Polarization‐Dependent Color Modulation in Electrodeposited Cellulose Nanocrystals and Birefringent Multilayers
Bibliographic record
Abstract
Abstract Cellulose nanocrystals (CNCs) can self‐organize into a chiral nematic liquid crystal phase with a left‐handed helical arrangement, resulting in structurally intrinsic photonic properties in the dry state. These include iridescence and the selective reflection of left circular polarized light, where the wavelength is typically defined by the surface chemistry and charge of the CNCs before self‐assembly. This work demonstrates how passive and dynamic stimulation can modulate the reflected wavelength across the entire visible light range. While the former is achieved through ion exchange at the CNC surface and electrophoretic deposition, the latter can be achieved by combining CNC layers with a thin‐film heater. Further, the multilayer electrodeposited CNC films are combined with a birefringent polypropylene tape as a retardation plate to enable reflection of both left‐handed and right‐handed circularly polarized light (LCPL and RCPL, respectively). This architecture allows various colors in LCPL and RCPL channels to be obtained, depending on the number of layers and the initial photonic bandgap conditions of the CNC films, which will not be possible with regular self‐assembled CNC films. The results obtained demonstrate the potential of CNC multilayer birefringent structures to be applied in photonics, imaging, sensing, and information processing.
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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 | 0.001 |
| 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".