Two shear flow regimes in nematic liquid crystals: Near a charged surface and in the bulk
Bibliographic record
Abstract
Laminar and tumbling flow regimes in a high shear flow, as well as transition from a flow alignment regime to a tumbling situation are investigated in the polar liquid crystal p-n-hexyloxybenzylidenep′-aminobenzonitrile (HBAB) near a charged surface. The relaxation of the alignment angle θ(τ) to its equilibrium θbulk is calculated using the conventional Erickson–Leslie theory for the case of homeotropic alignment of HBAB at a charged indium tin oxide-coated glass plate and for the temperature range in which HBAB exhibits a nematic phase. In accordance with earlier Couette flow experiments, our calculations of the relaxation process for temperatures below 365 K show that the alignment angle is characterized by relaxing to a θbulk of zero value, indicating that the steady laminar flow may break up into a tumbling flow. The nature of the hydrodynamic instability under high shear flow rates is also discussed for HBAB.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| 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 source (direct Gemma or distilled Codex), 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".