Analysis of multi-direction low-frequency vibration energy harvester using diamagnetic levitation
Bibliographic record
Abstract
This paper presents theoretical analysis and verification of a micro vibration energy harvester based on magnetic levitation using diamagnetic structures. The analysis verifies that diamagnetic material experiences anti-magnetic force in magnetic field and that it can be used for stable magnetic levitation. This study proposes a novel design that is comprised of a lifting permanent magnet, an upper pyrolytic graphite sheet, a floating permanent magnet, and a lower pyrolytic graphite sheet, with copper spiral coils formed on the two pyrolytic graphite sheets. The gravity of the floating permanent magnet is balanced by the attractive force between the lifting and floating magnets. The diamagnetic force exerted on the levitated magnet by the two pyrolytic graphite sheets serves as a restoring force, forcing the floating permanent magnet return to the equilibrium position. Through finite element analysis, the maximum movable range of the floating magnet is defined to be 1.3 mm. Comparative analysis of the attractive magnetic force and the anti-magnetic force is performed to determine the key parameters of the structure. The characteristics of vertical and horizontal motion of the magnet are also studied in detail. The results validate the effectiveness of the proposed design for harvesting multi-dimensional, low-frequency vibration energy. The diamagnetic levitation mechanism without conventional mechanical suspensions eliminates loss of vibration energy and resultant thermal issues. The system is potentially promising, through further miniaturization, in providing sustainable power for micro-electro-mechanical systems.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".