An improved decoupled model for spin relaxation in 4-n-alkyloxy-4′-cyanobiphenyls
Bibliographic record
Abstract
An improved decoupled model has recently been proposed by us to account for the correlated internal rotations in flexible alkyl(oxy) chains of liquid crystals. In this model, the three-bond motions in the chain are disallowed, while both gauche migration and gauche pair production can now occur in the chain. Preliminary results from the analysis of deuteron spin relaxation rates in the liquid crystal 4-n-hexyloxy-4′-cyanobiphenyl (6OCB) were encouraging. We apply this motional model to interpret the existing relaxation data of 4-n-octyloxy-4′-cyanobiphenyl and 6OCB. Transition rates for the chain dynamics are obtained for both liquid crystals in conjunction with their overall rotational diffusion constants. The derived rotational diffusion constants are compared with those obtained from dielectric relaxation studies. A consistent picture emerges in the present study for the two members of a homologous series when the order director fluctuations are included in the nematic phases of these liquid crystals.
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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) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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".