Reversible Photochromism and Multicolor Luminescence Modulation for X‐Ray Detection and Secure Information Encryption
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract Conventional X‐ray‐responsive materials face significant limitations including instability, complex processing, low resolution, or single‐mode signaling, which hinder advanced X‐ray detection, imaging, and anti‐counteferting. Addressing these challenges, a comprehensive investigation is conducted on multifunctional Eu 3+ ‐doped Gd 2 SiO 5 , a material that combines photochromism with radioluminescence and photoluminescence. Through experimental and theoretical analyses, the reversible X‐ray‐induced photochromism (arising from oxygen vacancy‐related color centers) and tunable multicolor emission (from self‐trapped exciton states and Eu 3+ transitions) are revealed. These mechanisms enable dual‐mode, linear optical responses to X‐ray dose via dynamic absorption and emission modulation. The optimized phosphor achieves high light yield (47041 photons MeV −1 ), high spatial resolution, and stability under harsh conditions. Integration into flexible PDMS films facilitates high‐resolution X‐ray imaging devices. Critically, by leveraging intrinsic multicolor luminescence, a prototype of selective information encryption using optical filters and decryption via RGB color channel separation is demonstrated. These findings highlight the versatility of Gd 2 SiO 5 :Eu 3+ phosphors and their potential to drive innovations in next‐generation X‐ray imaging, sensing, and security technologies.
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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 | 0.001 |
| 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