A more biofriendly piezoelectric material
成果类型：
Editorial Material
署名作者：
Wang, Linping; Li, Run-Wei
署名单位：
Chinese Academy of Sciences; Ningbo Institute of Materials Technology & Engineering, CAS; Chinese Academy of Sciences; Ningbo Institute of Materials Technology & Engineering, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
刊物名称：
SCIENCE
ISSN/ISSBN：
0036-8369
DOI：
10.1126/science.ado5706
发表日期：
2024-03-29
页码：
1416-1416
关键词：
摘要：
Devices implanted in the human body for sensing conditions and delivering treatments must be biosafe, biocompatible, and biodegradable. These requirements make piezoelectric materials attractive for their design because they convert mechanical force into electricity and vice versa (1). However, traditional piezoelectrics such as lead zirconate titanate are permanent, rather than transient, in nature (2, 3). Although biodegradable piezoelectrics-such as those including amino acids, collagen, and chitin constituents-have the desired properties for implantation and are immune to infection and inflammation risks (4), they suffer from weak piezoelectric performance (5). On page 1492 of this issue, Zhang et al. (6) report a simple ferroelectric molecular crystal that exhibits piezoelectricity performance that is more than 13 times greater than that of amino acid-based piezoelectric materials (7). When composited with polyvinyl alcohol (PVA), the material demonstrates high flexibility and biodegradation and biosafety in physiological environments. The finding should advance piezoelectric materials further into transplant applications.