FDTD-Compatible broadband surface impedance boundary conditions for graphene
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Bibliographic record
Abstract
Graphene is a material that has been the focus of much academic interest for its unique material properties. As understanding of graphene improves and fabrication of graphene based devices matures, there is a growing need for electromagnetic simulations of graphene to aid device design. A finite-difference time domain (FDTD) model of graphene is useful for characterizing relevant geometries over a wide range of frequencies, yet limited by the excessive computational resources needed to model this essentially two-dimensional lossy, dispersive medium. A natural alternative is the use of a broadband surface impedance boundary condition (SIBC) that includes both the inter and the intraband conductivity of graphene. This SIBC is developed using a vector-fitting extracted rational function expansion of graphene's surface conductivity, mapped into the time-domain and implemented as a system of field update equations.
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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 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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