Author

Peng-Fei Zhu

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Preprint Sep 2026

Spectral Geometry and Dispersion-Constrained Projection of Diffusive Fields

Diffusive fields obey operator-imposed relations between spatial structure and temporal decay, yet conventional spectral filtering selects components primarily according to frequency or wavenumber magnitude. Here we show that the diffusion operator defines a spectral geometry in the joint space of spatial wavenumber an...

Peng-Fei Zhu, J. Lecompagnon, P. Hirsch et al. · 1 citation

Open access Sep 2026

Geometry adaptive photothermal coherence tomography and its application in additively manufactured metal structures

Infrared thermography has been widely applied in aerospace and other technological fields. However, constrained by perspective projection effects and the diffusive, non-wave nature of heat propagation, conventional methods are limited to generating 2D projections that reflect depth-integrated information, primarily sur...

Rong-Bang Wang, Peng-Fei Zhu, Hai Zhang et al. · International Journal of Ext... · 1 citation

#machine learning Preprint Sep 2026

Can Deep Learning Achieve Cross-Physics Mapping?

These findings demonstrate that deep learning can establish useful mappings between distinct physical modalities on a shared latent manifold, while the achievable accuracy remains fundamentally constrained by the direction-dependent information content of the governing physics.

Peng-Fei Zhu, J. Lecompagnon, Mathias Ziegler · 0 citations