5 papers
Time- and frequency-domain study for electron beams penetrating dielectric nanospheres: fingerprints of Cherenkov and transition radiation
Wenhua Zhao, Christos Tserkezis, N. Asger Mortensen +1
We present a theoretical study of Cherenkov and transition radiation for swift electron beams penetrating dielectric nanospheres using material models of different sophistication.…
Feedback cooling of fermionic atoms in optical lattices
Wenhua Zhao, Ling-Na Wu, Francesco Petiziol +1
We discuss the preparation of topological insulator states with fermionic ultracold atoms in optical lattices by means of measurement-based Markovian feedback control. The designed…
Relativistic electron energy-loss spectroscopy in cylindrical waveguides and holes
Ãlvaro RodrÃguez Echarri, Wenhua Zhao, Kurt Busch +1
Swift electrons passing near or through metallic structures have proven to be an excellent tool for studying plasmons and other types of confined optical modes involving collective…
Real-time surface plasmon polariton propagation in silver nanowires
Wenhua Zhao, Ãlvaro RodrÃguez Echarri, Alberto Eljarrat +7
Electron microscopy techniques such as electron energy-loss spectroscopy (EELS) facilitate the spatio-spectral characterization of plasmonic nanostructures. In this work, a time-de…
Electron beams traversing spherical nanoparticles: analytic and numerical treatment
P. Elli Stamatopoulou, Wenhua Zhao, Ãlvaro RodrÃguez Echarri +4
We present an analytic, Mie theory-based solution for the energy-loss and the photon-emission probabilities in the interaction of spherical nanoparticles with electrons passing nea…