1 citations · 1 across the 8 of their papers we have counts for
14 papers
Non-Hermitian Exceptional Dynamics in First-Order Heat Transport
Pengfei Zhu
Heat transport exhibits distinct regimes ranging from ballistic propagation to diffusive relaxation, traditionally described by disparate theoretical frameworks. Here, we introduce…
The Spectral Domain Snell Law in Diffusion-Wave Fields
Pengfei Zhu, Julien Lecompagnon, Philipp Daniel Hirsch +2
Snell law is traditionally regarded as a hallmark of phase-propagating phenomena such as optical, acoustic, elastic, electromagnetic, and quantum waves. In contrast, purely diffusi…
Generalized virtual wave reconstruction for vibrothermography: Overcoming the wavefront-free behavior and quantification challenges in the diffusion-wave field
Pengfei Zhu, Julien Lecompagnon, Mathias Ziegler +2
Wavefront-free behavior and the resulting quantification difficulties are intrinsic limitations of vibrothermography due to the diffusive nature of thermal fields. This work propos…
Principal Component Analysis-Based Terahertz Self-Supervised Denoising and Deblurring Deep Neural Networks
Pengfei Zhu, Stefano Sfarra, Hai Zhang +4
Terahertz (THz) systems inherently introduce frequency-dependent degradation effects, resulting in low-frequency blurring and high-frequency noise in amplitude images. Conventional…
Field-material coupled neural network: A novel prior-free and data-free inverse problem solver for extracting complex dielectric constant in terahertz band
Pengfei Zhu, Stefano Sfarra, Elena Pivarciova +2
Accurate extraction of the complex dielectric constant in the terahertz (THz) band is essential for material characterization and non-destructive evaluation yet remains challenging…
Non-Invasive Diagnosis for Clubroot Using Terahertz Time-Domain Spectroscopy and Physics-Constrained Neural Networks
Pengfei Zhu, Jiaxu Wu, Alyson Deslongchamps +2
Clubroot, a major soilborne disease affecting canola and other cruciferous crops, is characterized by the development of large galls on the roots of susceptible hosts. In this stud…