Covert Information Storage and Encryption Using Temporal Emissions from Lanthanide-Doped LiYF<sub>4</sub> Nanoparticles
Bibliographic record
Abstract
The long-lived excited state lifetimes from lanthanide ions add a temporal dimension to the two spatial dimensions used in printed information storage devices. A system using lanthanide-doped LiYF 4 nanoparticles was designed, where a pattern and mask emit in the same region of the visible spectrum but with different lifetimes. After excitation has ceased, the emission from the mask decays, allowing the pattern to be imaged. A pattern employing Eu 3+ -doped nanoparticles was masked using CsMnCl 3 nanoparticles, and a pattern using LiYF 4:Yb 3+, Ho 3+ upconverting nanoparticles was masked using LiYF 4:Yb 3+, Er 3+ nanoparticles. This demonstrates a method to enhance the encryption capacity of information storage devices that rely on lanthanide luminescence.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.001 |
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".