Observation of coupled mechanical resonance modes within suspended 3D nanowire arrays
| Autor: | Yusuf Leblebici, M. Çağatay Karakan, M. Selim Hanay, Yasin Kilinc, B. Erdem Alaca |
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| Přispěvatelé: | Karakan, M. Çağatay, Hanay, Mehmet Selim |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Single-mode optical fiber Nanowire 02 engineering and technology sensitivity 021001 nanoscience & nanotechnology 01 natural sciences Resonator Band-pass filter Coupling (computer programming) sensor 0103 physical sciences Miniaturization systems Optoelectronics General Materials Science Mechanical resonance 010306 general physics 0210 nano-technology business Lithography |
| Zdroj: | Nanoscale |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/d0nr06659a |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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