Experimental verification of sub-wavelength focusing via a holographic metallic screen
Bibliographic record
Abstract
In this paper we have experimentally demonstrated the viability of a subwavelength focusing screen, formed by placing slot antennas over a ground plane. In a proof-of-principle experiment using only 3 slots, we have focused the x-directed e-field to a FWHM of 5.2 mm (0.17-wavelength) at an image plane 4.5 mm (0.15-wavelength) from the screen at f = 10 GHz. Our measured results indicate that the screenpsilas focusing quality and the electric field intensity at the focal spot are only minimally affected by conductor losses. We have also verified that resonant coupling enhances the peak field intensity at the focal spot to a level comparable to the incident field. The loss independence and high transmitted peak intensity make our subwavelength focusing screen an attractive option for practical subwavelength focusing in the near-field.
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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 | 0.000 | 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 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".