Self-Organized Supported Clusters of <scp>l</scp>-Methionine
Bibliographic record
Abstract
Fundamental understanding of self-organization and integration of biomaterials on semiconductors is essential to the development of biological electronic devices. While formation of supramolecular structures by hydrogen bonding and/or electrostatic forces appears common on metal surfaces, the availability of dangling bonds on semiconductor surfaces introduces new bonding mechanisms that could disrupt the self-organization of basic biomolecules. Here, we demonstrate self-organization of l -methionine on Si(111)7×7 at room temperature into a Y-shaped trimer, as the first “perfect-match” supported cluster reported to date. The Y trimer is found to be securely attached within the 7×7 half unit cell and is driven by intralayer hydrogen bonding among the unattached carboxylic acid groups in a ring configuration. Its unique cluster structure is verified by ultra-large-scale density functional theory calculations with van der Waals corrections. The Y trimer (key) offers a remarkably stable “lock-and-key” fit to the 7×7 unit cell (lock) for biofunctionalization and molecular templating.
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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 | 0.000 | 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 | 0.000 |
| 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)
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".