Microwave absorption by nanoresonator vibrations tuned with surface modification
Institute of Photonics and Electronics, The Czech Academy of Sciences - Prague, Czechia
Received: 2 April 2016
Accepted: 5 September 2016
Elucidating the physical and chemical parameters that govern viscous damping of nanoresonator vibrations and their coupling to electromagnetic radiation is important for understanding the behavior of matter at the nanoscale. Here we develop an analytical model of microwave absorption of a longitudinally oscillating and electrically polar rod-like nanoresonator embedded in a viscoelastic fluid. We show that the slip length, which can be tuned via surface modifications, controls the quality factor and coupling of nanoresonator vibration modes to microwave radiation. We demonstrate that the larger slip length brings the sharper frequency response of the nanoresonator vibration and electromagnetic absorption. Our findings contribute to design guidelines of fluid embedded nanoresonator devices.
PACS: 46.40.Ff – Resonance, damping, and dynamic stability / 84.40.-x – Radiowave and microwave (including millimeter wave) technology / 47.10.-g – General theory in fluid dynamics
© EPLA, 2016