High-Qplasmonic resonators based on metal split nanocylinders

In this paper we report on a detailed investigation of the quality $Q$ factor exhibited by metal-nanostrip resonators with a bent axis. A detailed comparison of the $Q$ with the quasistatic limit value demonstrates that under a large bending of the strip axis the resulting split-cylinder nanoresonators exhibit a $Q$ that is exceeding the quasistatic $Q$ in the near infrared. Also, a possible application of high-$Q$ split-cylinder nanoresonators as high-sensitive plasmonic sensors is proposed.