THE EFFECT OF PERIODICITY IN GaN NANOROD ARRAYS FOR HYPERSONIC IMAGING
نویسندگان
چکیده
Gold nanodisk arrays on the upper surface of GaN nanorods were developed with the aim of achieving hypersonic imaging with a detection frequency above 10GHz. In this talk, we report the interesting phenomenon that the hypersonic signal detected by a single gold nanodisk in this structure is dependent on the array periodicity and rod length. We not only investigate the transport behavior of hypersonic-frequency acoustic phonons at the interface between a bulk material and a periodic nanostructure, but also suggest that the effects of the periodicity and nanorod length need to be taken into consideration for the design of future hypersonic imaging arrays.
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