Piezo-/ferroelectric phenomena in biomaterials: A brief review of recent progress and perspectives
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ly 2020 Vol. 63 No. 7: 278701 https://doi.org/10.1007/s11433-019-1500-y
Piezo-/ferroelectric phenomena in biomaterials: A brief review of recent progress and perspectives 1
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Yao Sun , KaiYang Zeng , and Tao Li 1
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Department of Mechanical Engineering, National University of Singapore, Singapore 546080, Singapore; Center for Spintronics and Quantum Systems, State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China Received November 10, 2019; accepted December 18, 2019; published online March 13, 2020
There have been overwhelming observations of piezo-/ferroelectric phenomena in many biological tissues and macromolecules, boosting the development of bio-based smart devices and the applications using electromechanical coupling phenomena in biological systems. The electromechanical coupling is believed to be responsible for various biophysical behaviors and remarkable biomaterial properties. Despite the abundant phenomenal observations, the fundamental understanding of the piezo-/ ferroelectric effect in biomaterials/systems and the rational design of biobased macroscopic materials with desired piezoelectric responses are still scarce. In this review, we firstly present remarkable historical events on the development of piezo-/ferroelectricity in biomaterials, followed by a brief overview of the fundamental physics of piezo-/ferroelectricity. The developments of biopiezo-/bioferroelectricity in protein-based biomaterials and their implications are highlighted subsequently. In experimental studies, to identify the intrinsic piezo-/ferroelectric properties from other effects or artifacts is usually elusive. This issue is also addressed and discussed in detail, especially using piezoelectric force microscopy (PFM) and spectroscopy techniques to investigate the local piezo-/ferroelectric phenomena in nanostructured materials are highlighted emphatically. biomaterials, electromechanical coupling, piezoelectric, ferroelectric, piezoresponse force microscopy PACS number(s): 47.55.nb, 47.20.Ky, 47.11.Fg Citation:
Y. Sun, K. Y. Zeng, and T. Li, Piezo-/ferroelectric phenomena in biomaterials: A brief review of recent progress and perspectives, Sci. China-Phys. Mech. Astron. 63, 278701 (2020), https://doi.org/10.1007/s11433-019-1500-y
1 Introduction Many biomimetic materials are potential candidates for energy harvesting and biocompatible sensors in living organisms. The rich natural properties of biomaterials and biomacromolecules have inspired researchers to unravel their structure-property-functionality relationships and to develop rational strategies for designing smart bio-inspired devices [1-4]. For example, the biomimetic self-assembling peptides can produce a variety of structures, which enables
the design for novel electronic, photonic, and energy functionalities based on the supramolecular interactions and assembled molecular structures [5]. Compared to the traditional inorganic materials, biomaterials usually exhibi
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