| Autor: |
Erik Janzén, Hsu Cheng Hsu, Kuei-Hsien Chen, Urban Forsberg, Li-Chyong Chen, Anders Lundskog, Yu Shiung Lai, Geng Ming Hsu, Shuo Yen Tseng, Zhe Chuan Feng |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
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| Popis: |
Raman scattering of individual aluminum nitride (AlN) nanowires is investigated systematically. The axial direction of single nanowire can be rapidly verified by polarized Raman scattering. The angular dependencies of E-2(high) mode show strongly anisotropic behavior in smaller nanowires, which results from optical antenna effect. Raman enhancement (RE) per unit volume of E-2(high) increases with decreasing diameter of nanowires. Compared to the thin film, similar to 200-fold increase of RE is observed in AlN nanowires having diameter less than 50 nm, which is far beyond the quantum confinement regime. Such a large RE can be attributed to the effects of resonant cavity and stimulated Raman scattering. Funding Agencies|Ministry of Education||National Science Council||Academia Sinica in Taiwan||US AFOSR-AOARD |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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