3 papers
math.NA2026
Trefftz DG Approximation of the T-Matrix for Scattering by Periodic Layered Structures
Armando Maria Monforte, Andrea Moiola, Simone Zanotto
We study the scattering of time-harmonic electromagnetic waves by periodic layered gratings, modelled by the 2D Helmholtz equation. The periodic obstacle may include penetrable and…
physics.optics2026
Arduino based interferometer stabilizer equipped with a digital lock-in amplifier
Giuseppe Emanuele Lio, Saravanan Rajamani, Alessandro Pitanti +2
Interferometric sensors are ubiquitous in precision metrology, yet their performance is fundamentally limited by environmental noise and thermal drift. To achieve maximum sensitivi…
physics.optics2025
Coherent absorption reveals colors hidden in a grey Fabry-Pérot cavity
Giuseppe E. Lio, Giulio Carotta, Lorenzo Lavista +8
Thin dielectric films are known to show distinct colors, responsible for the iridescence of various natural and artificial objects such as insect wings and soap bubbles. In the pre…