| Autor: |
Antonelli, G. Andrew, Maris, Humphrey J., Malhotra, Sandra G., Harper, James M. E. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 3/1/2002, Vol. 91 Issue 5, p3261, 7p, 2 Diagrams, 5 Charts, 3 Graphs |
| Abstrakt: |
We report experiments in which a subpicosecond pump light pulse is used to excite vibrations in a nanostructure consisting of a periodic array of copper wires embedded in a glass matrix on a silicon substrate. The motion of the wires after excitation is detected using a time-delayed probe light pulse. From the measured data, it is possible to determine the frequencies v[sub n] and damping rates γ[sub n] of a number of the normal modes of the structure. These modes have frequencies lying in the range 1-30 GHz. By comparison of the measured v[sub n] and γ[sub n] with the frequencies and damping rates calculated from a computer simulation of the vibrations of the nanostructure, we have been able to deduce the vibration patterns of six of the normal modes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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