Room Temperature Surfactant Assisted Crystal Growth of Silver Nanoparticles to Nanoribbons
Bibliographic record
Abstract
This study presents a simple and systematic growth of Ag nanoparticles (NPs) to nanoribbons by changing the hydrophobicity parameter of a series of cationic Gemini surfactants by using seed-mediated approach in aqueous phase at room temperature. At lowest hydrophobicity of a Gemini surfactant (i.e., dimethylene bis(decyldimethyl-ammonium bromide), 10-2-10), Ostwald ripening process was observed which caused fusion among growing Ag NPs. This process was quite prominent when 0.5 ml of Ag seed solution was used for the growth process but weakened as the amount of seed decreased to 0.125 ml. Similar behavior was demonstrated by Au NPs studied for comparison. The nanostructures were characterized by TEM, XRD, and UV-visible measurements. Further increase in the hydrophobicity of a Gemini surfactant from 10-2-10 to dimethylene bis(tetradecyldimethylammonium bromide) (14-2-14) through dimethylene bis(dodecyldimethylammonium bromide) (12-2-12), resulted in the participation of threads like micelles and liquid crystalline phase as soft-templates towards the nanoribbon formation. Fine polycrystalline Ag nanoribbons were obtained in the presence 14-2-14 and were characterized by the HRTEM and EDX analysis.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| 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".