Observation of coupled mechanical resonance modes within suspended 3D nanowire arrays

Kilinc, Yasin and Karakan, M. Cągatay and Leblebici, Yusuf and Hanay, M. Selim and Alaca, B. Erdem (2020) Observation of coupled mechanical resonance modes within suspended 3D nanowire arrays. Nanoscale, 12 (43). pp. 22042-22048. ISSN 2040-3364 (Print) 2040-3372 (Online)

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Complex yet compact nanoscale mechanisms have largely been absent due to the rather limited availability of components and integration techniques. Especially missing have been efficient interconnects with adjustable characteristics. To address this issue, we report here, for the first time, the transduction of collective modes in vertically stacked arrays of silicon nanowires suspended between couplers. In addition to the ambitious miniaturization, this composite resonator enables the control of coupling strength through the lithographic definition of coupler stiffness. A direct link is thus established between coupling strength and spectral response for two array architectures with nominally identical resonators but different couplers. A series of unique observations emerged in this platform, such as the splitting of a single mode into two closely spaced modes which raises the possibility of tunable bandpass filters with enhanced spectrum characteristics. Finally, intermodal coupling strengths were measured providing strong evidence about the collective nature of these modes.
Item Type: Article
Divisions: Faculty of Engineering and Natural Sciences
President's Office
Depositing User: Yusuf Leblebici
Date Deposited: 04 Aug 2023 17:05
Last Modified: 04 Aug 2023 17:05
URI: https://research.sabanciuniv.edu/id/eprint/46935

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