Medical devices such as actuators and sensors, energy harvesting devices, and active scaffolds for neural tissue engineering are continually explored. Sensors and actuators from piezoelectric materials can convert flow rate, pressure, etc., to generate energy or consume it. This paper consists of using smart materials to design medical devices and provide a greater understanding of the piezoelectric effect in the medical industry presently. A greater understanding of piezoelectricity is necessary regarding the future development and industry challenges.
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Affiliation(s)
- Angelika Zaszczyńska
- Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawinskiego 5b St., 02-106 Warsaw, Poland; (A.G.); (P.S.)
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