Evidence map›Paper›PMID 35417235›Full record

ArticleScience advances2022

Spontaneous and rapid electro-actuated snapping of constrained polyelectrolyte hydrogels.

Chen Yu Li, Si Yu Zheng, Xing Peng Hao, Wei Hong, Qiang Zheng, Zi Liang Wu

Abstract read
In one paragraph

Article in Science advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

  1. 3D printable tough hydrogel actuators.Materials horizons · 2026
    Review
  2. Article
  3. Article
  4. Gel-Based Ionic Circuits.Chemical reviews · 2025
    Review
  5. Review
  6. Electrically conductive "SMART" hydrogels for on-demand drug delivery.Asian journal of pharmaceutical sciences · 2025
    Review
  7. Reversible Snapping of Constrained Anisotropic Hydrogels Upon Light Stimulations.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024
    Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Review
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Chen Yu LiMinistry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0001-7260-7838
Si Yu ZhengMinistry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0001-7602-6731
Xing Peng HaoMinistry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0003-2114-7565
Wei HongDepartment of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen 518055, China.ORCID 0000-0001-6598-3456
Qiang ZhengMinistry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Zi Liang WuMinistry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.ORCID 0000-0002-1824-9563

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Venus flytrap and bladderwort, capable of rapid predation through a snapping transition, have inspired various designs of soft actuators and robots with fast actions. These designs, in contrast to their natural counterparts, often require a direct force or pressurization. Here, we report a bistable domal hydrogel structure capable of spontaneous and reversible snapping under an electric field. Unlike a mechanical force, the electric field does not drive the gel directly. Instead, it redistributes mobile ions that direct the migration of water molecules and bends the polyelectrolyte hydrogel. Subject to constraint from surrounding neutral gel, the elastic energy accumulates until suddenly released by snapping, just like the process in natural organisms. Several proof-of-concept examples, including an optical switch, a speedy catcher, and a pulse pump, are designed to demonstrate the versatile functionalities of this unit capable of articulate motion. This work should bring opportunities to devise soft robotics, biomedical devices, etc.

Identifiers

PMID35417235
PMCPMC9007498

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.