Void nucleation at a sequentially plasma-activated silicon/silicon bonded interface
Why this work is in the frame
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Bibliographic record
Abstract
Two 4 inch silicon wafers were directly bonded using a sequentially plasma-activated bonding method (i.e. O2 reactive ion etching (RIE) plasma followed by N2 microwave (MW) radicals) at room temperature. The bonded wafers were annealed from 200 to 900 °C in order to explore the nucleation of voids at the interface. The plasma-induced void nucleation was dominated by O2 RIE power over O2 RIE activation time. The thermal-induced void nucleation occurred preferentially at the plasma-induced defect sites. The nucleation of void density was quantitatively determined and explained using high-resolution transmission electron microscopy observations. The electron energy loss spectroscopy results revealed the existence of silicon oxide at the bonded interface. The reduction in bonding strength after annealing at high temperature is correlated to the increase in void density. The contact angle and surface roughness of the sequentially plasma-treated surfaces have been observed to explain the nucleation of voids and the reduction of bonding strength. The plasma-induced defect sites such as nanopores and craters have been identified using an atomic force microscope.
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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 | 0.000 | 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 | 0.001 |
| 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 it