About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Characterization of Materials through High Resolution Coherent Imaging
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Presentation Title |
Using Automatic Differentiation to Solve the Phase Problem in X-ray Bragg Ptychography |
Author(s) |
Tao Zhou, Mathew Cherukara, Stephan Hruszkewyzcz, Saugat kandel, Martin Holt |
On-Site Speaker (Planned) |
Tao Zhou |
Abstract Scope |
Here we describe the forward propagation in Bragg ptychography using the Takagi-Taupin Equations (TTE). We show that, when combined with Automatic Differentiation (AD), TTE can be used as a general formalism for 3D phase retrieval, applicable to both Bragg ptychography and Bragg Coherent Diffraction Imaging. Compared to conventional Fourier Transform based methods, our approach accounts for additionally refraction, absorption, interference, dynamical effects, and is applicable to any kind of weakly strained material system. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, |