Programmed ripening of nanoparticles using a DNA template
Bibliographic record
Abstract
Nanoparticle (NP) ripening is a process where energetically favored larger 8 particles grow at the expense of smaller ones: while important in NP synthesis, it is often difficult to control during NP applications. Here, we unveil a new Contact-dependent, Localized Galvanic Ripening (CLGR) mechanism that enables precise control of NP ripening in solution. As neighboring silver NPs on a DNA origami template grow homogeneously to the point of making contact, the subtle size-dependent electrochemical potential differences of the NPs promote one silver shell to erode and redeposit locally onto the adjacent NP, leading to asymmetric structures. The unique on/off control through NP contact in CLGR presents a strategy to program the erosion and growth of specific NPs in a construct, which we exploit to synthesize customized heterogeneous core-shell NP structures with pre-designed plasmonic properties. CLGR is an essential phenomenon to consider for future nanodevice and nanophotonics designs.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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".