Evidence map›Paper›PMID 34577772›Full record

ArticleMicromachines2021

Electromagnetic Vibration Energy Harvester with Tunable Resonance Frequency Based on Stress Modulation of Flexible Springs.

Yunjia Li, Chenyuan Zhou, Qi Cao, Xinyi Wang, Dayong Qiao, Kai Tao

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Micromachines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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.

Yunjia LiSchool of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.ORCID 0000-0002-5728-9795
Chenyuan ZhouSchool of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.ORCID 0000-0002-4585-4224
Qi CaoSchool of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Xinyi WangSchool of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.ORCID 0000-0002-6682-426X
Dayong QiaoMicro and Nano Electromechanical Systems Laboratory, Northwestern Polytechnical University, Xi'an 710072, China.
Kai TaoMicro and Nano Electromechanical Systems Laboratory, Northwestern Polytechnical University, Xi'an 710072, China.ORCID 0000-0003-1848-8561

Funding

National Key Research and Development Program of China 2018YFF01010902National Natural Science Foundation of China 51705405
6 · The paper itself

Abstract

This paper presents a compact electromagnetic vibrational energy harvester (EVEH) with tunable resonance frequency. The resonance frequency of the EVEH is tuned by adjusting the axial stress in the flexible polymeric springs, which is realized by physically pulling and pushing the springs. The stress tuning functionality is realized with a compact structure with small volume. The total frequency tuning range of the proposed EVEH is 56 Hz (74-130 Hz), which is 64% of the natural resonance frequency of the EVEH (88 Hz). It is found that the tensile stress increases the resonance frequency of the EVEH, while the compressive stress firstly reduces the resonance frequency and then increases the resonance frequency due to buckling.

Indexed as

polymer beamtunable resonant frequencyvibration energy harvesting

Identifiers

PMID34577772
PMCPMC8467080

What OpenQuestion holds

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LicenceCC BY
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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.