A graphene fiber’s thermal conductivity is written by its microstructure: how well the sheets align along the axis, and how completely defects are healed by high-temperature treatment. This panel sketches the two levers in the direction the literature reports — alignment sets the ceiling, graphitization decides how much of it you reach. Axes are normalized: the real numbers, from hundreds to above a thousand W m⁻¹K⁻¹, belong to the cited measurements in the article.
Model: an ILLUSTRATIVE structure–property surface k ∝ alignment × (0.15+0.85 g¹·⁶) capturing the literature’s qualitative direction — alignment as multiplier, graphitization with diminishing returns; in real fibers alignment, density and defects interact and the sliders are not independently multiplicative physical laws — NOT a fit to any dataset; measured values for specific fibers are cited in the article body. Axes normalized; schematic teaching tool, not an instrument.