Surface scattering and band gaps in rough waveguides and nanowires.
- Others:
- Fachbereich Physik [Marburg] ; Philipps Universität Marburg = Philipps University of Marburg
- Laboratoire de physique de la matière condensée (LPMC) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)
- Institute for Theoretical Physics ; Vienna University of Technology (TU Wien)
Description
The boundaries of waveguides and nanowires have drastic influence on their coherent scattering properties. Designing the boundary profile is thus a promising approach for transmission and band-gap engineering with many applications. By performing an experimental study of microwave transmission through rough waveguides we demonstrate that a recently proposed surface scattering theory can be employed to predict the measured transmission properties from the boundary profiles and vice versa. A new key ingredient of this theory is a scattering mechanism which depends on the squared gradient of the surface profiles. We demonstrate the nontrivial effects of this scattering mechanism by detailed mode-resolved microwave measurements and numerical simulations.
Abstract
International audience
Additional details
- URL
- https://hal.archives-ouvertes.fr/hal-00771340
- URN
- urn:oai:HAL:hal-00771340v1
- Origin repository
- UNICA