.

Thursday, January 19, 2012

Efficient optical trapping using small arrays of plasmonic nanoblock pairs

Yoshito Tanaka and Keiji Sasaki

We report that a small two-dimensional array of gold nanoblock pairs separated by a nanometric gap significantly improves the performance of optical trapping compared to a single nanoblock pair. The array of 4 × 4 pairs suppresses the Brownian motion of a trapped 1 μm diameter particle by a factor of six compared to the single pair. In addition, the array enables particle trapping for a longer period of time. These results are essential for biological applications where intense optical irradiation is a concern.

DOI

No comments: