Publications by authors named "Timothy D Eales"
In this work we study the nature of the band gap in GeSn alloys for use in silicon-based lasers. Special attention is paid to Sn-induced band mixing effects. We demonstrate from both experiment and ab-initio theory that the (direct) Γ-character of the GeSn band gap changes continuously with alloy composition and has significant Γ-character even at low (6%) Sn concentrations.
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- The study aims to simulate mammography images of the CDMAM phantom and analyze the coefficient of variation (CoV) in threshold gold thickness measurements.
- The method involved characterizing noise and sharpness in two mammography systems, validating the simulation against real images, and assessing CoVs using various image sets.
- Results indicated no significant differences between real and simulated images for threshold thickness, though CoV varied, especially for details near the phantom's edges; implications for European guidelines on mammography detail are highlighted.