Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Calvine F. Ominde"'
Publikováno v:
Nanoscale Research Letters, Vol 13, Iss 1, Pp 1-9 (2018)
Abstract Previous studies on hybrid dielectric-graphene metasurfaces have been used to implement induced transparency devices, while exhibiting high Q-factors based on trapped magnetic resonances. Typically, the transparency windows are single wavele
Externí odkaz:
https://doaj.org/article/5d8ffe3cec4f494cb3897de70c1359d4
Publikováno v:
Optics Communications. 419:114-119
All-dielectric metasurfaces offer remarkable properties including high efficiency and flexible control of the optical response. However, extreme, narrow bandwidth is a limitation that lowers applicability of these structures in photonic sensing appli
Publikováno v:
Plasmonics. 13:2081-2089
Conventional all-dielectric metasurfaces show remarkable properties including high efficiency and tunability of the optical response. However, extreme narrow bandwidth is a limitation that reduce their application in the photonic sensor devices. In t
Publikováno v:
RSC Advances. 7:37495-37501
High transmission plasmonic and all-dielectric metasurface wave plates have been reported in recent studies. However, narrow bandwidth and low polarization conversion need to be addressed to attain even better operation requirements. In this work, we
Publikováno v:
Nanoscale Research Letters, Vol 13, Iss 1, Pp 1-9 (2018)
Nanoscale Research Letters
Nanoscale Research Letters
Previous studies on hybrid dielectric-graphene metasurfaces have been used to implement induced transparency devices, while exhibiting high Q-factors based on trapped magnetic resonances. Typically, the transparency windows are single wavelength and
Publikováno v:
Applied Physics A. 123
Weak graphene plasmon is a key challenge for graphene-based metasurfaces in the visible and near-infrared regions. In this study, we have numerically designed and demonstrated a tunable, ultrathin, hybrid dual-band quarter-wave plate metasurface, whi
Autor:
Martin Neugebauer, Peter Banzer, Johnston Kalwe, Calvine F. Ominde, Gerd Leuchs, Geoffrey K. Rurimo
Publikováno v:
European Journal of Physics. 36:025011
We exploit the birefringence of cellophane to convert a linearly polarised Gaussian beam into either a radially or azimuthally polarised beam. For that, we fabricated a low-cost polarisation mask consisting of four segments of cellophane. The fast ax