التفاصيل البيبلوغرافية
| العنوان: |
Plasmon transport and its guiding in graphene. |
| المؤلفون: |
Kumada, N1 kumada.norio@lab.ntt.co.jp, Dubourget, R1, Sasaki, K1, Tanabe, S1, Hibino, H1, Kamata, H2, Hashisaka, M2, Muraki, K1, Fujisawa, T2 |
| المصدر: |
New Journal of Physics. Jun2014, Vol. 16 Issue 6, p1-1. 1p. |
| مصطلحات موضوعية: |
*GRAPHENE, *PLASMONS (Physics), *ELECTRIC measurements, *PLASMA waveguides, *ELECTRODES, *CARRIER density, *REFRACTIVE index |
| مستخلص: |
Transport of plasmons in graphene has been investigated by time-resolved electrical measurements. We demonstrate that the velocity v (or the refractive index ) and the characteristic impedance Z of the plasmon mode can be tuned through the carrier density. By exploiting the Z tunability, we present a gate-defined plasmonic waveguide. An important advantage of the gate-defined waveguide is dynamical switching of guiding characteristics with the gate voltages. One can tailor the patterns of gate electrodes to define two output waveguides branching off from a source waveguide, and the output waveguide can be switched by changing the gate voltages. Indeed, we show the routing in a Y-shaped channel: the path for the plasmon transmission can be selected by tuning Z of each path. These results can be well reproduced by simulation, encouraging the design of graphene-based plasmonic devices. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
Full Text Finder