Efficient and Easy to Fabricate Silicon-Based Planar Micro-Coils for Wireless Power Transfer Applications
Why this work is in the frame
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Bibliographic record
Abstract
Wireless power transfer (WPT) has been recognized as a feasible solution to expand the lifespan of wearable and implants. This study proposes two topologies for planar micro-coils, namely, non-spiral and quasi-spiral, for WPT applications. The proposed micro-coils require a simple microfabrication process, due to the positioning of both terminals outside the coil loops at the same layer. Advantageously, by using a single mask microfabrication process the micro-coils can be fabricated on the silicon substrate. By simulation, we demonstrate that in the non-spiral topology the electrical potential and magnetic flux density distribute uniformly. For comparison purposes, a commercial circular wound coil which occupies 4.35 times higher volume in a circuit than the fabricated micro-coils is employed. Experimental results indicate that the non-spiral and quasi-spiral micro-coils wirelessly receive 3.6 and 1.3 times higher power, respectively, than the commercial coil. This efficiency is not confined to the amount of the scavenged power, while the micro-coils can effectively and efficiently charge a super-capacitor in a shorter period. Furthermore, the capability of the micro-coils to re- charge battery of a vital sign monitoring wearable is demonstrated. The ability to integrate the micro-coils in wearables and implantable medical devices will enable body-worn or implanted systems to be powered or recharged wirelessly while keeping their size miniaturized.
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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 | 0.000 | 0.000 |
| 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 it