Needle-free drop deposition technique for contact angle measurements of superhydrophobic surfaces
Bibliographic record
Abstract
The study of wetting characteristics of low-energy (e.g., superhydrophobic) liquid-repellent surfaces is of great importance towards optimal design of such micro/nano-engineered surfaces. The most common technique to accomplish this involves bringing a drop generated at the needle-tip close to the characterizing substrate with a goal to deposit it on the substrate, which often becomes a challenge when the surface energy of the drop-substrate combination is comparable to the needle-drop system. In this paper, we proposed a new “needle-free” drop deposition technique, which overcomes this challenge for characterization the low-energy substrates. This is achieved by placing an additional low-energy substrate above the characterizing substrate and allowing the drop-needle combination to impact on this additional substrate. This technique is not only independent of the wetting properties of the needle and the characterizing substrate but is also independent of the liquid drop properties, thereby making it a very universal technique for characterizing substrate in air medium.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 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".