Deuterium nuclear-magnetic-resonance study of a chiral smectic-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>C</mml:mi><mml:mo>*</mml:mo></mml:msup></mml:math>phase
Bibliographic record
Abstract
This study reports deuterium nuclear-magnetic-resonance (NMR) spectra collected at 61.4MHz in the chiral smectic- C phase of liquid crystal 4{'}(octyloxy)-d{17} biphenyl-4- yl2 -chloro-3-methylpentanoate (BP8Cl). By using a goniometer probe, the oriented sample was rotated to collect spectra at different rotation (theta) angles. These spectra were simulated to gain information on solitonlike distortions in the helical superstructure. The Landau theory was adopted to study the distortion of the helix by the NMR magnetic field. Deuterium two-dimensional exchange experiments were also used on the aligned sample at theta=15 degrees to obtain dynamic parameters through the spectral simulation. The interlayer diffusion constants in the SmC{*} phase were estimated from a proton T(1) dispersion study. The pitch length of BP8Cl is estimated to be circa 2-3 microns at one temperature.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.003 |
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".