Single‐Step Generation of Flexible, Free‐Standing Arrays of Multimode Cylindrical Waveguides
Why this work is in the frame
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Bibliographic record
Abstract
Polymer matrices patterned with 3‐D waveguide circuitry are critical components of flexible photonics but cannot be fabricated through conventional, linear lithographic techniques. By exploiting the spontaneous filamentation and modulation instability (MI) of a uniform optical field in a range of silicone‐acrylate‐based photopolymerizable fluids, the authors report the generation of free‐standing arrays of cylindrical, multimode waveguides with tunable flexibility in a single, room‐temperature step. A broad, incandescent beam becomes unstable and spontaneously divides into a large population (≈10 000 cm −2 ) of microscopic filaments; each filament becomes entrapped within a self‐induced cylindrical waveguide and propagates through the medium without diverging. By spatially modulating the beam, it is possible to generate cylindrical waveguide arrays with square symmetry. By controlling the extent of cross‐linking and the relative amount of silicone surfactant in the polymerized matrix, it is possible to tune the hardness of the arrays over an order of magnitude (Shore‐OO 9 ± 5 to 94 ± 2). The authors show that flexible waveguide arrays that possess relatively low values of hardness can be reversibly compressed to up to 70% of their original lattice parameter while retaining waveguiding capacity; the arrays exhibit 100% recovery after multiple cycles of compression and decompression.
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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