Growth and characterization of semi-organic nonlinear optical crystals of <scp>l</scp>-leucine hydrochlorobromide (LEHCBr)
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Bibliographic record
Abstract
l-Leucine hydrochlorobromide (LEHCBr), a semi-organic nonlinear optical material, was synthesized and grown as single crystal by slow evaporation method at ambient temperature. The powder X-ray diffraction pattern of the grown LEHCBr crystal was indexed and compared with single crystal X-ray diffraction data. Functional groups present in the sample were identified by FT-IR analysis. The grown crystal shows a cut off wavelength of 247 nm from the recorded UV–vis–IR spectrum. The thermal stability and melting temperature of LEHCBr were determined from TGA/DTA curves. The Vickers hardness was evaluated to be 71.9 kg/mm 2 using Vickers microhardness tester. The dielectric behavior of the crystal was studied at different temperatures. The positive photo conducting nature of the LEHCBr crystal was confirmed by photoconductivity study. The Kurtz–Perry powder study revealed the SHG efficiency of LEHCBr as 4.6 times higher than that of KDP.
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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 | 0.001 | 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)
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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