View in EDS HTML Full Text PDF Full Text

Performance enhancement of flexoelectric energy harvester by structural design.

Saved in:
Bibliographic Details
Title: Performance enhancement of flexoelectric energy harvester by structural design.
Authors: Yang, Shasha1,2,3 (AUTHOR), Yang, Qihao1 (AUTHOR), Zhang, Chunli4 (AUTHOR), Kong, Yifan4 (AUTHOR) kong.yifan@zju.edu.cn, Li, Yuanyuan5 (AUTHOR) liyyhit@163.com, Lu, Tianjian2 (AUTHOR), Shen, Cheng2,3 (AUTHOR) cshen@nuaa.edu.cn
Source: International Journal of Smart & Nano Materials. Dec2025, Vol. 16 Issue 4, p908-928. 21p.
Subjects: Structural design, Power density, Electromechanical effects, Cantilevers, Frequencies of oscillating systems, Finite element method, Energy harvesting, Mechanical efficiency
Abstract: How to increase the output power and broaden its operating band is the key issue for the new flexoelectric energy harvester (FEH) to really move toward application. This study proposes a novel two-stage stepped variable-thickness cantilever beam FEH, differing from conventional uniform designs. Theoretical modeling, finite element analysis, and experimental validation are presented. The energy function is obtained by segmenting the flexoelectric cantilever beam according to the assumptions of Euler-Bernoulli beam and then discretized using the Galerkin method. Then, the Lagrange equations are employed to introduce the electromechanical coupling equations for the FEH. Steady-state response equations are obtained for harmonic excitation. Results demonstrate voltage and power density peak at resonance. Optimal matching impedance exists; power density near this impedance increases as flexoelectric layer thickness decreases, showing a significant size effect. Compared to uniform beams, the proposed FEH achieves a 71.8% reduction in first natural frequency and a 93.9-fold increase in power density. This work provides novel structural design strategies and theoretical guidance for high-performance FEHs. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Smart & Nano Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 189730544
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Performance enhancement of flexoelectric energy harvester by structural design.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Shasha%22">Yang, Shasha</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Qihao%22">Yang, Qihao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Chunli%22">Zhang, Chunli</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kong%2C+Yifan%22">Kong, Yifan</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> kong.yifan@zju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Yuanyuan%22">Li, Yuanyuan</searchLink><relatesTo>5</relatesTo> (AUTHOR)<i> liyyhit@163.com</i><br /><searchLink fieldCode="AR" term="%22Lu%2C+Tianjian%22">Lu, Tianjian</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shen%2C+Cheng%22">Shen, Cheng</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<i> cshen@nuaa.edu.cn</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Smart+%26+Nano+Materials%22">International Journal of Smart & Nano Materials</searchLink>. Dec2025, Vol. 16 Issue 4, p908-928. 21p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Structural+design%22">Structural design</searchLink><br /><searchLink fieldCode="DE" term="%22Power+density%22">Power density</searchLink><br /><searchLink fieldCode="DE" term="%22Electromechanical+effects%22">Electromechanical effects</searchLink><br /><searchLink fieldCode="DE" term="%22Cantilevers%22">Cantilevers</searchLink><br /><searchLink fieldCode="DE" term="%22Frequencies+of+oscillating+systems%22">Frequencies of oscillating systems</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+harvesting%22">Energy harvesting</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+efficiency%22">Mechanical efficiency</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: How to increase the output power and broaden its operating band is the key issue for the new flexoelectric energy harvester (FEH) to really move toward application. This study proposes a novel two-stage stepped variable-thickness cantilever beam FEH, differing from conventional uniform designs. Theoretical modeling, finite element analysis, and experimental validation are presented. The energy function is obtained by segmenting the flexoelectric cantilever beam according to the assumptions of Euler-Bernoulli beam and then discretized using the Galerkin method. Then, the Lagrange equations are employed to introduce the electromechanical coupling equations for the FEH. Steady-state response equations are obtained for harmonic excitation. Results demonstrate voltage and power density peak at resonance. Optimal matching impedance exists; power density near this impedance increases as flexoelectric layer thickness decreases, showing a significant size effect. Compared to uniform beams, the proposed FEH achieves a 71.8% reduction in first natural frequency and a 93.9-fold increase in power density. This work provides novel structural design strategies and theoretical guidance for high-performance FEHs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of Smart & Nano Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=189730544
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/19475411.2025.2592544
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 21
        StartPage: 908
    Subjects:
      – SubjectFull: Structural design
        Type: general
      – SubjectFull: Power density
        Type: general
      – SubjectFull: Electromechanical effects
        Type: general
      – SubjectFull: Cantilevers
        Type: general
      – SubjectFull: Frequencies of oscillating systems
        Type: general
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Energy harvesting
        Type: general
      – SubjectFull: Mechanical efficiency
        Type: general
    Titles:
      – TitleFull: Performance enhancement of flexoelectric energy harvester by structural design.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yang, Shasha
      – PersonEntity:
          Name:
            NameFull: Yang, Qihao
      – PersonEntity:
          Name:
            NameFull: Zhang, Chunli
      – PersonEntity:
          Name:
            NameFull: Kong, Yifan
      – PersonEntity:
          Name:
            NameFull: Li, Yuanyuan
      – PersonEntity:
          Name:
            NameFull: Lu, Tianjian
      – PersonEntity:
          Name:
            NameFull: Shen, Cheng
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 12
              Text: Dec2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 19475411
          Numbering:
            – Type: volume
              Value: 16
            – Type: issue
              Value: 4
          Titles:
            – TitleFull: International Journal of Smart & Nano Materials
              Type: main
ResultId 1