52 citations · 302 across the 17 of their papers we have counts for
17 papers
Electromagnetic fields between moving mirrors: Singular waveforms inside Doppler cavities
Theodoros T. Koutserimpas, Constantinos Valagiannopoulos
Phenomena of wave propagation in dynamically varying structures have reemerged as the temporal variations of the medium's properties can extend the possibilities for electromagneti…
Nanotubes as Sinks for Quantum Particles
Constantinos Valagiannopoulos
Nanotubes with proper thickness, size and texture make ultra-efficient sinks for the quantum particles traveling into specific background media. Several optimal semiconducting cyli…
Maximal Interaction of Electromagnetic Radiation with Corona-Virions
Constantinos Valagiannopoulos, Ari Sihvola
Absorption and scattering of the impinging electromagnetic waves are the two fundamental operations describing the energy exchange of any, organic or inorganic, particle with its e…
Metasurface-Coated Devices: A New Paradigm for Energy-Efficient and Secure 6G Communications
Theodoros A. Tsiftsis, Constantinos Valagiannopoulos, Hongwu Liu +2
The sixth-generation (6G) era comes with the challenge of offering highly energy-efficient and autonomous communications securely. In this direction, we report energy efficiency (E…
Enhanced stability, bistability, and exceptional points in saturable active photonic couplers
Yertay Zhiyenbayev, Yannis Kominis, Constantinos Valagiannopoulos +2
A generic photonic coupler with active and lossy parts, gain saturation and asymmetric characteristics is examined. Saturable activity is shown to be able to enhance the overall st…
Metasurface-Enabled Interference Suppression at Visible-Light Communications
Constantinos Valagiannopoulos, Theodoros A. Tsiftsis, Vassilios Kovanis
Light can be used for wireless information transmission apart from illumination; that is the key idea behind visible-light communication (VLC), one of the disruptive technologies o…