Relaxor ferroelectric polymer exhibits ultrahigh electromechanical coupling at low electric field-Reference-Cited by-同舟云学术

Relaxor ferroelectric polymer exhibits ultrahigh electromechanical coupling at low electric field

Published:2022-03-25 Issue:6587 Volume:375 Page:1418-1422
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Chen Xin¹^ORCID,Qin Hancheng²^ORCID,Qian Xiaoshi³^ORCID,Zhu Wenyi⁴^ORCID,Li Bo⁵^ORCID,Zhang Bing²^ORCID,Lu Wenchang²^ORCID,Li Ruipeng⁶,Zhang Shihai⁵,Zhu Lei⁷^ORCID,Domingues Dos Santos Fabrice⁸^ORCID,Bernholc J.²^ORCID,Zhang Q. M.¹⁴^ORCID

Affiliation:

1. Department of Materials Science and Engineering, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.

2. Department of Physics, North Carolina State University, Raleigh, NC27695-7518, USA.

3. Interdisciplinary Research Centre for Metamaterials and Intelligent Systems, State Key Laboratory of Mechanical System and Vibration, and MOE Key laboratory for Power Machinery and Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China.

4. School of Electrical Engineering and Computer Science, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.

5. PolyK Technologies, State College, PA 16801, USA.

6. National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA.

7. Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106-7202, USA.

8. Arkema-Piezotech, 92700 Colombes, France.

Abstract

Electromechanical (EM) coupling—the conversion of energy between electric and mechanical forms—in ferroelectrics has been used for a broad range of applications. Ferroelectric polymers have weak EM coupling that severely limits their usefulness for applications. We introduced a small amount of fluorinated alkyne (FA) monomers (<2 mol %) in relaxor ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (PVDF-TrFE-CFE) terpolymer that markedly enhances the polarization change with strong EM coupling while suppressing other polarization changes that do not contribute to it. Under a low–dc bias field of 40 megavolts per meter, the relaxor tetrapolymer has an EM coupling factor ( k 33 ) of 88% and a piezoelectric coefficient ( d 33 ) >1000 picometers per volt. These values make this solution-processed polymer competitive with ceramic oxide piezoelectrics, with the potential for use in distinct applications.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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