Mass detection in viscous fluid utilizing vibrating micro- and nanomechanical mass sensors under applied axial tensile force

0486460 - FZÚ 2018 RIV CH eng J - Journal Article
Stachiv, Ivo - Fang, T.-H. - Jeng, Y.-R.
Mass detection in viscous fluid utilizing vibrating micro- and nanomechanical mass sensors under applied axial tensile force.
Sensors. Roč. 15, č. 8 (2015), s. 19351-19368. E-ISSN 1424-8220
R&D Projects: GA ČR GC15-13174J
Institutional support: RVO:68378271
Keywords : mass resonator sensors * cantilever mass sensors * resonant frequency * carbon nanotube * viscous fluid * beam under tension * mass detection in fluid
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 2.033, year: 2015

Vibrating micro- and nanomechanical mass sensors are capable of quantitatively determining attached mass from only the first three (two) measured cantilever (suspended) resonant frequencies. However, in aqueous solutions that are relevant to most biological systems, the mass determination is challenging because the quality factor (Q-factor) due to fluid damping decreases and, as a result, usually just the fundamental resonant frequencies can be correctly identified. Moreover, for higher modes the resonance coupling, noise, and internal damping have been proven to strongly affect the measured resonances and, correspondingly, the accuracy of estimated masses. In this work, a technique capable of determining the mass for the cantilever and also the position of nanobeads attached on the vibrating micro-/nanomechanical beam under intentionally applied axial tensile force from the measured fundamental flexural resonant frequencies is proposed.
Permanent Link: http://hdl.handle.net/11104/0281266