Microwave absorption by nanoresonator vibrations tuned with surface modification

0469611 - ÚFE 2017 RIV FR eng J - Journal Article
Krivosudský, Ondrej - Cifra, Michal
Microwave absorption by nanoresonator vibrations tuned with surface modification.
EPL. Roč. 115, č. 4 (2016), č. článku 44003. ISSN 0295-5075. E-ISSN 1286-4854
R&D Projects: GA ČR(CZ) GA15-17102S
Institutional support: RVO:67985882
Keywords : Resonance * Nanomechanical resonators * Oscillations
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering
Impact factor: 1.957, year: 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
Permanent Link: http://hdl.handle.net/11104/0267442