title: Resonant frequency and damping of a coupled resonant system measured by apparent dissipation factor frequency spectra.
abstract: This paper proposes a novel scheme to study the resonance of a vibration mode of a complex system by investigating the apparent dissipation factor frequency spectrum (ADFFS) of another coupled vibration mode. We demonstrate that the resonant absorption peak in ADFFS of one vibration mode is proportional to the displacement amplitude square of another coupled vibration mode from both energy dissipation and dynamics. Two coupled micro-cantilevers are experimentally shown that the ADFFS of one micro-cantilever could be applied to obtain the resonant frequency and the damping of the other coupled micro-cantilever.
authors.affiliation: State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guang Zhou, Guangdong 510275, China.
authors.forename: Wenlong
authors.initials: W
authors.lastname: Zuo
authors.forename: Longfei
authors.initials: L
authors.lastname: Li
authors.forename: Yuebin
authors.initials: Y
authors.lastname: Yang
authors.forename: Lan
authors.initials: L
authors.lastname: Chen
authors.forename: Jinxiu
authors.initials: J
authors.lastname: Zhang
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Xiong